v0.55.3

Added German translation

.idea/kotlinc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.8.10" />
+    <option name="version" value="1.8.21" />
   </component>
 </project>

README.md

@@ -60,12 +60,12 @@ Or get the latest APK from the [Releases Section](https://github.com/vitorpamplo
 - [x] Audio Tracks (zapstr.live) (NIP-TBD)
 - [x] Push Notifications (Zaps and Messages)
 - [x] Generic Tags (NIP-12)
+- [x] Sensitive Content (NIP-36)
 - [ ] Marketplace (NIP-15)
 - [ ] Image/Video Capture in the app
 - [ ] Local Database 
 - [ ] View Individual Reactions (Like, Boost, Zaps, Reports) per Post
 - [ ] Bookmarks, Pinned Posts, Muted Events (NIP-51)
-- [ ] Sensitive Content (NIP-36) 
 - [ ] Relay Pages (NIP-11)
 - [ ] Proof of Work in the Phone (NIP-13, NIP-20)
 - [ ] Events with a Subject (NIP-14)

app/build.gradle

@@ -13,17 +13,19 @@ android {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
         targetSdk 33
-        versionCode 177
-        versionName "0.51.2"
+        versionCode 198
+        versionName "0.55.3"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
             useSupportLibrary true
         }
+        resConfigs("ar", "cs", "eo", "es", "fa", "fr", "hu", "night", "nl", "pt-rBR", "ru", "sv-rSE", "ta", "tr", "uk", "zh", "sh-rHK", "zh-rTW" )
     }
 
     buildTypes {
         release {
+            // TODO: Make sure all of JSON parsers work when activating these.
             //minifyEnabled true
             //proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
             resValue "string", "app_name", "@string/app_name_release"
@@ -71,7 +73,7 @@ android {
     }
 
     composeOptions {
-        kotlinCompilerExtensionVersion "1.4.3"
+        kotlinCompilerExtensionVersion "1.4.7"
     }
 
     packagingOptions {
@@ -86,7 +88,7 @@ android {
 
 dependencies {
     implementation 'androidx.core:core-ktx:1.10.1'
-    implementation 'androidx.activity:activity-compose:1.7.1'
+    implementation 'androidx.activity:activity-compose:1.7.2'
     implementation "androidx.compose.ui:ui:$compose_ui_version"
     implementation "androidx.compose.ui:ui-tooling-preview:$compose_ui_version"
 
@@ -127,11 +129,11 @@ dependencies {
     implementation 'com.squareup.okhttp3:okhttp:5.0.0-alpha.11'
 
     // Json Serialization TODO: We might need to converge between gson and Jackson (we are usin both)
-    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.15.1'
+    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.15.2'
     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
 
     // link preview
-    implementation 'org.jsoup:jsoup:1.13.1'
+    implementation 'org.jsoup:jsoup:1.16.1'
     //implementation 'tw.com.oneup.www:Baha-UrlPreview:1.0.1'
 
     // Encrypted Key Storage
@@ -139,6 +141,8 @@ dependencies {
 
     // view videos
     implementation 'com.google.android.exoplayer:exoplayer:2.18.7'
+    // important for proxy / tor
+    implementation 'com.google.android.exoplayer:extension-okhttp:2.18.7'
 
     // Load images from the web.
     implementation "io.coil-kt:coil-compose:$coil_version"
@@ -150,8 +154,6 @@ dependencies {
     // create blurhash
     implementation group: 'io.trbl', name: 'blurhash', version: '1.0.0'
 
-    // Rendering clickable text
-    implementation "com.google.accompanist:accompanist-flowlayout:$accompanist_version"
     // Permission to upload pictures:
     implementation "com.google.accompanist:accompanist-permissions:$accompanist_version"
 
@@ -174,7 +176,7 @@ dependencies {
     playImplementation 'com.google.mlkit:translate:17.0.1'
 
     // PushNotifications
-    playImplementation platform('com.google.firebase:firebase-bom:32.0.0')
+    playImplementation platform('com.google.firebase:firebase-bom:32.1.0')
     playImplementation 'com.google.firebase:firebase-messaging-ktx'
 
     // Charts

app/src/fdroid/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.ui.components
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 @Composable
@@ -10,7 +11,7 @@ fun TranslatableRichTextViewer(
     content: String,
     canPreview: Boolean,
     modifier: Modifier = Modifier,
-    tags: List<List<String>>?,
+    tags: ImmutableListOfLists<String>,
     backgroundColor: Color,
     accountViewModel: AccountViewModel,
     nav: (String) -> Unit

app/src/main/AndroidManifest.xml

@@ -30,6 +30,7 @@
         android:largeHeap="true"
         android:usesCleartextTraffic="true"
         android:hardwareAccelerated="true"
+        android:localeConfig="@xml/locales_config"
         tools:targetApi="33">
         <activity
             android:name=".ui.MainActivity"

app/src/main/java/com/vitorpamplona/amethyst/LocalPreferences.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst
 import android.annotation.SuppressLint
 import android.content.Context
 import android.content.SharedPreferences
+import androidx.compose.runtime.Immutable
 import com.google.gson.GsonBuilder
 import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.Account
@@ -30,6 +31,7 @@ import java.util.Locale
 private const val DEBUG_PLAINTEXT_PREFERENCES = false
 private const val DEBUG_PREFERENCES_NAME = "debug_prefs"
 
+@Immutable
 data class AccountInfo(
     val npub: String,
     val hasPrivKey: Boolean = false
@@ -58,6 +60,7 @@ private object PrefKeys {
     const val HIDE_BLOCK_ALERT_DIALOG = "hide_block_alert_dialog"
     const val USE_PROXY = "use_proxy"
     const val PROXY_PORT = "proxy_port"
+    const val SHOW_SENSITIVE_CONTENT = "show_sensitive_content"
     val LAST_READ: (String) -> String = { route -> "last_read_route_$route" }
 }
 
@@ -214,6 +217,12 @@ object LocalPreferences {
             putBoolean(PrefKeys.HIDE_BLOCK_ALERT_DIALOG, account.hideBlockAlertDialog)
             putBoolean(PrefKeys.USE_PROXY, account.proxy != null)
             putInt(PrefKeys.PROXY_PORT, account.proxyPort)
+
+            if (account.showSensitiveContent == null) {
+                remove(PrefKeys.SHOW_SENSITIVE_CONTENT)
+            } else {
+                putBoolean(PrefKeys.SHOW_SENSITIVE_CONTENT, account.showSensitiveContent!!)
+            }
         }.apply()
     }
 
@@ -292,6 +301,12 @@ object LocalPreferences {
             val proxyPort = getInt(PrefKeys.PROXY_PORT, 9050)
             val proxy = HttpClient.initProxy(useProxy, "127.0.0.1", proxyPort)
 
+            val showSensitiveContent = if (contains(PrefKeys.SHOW_SENSITIVE_CONTENT)) {
+                getBoolean(PrefKeys.SHOW_SENSITIVE_CONTENT, false)
+            } else {
+                null
+            }
+
             val a = Account(
                 Persona(privKey = privKey?.hexToByteArray(), pubKey = pubKey.hexToByteArray()),
                 followingChannels,
@@ -311,7 +326,8 @@ object LocalPreferences {
                 hideBlockAlertDialog,
                 latestContactList,
                 proxy,
-                proxyPort
+                proxyPort,
+                showSensitiveContent
             )
 
             return a

app/src/main/java/com/vitorpamplona/amethyst/NotificationCache.kt

@@ -39,14 +39,14 @@ object NotificationCache {
 
 class NotificationLiveData(val cache: NotificationCache) : LiveData<NotificationState>(NotificationState(cache)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        if (hasActiveObservers()) {
-            postValue(NotificationState(cache))
-        }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            if (hasActiveObservers()) {
+                postValue(NotificationState(cache))
+            }
+        }
     }
 }
 

app/src/main/java/com/vitorpamplona/amethyst/ServiceManager.kt

@@ -1,5 +1,12 @@
 package com.vitorpamplona.amethyst
 
+import android.content.Context
+import android.os.Build
+import coil.Coil
+import coil.ImageLoader
+import coil.decode.GifDecoder
+import coil.decode.ImageDecoderDecoder
+import coil.decode.SvgDecoder
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.service.HttpClient
@@ -19,14 +26,33 @@ import com.vitorpamplona.amethyst.service.relays.Client
 object ServiceManager {
     private var account: Account? = null
 
-    fun start(account: Account) {
+    fun start(account: Account, context: Context) {
         this.account = account
-        start()
+        start(context)
     }
 
-    fun start() {
+    fun start(context: Context) {
         val myAccount = account
+
+        // Resets Proxy Use
         HttpClient.start(account)
+        Coil.setImageLoader {
+            ImageLoader.Builder(context).components {
+                if (Build.VERSION.SDK_INT >= 28) {
+                    add(ImageDecoderDecoder.Factory())
+                } else {
+                    add(GifDecoder.Factory())
+                }
+                add(SvgDecoder.Factory())
+            } // .logger(DebugLogger())
+                .okHttpClient { HttpClient.getHttpClient() }
+                .respectCacheHeaders(false)
+                .build()
+        }
+
+        // Initializes video cache.
+        VideoCache.init(context.applicationContext)
+
         if (myAccount != null) {
             Client.connect(myAccount.activeRelays() ?: myAccount.convertLocalRelays())
 

app/src/main/java/com/vitorpamplona/amethyst/VideoCache.kt

@@ -2,10 +2,11 @@ package com.vitorpamplona.amethyst
 
 import android.content.Context
 import com.google.android.exoplayer2.database.StandaloneDatabaseProvider
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSource
+import com.google.android.exoplayer2.ext.okhttp.OkHttpDataSource
 import com.google.android.exoplayer2.upstream.cache.CacheDataSource
 import com.google.android.exoplayer2.upstream.cache.LeastRecentlyUsedCacheEvictor
 import com.google.android.exoplayer2.upstream.cache.SimpleCache
+import com.vitorpamplona.amethyst.service.HttpClient
 
 object VideoCache {
 
@@ -31,7 +32,14 @@ object VideoCache {
             cacheDataSourceFactory = CacheDataSource.Factory()
                 .setCache(simpleCache)
                 .setUpstreamDataSourceFactory(
-                    DefaultHttpDataSource.Factory().setAllowCrossProtocolRedirects(true)
+                    OkHttpDataSource.Factory(HttpClient.getHttpClient())
+                )
+                .setFlags(CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR)
+        } else {
+            cacheDataSourceFactory = CacheDataSource.Factory()
+                .setCache(simpleCache)
+                .setUpstreamDataSourceFactory(
+                    OkHttpDataSource.Factory(HttpClient.getHttpClient())
                 )
                 .setFlags(CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR)
         }

app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -65,7 +65,8 @@ class Account(
     var hideBlockAlertDialog: Boolean = false,
     var backupContactList: ContactListEvent? = null,
     var proxy: Proxy?,
-    var proxyPort: Int
+    var proxyPort: Int,
+    var showSensitiveContent: Boolean? = null
 ) {
     var transientHiddenUsers: Set<String> = setOf()
 
@@ -88,10 +89,6 @@ class Account(
         return followingChannels.map { LocalCache.getOrCreateChannel(it) }
     }
 
-    fun hiddenUsers(): List<User> {
-        return (hiddenUsers + transientHiddenUsers).map { LocalCache.getOrCreateUser(it) }
-    }
-
     fun isWriteable(): Boolean {
         return loggedIn.privKey != null
     }
@@ -480,7 +477,14 @@ class Account(
         return LocalCache.notes[signedEvent.id]
     }
 
-    fun sendPost(message: String, replyTo: List<Note>?, mentions: List<User>?, tags: List<String>? = null, zapReceiver: String? = null) {
+    fun sendPost(
+        message: String,
+        replyTo: List<Note>?,
+        mentions: List<User>?,
+        tags: List<String>? = null,
+        zapReceiver: String? = null,
+        wantsToMarkAsSensitive: Boolean
+    ) {
         if (!isWriteable()) return
 
         val repliesToHex = replyTo?.filter { it.address() == null }?.map { it.idHex }
@@ -494,6 +498,7 @@ class Account(
             addresses = addresses,
             extraTags = tags,
             zapReceiver = zapReceiver,
+            markAsSensitive = wantsToMarkAsSensitive,
             privateKey = loggedIn.privKey!!
         )
 
@@ -510,7 +515,8 @@ class Account(
         valueMinimum: Int?,
         consensusThreshold: Int?,
         closedAt: Int?,
-        zapReceiver: String? = null
+        zapReceiver: String? = null,
+        wantsToMarkAsSensitive: Boolean
     ) {
         if (!isWriteable()) return
 
@@ -529,14 +535,15 @@ class Account(
             valueMinimum = valueMinimum,
             consensusThreshold = consensusThreshold,
             closedAt = closedAt,
-            zapReceiver = zapReceiver
+            zapReceiver = zapReceiver,
+            markAsSensitive = wantsToMarkAsSensitive
         )
         // println("Sending new PollNoteEvent: %s".format(signedEvent.toJson()))
         Client.send(signedEvent)
         LocalCache.consume(signedEvent)
     }
 
-    fun sendChannelMessage(message: String, toChannel: String, replyTo: List<Note>?, mentions: List<User>?, zapReceiver: String? = null) {
+    fun sendChannelMessage(message: String, toChannel: String, replyTo: List<Note>?, mentions: List<User>?, zapReceiver: String? = null, wantsToMarkAsSensitive: Boolean) {
         if (!isWriteable()) return
 
         // val repliesToHex = listOfNotNull(replyingTo?.idHex).ifEmpty { null }
@@ -549,26 +556,27 @@ class Account(
             replyTos = repliesToHex,
             mentions = mentionsHex,
             zapReceiver = zapReceiver,
+            markAsSensitive = wantsToMarkAsSensitive,
             privateKey = loggedIn.privKey!!
         )
         Client.send(signedEvent)
         LocalCache.consume(signedEvent, null)
     }
 
-    fun sendPrivateMessage(message: String, toUser: String, replyingTo: Note? = null, mentions: List<User>?, zapReceiver: String? = null) {
+    fun sendPrivateMessage(message: String, toUser: User, replyingTo: Note? = null, mentions: List<User>?, zapReceiver: String? = null, wantsToMarkAsSensitive: Boolean) {
         if (!isWriteable()) return
-        val user = LocalCache.users[toUser] ?: return
 
         val repliesToHex = listOfNotNull(replyingTo?.idHex).ifEmpty { null }
         val mentionsHex = mentions?.map { it.pubkeyHex }
 
         val signedEvent = PrivateDmEvent.create(
-            recipientPubKey = user.pubkey(),
-            publishedRecipientPubKey = user.pubkey(),
+            recipientPubKey = toUser.pubkey(),
+            publishedRecipientPubKey = toUser.pubkey(),
             msg = message,
             replyTos = repliesToHex,
             mentions = mentionsHex,
             zapReceiver = zapReceiver,
+            markAsSensitive = wantsToMarkAsSensitive,
             privateKey = loggedIn.privKey!!,
             advertiseNip18 = false
         )
@@ -896,15 +904,7 @@ class Account(
     fun decryptContent(note: Note): String? {
         val event = note.event
         return if (event is PrivateDmEvent && loggedIn.privKey != null) {
-            var pubkeyToUse = event.pubKey
-
-            val recepientPK = event.verifiedRecipientPubKey()
-
-            if (note.author == userProfile() && recepientPK != null) {
-                pubkeyToUse = recepientPK
-            }
-
-            event.plainContent(loggedIn.privKey!!, pubkeyToUse.hexToByteArray())
+            event.plainContent(loggedIn.privKey!!, event.talkingWith(userProfile().pubkeyHex).hexToByteArray())
         } else if (event is LnZapRequestEvent && loggedIn.privKey != null) {
             decryptZapContentAuthor(note)?.content()
         } else {
@@ -999,10 +999,10 @@ class Account(
     }
 
     private fun updateContactListTo(newContactList: ContactListEvent?) {
-        if (newContactList?.unverifiedFollowKeySet().isNullOrEmpty()) return
+        if (newContactList == null || newContactList.tags.isEmpty()) return
 
         // Events might be different objects, we have to compare their ids.
-        if (backupContactList?.id != newContactList?.id) {
+        if (backupContactList?.id != newContactList.id) {
             backupContactList = newContactList
             saveable.invalidateData()
         }
@@ -1114,6 +1114,12 @@ class Account(
         saveable.invalidateData()
     }
 
+    fun updateShowSensitiveContent(show: Boolean?) {
+        showSensitiveContent = show
+        saveable.invalidateData()
+        live.invalidateData()
+    }
+
     fun registerObservers() {
         // Observes relays to restart connections
         userProfile().live().relays.observeForever {
@@ -1124,7 +1130,9 @@ class Account(
 
         // saves contact list for the next time.
         userProfile().live().follows.observeForever {
-            updateContactListTo(userProfile().latestContactList)
+            GlobalScope.launch(Dispatchers.IO) {
+                updateContactListTo(userProfile().latestContactList)
+            }
         }
 
         // imports transient blocks due to spam.
@@ -1135,6 +1143,7 @@ class Account(
                         val userToBlock = LocalCache.getOrCreateUser(it.pubkeyHex)
                         if (userToBlock != userProfile() && userToBlock.pubkeyHex !in followingKeySet()) {
                             transientHiddenUsers = transientHiddenUsers + it.pubkeyHex
+                            live.invalidateData()
                         }
                     }
                 }
@@ -1154,14 +1163,14 @@ class Account(
 
 class AccountLiveData(private val account: Account) : LiveData<AccountState>(AccountState(account)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.Default) {
-        if (hasActiveObservers()) {
-            refresh()
-        }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.Default)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            if (hasActiveObservers()) {
+                refresh()
+            }
+        }
     }
 
     fun refresh() {

app/src/main/java/com/vitorpamplona/amethyst/model/AntiSpamFilter.kt

@@ -3,7 +3,9 @@ package com.vitorpamplona.amethyst.model
 import android.util.Log
 import android.util.LruCache
 import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.Event
+import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import kotlinx.coroutines.Dispatchers
@@ -16,6 +18,8 @@ class AntiSpamFilter {
 
     @Synchronized
     fun isSpam(event: Event, relay: Relay?): Boolean {
+        checkNotInMainThread()
+
         val idHex = event.id
 
         // if short message, ok
@@ -28,6 +32,7 @@ class AntiSpamFilter {
         val hash = (event.content + event.tags.flatten().joinToString(",")).hashCode()
 
         if ((recentMessages[hash] != null && recentMessages[hash] != idHex) || spamMessages[hash] != null) {
+            Log.w("Potential SPAM Message for sharing", "${Nip19.createNEvent(event.id, event.pubKey, event.kind, null)}")
             Log.w("Potential SPAM Message", "${event.id} ${recentMessages[hash]} ${spamMessages[hash] != null} ${relay?.url} ${event.content.replace("\n", " | ")}")
 
             // Log down offenders
@@ -55,14 +60,14 @@ class AntiSpamFilter {
 class AntiSpamLiveData(val cache: AntiSpamFilter) : LiveData<AntiSpamState>(AntiSpamState(cache)) {
 
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        if (hasActiveObservers()) {
-            postValue(AntiSpamState(cache))
-        }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            if (hasActiveObservers()) {
+                postValue(AntiSpamState(cache))
+            }
+        }
     }
 }
 

app/src/main/java/com/vitorpamplona/amethyst/model/Channel.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.model
 
+import androidx.compose.runtime.Stable
 import androidx.lifecycle.LiveData
 import com.vitorpamplona.amethyst.service.NostrSingleChannelDataSource
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
@@ -9,6 +10,7 @@ import fr.acinq.secp256k1.Hex
 import kotlinx.coroutines.Dispatchers
 import java.util.concurrent.ConcurrentHashMap
 
+@Stable
 class Channel(val idHex: String) {
     var creator: User? = null
     var info = ChannelCreateEvent.ChannelData(null, null, null)
@@ -33,6 +35,10 @@ class Channel(val idHex: String) {
         notes.remove(note.idHex)
     }
 
+    fun removeNote(noteHex: String) {
+        notes.remove(noteHex)
+    }
+
     fun updateChannelInfo(creator: User, channelInfo: ChannelCreateEvent.ChannelData, updatedAt: Long) {
         this.creator = creator
         this.info = channelInfo
@@ -74,14 +80,14 @@ class Channel(val idHex: String) {
 
 class ChannelLiveData(val channel: Channel) : LiveData<ChannelState>(ChannelState(channel)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        if (hasActiveObservers()) {
-            postValue(ChannelState(channel))
-        }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            if (hasActiveObservers()) {
+                postValue(ChannelState(channel))
+            }
+        }
     }
 
     override fun onActive() {

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -1,9 +1,8 @@
 package com.vitorpamplona.amethyst.model
 
 import android.util.Log
-import com.fasterxml.jackson.databind.DeserializationFeature
-import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.Relay
@@ -13,7 +12,6 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
 import nostr.postr.toNpub
-import java.io.ByteArrayInputStream
 import java.io.File
 import java.io.FileOutputStream
 import java.io.IOException
@@ -23,12 +21,6 @@ import java.time.format.DateTimeFormatter
 import java.util.concurrent.ConcurrentHashMap
 
 object LocalCache {
-    val metadataParser by lazy {
-        jacksonObjectMapper()
-            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
-            .readerFor(UserMetadata::class.java)
-    }
-
     val antiSpam = AntiSpamFilter()
 
     val users = ConcurrentHashMap<HexKey, User>(5000)
@@ -40,6 +32,8 @@ object LocalCache {
         ConcurrentHashMap<HexKey, Pair<Note?, (LnZapPaymentResponseEvent) -> Unit>>(10)
 
     fun checkGetOrCreateUser(key: String): User? {
+        checkNotInMainThread()
+
         if (isValidHexNpub(key)) {
             return getOrCreateUser(key)
         }
@@ -48,6 +42,8 @@ object LocalCache {
 
     @Synchronized
     fun getOrCreateUser(key: HexKey): User {
+        // checkNotInMainThread()
+
         return users[key] ?: run {
             val answer = User(key)
             users.put(key, answer)
@@ -56,6 +52,8 @@ object LocalCache {
     }
 
     fun checkGetOrCreateNote(key: String): Note? {
+        checkNotInMainThread()
+
         if (ATag.isATag(key)) {
             return checkGetOrCreateAddressableNote(key)
         }
@@ -67,6 +65,8 @@ object LocalCache {
 
     @Synchronized
     fun getOrCreateNote(idHex: String): Note {
+        checkNotInMainThread()
+
         return notes[idHex] ?: run {
             val answer = Note(idHex)
             notes.put(idHex, answer)
@@ -75,6 +75,8 @@ object LocalCache {
     }
 
     fun checkGetOrCreateChannel(key: String): Channel? {
+        checkNotInMainThread()
+
         if (isValidHexNpub(key)) {
             return getOrCreateChannel(key)
         }
@@ -93,6 +95,8 @@ object LocalCache {
 
     @Synchronized
     fun getOrCreateChannel(key: String): Channel {
+        checkNotInMainThread()
+
         return channels[key] ?: run {
             val answer = Channel(key)
             channels.put(key, answer)
@@ -115,33 +119,35 @@ object LocalCache {
     }
 
     @Synchronized
-    fun getOrCreateAddressableNote(key: ATag): AddressableNote {
+    fun getOrCreateAddressableNoteInternal(key: ATag): AddressableNote {
+        checkNotInMainThread()
+
         // we can't use naddr here because naddr might include relay info and
         // the preferred relay should not be part of the index.
         return addressables[key.toTag()] ?: run {
             val answer = AddressableNote(key)
-            answer.author = checkGetOrCreateUser(key.pubKeyHex)
             addressables.put(key.toTag(), answer)
             answer
         }
     }
 
+    fun getOrCreateAddressableNote(key: ATag): AddressableNote {
+        val note = getOrCreateAddressableNoteInternal(key)
+        // Loads the user outside a Syncronized block to avoid blocking
+        if (note.author == null) {
+            note.author = checkGetOrCreateUser(key.pubKeyHex)
+        }
+        return note
+    }
+
     fun consume(event: MetadataEvent) {
         // new event
         val oldUser = getOrCreateUser(event.pubKey)
         if (oldUser.info == null || event.createdAt > oldUser.info!!.updatedMetadataAt) {
-            val newUser = try {
-                metadataParser.readValue(
-                    ByteArrayInputStream(event.content.toByteArray(Charsets.UTF_8)),
-                    UserMetadata::class.java
-                )
-            } catch (e: Exception) {
-                e.printStackTrace()
-                Log.w("MT", "Content Parse Error ${e.localizedMessage} ${event.content}")
-                return
+            val newUserMetadata = event.contactMetaData()
+            if (newUserMetadata != null) {
+                oldUser.updateUserInfo(newUserMetadata, event)
             }
-
-            oldUser.updateUserInfo(newUser, event)
             // Log.d("MT", "New User Metadata ${oldUser.pubkeyDisplayHex} ${oldUser.toBestDisplayName()}")
         } else {
             // Log.d("MT","Relay sent a previous Metadata Event ${oldUser.toBestDisplayName()} ${formattedDateTime(event.createdAt)} > ${formattedDateTime(oldUser.updatedAt)}")
@@ -285,12 +291,13 @@ object LocalCache {
         val note = getOrCreateAddressableNote(event.address())
         val author = getOrCreateUser(event.pubKey)
 
-        // Already processed this event.
-        if (note.event != null) return
+        if (note.event?.id() == event.id()) return
 
-        note.loadEvent(event, author, emptyList())
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
 
-        refreshObservers(note)
+            refreshObservers(note)
+        }
     }
 
     private fun consume(event: AudioTrackEvent) {
@@ -298,11 +305,13 @@ object LocalCache {
         val author = getOrCreateUser(event.pubKey)
 
         // Already processed this event.
-        if (note.event != null) return
+        if (note.event?.id() == event.id()) return
 
-        note.loadEvent(event, author, emptyList())
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
 
-        refreshObservers(note)
+            refreshObservers(note)
+        }
     }
 
     fun consume(event: BadgeDefinitionEvent) {
@@ -357,6 +366,32 @@ object LocalCache {
         refreshObservers(note)
     }
 
+    fun consume(event: AppDefinitionEvent) {
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        note.loadEvent(event, author, emptyList())
+
+        refreshObservers(note)
+    }
+
+    fun consume(event: AppRecommendationEvent) {
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        // Already processed this event.
+        if (note.event?.id() == event.id()) return
+
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
+
+            refreshObservers(note)
+        }
+    }
+
     @Suppress("UNUSED_PARAMETER")
     fun consume(event: RecommendRelayEvent) {
 //        // Log.d("RR", event.toJson())
@@ -429,8 +464,10 @@ object LocalCache {
                     masterNote.removeReport(deleteNote)
                 }
 
-                val channel = deleteNote.channel()
-                channel?.removeNote(deleteNote)
+                deleteNote.channelHex()?.let {
+                    val channel = checkGetOrCreateChannel(it)
+                    channel?.removeNote(deleteNote)
+                }
 
                 if (deleteNote.event is PrivateDmEvent) {
                     val author = deleteNote.author
@@ -505,15 +542,6 @@ object LocalCache {
             }
         }
 
-        if (event.content == "!" || // nostr_console hide.
-            event.content == "\u26A0\uFE0F" // Warning sign
-        ) {
-            // Counts the replies
-            repliesTo.forEach {
-                it.addReport(note)
-            }
-        }
-
         refreshObservers(note)
     }
 
@@ -541,9 +569,15 @@ object LocalCache {
             mentions.forEach {
                 it.addReport(note)
             }
-        }
-        repliesTo.forEach {
-            it.addReport(note)
+        } else {
+            repliesTo.forEach {
+                it.addReport(note)
+            }
+
+            mentions.forEach {
+                // doesn't add to reports, but triggers recounts
+                it.liveSet?.reports?.invalidateData()
+            }
         }
 
         refreshObservers(note)
@@ -839,6 +873,8 @@ object LocalCache {
     }
 
     fun findUsersStartingWith(username: String): List<User> {
+        checkNotInMainThread()
+
         val key = decodePublicKeyAsHexOrNull(username)
 
         if (key != null && users[key] != null) {
@@ -853,6 +889,8 @@ object LocalCache {
     }
 
     fun findNotesStartingWith(text: String): List<Note> {
+        checkNotInMainThread()
+
         val key = try {
             Nip19.uriToRoute(text)?.hex ?: Hex.decode(text).toHexKey()
         } catch (e: Exception) {
@@ -878,6 +916,8 @@ object LocalCache {
     }
 
     fun findChannelsStartingWith(text: String): List<Channel> {
+        checkNotInMainThread()
+
         val key = try {
             Nip19.uriToRoute(text)?.hex ?: Hex.decode(text).toHexKey()
         } catch (e: Exception) {
@@ -906,6 +946,8 @@ object LocalCache {
     }
 
     fun pruneOldAndHiddenMessages(account: Account) {
+        checkNotInMainThread()
+
         channels.forEach { it ->
             val toBeRemoved = it.value.pruneOldAndHiddenMessages(account)
 
@@ -924,6 +966,8 @@ object LocalCache {
     }
 
     fun pruneHiddenMessages(account: Account) {
+        checkNotInMainThread()
+
         val toBeRemoved = account.hiddenUsers.map {
             (users[it]?.notes ?: emptySet())
         }.flatten()
@@ -951,6 +995,8 @@ object LocalCache {
     }
 
     fun pruneContactLists(userAccount: Account) {
+        checkNotInMainThread()
+
         var removingContactList = 0
         users.values.forEach {
             if (it != userAccount.userProfile() && (it.liveSet == null || it.liveSet?.isInUse() == false) && it.latestContactList != null) {
@@ -970,10 +1016,21 @@ object LocalCache {
     }
 
     fun consume(event: Event, relay: Relay?) {
-        if (!event.hasValidSignature()) return
+        checkNotInMainThread()
+
+        if (!event.hasValidSignature()) {
+            try {
+                event.checkSignature()
+            } catch (e: Exception) {
+                Log.w("Event failed retest ${event.kind}", e.message ?: "")
+            }
+            return
+        }
 
         try {
             when (event) {
+                is AppDefinitionEvent -> consume(event)
+                is AppRecommendationEvent -> consume(event)
                 is AudioTrackEvent -> consume(event)
                 is BadgeAwardEvent -> consume(event)
                 is BadgeDefinitionEvent -> consume(event)

app/src/main/java/com/vitorpamplona/amethyst/model/Note.kt

@@ -4,6 +4,7 @@ import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.Stable
 import androidx.lifecycle.LiveData
 import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.nip19.Nip19
@@ -73,10 +74,6 @@ open class Note(val idHex: String) {
             ?: (event as? ChannelCreateEvent)?.id
     }
 
-    fun channel(): Channel? {
-        return channelHex()?.let { LocalCache.checkGetOrCreateChannel(it) }
-    }
-
     open fun address(): ATag? = null
 
     open fun createdAt() = event?.createdAt()
@@ -183,6 +180,7 @@ open class Note(val idHex: String) {
 
     @Synchronized
     fun addZap(zapRequest: Note, zap: Note?) {
+        checkNotInMainThread()
         if (zapRequest !in zaps.keys) {
             zaps = zaps + Pair(zapRequest, zap)
             liveSet?.zaps?.invalidateData()
@@ -194,6 +192,7 @@ open class Note(val idHex: String) {
 
     @Synchronized
     fun addZapPayment(zapPaymentRequest: Note, zapPayment: Note?) {
+        checkNotInMainThread()
         if (zapPaymentRequest !in zapPayments.keys) {
             zapPayments = zapPayments + Pair(zapPaymentRequest, zapPayment)
             liveSet?.zaps?.invalidateData()
@@ -232,7 +231,7 @@ open class Note(val idHex: String) {
     fun isZappedBy(user: User, account: Account): Boolean {
         // Zaps who the requester was the user
         return zaps.any {
-            it.key.author === user || account.decryptZapContentAuthor(it.key)?.pubKey == user.pubkeyHex
+            it.key.author?.pubkeyHex == user.pubkeyHex || account.decryptZapContentAuthor(it.key)?.pubKey == user.pubkeyHex
         } || zapPayments.any {
             val zapResponseEvent = it.value?.event as? LnZapPaymentResponseEvent
             val response = if (zapResponseEvent != null) {
@@ -245,11 +244,11 @@ open class Note(val idHex: String) {
     }
 
     fun isReactedBy(user: User): Boolean {
-        return reactions.any { it.author === user }
+        return reactions.any { it.author?.pubkeyHex == user.pubkeyHex }
     }
 
     fun isBoostedBy(user: User): Boolean {
-        return boosts.any { it.author === user }
+        return boosts.any { it.author?.pubkeyHex == user.pubkeyHex }
     }
 
     fun reportsBy(user: User): Set<Note> {
@@ -414,14 +413,14 @@ class NoteLiveSet(u: Note) {
 
 class NoteLiveData(val note: Note) : LiveData<NoteState>(NoteState(note)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        // if (hasObservers()) {
-        postValue(NoteState(note))
-        // }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            // if (hasObservers()) {
+            postValue(NoteState(note))
+            // }
+        }
     }
 
     override fun onActive() {

app/src/main/java/com/vitorpamplona/amethyst/model/RelaySetupInfo.kt

@@ -1,7 +1,9 @@
 package com.vitorpamplona.amethyst.model
 
+import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.service.relays.FeedType
 
+@Immutable
 data class RelaySetupInfo(
     val url: String,
     val read: Boolean,

app/src/main/java/com/vitorpamplona/amethyst/model/ThreadAssembler.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.model
 
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.ATag
 import kotlin.time.ExperimentalTime
 import kotlin.time.measureTimedValue
@@ -35,6 +36,8 @@ class ThreadAssembler {
 
     @OptIn(ExperimentalTime::class)
     fun findThreadFor(noteId: String): Set<Note> {
+        checkNotInMainThread()
+
         val (result, elapsed) = measureTimedValue {
             val note = if (noteId.contains(":")) {
                 val aTag = ATag.parse(noteId, null)

app/src/main/java/com/vitorpamplona/amethyst/model/UrlCachedPreviewer.kt

@@ -1,12 +1,9 @@
 package com.vitorpamplona.amethyst.model
 
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.previews.BahaUrlPreview
 import com.vitorpamplona.amethyst.service.previews.IUrlPreviewCallback
 import com.vitorpamplona.amethyst.service.previews.UrlInfoItem
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.launch
 
 object UrlCachedPreviewer {
     var cache = mapOf<String, UrlInfoItem>()
@@ -15,6 +12,8 @@ object UrlCachedPreviewer {
         private set
 
     fun previewInfo(url: String, callback: IUrlPreviewCallback? = null) {
+        checkNotInMainThread()
+
         cache[url]?.let {
             callback?.onComplete(it)
             return
@@ -25,22 +24,19 @@ object UrlCachedPreviewer {
             return
         }
 
-        val scope = CoroutineScope(Job() + Dispatchers.IO)
-        scope.launch {
-            BahaUrlPreview(
-                url,
-                object : IUrlPreviewCallback {
-                    override fun onComplete(urlInfo: UrlInfoItem) {
-                        cache = cache + Pair(url, urlInfo)
-                        callback?.onComplete(urlInfo)
-                    }
-
-                    override fun onFailed(throwable: Throwable) {
-                        failures = failures + Pair(url, throwable)
-                        callback?.onFailed(throwable)
-                    }
+        BahaUrlPreview(
+            url,
+            object : IUrlPreviewCallback {
+                override fun onComplete(urlInfo: UrlInfoItem) {
+                    cache = cache + Pair(url, urlInfo)
+                    callback?.onComplete(urlInfo)
                 }
-            ).fetchUrlPreview()
-        }
+
+                override fun onFailed(throwable: Throwable) {
+                    failures = failures + Pair(url, throwable)
+                    callback?.onFailed(throwable)
+                }
+            }
+        ).fetchUrlPreview()
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/model/User.kt

@@ -4,6 +4,7 @@ import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.Stable
 import androidx.lifecycle.LiveData
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.BookmarkListEvent
 import com.vitorpamplona.amethyst.service.model.ContactListEvent
 import com.vitorpamplona.amethyst.service.model.LnZapEvent
@@ -185,6 +186,8 @@ class User(val pubkeyHex: String) {
 
     @Synchronized
     private fun getOrCreatePrivateChatroom(user: User): Chatroom {
+        checkNotInMainThread()
+
         return privateChatrooms[user] ?: run {
             val privateChatroom = Chatroom(setOf<Note>())
             privateChatrooms = privateChatrooms + Pair(user, privateChatroom)
@@ -194,6 +197,8 @@ class User(val pubkeyHex: String) {
 
     @Synchronized
     fun addMessage(user: User, msg: Note) {
+        checkNotInMainThread()
+
         val privateChatroom = getOrCreatePrivateChatroom(user)
         if (msg !in privateChatroom.roomMessages) {
             privateChatroom.roomMessages = privateChatroom.roomMessages + msg
@@ -203,6 +208,8 @@ class User(val pubkeyHex: String) {
 
     @Synchronized
     fun removeMessage(user: User, msg: Note) {
+        checkNotInMainThread()
+
         val privateChatroom = getOrCreatePrivateChatroom(user)
         if (msg in privateChatroom.roomMessages) {
             privateChatroom.roomMessages = privateChatroom.roomMessages - msg
@@ -249,15 +256,11 @@ class User(val pubkeyHex: String) {
     }
 
     fun isFollowing(user: User): Boolean {
-        return latestContactList?.unverifiedFollowKeySet()?.toSet()?.let {
-            return user.pubkeyHex in it
-        } ?: false
+        return latestContactList?.isTaggedUser(user.pubkeyHex) ?: false
     }
 
     fun isFollowingHashtag(tag: String): Boolean {
-        return latestContactList?.unverifiedFollowTagSet()?.toSet()?.let {
-            return tag in it
-        } ?: false
+        return latestContactList?.isTaggedHash(tag) ?: false
     }
 
     fun isFollowingHashtagCached(tag: String): Boolean {
@@ -272,11 +275,17 @@ class User(val pubkeyHex: String) {
         } ?: false
     }
 
+    fun isFollowingCached(userHex: String): Boolean {
+        return latestContactList?.verifiedFollowKeySet?.let {
+            return userHex in it
+        } ?: false
+    }
+
     fun transientFollowCount(): Int? {
         return latestContactList?.unverifiedFollowKeySet()?.size
     }
 
-    fun transientFollowerCount(): Int {
+    suspend fun transientFollowerCount(): Int {
         return LocalCache.users.values.count { it.latestContactList?.isTaggedUser(pubkeyHex) ?: false }
     }
 
@@ -292,14 +301,14 @@ class User(val pubkeyHex: String) {
         return latestContactList?.verifiedFollowKeySet?.size
     }
 
-    fun cachedFollowerCount(): Int {
+    suspend fun cachedFollowerCount(): Int {
         return LocalCache.users.values.count { it.latestContactList?.isTaggedUser(pubkeyHex) ?: false }
     }
 
     fun hasSentMessagesTo(user: User?): Boolean {
         val messagesToUser = privateChatrooms[user] ?: return false
 
-        return messagesToUser.roomMessages.any { this === it.author }
+        return messagesToUser.roomMessages.any { this.pubkeyHex == it.author?.pubkeyHex }
     }
 
     fun hasReport(loggedIn: User, type: ReportEvent.ReportType): Boolean {
@@ -353,6 +362,7 @@ class UserLiveSet(u: User) {
     }
 }
 
+@Immutable
 data class RelayInfo(
     val url: String,
     var lastEvent: Long,
@@ -388,9 +398,13 @@ class UserMetadata {
     var updatedMetadataAt: Long = 0
     var latestMetadata: MetadataEvent? = null
 
+    fun anyName(): String? {
+        return display_name ?: displayName ?: name ?: username
+    }
+
     fun anyNameStartsWith(prefix: String): Boolean {
         return listOfNotNull(name, username, display_name, displayName, nip05, lud06, lud16)
-            .any { it.startsWith(prefix, true) }
+            .any { it.contains(prefix, true) }
     }
 
     fun lnAddress(): String? {
@@ -400,14 +414,14 @@ class UserMetadata {
 
 class UserLiveData(val user: User) : LiveData<UserState>(UserState(user)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        if (hasActiveObservers()) {
-            postValue(UserState(user))
-        }
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            if (hasActiveObservers()) {
+                postValue(UserState(user))
+            }
+        }
     }
 
     override fun onActive() {

app/src/main/java/com/vitorpamplona/amethyst/service/BlurHashImage.kt

@@ -20,6 +20,8 @@ class BlurHashFetcher(
 ) : Fetcher {
 
     override suspend fun fetch(): FetchResult {
+        checkNotInMainThread()
+
         val encodedHash = data.toString().removePrefix("bluehash:")
         val hash = URLDecoder.decode(encodedHash, "utf-8")
 

app/src/main/java/com/vitorpamplona/amethyst/service/MainThreadChecker.kt

@@ -0,0 +1,12 @@
+package com.vitorpamplona.amethyst.service
+
+import android.os.Looper
+import com.vitorpamplona.amethyst.BuildConfig
+
+fun checkNotInMainThread() {
+    if (BuildConfig.DEBUG && isMainThread()) throw OnMainThreadException("It should not be in the MainThread")
+}
+
+fun isMainThread() = Looper.myLooper() == Looper.getMainLooper()
+
+class OnMainThreadException(str: String) : RuntimeException(str)

app/src/main/java/com/vitorpamplona/amethyst/service/Nip05Verifier.kt

@@ -33,6 +33,8 @@ class Nip05Verifier() {
     }
 
     private suspend fun fetchNip05JsonSuspend(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        // checkNotInMainThread()
+
         val url = assembleUrl(nip05)
 
         if (url == null) {
@@ -70,19 +72,25 @@ class Nip05Verifier() {
     }
 
     fun verifyNip05(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        // check fails on tests
+        // checkNotInMainThread()
+
         val mapper = jacksonObjectMapper()
 
         fetchNip05Json(
             nip05,
             onSuccess = {
+                // NIP05 usernames are case insensitive, but JSON properties are not
+                // converts the json to lowercase and then tries to access the username via a
+                // lowercase version of the username.
                 val nip05url = try {
-                    mapper.readTree(it)
+                    mapper.readTree(it.lowercase())
                 } catch (t: Throwable) {
                     onError("Error Parsing JSON from Lightning Address. Check the user's lightning setup")
                     null
                 }
 
-                val user = nip05.split("@")[0]
+                val user = nip05.split("@")[0].lowercase()
 
                 val hexKey = nip05url?.get("names")?.get(user)?.asText()
 

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChannelDataSource.kt

@@ -2,7 +2,6 @@ package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.Channel
-import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
 import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
@@ -12,9 +11,9 @@ object NostrChannelDataSource : NostrDataSource("ChatroomFeed") {
     var account: Account? = null
     var channel: Channel? = null
 
-    fun loadMessagesBetween(account: Account, channelId: String) {
+    fun loadMessagesBetween(account: Account, channel: Channel) {
         this.account = account
-        channel = LocalCache.getOrCreateChannel(channelId)
+        this.channel = channel
         resetFilters()
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomDataSource.kt

@@ -1,7 +1,6 @@
 package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.relays.FeedType
@@ -12,9 +11,9 @@ object NostrChatroomDataSource : NostrDataSource("ChatroomFeed") {
     lateinit var account: Account
     var withUser: User? = null
 
-    fun loadMessagesBetween(accountIn: Account, userId: String) {
+    fun loadMessagesBetween(accountIn: Account, user: User) {
         account = accountIn
-        withUser = LocalCache.users[userId]
+        withUser = user
         resetFilters()
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/NostrDataSource.kt

@@ -103,16 +103,16 @@ abstract class NostrDataSource(val debugName: String) {
     }
 
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO) {
-        // println("DataSource: ${this.javaClass.simpleName} InvalidateFilters")
-
-        // adds the time to perform the refresh into this delay
-        // holding off new updates in case of heavy refresh routines.
-        resetFiltersSuspend()
-    }
+    private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateFilters() {
-        bundler.invalidate()
+        bundler.invalidate() {
+            // println("DataSource: ${this.javaClass.simpleName} InvalidateFilters")
+
+            // adds the time to perform the refresh into this delay
+            // holding off new updates in case of heavy refresh routines.
+            resetFiltersSuspend()
+        }
     }
 
     fun resetFilters() {
@@ -123,6 +123,8 @@ abstract class NostrDataSource(val debugName: String) {
     }
 
     fun resetFiltersSuspend() {
+        checkNotInMainThread()
+
         // saves the channels that are currently active
         val activeSubscriptions = subscriptions.values.filter { it.typedFilters != null }
         // saves the current content to only update if it changes

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSearchEventOrUserDataSource.kt

@@ -48,14 +48,14 @@ object NostrSearchEventOrUserDataSource : NostrDataSource("SingleEventFeed") {
                 filter = JsonFilter(
                     kinds = listOf(MetadataEvent.kind),
                     search = mySearchString,
-                    limit = 20
+                    limit = 100
                 )
             ),
             TypedFilter(
                 types = setOf(FeedType.SEARCH),
                 filter = JsonFilter(
                     search = mySearchString,
-                    limit = 20
+                    limit = 100
                 )
             )
         )

app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt

@@ -29,7 +29,8 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
                             ReactionEvent.kind, RepostEvent.kind, ReportEvent.kind,
                             LnZapEvent.kind, LnZapRequestEvent.kind,
                             BadgeAwardEvent.kind, BadgeDefinitionEvent.kind, BadgeProfilesEvent.kind,
-                            PollNoteEvent.kind, AudioTrackEvent.kind, PinListEvent.kind
+                            PollNoteEvent.kind, AudioTrackEvent.kind, PinListEvent.kind,
+                            PeopleListEvent.kind, BookmarkListEvent.kind
                         ),
                         tags = mapOf("a" to listOf(aTag.toTag())),
                         since = it.lastReactionsDownloadTime
@@ -113,16 +114,6 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
             TypedFilter(
                 types = COMMON_FEED_TYPES,
                 filter = JsonFilter(
-                    kinds = listOf(
-                        TextNoteEvent.kind, LongTextNoteEvent.kind, PollNoteEvent.kind,
-                        ReactionEvent.kind, RepostEvent.kind,
-                        LnZapEvent.kind, LnZapRequestEvent.kind,
-                        ChannelMessageEvent.kind, ChannelCreateEvent.kind, ChannelMetadataEvent.kind,
-                        BadgeDefinitionEvent.kind, BadgeAwardEvent.kind, BadgeProfilesEvent.kind,
-                        PrivateDmEvent.kind,
-                        FileHeaderEvent.kind, FileStorageEvent.kind, FileStorageHeaderEvent.kind,
-                        HighlightEvent.kind, AudioTrackEvent.kind, PinListEvent.kind
-                    ),
                     ids = interestedEvents.toList()
                 )
             )

app/src/main/java/com/vitorpamplona/amethyst/service/NostrUserProfileDataSource.kt

@@ -81,9 +81,9 @@ object NostrUserProfileDataSource : NostrDataSource("UserProfileFeed") {
         TypedFilter(
             types = COMMON_FEED_TYPES,
             filter = JsonFilter(
-                kinds = listOf(BookmarkListEvent.kind, PeopleListEvent.kind),
+                kinds = listOf(BookmarkListEvent.kind, PeopleListEvent.kind, AppRecommendationEvent.kind),
                 authors = listOf(it.pubkeyHex),
-                limit = 1
+                limit = 100
             )
         )
     }

app/src/main/java/com/vitorpamplona/amethyst/service/lnurl/LightningAddressResolver.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.service.lnurl
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -45,6 +46,8 @@ class LightningAddressResolver() {
     }
 
     private suspend fun fetchLightningAddressJsonSuspend(lnaddress: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        checkNotInMainThread()
+
         val url = assembleUrl(lnaddress)
 
         if (url == null) {

app/src/main/java/com/vitorpamplona/amethyst/service/lnurl/LnInvoiceUtil.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.service.lnurl
 
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import java.math.BigDecimal
 import java.util.Locale
 import java.util.regex.Pattern
@@ -98,7 +99,7 @@ object LnInvoiceUtil {
      * @return invoice amount in bitcoins, zero if the invoice has no amount
      * @throws RuntimeException if invoice format is incorrect
      */
-    fun getAmount(invoice: String): BigDecimal {
+    private fun getAmount(invoice: String): BigDecimal {
         try {
             decodeUnlimitedLength(invoice) // checksum must match
         } catch (e: AddressFormatException) {
@@ -121,6 +122,8 @@ object LnInvoiceUtil {
     }
 
     fun getAmountInSats(invoice: String): BigDecimal {
+        checkNotInMainThread()
+
         return getAmount(invoice).multiply(BigDecimal(100000000))
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/model/AppDefinitionEvent.kt

@@ -0,0 +1,41 @@
+package com.vitorpamplona.amethyst.service.model
+
+import android.util.Log
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.UserMetadata
+import java.io.ByteArrayInputStream
+
+@Immutable
+class AppDefinitionEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig), AddressableEvent {
+    override fun dTag() = tags.firstOrNull { it.size > 1 && it[0] == "d" }?.get(1) ?: ""
+    override fun address() = ATag(kind, pubKey, dTag(), null)
+
+    fun appMetaData() = try {
+        MetadataEvent.metadataParser.readValue(
+            ByteArrayInputStream(content.toByteArray(Charsets.UTF_8)),
+            UserMetadata::class.java
+        )
+    } catch (e: Exception) {
+        e.printStackTrace()
+        Log.w("MT", "Content Parse Error ${e.localizedMessage} $content")
+        null
+    }
+
+    fun supportedKinds() = tags.filter { it.size > 1 && it[0] == "k" }.mapNotNull {
+        runCatching { it[1].toInt() }.getOrNull()
+    }
+
+    fun publishedAt() = tags.firstOrNull { it.size > 1 && it[0] == "published_at" }?.get(1)
+
+    companion object {
+        const val kind = 31990
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/model/AppRecommendationEvent.kt

@@ -0,0 +1,27 @@
+package com.vitorpamplona.amethyst.service.model
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.model.HexKey
+
+@Immutable
+class AppRecommendationEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig), AddressableEvent {
+    fun recommendations() = tags.filter { it.size > 1 && it[0] == "a" }.mapNotNull {
+        ATag.parse(it[1], it.getOrNull(2))
+    }
+
+    fun forKind() = runCatching { dTag().toInt() }.getOrNull()
+
+    override fun dTag() = tags.firstOrNull { it.size > 1 && it[0] == "d" }?.get(1) ?: ""
+    override fun address() = ATag(kind, pubKey, dTag(), null)
+
+    companion object {
+        const val kind = 31989
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/model/ChannelMessageEvent.kt

@@ -16,13 +16,27 @@ class ChannelMessageEvent(
     sig: HexKey
 ) : BaseTextNoteEvent(id, pubKey, createdAt, kind, tags, content, sig) {
 
-    fun channel() = tags.firstOrNull { it[0] == "e" && it.size > 3 && it[3] == "root" }?.getOrNull(1) ?: tags.firstOrNull { it.firstOrNull() == "e" }?.getOrNull(1)
+    fun channel() = tags.firstOrNull {
+        it.size > 3 && it[0] == "e" && it[3] == "root"
+    }?.get(1) ?: tags.firstOrNull {
+        it.size > 1 && it[0] == "e"
+    }?.get(1)
+
     override fun replyTos() = tags.filter { it.firstOrNull() == "e" && it.getOrNull(1) != channel() }.mapNotNull { it.getOrNull(1) }
 
     companion object {
         const val kind = 42
 
-        fun create(message: String, channel: String, replyTos: List<String>? = null, mentions: List<String>? = null, zapReceiver: String?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelMessageEvent {
+        fun create(
+            message: String,
+            channel: String,
+            replyTos: List<String>? = null,
+            mentions: List<String>? = null,
+            zapReceiver: String?,
+            privateKey: ByteArray,
+            createdAt: Long = Date().time / 1000,
+            markAsSensitive: Boolean
+        ): ChannelMessageEvent {
             val content = message
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf(
@@ -37,6 +51,9 @@ class ChannelMessageEvent(
             zapReceiver?.let {
                 tags.add(listOf("zap", it))
             }
+            if (markAsSensitive) {
+                tags.add(listOf("content-warning", ""))
+            }
 
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privateKey)

app/src/main/java/com/vitorpamplona/amethyst/service/model/ChannelMetadataEvent.kt

@@ -16,7 +16,7 @@ class ChannelMetadataEvent(
     content: String,
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun channel() = tags.firstOrNull { it.firstOrNull() == "e" }?.getOrNull(1)
+    fun channel() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
     fun channelInfo() =
         try {
             MetadataEvent.gson.fromJson(content, ChannelCreateEvent.ChannelData::class.java)

app/src/main/java/com/vitorpamplona/amethyst/service/model/ContactListEvent.kt

@@ -23,14 +23,12 @@ class ContactListEvent(
     // This function is only used by the user logged in
     // But it is used all the time.
     val verifiedFollowKeySet: Set<HexKey> by lazy {
-        tags.filter { it[0] == "p" }.mapNotNull {
-            it.getOrNull(1)?.let { unverifiedHex: String ->
-                try {
-                    decodePublicKey(unverifiedHex).toHexKey()
-                } catch (e: Exception) {
-                    Log.w("ContactListEvent", "Can't parse tags as a follows: ${it[1]}", e)
-                    null
-                }
+        tags.filter { it.size > 1 && it[0] == "p" }.mapNotNull {
+            try {
+                decodePublicKey(it[1]).toHexKey()
+            } catch (e: Exception) {
+                Log.w("ContactListEvent", "Can't parse tags as a follows: ${it[1]}", e)
+                null
             }
         }.toSet()
     }

app/src/main/java/com/vitorpamplona/amethyst/service/model/Event.kt

@@ -48,6 +48,12 @@ open class Event(
 
     fun taggedUrls() = tags.filter { it.size > 1 && it[0] == "r" }.map { it[1] }
 
+    override fun isSensitive() = tags.any {
+        (it.size > 0 && it[0].equals("content-warning", true)) ||
+            (it.size > 1 && it[0] == "t" && it[1].equals("nsfw", true)) ||
+            (it.size > 1 && it[0] == "t" && it[1].equals("nude", true))
+    }
+
     override fun zapAddress() = tags.firstOrNull { it.size > 1 && it[0] == "zap" }?.get(1)
 
     fun taggedAddresses() = tags.filter { it.size > 1 && it[0] == "a" }.mapNotNull {
@@ -132,7 +138,7 @@ open class Event(
             .replace("\\u2028", "\u2028")
             .replace("\\u2029", "\u2029")
 
-        return sha256.digest(rawEventJson.toByteArray()).toHexKey()
+        return MessageDigest.getInstance("SHA-256").digest(rawEventJson.toByteArray()).toHexKey()
     }
 
     private class EventDeserializer : JsonDeserializer<Event> {
@@ -206,7 +212,6 @@ open class Event(
     companion object {
         private val secp256k1 = Secp256k1.get()
 
-        val sha256: MessageDigest = MessageDigest.getInstance("SHA-256")
         val gson: Gson = GsonBuilder()
             .disableHtmlEscaping()
             .registerTypeAdapter(Event::class.java, EventSerializer())
@@ -222,6 +227,8 @@ open class Event(
         fun fromJson(json: JsonElement, lenient: Boolean = false): Event = gson.fromJson(json, Event::class.java).getRefinedEvent(lenient)
 
         fun Event.getRefinedEvent(lenient: Boolean = false): Event = when (kind) {
+            AppDefinitionEvent.kind -> AppDefinitionEvent(id, pubKey, createdAt, tags, content, sig)
+            AppRecommendationEvent.kind -> AppRecommendationEvent(id, pubKey, createdAt, tags, content, sig)
             AudioTrackEvent.kind -> AudioTrackEvent(id, pubKey, createdAt, tags, content, sig)
             BadgeAwardEvent.kind -> BadgeAwardEvent(id, pubKey, createdAt, tags, content, sig)
             BadgeDefinitionEvent.kind -> BadgeDefinitionEvent(id, pubKey, createdAt, tags, content, sig)
@@ -275,7 +282,7 @@ open class Event(
                 .replace("\\u2028", "\u2028")
                 .replace("\\u2029", "\u2029")
 
-            return sha256.digest(rawEventJson.toByteArray())
+            return MessageDigest.getInstance("SHA-256").digest(rawEventJson.toByteArray())
         }
 
         fun create(privateKey: ByteArray, kind: Int, tags: List<List<String>> = emptyList(), content: String = "", createdAt: Long = Date().time / 1000): Event {

app/src/main/java/com/vitorpamplona/amethyst/service/model/EventInterface.kt

@@ -37,4 +37,5 @@ interface EventInterface {
     fun getPoWRank(): Int
 
     fun zapAddress(): String?
+    fun isSensitive(): Boolean
 }

app/src/main/java/com/vitorpamplona/amethyst/service/model/LnZapRequestEvent.kt

@@ -5,6 +5,7 @@ import com.vitorpamplona.amethyst.model.*
 import nostr.postr.Bech32
 import nostr.postr.Utils
 import java.nio.charset.Charset
+import java.security.MessageDigest
 import java.security.SecureRandom
 import java.util.*
 import javax.crypto.BadPaddingException
@@ -133,7 +134,7 @@ class LnZapRequestEvent(
         fun createEncryptionPrivateKey(privkey: String, id: String, createdAt: Long): ByteArray {
             var str = privkey + id + createdAt.toString()
             var strbyte = str.toByteArray(Charset.forName("utf-8"))
-            return sha256.digest(strbyte)
+            return MessageDigest.getInstance("SHA-256").digest(strbyte)
         }
 
         private fun encryptPrivateZapMessage(msg: String, privkey: ByteArray, pubkey: ByteArray): String {

app/src/main/java/com/vitorpamplona/amethyst/service/model/MetadataEvent.kt

@@ -1,22 +1,17 @@
 package com.vitorpamplona.amethyst.service.model
 
 import android.util.Log
-import androidx.compose.runtime.Immutable
+import com.fasterxml.jackson.databind.DeserializationFeature
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.google.gson.Gson
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.UserMetadata
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
+import java.io.ByteArrayInputStream
 import java.util.Date
 
-@Immutable
-data class ContactMetaData(
-    val name: String,
-    val picture: String,
-    val about: String,
-    val nip05: String?
-)
-
 abstract class IdentityClaim(
     var identity: String,
     var proof: String
@@ -145,9 +140,13 @@ class MetadataEvent(
     sig: HexKey
 ) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
     fun contactMetaData() = try {
-        gson.fromJson(content, ContactMetaData::class.java)
+        metadataParser.readValue(
+            ByteArrayInputStream(content.toByteArray(Charsets.UTF_8)),
+            UserMetadata::class.java
+        )
     } catch (e: Exception) {
-        Log.e("MetadataEvent", "Can't parse $content", e)
+        e.printStackTrace()
+        Log.w("MT", "Content Parse Error ${e.localizedMessage} $content")
         null
     }
 
@@ -164,8 +163,10 @@ class MetadataEvent(
         const val kind = 0
         val gson = Gson()
 
-        fun create(contactMetaData: ContactMetaData, identities: List<IdentityClaim>, privateKey: ByteArray, createdAt: Long = Date().time / 1000): MetadataEvent {
-            return create(gson.toJson(contactMetaData), identities, privateKey, createdAt = createdAt)
+        val metadataParser by lazy {
+            jacksonObjectMapper()
+                .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
+                .readerFor(UserMetadata::class.java)
         }
 
         fun create(contactMetaData: String, identities: List<IdentityClaim>, privateKey: ByteArray, createdAt: Long = Date().time / 1000): MetadataEvent {

app/src/main/java/com/vitorpamplona/amethyst/service/model/PollNoteEvent.kt

@@ -51,7 +51,8 @@ class PollNoteEvent(
             valueMinimum: Int?,
             consensusThreshold: Int?,
             closedAt: Int?,
-            zapReceiver: String?
+            zapReceiver: String?,
+            markAsSensitive: Boolean
         ): PollNoteEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()
@@ -75,6 +76,9 @@ class PollNoteEvent(
             if (zapReceiver != null) {
                 tags.add(listOf("zap", zapReceiver))
             }
+            if (markAsSensitive) {
+                tags.add(listOf("content-warning", ""))
+            }
 
             val id = generateId(pubKey, createdAt, kind, tags, msg)
             val sig = Utils.sign(id, privateKey)

app/src/main/java/com/vitorpamplona/amethyst/service/model/PrivateDmEvent.kt

@@ -29,6 +29,10 @@ class PrivateDmEvent(
 
     fun verifiedRecipientPubKey() = recipientPubKey()?.runCatching { Hex.decode(this[1]).toHexKey() }?.getOrNull() // makes sure its a valid one
 
+    fun talkingWith(oneSideHex: String): HexKey {
+        return if (pubKey == oneSideHex) verifiedRecipientPubKey() ?: pubKey else pubKey
+    }
+
     /**
      * To be fully compatible with nip-04, we read e-tags that are in violation to nip-18.
      *
@@ -39,7 +43,7 @@ class PrivateDmEvent(
 
     fun with(pubkeyHex: String): Boolean {
         return pubkeyHex == pubKey ||
-            tags.firstOrNull { it.size > 1 && it[0] == "p" }?.getOrNull(1) == pubkeyHex
+            tags.any { it.size > 1 && it[0] == "p" && it[1] == pubkeyHex }
     }
 
     fun plainContent(privKey: ByteArray, pubKey: ByteArray): String? {
@@ -73,7 +77,8 @@ class PrivateDmEvent(
             privateKey: ByteArray,
             createdAt: Long = Date().time / 1000,
             publishedRecipientPubKey: ByteArray? = null,
-            advertiseNip18: Boolean = true
+            advertiseNip18: Boolean = true,
+            markAsSensitive: Boolean
         ): PrivateDmEvent {
             val content = Utils.encrypt(
                 if (advertiseNip18) { nip18Advertisement } else { "" } + msg,
@@ -94,6 +99,9 @@ class PrivateDmEvent(
             zapReceiver?.let {
                 tags.add(listOf("zap", it))
             }
+            if (markAsSensitive) {
+                tags.add(listOf("content-warning", ""))
+            }
             val id = generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privateKey)
             return PrivateDmEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())

app/src/main/java/com/vitorpamplona/amethyst/service/model/TextNoteEvent.kt

@@ -29,6 +29,7 @@ class TextNoteEvent(
             addresses: List<ATag>?,
             extraTags: List<String>?,
             zapReceiver: String?,
+            markAsSensitive: Boolean,
             privateKey: ByteArray,
             createdAt: Long = Date().time / 1000
         ): TextNoteEvent {
@@ -56,6 +57,9 @@ class TextNoteEvent(
             findURLs(msg).forEach {
                 tags.add(listOf("r", it))
             }
+            if (markAsSensitive) {
+                tags.add(listOf("content-warning", ""))
+            }
 
             val id = generateId(pubKey, createdAt, kind, tags, msg)
             val sig = Utils.sign(id, privateKey)

app/src/main/java/com/vitorpamplona/amethyst/service/model/zaps/UserZaps.kt

@@ -2,17 +2,21 @@ package com.vitorpamplona.amethyst.service.model.zaps
 
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.LnZapEventInterface
+import com.vitorpamplona.amethyst.ui.screen.ZapReqResponse
 
 object UserZaps {
-    fun forProfileFeed(zaps: Map<Note, Note?>?): List<Pair<Note, Note>> {
+    fun forProfileFeed(zaps: Map<Note, Note?>?): List<ZapReqResponse> {
         if (zaps == null) return emptyList()
 
         return (
             zaps
-                .filter { it.value != null }
-                .toList()
-                .sortedBy { (it.second?.event as? LnZapEventInterface)?.amount() }
+                .mapNotNull { entry ->
+                    entry.value?.let {
+                        ZapReqResponse(entry.key, it)
+                    }
+                }
+                .sortedBy { (it.zapEvent.event as? LnZapEventInterface)?.amount() }
                 .reversed()
-            ) as List<Pair<Note, Note>>
+            )
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/service/nip19/Nip19.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.service.nip19
 
 import android.util.Log
+import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Bech32
@@ -15,6 +16,7 @@ object Nip19 {
 
     val nip19regex = Pattern.compile("(nostr:)?@?(nsec1|npub1|nevent1|naddr1|note1|nprofile1|nrelay1)([qpzry9x8gf2tvdw0s3jn54khce6mua7l]+)([\\S]*)", Pattern.CASE_INSENSITIVE)
 
+    @Immutable
     data class Return(
         val type: Type,
         val hex: String,

app/src/main/java/com/vitorpamplona/amethyst/service/notifications/EventNotificationConsumer.kt

@@ -13,15 +13,22 @@ import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.notifications.NotificationUtils.sendDMNotification
 import com.vitorpamplona.amethyst.service.notifications.NotificationUtils.sendZapNotification
 import com.vitorpamplona.amethyst.ui.note.showAmount
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
 
 class EventNotificationConsumer(private val applicationContext: Context) {
     fun consume(event: Event) {
-        // adds to database
-        LocalCache.consume(event, null)
+        val scope = CoroutineScope(Job() + Dispatchers.IO)
+        scope.launch {
+            // adds to database
+            LocalCache.consume(event, null)
 
-        when (event) {
-            is PrivateDmEvent -> notify(event)
-            is LnZapEvent -> notify(event)
+            when (event) {
+                is PrivateDmEvent -> notify(event)
+                is LnZapEvent -> notify(event)
+            }
         }
     }
 
@@ -54,6 +61,7 @@ class EventNotificationConsumer(private val applicationContext: Context) {
 
     private fun notify(event: LnZapEvent) {
         val noteZapEvent = LocalCache.notes[event.id] ?: return
+
         val noteZapRequest = event.zapRequest?.id?.let { LocalCache.checkGetOrCreateNote(it) }
         val noteZapped = event.zappedPost().firstOrNull()?.let { LocalCache.checkGetOrCreateNote(it) }
 

app/src/main/java/com/vitorpamplona/amethyst/service/notifications/NotificationUtils.kt

@@ -7,6 +7,7 @@ import android.content.Context
 import android.content.Intent
 import android.graphics.drawable.BitmapDrawable
 import android.net.Uri
+import android.service.notification.StatusBarNotification
 import androidx.core.app.NotificationCompat
 import coil.ImageLoader
 import coil.executeBlocking
@@ -133,13 +134,23 @@ object NotificationUtils {
         channelId: String,
         applicationContext: Context
     ) {
+        val notId = id.hashCode()
+
+        // dont notify twice
+        val notifications: Array<StatusBarNotification> = getActiveNotifications()
+        for (notification in notifications) {
+            if (notification.id == notId) {
+                return
+            }
+        }
+
         val contentIntent = Intent(applicationContext, MainActivity::class.java).apply {
             data = Uri.parse(uri)
         }
 
         val contentPendingIntent = PendingIntent.getActivity(
             applicationContext,
-            id.hashCode(),
+            notId,
             contentIntent,
             PendingIntent.FLAG_MUTABLE
         )
@@ -173,7 +184,7 @@ object NotificationUtils {
             .setPriority(NotificationCompat.PRIORITY_HIGH)
             .setAutoCancel(true)
 
-        notify(id.hashCode(), builder.build())
+        notify(notId, builder.build())
     }
 
     /**

app/src/main/java/com/vitorpamplona/amethyst/service/previews/BahaUrlPreview.kt

@@ -1,11 +1,12 @@
 package com.vitorpamplona.amethyst.service.previews
 
 import android.net.Uri
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import kotlinx.coroutines.*
 import java.util.*
 
 class BahaUrlPreview(val url: String, var callback: IUrlPreviewCallback?) {
-    val scope = CoroutineScope(Job() + Dispatchers.Main)
+    val scope = CoroutineScope(Job() + Dispatchers.IO)
     private val imageExtensionArray = arrayOf(".gif", ".png", ".jpg", ".jpeg", ".bmp", ".webp")
 
     fun fetchUrlPreview(timeOut: Int = 30000) {
@@ -18,13 +19,13 @@ class BahaUrlPreview(val url: String, var callback: IUrlPreviewCallback?) {
     }
 
     private suspend fun fetch(timeOut: Int = 30000) {
+        checkNotInMainThread()
         lateinit var urlInfoItem: UrlInfoItem
         if (checkIsImageUrl()) {
             urlInfoItem = UrlInfoItem(url = url, image = url)
         } else {
             val document = getDocument(url, timeOut)
-            urlInfoItem = parseHtml(document)
-            urlInfoItem.url = url
+            urlInfoItem = parseHtml(url, document)
         }
         callback?.onComplete(urlInfoItem)
     }

app/src/main/java/com/vitorpamplona/amethyst/service/previews/UrlInfoItem.kt

@@ -1,11 +1,23 @@
 package com.vitorpamplona.amethyst.service.previews
 
+import androidx.compose.runtime.Immutable
+import java.net.URL
+
+@Immutable
 data class UrlInfoItem(
-    var url: String = "",
-    var title: String = "",
-    var description: String = "",
-    var image: String = ""
+    val url: String = "",
+    val title: String = "",
+    val description: String = "",
+    val image: String = ""
 ) {
+    val verifiedUrl = kotlin.runCatching { URL(url) }.getOrNull()
+    val imageUrlFullPath =
+        if (image.startsWith("/")) {
+            URL(verifiedUrl, image).toString()
+        } else {
+            image
+        }
+
     fun allFetchComplete(): Boolean {
         return title.isNotEmpty() && description.isNotEmpty() && image.isNotEmpty()
     }

app/src/main/java/com/vitorpamplona/amethyst/service/previews/UrlPreviewUtils.kt

@@ -67,50 +67,47 @@ suspend fun getDocument(url: String, timeOut: Int = 30000): Document =
             .get()
     }
 
-suspend fun parseHtml(document: Document): UrlInfoItem =
+suspend fun parseHtml(url: String, document: Document): UrlInfoItem =
     withContext(Dispatchers.IO) {
         val metaTags = document.getElementsByTag(ELEMENT_TAG_META)
-        val urlInfo = UrlInfoItem()
+
+        var title: String = ""
+        var description: String = ""
+        var image: String = ""
+
         metaTags.forEach {
             val propertyTag = it.attr(ATTRIBUTE_VALUE_PROPERTY)
             when (propertyTag) {
-                in META_OG_TITLE -> if (urlInfo.title.isEmpty()) urlInfo.title = it.attr(CONTENT)
-                in META_OG_DESCRIPTION -> if (urlInfo.description.isEmpty()) {
-                    urlInfo.description =
-                        it.attr(CONTENT)
+                in META_OG_TITLE -> if (title.isEmpty()) title = it.attr(CONTENT)
+                in META_OG_DESCRIPTION -> if (description.isEmpty()) {
+                    description = it.attr(CONTENT)
                 }
-                in META_OG_IMAGE -> if (urlInfo.image.isEmpty()) urlInfo.image = it.attr(CONTENT)
+                in META_OG_IMAGE -> if (image.isEmpty()) image = it.attr(CONTENT)
             }
 
             when (it.attr(ATTRIBUTE_VALUE_NAME)) {
-                in META_NAME_TITLE -> if (urlInfo.title.isEmpty()) urlInfo.title = it.attr(CONTENT)
-                in META_NAME_DESCRIPTION -> if (urlInfo.description.isEmpty()) {
-                    urlInfo.description =
-                        it.attr(CONTENT)
+                in META_NAME_TITLE -> if (title.isEmpty()) title = it.attr(CONTENT)
+                in META_NAME_DESCRIPTION -> if (description.isEmpty()) {
+                    description = it.attr(CONTENT)
                 }
-                in META_OG_IMAGE -> if (urlInfo.image.isEmpty()) urlInfo.image = it.attr(CONTENT)
+                in META_OG_IMAGE -> if (image.isEmpty()) image = it.attr(CONTENT)
             }
 
             when (it.attr(ATTRIBUTE_VALUE_ITEMPROP)) {
-                in META_ITEMPROP_TITLE -> if (urlInfo.title.isEmpty()) {
-                    urlInfo.title =
-                        it.attr(CONTENT)
+                in META_ITEMPROP_TITLE -> if (title.isEmpty()) {
+                    title = it.attr(CONTENT)
                 }
-                in META_ITEMPROP_DESCRIPTION -> if (urlInfo.description.isEmpty()) {
-                    urlInfo.description =
-                        it.attr(
-                            CONTENT
-                        )
+                in META_ITEMPROP_DESCRIPTION -> if (description.isEmpty()) {
+                    description = it.attr(CONTENT)
                 }
-                in META_ITEMPROP_IMAGE -> if (urlInfo.image.isEmpty()) {
-                    urlInfo.image = it.attr(
-                        CONTENT
-                    )
+                in META_ITEMPROP_IMAGE -> if (image.isEmpty()) {
+                    image = it.attr(CONTENT)
                 }
             }
-            if (urlInfo.allFetchComplete()) {
-                return@withContext urlInfo
+
+            if (title.isNotEmpty() && description.isNotEmpty() && image.isNotEmpty()) {
+                return@withContext UrlInfoItem(url, title, description, image)
             }
         }
-        return@withContext urlInfo
+        return@withContext UrlInfoItem(url, title, description, image)
     }

app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.service.relays
 
 import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.EventInterface
 import kotlinx.coroutines.DelicateCoroutinesApi
@@ -32,6 +33,8 @@ object Client : RelayPool.Listener {
 
     @Synchronized
     fun connect(relays: Array<Relay>) {
+        checkNotInMainThread()
+
         RelayPool.register(this)
         RelayPool.unloadRelays()
         RelayPool.loadRelays(relays.toList())
@@ -54,6 +57,8 @@ object Client : RelayPool.Listener {
         subscriptionId: String = UUID.randomUUID().toString().substring(0..10),
         filters: List<TypedFilter> = listOf()
     ) {
+        checkNotInMainThread()
+
         subscriptions = subscriptions + Pair(subscriptionId, filters)
         RelayPool.sendFilter(subscriptionId)
     }
@@ -62,11 +67,15 @@ object Client : RelayPool.Listener {
         subscriptionId: String = UUID.randomUUID().toString().substring(0..10),
         filters: List<TypedFilter> = listOf()
     ) {
+        checkNotInMainThread()
+
         subscriptions = subscriptions + Pair(subscriptionId, filters)
         RelayPool.sendFilterOnlyIfDisconnected()
     }
 
     fun send(signedEvent: EventInterface, relay: String? = null, feedTypes: Set<FeedType>? = null, onDone: (() -> Unit)? = null) {
+        checkNotInMainThread()
+
         if (relay == null) {
             RelayPool.send(signedEvent)
         } else {
@@ -91,7 +100,7 @@ object Client : RelayPool.Listener {
     }
 
     @OptIn(DelicateCoroutinesApi::class)
-    fun newSporadicRelay(url: String, feedTypes: Set<FeedType>?, onConnected: (Relay) -> Unit, onDone: (() -> Unit)?) {
+    private fun newSporadicRelay(url: String, feedTypes: Set<FeedType>?, onConnected: (Relay) -> Unit, onDone: (() -> Unit)?) {
         val relay = Relay(url, true, true, feedTypes ?: emptySet(), HttpClient.getProxy())
         RelayPool.addRelay(relay)
 

app/src/main/java/com/vitorpamplona/amethyst/service/relays/Relay.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.service.relays
 import android.util.Log
 import com.google.gson.JsonElement
 import com.vitorpamplona.amethyst.BuildConfig
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.EventInterface
 import com.vitorpamplona.amethyst.service.model.RelayAuthEvent
@@ -69,7 +70,10 @@ class Relay(
 
     @Synchronized
     fun requestAndWatch() {
+        checkNotInMainThread()
         requestAndWatch {
+            checkNotInMainThread()
+
             // Sends everything.
             Client.allSubscriptions().forEach {
                 sendFilter(requestId = it)
@@ -79,6 +83,7 @@ class Relay(
 
     @Synchronized
     fun requestAndWatch(onConnected: (Relay) -> Unit) {
+        checkNotInMainThread()
         if (socket != null) return
 
         try {
@@ -89,6 +94,8 @@ class Relay(
             val listener = object : WebSocketListener() {
 
                 override fun onOpen(webSocket: WebSocket, response: Response) {
+                    checkNotInMainThread()
+
                     afterEOSE = false
                     isReady = true
                     ping = response.receivedResponseAtMillis - response.sentRequestAtMillis
@@ -99,6 +106,8 @@ class Relay(
                 }
 
                 override fun onMessage(webSocket: WebSocket, text: String) {
+                    checkNotInMainThread()
+
                     eventDownloadCounterInBytes += text.bytesUsedInMemory()
 
                     try {
@@ -153,6 +162,8 @@ class Relay(
                 }
 
                 override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
+                    checkNotInMainThread()
+
                     listeners.forEach {
                         it.onRelayStateChange(
                             this@Relay,
@@ -163,6 +174,8 @@ class Relay(
                 }
 
                 override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
+                    checkNotInMainThread()
+
                     socket = null
                     isReady = false
                     afterEOSE = false
@@ -171,6 +184,8 @@ class Relay(
                 }
 
                 override fun onFailure(webSocket: WebSocket, t: Throwable, response: Response?) {
+                    checkNotInMainThread()
+
                     errorCounter++
 
                     socket?.close(1000, "Normal close")
@@ -209,6 +224,8 @@ class Relay(
     }
 
     fun sendFilter(requestId: String) {
+        checkNotInMainThread()
+
         if (read) {
             if (isConnected()) {
                 if (isReady) {
@@ -233,6 +250,8 @@ class Relay(
     }
 
     fun sendFilterOnlyIfDisconnected() {
+        checkNotInMainThread()
+
         if (socket == null) {
             // waits 60 seconds to reconnect after disconnected.
             if (Date().time / 1000 > closingTime + 60) {
@@ -243,6 +262,8 @@ class Relay(
     }
 
     fun send(signedEvent: EventInterface) {
+        checkNotInMainThread()
+
         if (signedEvent is RelayAuthEvent) {
             val event = """["AUTH",${signedEvent.toJson()}]"""
             socket?.send(event)

app/src/main/java/com/vitorpamplona/amethyst/service/relays/RelayPool.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.service.relays
 
 import androidx.lifecycle.LiveData
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.EventInterface
 import kotlinx.coroutines.CoroutineScope
@@ -48,6 +49,8 @@ object RelayPool : Relay.Listener {
     }
 
     fun requestAndWatch() {
+        checkNotInMainThread()
+
         relays.forEach { it.requestAndWatch() }
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/relays/TypedFilter.kt

@@ -55,6 +55,9 @@ class TypedFilter(
         filter.limit?.run {
             jsonObject.addProperty("limit", filter.limit)
         }
+        filter.search?.run {
+            jsonObject.addProperty("search", filter.search)
+        }
         return jsonObject
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/MainActivity.kt

@@ -2,7 +2,6 @@ package com.vitorpamplona.amethyst.ui
 
 import android.content.Context
 import android.content.Intent
-import android.os.Build.VERSION.SDK_INT
 import android.os.Bundle
 import androidx.activity.compose.setContent
 import androidx.activity.result.contract.ActivityResultContracts
@@ -12,15 +11,8 @@ import androidx.compose.material.Surface
 import androidx.compose.ui.Modifier
 import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.viewmodel.compose.viewModel
-import coil.Coil
-import coil.ImageLoader
-import coil.decode.GifDecoder
-import coil.decode.ImageDecoderDecoder
-import coil.decode.SvgDecoder
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.ServiceManager
-import com.vitorpamplona.amethyst.VideoCache
-import com.vitorpamplona.amethyst.service.HttpClient
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
 import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
@@ -28,7 +20,7 @@ import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.notifications.PushNotificationUtils
 import com.vitorpamplona.amethyst.service.relays.Client
-import com.vitorpamplona.amethyst.ui.components.muted
+import com.vitorpamplona.amethyst.ui.components.DefaultMutedSetting
 import com.vitorpamplona.amethyst.ui.navigation.Route
 import com.vitorpamplona.amethyst.ui.note.Nip47
 import com.vitorpamplona.amethyst.ui.screen.AccountScreen
@@ -49,23 +41,6 @@ class MainActivity : FragmentActivity() {
 
         val startingPage = uriToRoute(uri)
 
-        // Initializes video cache.
-        VideoCache.init(this.applicationContext)
-
-        Coil.setImageLoader {
-            ImageLoader.Builder(this).components {
-                if (SDK_INT >= 28) {
-                    add(ImageDecoderDecoder.Factory())
-                } else {
-                    add(GifDecoder.Factory())
-                }
-                add(SvgDecoder.Factory())
-            } // .logger(DebugLogger())
-                .okHttpClient { HttpClient.getHttpClient() }
-                .respectCacheHeaders(false)
-                .build()
-        }
-
         LocalPreferences.migrateSingleUserPrefs()
 
         setContent {
@@ -73,7 +48,7 @@ class MainActivity : FragmentActivity() {
                 // A surface container using the 'background' color from the theme
                 Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background) {
                     val accountStateViewModel: AccountStateViewModel = viewModel {
-                        AccountStateViewModel()
+                        AccountStateViewModel(this@MainActivity)
                     }
 
                     AccountScreen(accountStateViewModel, startingPage)
@@ -88,11 +63,11 @@ class MainActivity : FragmentActivity() {
     override fun onResume() {
         super.onResume()
         // starts muted every time
-        muted.value = true
+        DefaultMutedSetting.value = true
 
         // Only starts after login
         GlobalScope.launch(Dispatchers.IO) {
-            ServiceManager.start()
+            ServiceManager.start(this@MainActivity)
         }
 
         PushNotificationUtils().init(LocalPreferences.allSavedAccounts())
@@ -111,7 +86,9 @@ class MainActivity : FragmentActivity() {
     override fun onTrimMemory(level: Int) {
         super.onTrimMemory(level)
         println("Trim Memory $level")
-        ServiceManager.cleanUp()
+        GlobalScope.launch(Dispatchers.Default) {
+            ServiceManager.cleanUp()
+        }
     }
 }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/JoinUserOrChannelView.kt

@@ -14,6 +14,7 @@ import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyListState
 import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material.Divider
@@ -28,6 +29,8 @@ import androidx.compose.material.icons.filled.Clear
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.runtime.remember
@@ -52,13 +55,14 @@ import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.ui.note.ChannelName
 import com.vitorpamplona.amethyst.ui.note.UserPicture
 import com.vitorpamplona.amethyst.ui.note.UsernameDisplay
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.SearchBarViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.Channel
@@ -72,14 +76,28 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 
 @Composable
-fun JoinUserOrChannelView(onClose: () -> Unit, account: Account, nav: (String) -> Unit) {
-    val searchBarViewModel: SearchBarViewModel = viewModel()
-    searchBarViewModel.account = account
+fun JoinUserOrChannelView(onClose: () -> Unit, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+    val searchBarViewModel: SearchBarViewModel = viewModel(
+        key = accountViewModel.account.userProfile().pubkeyHex + "SearchBarViewModel",
+        factory = SearchBarViewModel.Factory(
+            accountViewModel.account
+        )
+    )
 
+    JoinUserOrChannelView(
+        searchBarViewModel = searchBarViewModel,
+        onClose = onClose,
+        accountViewModel = accountViewModel,
+        nav = nav
+    )
+}
+
+@Composable
+fun JoinUserOrChannelView(searchBarViewModel: SearchBarViewModel, onClose: () -> Unit, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
     Dialog(
         onDismissRequest = {
             NostrSearchEventOrUserDataSource.clear()
-            searchBarViewModel.clean()
+            searchBarViewModel.clear()
             onClose()
         },
         properties = DialogProperties(
@@ -88,7 +106,9 @@ fun JoinUserOrChannelView(onClose: () -> Unit, account: Account, nav: (String) -
     ) {
         Surface() {
             Column(
-                modifier = Modifier.padding(10.dp).heightIn(min = 500.dp)
+                modifier = Modifier
+                    .padding(10.dp)
+                    .heightIn(min = 500.dp)
             ) {
                 Row(
                     modifier = Modifier.fillMaxWidth(),
@@ -96,7 +116,7 @@ fun JoinUserOrChannelView(onClose: () -> Unit, account: Account, nav: (String) -
                     verticalAlignment = Alignment.CenterVertically
                 ) {
                     CloseButton(onCancel = {
-                        searchBarViewModel.clean()
+                        searchBarViewModel.clear()
                         NostrSearchEventOrUserDataSource.clear()
                         onClose()
                     })
@@ -115,28 +135,20 @@ fun JoinUserOrChannelView(onClose: () -> Unit, account: Account, nav: (String) -
 
                 Spacer(modifier = Modifier.height(15.dp))
 
-                RenderSeach(searchBarViewModel, account, nav)
+                RenderSearch(searchBarViewModel, accountViewModel, nav)
             }
         }
     }
 }
 
-@OptIn(ExperimentalComposeUiApi::class)
 @Composable
-private fun RenderSeach(
+private fun RenderSearch(
     searchBarViewModel: SearchBarViewModel,
-    account: Account,
+    accountViewModel: AccountViewModel,
     nav: (String) -> Unit
 ) {
-    val scope = rememberCoroutineScope()
     val listState = rememberLazyListState()
 
-    // initialize focus reference to be able to request focus programmatically
-    val focusRequester = remember { FocusRequester() }
-    val keyboardController = LocalSoftwareKeyboardController.current
-
-    val onlineSearch = NostrSearchEventOrUserDataSource
-
     val lifeCycleOwner = LocalLifecycleOwner.current
 
     // Create a channel for processing search queries.
@@ -145,9 +157,10 @@ private fun RenderSeach(
     }
 
     LaunchedEffect(Unit) {
-        scope.launch(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             LocalCache.live.newEventBundles.collect {
-                if (searchBarViewModel.isSearching()) {
+                checkNotInMainThread()
+                if (searchBarViewModel.isSearchingFun()) {
                     searchBarViewModel.invalidateData()
                 }
             }
@@ -155,9 +168,6 @@ private fun RenderSeach(
     }
 
     LaunchedEffect(Unit) {
-        delay(100)
-        focusRequester.requestFocus()
-
         // Wait for text changes to stop for 300 ms before firing off search.
         withContext(Dispatchers.IO) {
             searchTextChanges.receiveAsFlow()
@@ -166,13 +176,13 @@ private fun RenderSeach(
                 .debounce(300)
                 .collectLatest {
                     if (it.length >= 2) {
-                        onlineSearch.search(it.trim())
+                        NostrSearchEventOrUserDataSource.search(it.trim())
                     }
 
                     searchBarViewModel.invalidateData()
 
                     // makes sure to show the top of the search
-                    scope.launch(Dispatchers.Main) {
+                    launch(Dispatchers.Main) {
                         listState.animateScrollToItem(0)
                     }
                 }
@@ -200,8 +210,34 @@ private fun RenderSeach(
     }
 
     // LAST ROW
+    SearchEditTextForJoin(searchBarViewModel, searchTextChanges)
+
+    RenderSearchResults(searchBarViewModel, listState, accountViewModel, nav)
+}
+
+@OptIn(ExperimentalComposeUiApi::class)
+@Composable
+private fun SearchEditTextForJoin(
+    searchBarViewModel: SearchBarViewModel,
+    searchTextChanges: Channel<String>
+) {
+    val scope = rememberCoroutineScope()
+
+    // initialize focus reference to be able to request focus programmatically
+    val focusRequester = remember { FocusRequester() }
+    val keyboardController = LocalSoftwareKeyboardController.current
+
+    LaunchedEffect(Unit) {
+        launch {
+            delay(100)
+            focusRequester.requestFocus()
+        }
+    }
+
     Row(
-        modifier = Modifier.padding(horizontal = 10.dp).fillMaxWidth(),
+        modifier = Modifier
+            .padding(horizontal = 10.dp)
+            .fillMaxWidth(),
         horizontalArrangement = Arrangement.SpaceBetween,
         verticalAlignment = Alignment.CenterVertically
     ) {
@@ -238,11 +274,11 @@ private fun RenderSeach(
                 )
             },
             trailingIcon = {
-                if (searchBarViewModel.isTrailingIconVisible) {
+                if (searchBarViewModel.isSearching) {
                     IconButton(
                         onClick = {
-                            searchBarViewModel.clean()
-                            onlineSearch.clear()
+                            searchBarViewModel.clear()
+                            NostrSearchEventOrUserDataSource.clear()
                         }
                     ) {
                         Icon(
@@ -254,10 +290,24 @@ private fun RenderSeach(
             }
         )
     }
+}
+
+@Composable
+private fun RenderSearchResults(
+    searchBarViewModel: SearchBarViewModel,
+    listState: LazyListState,
+    accountViewModel: AccountViewModel,
+    nav: (String) -> Unit
+) {
+    if (searchBarViewModel.isSearching) {
+        val users by searchBarViewModel.searchResultsUsers.collectAsState()
+        val channels by searchBarViewModel.searchResultsChannels.collectAsState()
 
-    if (searchBarViewModel.searchValue.isNotBlank()) {
         Row(
-            modifier = Modifier.fillMaxWidth().fillMaxHeight().padding(vertical = 10.dp)
+            modifier = Modifier
+                .fillMaxWidth()
+                .fillMaxHeight()
+                .padding(vertical = 10.dp)
         ) {
             LazyColumn(
                 modifier = Modifier.fillMaxHeight(),
@@ -268,50 +318,60 @@ private fun RenderSeach(
                 state = listState
             ) {
                 itemsIndexed(
-                    searchBarViewModel.searchResults.value,
+                    users,
                     key = { _, item -> "u" + item.pubkeyHex }
                 ) { _, item ->
-                    UserComposeForChat(
-                        item,
-                        account = account,
-                        nav = nav
-                    )
+                    UserComposeForChat(item, accountViewModel) {
+                        nav("Room/${item.pubkeyHex}")
+                        searchBarViewModel.clear()
+                    }
                 }
 
                 itemsIndexed(
-                    searchBarViewModel.searchResultsChannels.value,
+                    channels,
                     key = { _, item -> "c" + item.idHex }
                 ) { _, item ->
-                    ChannelName(
-                        channelIdHex = item.idHex,
-                        channelPicture = item.profilePicture(),
-                        channelTitle = {
-                            Text(
-                                "${item.info.name}",
-                                fontWeight = FontWeight.Bold
-                            )
-                        },
-                        channelLastTime = null,
-                        channelLastContent = item.info.about,
-                        false,
-                        onClick = { nav("Channel/${item.idHex}") }
-                    )
+                    RenderChannel(item) {
+                        nav("Channel/${item.idHex}")
+                        searchBarViewModel.clear()
+                    }
                 }
             }
         }
     }
 }
 
+@Composable
+private fun RenderChannel(
+    item: com.vitorpamplona.amethyst.model.Channel,
+    onClick: () -> Unit
+) {
+    ChannelName(
+        channelIdHex = item.idHex,
+        channelPicture = item.profilePicture(),
+        channelTitle = {
+            Text(
+                "${item.info.name}",
+                fontWeight = FontWeight.Bold
+            )
+        },
+        channelLastTime = null,
+        channelLastContent = item.info.about,
+        false,
+        onClick = onClick
+    )
+}
+
 @Composable
 fun UserComposeForChat(
     baseUser: User,
-    account: Account,
-    nav: (String) -> Unit
+    accountViewModel: AccountViewModel,
+    onClick: () -> Unit
 ) {
     Column(
         modifier =
         Modifier.clickable(
-            onClick = { nav("Room/${baseUser.pubkeyHex}") }
+            onClick = onClick
         )
     ) {
         Row(
@@ -323,22 +383,18 @@ fun UserComposeForChat(
                 ),
             verticalAlignment = Alignment.CenterVertically
         ) {
-            UserPicture(baseUser, nav, account.userProfile(), 55.dp)
+            UserPicture(baseUser, 55.dp, accountViewModel)
 
-            Column(modifier = Modifier.padding(start = 10.dp).weight(1f)) {
+            Column(
+                modifier = Modifier
+                    .padding(start = 10.dp)
+                    .weight(1f)
+            ) {
                 Row(verticalAlignment = Alignment.CenterVertically) {
                     UsernameDisplay(baseUser)
                 }
 
-                val baseUserState by baseUser.live().metadata.observeAsState()
-                val user = baseUserState?.user ?: return
-
-                Text(
-                    user.info?.about ?: "",
-                    color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
-                    maxLines = 1,
-                    overflow = TextOverflow.Ellipsis
-                )
+                DisplayUserAboutInfo(baseUser)
             }
         }
 
@@ -348,3 +404,20 @@ fun UserComposeForChat(
         )
     }
 }
+
+@Composable
+private fun DisplayUserAboutInfo(baseUser: User) {
+    val baseUserState by baseUser.live().metadata.observeAsState()
+    val about by remember(baseUserState) {
+        derivedStateOf {
+            baseUserState?.user?.info?.about ?: ""
+        }
+    }
+
+    Text(
+        text = about,
+        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
+        maxLines = 1,
+        overflow = TextOverflow.Ellipsis
+    )
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewChannelView.kt

@@ -14,6 +14,7 @@ import androidx.compose.material.OutlinedTextField
 import androidx.compose.material.Surface
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
@@ -24,13 +25,15 @@ import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.Channel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
 @Composable
-fun NewChannelView(onClose: () -> Unit, account: Account, channel: Channel? = null) {
+fun NewChannelView(onClose: () -> Unit, accountViewModel: AccountViewModel, channel: Channel? = null) {
     val postViewModel: NewChannelViewModel = viewModel()
-    postViewModel.load(account, channel)
+    postViewModel.load(accountViewModel.account, channel)
 
     Dialog(
         onDismissRequest = { onClose() },
@@ -53,10 +56,14 @@ fun NewChannelView(onClose: () -> Unit, account: Account, channel: Channel? = nu
                         onClose()
                     })
 
+                    val scope = rememberCoroutineScope()
+
                     PostButton(
                         onPost = {
-                            postViewModel.create()
-                            onClose()
+                            scope.launch(Dispatchers.IO) {
+                                postViewModel.create()
+                                onClose()
+                            }
                         },
                         postViewModel.channelName.value.text.isNotBlank()
                     )
@@ -100,7 +107,9 @@ fun NewChannelView(onClose: () -> Unit, account: Account, channel: Channel? = nu
 
                 OutlinedTextField(
                     label = { Text(text = stringResource(R.string.description)) },
-                    modifier = Modifier.fillMaxWidth().height(100.dp),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(100.dp),
                     value = postViewModel.channelDescription.value,
                     onValueChange = { postViewModel.channelDescription.value = it },
                     placeholder = {

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMediaModel.kt

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.ui.actions
 import android.content.Context
 import android.net.Uri
 import android.util.Log
+import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
@@ -14,6 +15,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 
+@Stable
 open class NewMediaModel : ViewModel() {
     var account: Account? = null
 

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMediaView.kt

@@ -16,7 +16,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -34,8 +33,10 @@ import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.ui.components.*
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
+import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 @Composable
 fun NewMediaView(uri: Uri, onClose: () -> Unit, postViewModel: NewMediaModel, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
@@ -48,8 +49,13 @@ fun NewMediaView(uri: Uri, onClose: () -> Unit, postViewModel: NewMediaModel, ac
     LaunchedEffect(uri) {
         val mediaType = resolver.getType(uri) ?: ""
         postViewModel.load(account, uri, mediaType)
-        postViewModel.imageUploadingError.collect { error ->
-            Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+
+        launch(Dispatchers.IO) {
+            postViewModel.imageUploadingError.collect { error ->
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+                }
+            }
         }
     }
 
@@ -117,8 +123,6 @@ fun isNIP94Server(selectedServer: ServersAvailable?): Boolean {
 
 @Composable
 fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
-    val scope = rememberCoroutineScope()
-
     val fileServers = listOf(
         // Triple(ServersAvailable.IMGUR_NIP_94, stringResource(id = R.string.upload_server_imgur_nip94), stringResource(id = R.string.upload_server_imgur_nip94_explainer)),
         Triple(ServersAvailable.NOSTRIMG_NIP_94, stringResource(id = R.string.upload_server_nostrimg_nip94), stringResource(id = R.string.upload_server_nostrimg_nip94_explainer)),
@@ -127,8 +131,8 @@ fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
         Triple(ServersAvailable.NIP95, stringResource(id = R.string.upload_server_relays_nip95), stringResource(id = R.string.upload_server_relays_nip95_explainer))
     )
 
-    val fileServerOptions = fileServers.map { it.second }
-    val fileServerExplainers = fileServers.map { it.third }
+    val fileServerOptions = remember { fileServers.map { it.second }.toImmutableList() }
+    val fileServerExplainers = remember { fileServers.map { it.third }.toImmutableList() }
     val resolver = LocalContext.current.contentResolver
 
     Row(
@@ -152,7 +156,7 @@ fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
             var bitmap by remember { mutableStateOf<Bitmap?>(null) }
 
             LaunchedEffect(key1 = postViewModel.galleryUri) {
-                scope.launch(Dispatchers.IO) {
+                launch(Dispatchers.IO) {
                     postViewModel.galleryUri?.let {
                         try {
                             bitmap = resolver.loadThumbnail(it, Size(1200, 1000), null)
@@ -175,7 +179,7 @@ fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
             }
         } else {
             postViewModel.galleryUri?.let {
-                VideoView(it)
+                VideoView(it.toString())
             }
         }
     }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt

@@ -1,13 +1,12 @@
 package com.vitorpamplona.amethyst.ui.actions
 
-import com.vitorpamplona.amethyst.model.Channel
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.model.parseDirtyWordForKey
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 
-class NewMessageTagger(var channel: Channel?, var mentions: List<User>?, var replyTos: List<Note>?, var message: String) {
+class NewMessageTagger(var channelHex: String?, var mentions: List<User>?, var replyTos: List<Note>?, var message: String) {
 
     fun addUserToMentions(user: User) {
         mentions = if (mentions?.contains(user) == true) mentions else mentions?.plus(user) ?: listOf(user)
@@ -20,12 +19,12 @@ class NewMessageTagger(var channel: Channel?, var mentions: List<User>?, var rep
 
     fun tagIndex(user: User): Int {
         // Postr Events assembles replies before mentions in the tag order
-        return (if (channel != null) 1 else 0) + (replyTos?.size ?: 0) + (mentions?.indexOf(user) ?: 0)
+        return (if (channelHex != null) 1 else 0) + (replyTos?.size ?: 0) + (mentions?.indexOf(user) ?: 0)
     }
 
     fun tagIndex(note: Note): Int {
         // Postr Events assembles replies before mentions in the tag order
-        return (if (channel != null) 1 else 0) + (replyTos?.indexOf(note) ?: 0)
+        return (if (channelHex != null) 1 else 0) + (replyTos?.indexOf(note) ?: 0)
     }
 
     fun run() {

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPollView.kt

@@ -1,197 +0,0 @@
-package com.vitorpamplona.amethyst.ui.actions
-
-import android.widget.Toast
-import androidx.compose.foundation.BorderStroke
-import androidx.compose.foundation.Image
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.itemsIndexed
-import androidx.compose.foundation.rememberScrollState
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.verticalScroll
-import androidx.compose.material.*
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.res.painterResource
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.window.Dialog
-import androidx.compose.ui.window.DialogProperties
-import androidx.lifecycle.viewmodel.compose.viewModel
-import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.service.model.TextNoteEvent
-import com.vitorpamplona.amethyst.ui.components.*
-import com.vitorpamplona.amethyst.ui.note.ReplyInformation
-import com.vitorpamplona.amethyst.ui.screen.loggedIn.UserLine
-import kotlinx.coroutines.delay
-
-@Composable
-fun NewPollView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = null, account: Account) {
-    val pollViewModel: NewPostViewModel = viewModel()
-
-    val context = LocalContext.current
-
-    val scrollState = rememberScrollState()
-
-    LaunchedEffect(Unit) {
-        pollViewModel.load(account, baseReplyTo, quote)
-        delay(100)
-
-        pollViewModel.imageUploadingError.collect { error ->
-            Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
-        }
-    }
-
-    Dialog(
-        onDismissRequest = { onClose() },
-        properties = DialogProperties(
-            usePlatformDefaultWidth = false,
-            dismissOnClickOutside = false,
-            decorFitsSystemWindows = false
-        )
-    ) {
-        Surface(
-            modifier = Modifier
-                .fillMaxWidth()
-                .fillMaxHeight()
-        ) {
-            Column(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .fillMaxHeight()
-            ) {
-                Column(
-                    modifier = Modifier
-                        .padding(start = 10.dp, end = 10.dp, top = 10.dp)
-                        .imePadding()
-                        .weight(1f)
-                ) {
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        horizontalArrangement = Arrangement.SpaceBetween,
-                        verticalAlignment = Alignment.CenterVertically
-                    ) {
-                        CloseButton(onCancel = {
-                            pollViewModel.cancel()
-                            onClose()
-                        })
-
-                        PollButton(
-                            onPost = {
-                                pollViewModel.sendPost()
-                                onClose()
-                            },
-                            isActive = pollViewModel.message.text.isNotBlank() &&
-                                pollViewModel.pollOptions.values.all { it.isNotEmpty() } &&
-                                pollViewModel.isValidRecipients.value &&
-                                pollViewModel.isValidvalueMaximum.value &&
-                                pollViewModel.isValidvalueMinimum.value &&
-                                pollViewModel.isValidConsensusThreshold.value &&
-                                pollViewModel.isValidClosedAt.value
-                        )
-                    }
-
-                    Row(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .weight(1f)
-                    ) {
-                        Column(
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .verticalScroll(scrollState)
-                        ) {
-                            if (pollViewModel.replyTos != null && baseReplyTo?.event is TextNoteEvent) {
-                                ReplyInformation(pollViewModel.replyTos, pollViewModel.mentions, account, "✖ ") {
-                                    pollViewModel.removeFromReplyList(it)
-                                }
-                            }
-
-                            Text(stringResource(R.string.poll_heading_required))
-                            // NewPollRecipientsField(pollViewModel, account)
-                            NewPollPrimaryDescription(pollViewModel)
-                            pollViewModel.pollOptions.values.forEachIndexed { index, _ ->
-                                NewPollOption(pollViewModel, index)
-                            }
-                            Button(
-                                onClick = { pollViewModel.pollOptions[pollViewModel.pollOptions.size] = "" },
-                                border = BorderStroke(1.dp, MaterialTheme.colors.onSurface.copy(alpha = 0.32f)),
-                                colors = ButtonDefaults.outlinedButtonColors(
-                                    contentColor = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
-                                )
-                            ) {
-                                Image(
-                                    painterResource(id = android.R.drawable.ic_input_add),
-                                    contentDescription = "Add poll option button",
-                                    modifier = Modifier.size(18.dp)
-                                )
-                            }
-                            Text(stringResource(R.string.poll_heading_optional))
-                            NewPollVoteValueRange(pollViewModel)
-                            NewPollConsensusThreshold(pollViewModel)
-                            NewPollClosing(pollViewModel)
-                        }
-                    }
-
-                    val userSuggestions = pollViewModel.userSuggestions
-                    if (userSuggestions.isNotEmpty()) {
-                        LazyColumn(
-                            contentPadding = PaddingValues(
-                                top = 10.dp
-                            ),
-                            modifier = Modifier.heightIn(0.dp, 300.dp)
-                        ) {
-                            itemsIndexed(
-                                userSuggestions,
-                                key = { _, item -> item.pubkeyHex }
-                            ) { _, item ->
-                                UserLine(item, account) {
-                                    pollViewModel.autocompleteWithUser(item)
-                                }
-                            }
-                        }
-                    }
-
-                    Row(modifier = Modifier.fillMaxWidth()) {
-                        /*UploadFromGallery(
-                            isUploading = pollViewModel.isUploadingImage
-                        ) {
-                            pollViewModel.upload(it, context)
-                        }*/
-                    }
-                }
-            }
-        }
-    }
-}
-
-@Composable
-fun PollButton(modifier: Modifier = Modifier, onPost: () -> Unit = {}, isActive: Boolean) {
-    Button(
-        modifier = modifier,
-        onClick = {
-            if (isActive) {
-                onPost()
-            }
-        },
-        shape = RoundedCornerShape(20.dp),
-        colors = ButtonDefaults
-            .buttonColors(
-                backgroundColor = if (isActive) MaterialTheme.colors.primary else Color.Gray
-            )
-    ) {
-        Text(text = stringResource(R.string.post_poll), color = Color.White)
-    }
-}
-
-/*@Preview
-@Composable
-fun NewPollViewPreview() {
-    NewPollView(onClose = {}, account = Account(loggedIn = Persona()))
-}*/

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostView.kt

@@ -22,11 +22,15 @@ import androidx.compose.material.icons.filled.ArrowForwardIos
 import androidx.compose.material.icons.filled.Bolt
 import androidx.compose.material.icons.filled.Cancel
 import androidx.compose.material.icons.filled.CurrencyBitcoin
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.filled.VisibilityOff
 import androidx.compose.material.icons.outlined.ArrowForwardIos
 import androidx.compose.material.icons.outlined.Bolt
+import androidx.compose.material.icons.rounded.Warning
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.runtime.mutableStateOf
@@ -59,7 +63,6 @@ import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.viewmodel.compose.viewModel
 import coil.compose.AsyncImage
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
@@ -68,13 +71,19 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.UserLine
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 @OptIn(ExperimentalComposeUiApi::class)
 @Composable
-fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = null, account: Account, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = null, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+    val accountState by accountViewModel.accountLiveData.observeAsState()
+    val account = remember(accountState) { accountState?.account } ?: return
+
     val postViewModel: NewPostViewModel = viewModel()
 
     val context = LocalContext.current
@@ -83,7 +92,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
     val focusRequester = remember { FocusRequester() }
     val keyboardController = LocalSoftwareKeyboardController.current
 
-    val scroolState = rememberScrollState()
+    val scrollState = rememberScrollState()
     val scope = rememberCoroutineScope()
 
     LaunchedEffect(Unit) {
@@ -91,8 +100,12 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
         delay(100)
         focusRequester.requestFocus()
 
-        postViewModel.imageUploadingError.collect { error ->
-            Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+        launch(Dispatchers.IO) {
+            postViewModel.imageUploadingError.collect { error ->
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+                }
+            }
         }
     }
 
@@ -138,8 +151,10 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
 
                         PostButton(
                             onPost = {
-                                postViewModel.sendPost()
-                                onClose()
+                                scope.launch(Dispatchers.IO) {
+                                    postViewModel.sendPost()
+                                    onClose()
+                                }
                             },
                             isActive = postViewModel.canPost()
                         )
@@ -153,9 +168,9 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                         Column(
                             modifier = Modifier
                                 .fillMaxWidth()
-                                .verticalScroll(scroolState)
+                                .verticalScroll(scrollState)
                         ) {
-                            Notifying(postViewModel.mentions) {
+                            Notifying(postViewModel.mentions?.toImmutableList()) {
                                 postViewModel.removeFromReplyList(it)
                             }
 
@@ -285,7 +300,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                         } else {
                                             UrlPreview(myUrlPreview, myUrlPreview)
                                         }
-                                    } else if (isBechLink(myUrlPreview)) {
+                                    } else if (startsWithNIP19Scheme(myUrlPreview)) {
                                         BechLink(
                                             myUrlPreview,
                                             true,
@@ -313,7 +328,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                 userSuggestions,
                                 key = { _, item -> item.pubkeyHex }
                             ) { _, item ->
-                                UserLine(item, account) {
+                                UserLine(item, accountViewModel) {
                                     postViewModel.autocompleteWithUser(item)
                                 }
                             }
@@ -335,10 +350,11 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                         }
 
                         if (postViewModel.canUsePoll) {
-                            val hashtag = stringResource(R.string.poll_hashtag)
+                            // These should be hashtag recommendations the user selects in the future.
+                            // val hashtag = stringResource(R.string.poll_hashtag)
+                            // postViewModel.includePollHashtagInMessage(postViewModel.wantsPoll, hashtag)
                             AddPollButton(postViewModel.wantsPoll) {
                                 postViewModel.wantsPoll = !postViewModel.wantsPoll
-                                postViewModel.includePollHashtagInMessage(postViewModel.wantsPoll, hashtag)
                             }
                         }
 
@@ -348,6 +364,10 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                             }
                         }
 
+                        MarkAsSensitive(postViewModel) {
+                            postViewModel.wantsToMarkAsSensitive = !postViewModel.wantsToMarkAsSensitive
+                        }
+
                         ForwardZapTo(postViewModel) {
                             postViewModel.wantsForwardZapTo = !postViewModel.wantsForwardZapTo
                         }
@@ -360,7 +380,7 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
 
 @OptIn(ExperimentalLayoutApi::class)
 @Composable
-fun Notifying(baseMentions: List<User>?, onClick: (User) -> Unit) {
+fun Notifying(baseMentions: ImmutableList<User>?, onClick: (User) -> Unit) {
     val mentions = baseMentions?.toSet()
 
     FlowRow(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(horizontal = 10.dp)) {
@@ -373,11 +393,13 @@ fun Notifying(baseMentions: List<User>?, onClick: (User) -> Unit) {
 
             mentions.forEachIndexed { idx, user ->
                 val innerUserState by user.live().metadata.observeAsState()
-                val innerUser = innerUserState?.user
-
-                innerUser?.let { myUser ->
+                innerUserState?.user?.let { myUser ->
                     Spacer(modifier = Modifier.width(5.dp))
 
+                    val tags = remember(innerUserState) {
+                        myUser.info?.latestMetadata?.tags?.toImmutableListOfLists()
+                    }
+
                     Button(
                         shape = RoundedCornerShape(20.dp),
                         colors = ButtonDefaults.buttonColors(
@@ -388,8 +410,8 @@ fun Notifying(baseMentions: List<User>?, onClick: (User) -> Unit) {
                         }
                     ) {
                         CreateTextWithEmoji(
-                            text = "✖ ${myUser.toBestDisplayName()}",
-                            tags = myUser.info?.latestMetadata?.tags,
+                            text = remember(innerUserState) { "✖ ${myUser.toBestDisplayName()}" },
+                            tags = tags,
                             color = Color.White,
                             textAlign = TextAlign.Center
                         )
@@ -537,6 +559,60 @@ private fun ForwardZapTo(
     }
 }
 
+@Composable
+private fun MarkAsSensitive(
+    postViewModel: NewPostViewModel,
+    onClick: () -> Unit
+) {
+    IconButton(
+        onClick = {
+            onClick()
+        }
+    ) {
+        Box(
+            Modifier
+                .height(20.dp)
+                .width(23.dp)
+        ) {
+            if (!postViewModel.wantsToMarkAsSensitive) {
+                Icon(
+                    imageVector = Icons.Default.Visibility,
+                    contentDescription = stringResource(R.string.content_warning),
+                    modifier = Modifier
+                        .size(18.dp)
+                        .align(Alignment.BottomStart),
+                    tint = MaterialTheme.colors.onBackground
+                )
+                Icon(
+                    imageVector = Icons.Rounded.Warning,
+                    contentDescription = stringResource(R.string.content_warning),
+                    modifier = Modifier
+                        .size(10.dp)
+                        .align(Alignment.TopEnd),
+                    tint = MaterialTheme.colors.onBackground
+                )
+            } else {
+                Icon(
+                    imageVector = Icons.Default.VisibilityOff,
+                    contentDescription = stringResource(id = R.string.content_warning),
+                    modifier = Modifier
+                        .size(18.dp)
+                        .align(Alignment.BottomStart),
+                    tint = Color.Red
+                )
+                Icon(
+                    imageVector = Icons.Rounded.Warning,
+                    contentDescription = stringResource(id = R.string.content_warning),
+                    modifier = Modifier
+                        .size(10.dp)
+                        .align(Alignment.TopEnd),
+                    tint = Color.Yellow
+                )
+            }
+        }
+    }
+}
+
 @Composable
 fun CloseButton(onCancel: () -> Unit) {
     Button(
@@ -662,7 +738,6 @@ fun ImageVideoDescription(
 ) {
     val resolver = LocalContext.current.contentResolver
     val mediaType = resolver.getType(uri) ?: ""
-    val scope = rememberCoroutineScope()
 
     val isImage = mediaType.startsWith("image")
     val isVideo = mediaType.startsWith("video")
@@ -679,8 +754,8 @@ fun ImageVideoDescription(
         Triple(ServersAvailable.NIP95, stringResource(id = R.string.upload_server_relays_nip95), stringResource(id = R.string.upload_server_relays_nip95_explainer))
     )
 
-    val fileServerOptions = fileServers.map { it.second }
-    val fileServerExplainers = fileServers.map { it.third }
+    val fileServerOptions = remember { fileServers.map { it.second }.toImmutableList() }
+    val fileServerExplainers = remember { fileServers.map { it.third }.toImmutableList() }
 
     var selectedServer by remember { mutableStateOf(defaultServer) }
     var message by remember { mutableStateOf("") }
@@ -765,7 +840,7 @@ fun ImageVideoDescription(
                     var bitmap by remember { mutableStateOf<Bitmap?>(null) }
 
                     LaunchedEffect(key1 = uri) {
-                        scope.launch(Dispatchers.IO) {
+                        launch(Dispatchers.IO) {
                             try {
                                 bitmap = resolver.loadThumbnail(uri, Size(1200, 1000), null)
                             } catch (e: Exception) {
@@ -786,7 +861,7 @@ fun ImageVideoDescription(
                         )
                     }
                 } else {
-                    VideoView(uri)
+                    VideoView(uri.toString())
                 }
             }
 
@@ -854,3 +929,10 @@ fun ImageVideoDescription(
         }
     }
 }
+
+@Stable
+data class ImmutableListOfLists<T>(val lists: List<List<T>> = emptyList())
+
+fun List<List<String>>.toImmutableListOfLists(): ImmutableListOfLists<String> {
+    return ImmutableListOfLists(this)
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostViewModel.kt

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.ui.actions
 
 import android.content.Context
 import android.net.Uri
+import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateMapOf
@@ -15,6 +16,7 @@ import androidx.lifecycle.viewModelScope
 import com.vitorpamplona.amethyst.model.*
 import com.vitorpamplona.amethyst.service.FileHeader
 import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
+import com.vitorpamplona.amethyst.service.model.BaseTextNoteEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 import com.vitorpamplona.amethyst.ui.components.isValidURL
@@ -23,7 +25,8 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 
-open class NewPostViewModel : ViewModel() {
+@Stable
+open class NewPostViewModel() : ViewModel() {
     var account: Account? = null
     var originalNote: Note? = null
 
@@ -67,10 +70,18 @@ open class NewPostViewModel : ViewModel() {
     var forwardZapTo by mutableStateOf<User?>(null)
     var forwardZapToEditting by mutableStateOf(TextFieldValue(""))
 
+    // NSFW, Sensitive
+    var wantsToMarkAsSensitive by mutableStateOf(false)
+
     open fun load(account: Account, replyingTo: Note?, quote: Note?) {
         originalNote = replyingTo
         replyingTo?.let { replyNote ->
-            this.replyTos = (replyNote.replyTo ?: emptyList()).plus(replyNote)
+            if (replyNote.event is BaseTextNoteEvent) {
+                this.replyTos = (replyNote.replyTo ?: emptyList()).plus(replyNote)
+            } else {
+                this.replyTos = listOf(replyNote)
+            }
+
             replyNote.author?.let { replyUser ->
                 val currentMentions = (replyNote.event as? TextNoteEvent)
                     ?.mentions()
@@ -93,10 +104,11 @@ open class NewPostViewModel : ViewModel() {
         }
 
         canAddInvoice = account.userProfile().info?.lnAddress() != null
-        canUsePoll = originalNote?.event !is PrivateDmEvent && originalNote?.channel() == null
+        canUsePoll = originalNote?.event !is PrivateDmEvent && originalNote?.channelHex() == null
         contentToAddUrl = null
 
         wantsForwardZapTo = false
+        wantsToMarkAsSensitive = false
         forwardZapTo = null
         forwardZapToEditting = TextFieldValue("")
 
@@ -104,7 +116,7 @@ open class NewPostViewModel : ViewModel() {
     }
 
     fun sendPost() {
-        val tagger = NewMessageTagger(originalNote?.channel(), mentions, replyTos, message.text)
+        val tagger = NewMessageTagger(originalNote?.channelHex(), mentions, replyTos, message.text)
         tagger.run()
 
         val zapReceiver = if (wantsForwardZapTo) {
@@ -118,13 +130,13 @@ open class NewPostViewModel : ViewModel() {
         }
 
         if (wantsPoll) {
-            account?.sendPoll(tagger.message, tagger.replyTos, tagger.mentions, pollOptions, valueMaximum, valueMinimum, consensusThreshold, closedAt, zapReceiver)
-        } else if (originalNote?.channel() != null) {
-            account?.sendChannelMessage(tagger.message, tagger.channel!!.idHex, tagger.replyTos, tagger.mentions, zapReceiver)
+            account?.sendPoll(tagger.message, tagger.replyTos, tagger.mentions, pollOptions, valueMaximum, valueMinimum, consensusThreshold, closedAt, zapReceiver, wantsToMarkAsSensitive)
+        } else if (originalNote?.channelHex() != null) {
+            account?.sendChannelMessage(tagger.message, tagger.channelHex!!, tagger.replyTos, tagger.mentions, zapReceiver, wantsToMarkAsSensitive)
         } else if (originalNote?.event is PrivateDmEvent) {
-            account?.sendPrivateMessage(tagger.message, originalNote!!.author!!.pubkeyHex, originalNote!!, tagger.mentions, zapReceiver)
+            account?.sendPrivateMessage(tagger.message, originalNote!!.author!!, originalNote!!, tagger.mentions, zapReceiver, wantsToMarkAsSensitive)
         } else {
-            account?.sendPost(tagger.message, tagger.replyTos, tagger.mentions, null, zapReceiver)
+            account?.sendPost(tagger.message, tagger.replyTos, tagger.mentions, null, zapReceiver, wantsToMarkAsSensitive)
         }
 
         cancel()
@@ -183,6 +195,7 @@ open class NewPostViewModel : ViewModel() {
         wantsInvoice = false
 
         wantsForwardZapTo = false
+        wantsToMarkAsSensitive = false
         forwardZapTo = null
         forwardZapToEditting = TextFieldValue("")
 
@@ -215,7 +228,11 @@ open class NewPostViewModel : ViewModel() {
             userSuggestionsMainMessage = true
             if (lastWord.startsWith("@") && lastWord.length > 2) {
                 NostrSearchEventOrUserDataSource.search(lastWord.removePrefix("@"))
-                userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@")).sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() })).reversed()
+                viewModelScope.launch(Dispatchers.IO) {
+                    userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@"))
+                        .sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() }))
+                        .reversed()
+                }
             } else {
                 NostrSearchEventOrUserDataSource.clear()
                 userSuggestions = emptyList()
@@ -231,7 +248,15 @@ open class NewPostViewModel : ViewModel() {
             userSuggestionsMainMessage = false
             if (lastWord.startsWith("@") && lastWord.length > 2) {
                 NostrSearchEventOrUserDataSource.search(lastWord.removePrefix("@"))
-                userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@")).sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() })).reversed()
+                viewModelScope.launch(Dispatchers.IO) {
+                    userSuggestions = LocalCache.findUsersStartingWith(lastWord.removePrefix("@"))
+                        .sortedWith(
+                            compareBy(
+                                { account?.isFollowing(it) },
+                                { it.toBestDisplayName() }
+                            )
+                        ).reversed()
+                }
             } else {
                 NostrSearchEventOrUserDataSource.clear()
                 userSuggestions = emptyList()

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewRelayListView.kt

@@ -49,18 +49,18 @@ import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.RelaySetupInfo
 import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import java.lang.Math.round
 
 @Composable
-fun NewRelayListView(onClose: () -> Unit, account: Account, relayToAdd: String = "") {
+fun NewRelayListView(onClose: () -> Unit, accountViewModel: AccountViewModel, relayToAdd: String = "") {
     val postViewModel: NewRelayListViewModel = viewModel()
     val feedState by postViewModel.relays.collectAsState()
 
     LaunchedEffect(Unit) {
-        postViewModel.load(account)
+        postViewModel.load(accountViewModel.account)
     }
 
     Dialog(

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewRelayListViewModel.kt

@@ -7,6 +7,7 @@ import com.vitorpamplona.amethyst.service.model.ContactListEvent
 import com.vitorpamplona.amethyst.service.relays.Constants
 import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.RelayPool
+import kotlinx.collections.immutable.toImmutableSet
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.update
@@ -46,7 +47,7 @@ class NewRelayListViewModel : ViewModel() {
             if (relayFile != null) {
                 relayFile.map {
                     val liveRelay = RelayPool.getRelay(it.key)
-                    val localInfoFeedTypes = account.localRelays.filter { localRelay -> localRelay.url == it.key }.firstOrNull()?.feedTypes ?: FeedType.values().toSet()
+                    val localInfoFeedTypes = account.localRelays.filter { localRelay -> localRelay.url == it.key }.firstOrNull()?.feedTypes ?: FeedType.values().toSet().toImmutableSet()
 
                     val errorCounter = liveRelay?.errorCounter ?: 0
                     val eventDownloadCounter = liveRelay?.eventDownloadCounterInBytes ?: 0

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewUserMetadataView.kt

@@ -28,6 +28,9 @@ import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Account
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 @Composable
 fun NewUserMetadataView(onClose: () -> Unit, account: Account) {
@@ -37,8 +40,12 @@ fun NewUserMetadataView(onClose: () -> Unit, account: Account) {
     LaunchedEffect(Unit) {
         postViewModel.load(account)
 
-        postViewModel.imageUploadingError.collect { error ->
-            Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+        launch(Dispatchers.IO) {
+            postViewModel.imageUploadingError.collect { error ->
+                withContext(Dispatchers.Main) {
+                    Toast.makeText(context, error, Toast.LENGTH_SHORT).show()
+                }
+            }
         }
     }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewUserMetadataViewModel.kt

@@ -13,6 +13,7 @@ import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.service.model.GitHubIdentity
 import com.vitorpamplona.amethyst.service.model.MastodonIdentity
 import com.vitorpamplona.amethyst.service.model.TwitterIdentity
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 import java.io.ByteArrayInputStream
@@ -119,7 +120,9 @@ class NewUserMetadataViewModel : ViewModel() {
         val writer = StringWriter()
         ObjectMapper().writeValue(writer, currentJson)
 
-        account.sendNewUserMetadata(writer.buffer.toString(), newClaims)
+        viewModelScope.launch(Dispatchers.IO) {
+            account.sendNewUserMetadata(writer.buffer.toString(), newClaims)
+        }
 
         clear()
     }

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/UploadFromGallery.kt

@@ -28,6 +28,8 @@ import com.google.accompanist.permissions.isGranted
 import com.google.accompanist.permissions.rememberPermissionState
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.ui.GetMediaActivityResultContract
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
 import java.util.concurrent.atomic.AtomicBoolean
 
 @OptIn(ExperimentalPermissionsApi::class)
@@ -99,21 +101,23 @@ private fun UploadBoxButton(
     }
 }
 
+val DefaultAnimationColors = listOf(
+    Color(0xFF5851D8),
+    Color(0xFF833AB4),
+    Color(0xFFC13584),
+    Color(0xFFE1306C),
+    Color(0xFFFD1D1D),
+    Color(0xFFF56040),
+    Color(0xFFF77737),
+    Color(0xFFFCAF45),
+    Color(0xFFFFDC80),
+    Color(0xFF5851D8)
+).toImmutableList()
+
 @Composable
 fun LoadingAnimation(
     indicatorSize: Dp = 20.dp,
-    circleColors: List<Color> = listOf(
-        Color(0xFF5851D8),
-        Color(0xFF833AB4),
-        Color(0xFFC13584),
-        Color(0xFFE1306C),
-        Color(0xFFFD1D1D),
-        Color(0xFFF56040),
-        Color(0xFFF77737),
-        Color(0xFFFCAF45),
-        Color(0xFFFFDC80),
-        Color(0xFF5851D8)
-    ),
+    circleColors: ImmutableList<Color> = DefaultAnimationColors,
     animationDuration: Int = 1000
 ) {
     val infiniteTransition = rememberInfiniteTransition()

app/src/main/java/com/vitorpamplona/amethyst/ui/buttons/ChannelFabColumn.kt

@@ -16,12 +16,12 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.ui.actions.JoinUserOrChannelView
 import com.vitorpamplona.amethyst.ui.actions.NewChannelView
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 @Composable
-fun ChannelFabColumn(account: Account, nav: (String) -> Unit) {
+fun ChannelFabColumn(accountViewModel: AccountViewModel, nav: (String) -> Unit) {
     var isOpen by remember {
         mutableStateOf(false)
     }
@@ -35,11 +35,11 @@ fun ChannelFabColumn(account: Account, nav: (String) -> Unit) {
     }
 
     if (wantsToCreateChannel) {
-        NewChannelView({ wantsToCreateChannel = false }, account = account)
+        NewChannelView({ wantsToCreateChannel = false }, accountViewModel = accountViewModel)
     }
 
     if (wantsToJoinChannelOrUser) {
-        JoinUserOrChannelView({ wantsToJoinChannelOrUser = false }, account = account, nav = nav)
+        JoinUserOrChannelView({ wantsToJoinChannelOrUser = false }, accountViewModel = accountViewModel, nav = nav)
     }
 
     Column() {

app/src/main/java/com/vitorpamplona/amethyst/ui/buttons/NewChannelButton.kt

@@ -19,17 +19,17 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.ui.actions.NewChannelView
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 @Composable
-fun NewChannelButton(account: Account) {
+fun NewChannelButton(accountViewModel: AccountViewModel) {
     var wantsToPost by remember {
         mutableStateOf(false)
     }
 
     if (wantsToPost) {
-        NewChannelView({ wantsToPost = false }, account = account)
+        NewChannelView({ wantsToPost = false }, accountViewModel = accountViewModel)
     }
 
     OutlinedButton(

app/src/main/java/com/vitorpamplona/amethyst/ui/buttons/NewNoteButton.kt

@@ -17,18 +17,17 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.ui.actions.NewPostView
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 @Composable
-fun NewNoteButton(account: Account, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+fun NewNoteButton(accountViewModel: AccountViewModel, nav: (String) -> Unit) {
     var wantsToPost by remember {
         mutableStateOf(false)
     }
 
     if (wantsToPost) {
-        NewPostView({ wantsToPost = false }, account = account, accountViewModel = accountViewModel, nav = nav)
+        NewPostView({ wantsToPost = false }, accountViewModel = accountViewModel, nav = nav)
     }
 
     OutlinedButton(

app/src/main/java/com/vitorpamplona/amethyst/ui/components/AsyncImageProxy.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.ui.components
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.ColorFilter
@@ -14,6 +15,7 @@ import coil.compose.AsyncImage
 import coil.compose.AsyncImagePainter
 import java.util.Base64
 
+@Immutable
 data class ResizeImage(val url: String?, val size: Dp) {
     fun proxyUrl(): String? {
         if (url == null) return null

app/src/main/java/com/vitorpamplona/amethyst/ui/components/BundledUpdate.kt

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -16,13 +17,12 @@ import java.util.concurrent.atomic.AtomicBoolean
  */
 class BundledUpdate(
     val delay: Long,
-    val dispatcher: CoroutineDispatcher = Dispatchers.Default,
-    val onUpdate: () -> Unit
+    val dispatcher: CoroutineDispatcher = Dispatchers.Default
 ) {
     private var onlyOneInBlock = AtomicBoolean()
     private var invalidatesAgain = false
 
-    fun invalidate(ignoreIfDoing: Boolean = false) {
+    fun invalidate(ignoreIfDoing: Boolean = false, onUpdate: suspend () -> Unit) {
         if (onlyOneInBlock.getAndSet(true)) {
             if (!ignoreIfDoing) {
                 invalidatesAgain = true
@@ -59,6 +59,8 @@ class BundledInsert<T>(
     private var queue = LinkedBlockingQueue<T>()
 
     fun invalidateList(newObject: T, onUpdate: suspend (Set<T>) -> Unit) {
+        checkNotInMainThread()
+
         queue.put(newObject)
         if (onlyOneInBlock.getAndSet(true)) {
             return

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableRoute.kt

@@ -13,7 +13,9 @@ import androidx.compose.material.LocalTextStyle
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.runtime.mutableStateOf
@@ -45,26 +47,61 @@ import com.vitorpamplona.amethyst.service.NIP30Parser
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.nip19.Nip19
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
+import com.vitorpamplona.amethyst.ui.actions.toImmutableListOfLists
+import com.vitorpamplona.amethyst.ui.note.LoadChannel
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.ImmutableMap
+import kotlinx.collections.immutable.persistentListOf
+import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.launch
 
 @Composable
 fun ClickableRoute(
     nip19: Nip19.Return,
     nav: (String) -> Unit
 ) {
-    if (nip19.type == Nip19.Type.USER) {
-        DisplayUser(nip19, nav)
-    } else if (nip19.type == Nip19.Type.ADDRESS) {
-        DisplayAddress(nip19, nav)
-    } else if (nip19.type == Nip19.Type.NOTE) {
-        DisplayNote(nip19, nav)
-    } else if (nip19.type == Nip19.Type.EVENT) {
-        DisplayEvent(nip19, nav)
-    } else {
-        Text(
-            "@${nip19.hex}${nip19.additionalChars} "
-        )
+    when (nip19.type) {
+        Nip19.Type.USER -> {
+            DisplayUser(nip19, nav)
+        }
+        Nip19.Type.ADDRESS -> {
+            DisplayAddress(nip19, nav)
+        }
+        Nip19.Type.NOTE -> {
+            DisplayNote(nip19, nav)
+        }
+        Nip19.Type.EVENT -> {
+            DisplayEvent(nip19, nav)
+        }
+        else -> {
+            Text(
+                remember {
+                    "@${nip19.hex}${nip19.additionalChars} "
+                }
+            )
+        }
+    }
+}
+
+@Composable
+private fun LoadNote(
+    hex: String,
+    content: @Composable (Note) -> Unit
+) {
+    var noteBase by remember(hex) { mutableStateOf<Note?>(null) }
+
+    LaunchedEffect(key1 = hex) {
+        if (noteBase == null) {
+            launch(Dispatchers.IO) {
+                noteBase = LocalCache.checkGetOrCreateNote(hex)
+            }
+        }
+    }
+
+    noteBase?.let {
+        content(it)
     }
 }
 
@@ -73,54 +110,8 @@ private fun DisplayEvent(
     nip19: Nip19.Return,
     nav: (String) -> Unit
 ) {
-    var noteBase by remember { mutableStateOf<Note?>(null) }
-
-    LaunchedEffect(key1 = nip19.hex) {
-        withContext(Dispatchers.IO) {
-            noteBase = LocalCache.checkGetOrCreateNote(nip19.hex)
-        }
-    }
-
-    noteBase?.let {
-        val noteState by it.live().metadata.observeAsState()
-        val note = remember(noteState) { noteState?.note } ?: return
-        val channel = remember(noteState) { note.channel() }
-
-        if (note.event is ChannelCreateEvent) {
-            CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Channel/${nip19.hex}",
-                nav = nav
-            )
-        } else if (note.event is PrivateDmEvent) {
-            CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Room/${note.author?.pubkeyHex}",
-                nav = nav
-            )
-        } else if (channel != null) {
-            CreateClickableText(
-                clickablePart = channel.toBestDisplayName(),
-                suffix = "${nip19.additionalChars} ",
-                route = "Channel/${channel.idHex}",
-                nav = nav
-            )
-        } else {
-            CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Event/${nip19.hex}",
-                nav = nav
-            )
-        }
-    }
-
-    if (noteBase == null) {
-        Text(
-            "@${nip19.hex}${nip19.additionalChars} "
-        )
+    LoadNote(nip19.hex) {
+        DisplayNoteLink(it, nip19, nav)
     }
 }
 
@@ -129,53 +120,61 @@ private fun DisplayNote(
     nip19: Nip19.Return,
     nav: (String) -> Unit
 ) {
-    var noteBase by remember { mutableStateOf<Note?>(null) }
-
-    LaunchedEffect(key1 = nip19.hex) {
-        withContext(Dispatchers.IO) {
-            noteBase = LocalCache.checkGetOrCreateNote(nip19.hex)
-        }
+    LoadNote(nip19.hex) {
+        DisplayNoteLink(it, nip19, nav)
     }
+}
 
-    noteBase?.let {
-        val noteState by it.live().metadata.observeAsState()
-        val note = remember(noteState) { noteState?.note } ?: return
-        val channel = note.channel()
+@Composable
+private fun DisplayNoteLink(
+    it: Note,
+    nip19: Nip19.Return,
+    nav: (String) -> Unit
+) {
+    val noteState by it.live().metadata.observeAsState()
+
+    val note = remember(noteState) { noteState?.note } ?: return
+
+    val channelHex = remember(noteState) { note.channelHex() }
+    val noteIdDisplayNote = remember(noteState) { "@${note.idDisplayNote()}" }
+    val addedCharts = remember { "${nip19.additionalChars} " }
+
+    if (note.event is ChannelCreateEvent || nip19.kind == ChannelCreateEvent.kind) {
+        CreateClickableText(
+            clickablePart = noteIdDisplayNote,
+            suffix = addedCharts,
+            route = remember(noteState) { "Channel/${nip19.hex}" },
+            nav = nav
+        )
+    } else if (note.event is PrivateDmEvent || nip19.kind == PrivateDmEvent.kind) {
+        CreateClickableText(
+            clickablePart = noteIdDisplayNote,
+            suffix = addedCharts,
+            route = remember(noteState) { "Room/${note.author?.pubkeyHex}" },
+            nav = nav
+        )
+    } else if (channelHex != null) {
+        LoadChannel(baseChannelHex = channelHex) { baseChannel ->
+            val channelState by baseChannel.live.observeAsState()
+            val channelDisplayName by remember(channelState) {
+                derivedStateOf {
+                    channelState?.channel?.toBestDisplayName() ?: noteIdDisplayNote
+                }
+            }
 
-        if (note.event is ChannelCreateEvent) {
             CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Channel/${nip19.hex}",
-                nav = nav
-            )
-        } else if (note.event is PrivateDmEvent) {
-            CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Room/${note.author?.pubkeyHex}",
-                nav = nav
-            )
-        } else if (channel != null) {
-            CreateClickableText(
-                clickablePart = channel.toBestDisplayName(),
-                suffix = "${nip19.additionalChars} ",
-                route = "Channel/${note.channel()?.idHex}",
-                nav = nav
-            )
-        } else {
-            CreateClickableText(
-                clickablePart = "@${note.idDisplayNote()}",
-                suffix = "${nip19.additionalChars} ",
-                route = "Note/${nip19.hex}",
+                clickablePart = channelDisplayName,
+                suffix = addedCharts,
+                route = remember(noteState) { "Channel/${baseChannel.idHex}" },
                 nav = nav
             )
         }
-    }
-
-    if (noteBase == null) {
-        Text(
-            "@${nip19.hex}${nip19.additionalChars} "
+    } else {
+        CreateClickableText(
+            clickablePart = noteIdDisplayNote,
+            suffix = addedCharts,
+            route = remember(noteState) { "Event/${nip19.hex}" },
+            nav = nav
         )
     }
 }
@@ -185,29 +184,34 @@ private fun DisplayAddress(
     nip19: Nip19.Return,
     nav: (String) -> Unit
 ) {
-    var noteBase by remember { mutableStateOf<Note?>(null) }
+    var noteBase by remember(nip19) { mutableStateOf<Note?>(null) }
 
     LaunchedEffect(key1 = nip19.hex) {
-        withContext(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             noteBase = LocalCache.checkGetOrCreateAddressableNote(nip19.hex)
         }
     }
 
     noteBase?.let {
         val noteState by it.live().metadata.observeAsState()
-        val note = remember(noteState) { noteState?.note } ?: return
+
+        val route = remember(noteState) { "Note/${nip19.hex}" }
+        val displayName = remember(noteState) { "@${noteState?.note?.idDisplayNote()}" }
+        val addedCharts = remember { "${nip19.additionalChars} " }
 
         CreateClickableText(
-            clickablePart = "@${note.idDisplayNote()}",
-            suffix = "${nip19.additionalChars} ",
-            route = "Note/${nip19.hex}",
+            clickablePart = displayName,
+            suffix = addedCharts,
+            route = route,
             nav = nav
         )
     }
 
     if (noteBase == null) {
         Text(
-            "@${nip19.hex}${nip19.additionalChars} "
+            remember {
+                "@${nip19.hex}${nip19.additionalChars} "
+            }
         )
     }
 }
@@ -217,24 +221,27 @@ private fun DisplayUser(
     nip19: Nip19.Return,
     nav: (String) -> Unit
 ) {
-    var userBase by remember { mutableStateOf<User?>(null) }
+    var userBase by remember(nip19) { mutableStateOf<User?>(null) }
 
     LaunchedEffect(key1 = nip19.hex) {
-        withContext(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             userBase = LocalCache.checkGetOrCreateUser(nip19.hex)
         }
     }
 
     userBase?.let {
         val userState by it.live().metadata.observeAsState()
-        val route = remember { "User/${it.pubkeyHex}" }
+        val route = remember(userState) { "User/${it.pubkeyHex}" }
         val userDisplayName = remember(userState) { userState?.user?.toBestDisplayName() }
-        val userTags = remember(userState) { userState?.user?.info?.latestMetadata?.tags }
+        val userTags = remember(userState) { userState?.user?.info?.latestMetadata?.tags?.toImmutableListOfLists() }
+        val addedCharts = remember {
+            "${nip19.additionalChars} "
+        }
 
         if (userDisplayName != null) {
             CreateClickableTextWithEmoji(
                 clickablePart = userDisplayName,
-                suffix = "${nip19.additionalChars} ",
+                suffix = addedCharts,
                 tags = userTags,
                 route = route,
                 nav = nav
@@ -244,7 +251,9 @@ private fun DisplayUser(
 
     if (userBase == null) {
         Text(
-            "@${nip19.hex}${nip19.additionalChars} "
+            remember {
+                "@${nip19.hex}${nip19.additionalChars} "
+            }
         )
     }
 }
@@ -278,7 +287,7 @@ fun CreateClickableText(
 @Composable
 fun CreateTextWithEmoji(
     text: String,
-    tags: List<List<String>>?,
+    tags: ImmutableListOfLists<String>?,
     color: Color = Color.Unspecified,
     textAlign: TextAlign? = null,
     fontWeight: FontWeight? = null,
@@ -287,32 +296,29 @@ fun CreateTextWithEmoji(
     overflow: TextOverflow = TextOverflow.Clip,
     modifier: Modifier = Modifier
 ) {
-    val emojis = remember {
-        tags?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+    var emojiList by remember(text) { mutableStateOf<ImmutableList<Renderable>>(persistentListOf()) }
+
+    LaunchedEffect(key1 = text) {
+        launch(Dispatchers.Default) {
+            val emojis =
+                tags?.lists?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+
+            if (emojis.isNotEmpty()) {
+                val newEmojiList = assembleAnnotatedList(text, emojis)
+                if (newEmojiList.isNotEmpty()) {
+                    emojiList = newEmojiList.toImmutableList()
+                }
+            }
+        }
     }
 
-    CreateTextWithEmoji(text, emojis, color, textAlign, fontWeight, fontSize, maxLines, overflow, modifier)
-}
-
-@Composable
-fun CreateTextWithEmoji(
-    text: String,
-    emojis: Map<String, String>,
-    color: Color = Color.Unspecified,
-    textAlign: TextAlign? = null,
-    fontWeight: FontWeight? = null,
-    fontSize: TextUnit = TextUnit.Unspecified,
-    maxLines: Int = Int.MAX_VALUE,
-    overflow: TextOverflow = TextOverflow.Clip,
-    modifier: Modifier = Modifier
-) {
     val textColor = color.takeOrElse {
         LocalTextStyle.current.color.takeOrElse {
             LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
         }
     }
 
-    if (emojis.isEmpty()) {
+    if (emojiList.isEmpty()) {
         Text(
             text = text,
             color = textColor,
@@ -324,10 +330,6 @@ fun CreateTextWithEmoji(
             modifier = modifier
         )
     } else {
-        val myList = remember {
-            assembleAnnotatedList(text, emojis)
-        }
-
         val style = LocalTextStyle.current.merge(
             TextStyle(
                 color = textColor,
@@ -337,33 +339,97 @@ fun CreateTextWithEmoji(
             )
         ).toSpanStyle()
 
-        InLineIconRenderer(myList, style, maxLines, overflow, modifier)
+        InLineIconRenderer(emojiList, style, maxLines, overflow, modifier)
+    }
+}
+
+@Composable
+fun CreateTextWithEmoji(
+    text: String,
+    emojis: ImmutableMap<String, String>,
+    color: Color = Color.Unspecified,
+    textAlign: TextAlign? = null,
+    fontWeight: FontWeight? = null,
+    fontSize: TextUnit = TextUnit.Unspecified,
+    maxLines: Int = Int.MAX_VALUE,
+    overflow: TextOverflow = TextOverflow.Clip,
+    modifier: Modifier = Modifier
+) {
+    var emojiList by remember(text) { mutableStateOf<ImmutableList<Renderable>>(persistentListOf()) }
+
+    LaunchedEffect(key1 = text) {
+        if (emojis.isNotEmpty()) {
+            launch(Dispatchers.Default) {
+                val newEmojiList = assembleAnnotatedList(text, emojis)
+                if (newEmojiList.isNotEmpty()) {
+                    emojiList = newEmojiList.toImmutableList()
+                }
+            }
+        }
+    }
+
+    val textColor = color.takeOrElse {
+        LocalTextStyle.current.color.takeOrElse {
+            LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
+        }
+    }
+
+    if (emojiList.isEmpty()) {
+        Text(
+            text = text,
+            color = textColor,
+            textAlign = textAlign,
+            fontWeight = fontWeight,
+            fontSize = fontSize,
+            maxLines = maxLines,
+            overflow = overflow,
+            modifier = modifier
+        )
+    } else {
+        val style = LocalTextStyle.current.merge(
+            TextStyle(
+                color = textColor,
+                textAlign = textAlign,
+                fontWeight = fontWeight,
+                fontSize = fontSize
+            )
+        ).toSpanStyle()
+
+        InLineIconRenderer(emojiList, style, maxLines, overflow, modifier)
     }
 }
 
 @Composable
 fun CreateClickableTextWithEmoji(
     clickablePart: String,
-    tags: List<List<String>>?,
+    tags: ImmutableListOfLists<String>?,
     style: TextStyle,
     onClick: (Int) -> Unit
 ) {
-    val emojis = remember(tags) {
-        tags?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+    var emojiList by remember(clickablePart) { mutableStateOf<ImmutableList<Renderable>>(persistentListOf()) }
+
+    LaunchedEffect(key1 = clickablePart) {
+        launch(Dispatchers.Default) {
+            val emojis =
+                tags?.lists?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+
+            if (emojis.isNotEmpty()) {
+                val newEmojiList = assembleAnnotatedList(clickablePart, emojis)
+                if (newEmojiList.isNotEmpty()) {
+                    emojiList = newEmojiList.toImmutableList()
+                }
+            }
+        }
     }
 
-    if (emojis.isEmpty()) {
+    if (emojiList.isEmpty()) {
         ClickableText(
             AnnotatedString(clickablePart),
             style = style,
             onClick = onClick
         )
     } else {
-        val myList = remember {
-            assembleAnnotatedList(clickablePart, emojis)
-        }
-
-        ClickableInLineIconRenderer(myList, style.toSpanStyle()) {
+        ClickableInLineIconRenderer(emojiList, style.toSpanStyle()) {
             onClick(it)
         }
     }
@@ -373,36 +439,44 @@ fun CreateClickableTextWithEmoji(
 fun CreateClickableTextWithEmoji(
     clickablePart: String,
     suffix: String,
-    tags: List<List<String>>?,
+    tags: ImmutableListOfLists<String>?,
     overrideColor: Color? = null,
     fontWeight: FontWeight = FontWeight.Normal,
     route: String,
     nav: (String) -> Unit
 ) {
-    val emojis = remember(tags) {
-        tags?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+    var emojiLists by remember(clickablePart) {
+        mutableStateOf<Pair<ImmutableList<Renderable>, ImmutableList<Renderable>>?>(null)
     }
 
-    if (emojis.isEmpty()) {
+    LaunchedEffect(key1 = clickablePart) {
+        launch(Dispatchers.Default) {
+            val emojis =
+                tags?.lists?.filter { it.size > 2 && it[0] == "emoji" }?.associate { ":${it[1]}:" to it[2] } ?: emptyMap()
+
+            if (emojis.isNotEmpty()) {
+                val newEmojiList1 = assembleAnnotatedList(clickablePart, emojis)
+                val newEmojiList2 = assembleAnnotatedList(suffix, emojis)
+
+                if (newEmojiList1.isNotEmpty() || newEmojiList2.isNotEmpty()) {
+                    emojiLists = Pair(newEmojiList1.toImmutableList(), newEmojiList2.toImmutableList())
+                }
+            }
+        }
+    }
+
+    if (emojiLists == null) {
         CreateClickableText(clickablePart, suffix, overrideColor, fontWeight, route, nav)
     } else {
-        val myList = remember {
-            assembleAnnotatedList(clickablePart, emojis)
-        }
-
-        ClickableInLineIconRenderer(myList, LocalTextStyle.current.copy(color = overrideColor ?: MaterialTheme.colors.primary, fontWeight = fontWeight).toSpanStyle()) {
+        ClickableInLineIconRenderer(emojiLists!!.first, LocalTextStyle.current.copy(color = overrideColor ?: MaterialTheme.colors.primary, fontWeight = fontWeight).toSpanStyle()) {
             nav(route)
         }
 
-        val myList2 = remember {
-            assembleAnnotatedList(suffix, emojis)
-        }
-
-        InLineIconRenderer(myList2, LocalTextStyle.current.copy(color = overrideColor ?: MaterialTheme.colors.onBackground, fontWeight = fontWeight).toSpanStyle())
+        InLineIconRenderer(emojiLists!!.second, LocalTextStyle.current.copy(color = overrideColor ?: MaterialTheme.colors.onBackground, fontWeight = fontWeight).toSpanStyle())
     }
 }
 
-fun assembleAnnotatedList(text: String, emojis: Map<String, String>): List<Renderable> {
+suspend fun assembleAnnotatedList(text: String, emojis: Map<String, String>): ImmutableList<Renderable> {
     return NIP30Parser().buildArray(text).map {
         val url = emojis[it]
         if (url != null) {
@@ -410,15 +484,20 @@ fun assembleAnnotatedList(text: String, emojis: Map<String, String>): List<Rende
         } else {
             TextType(it)
         }
-    }
+    }.toImmutableList()
 }
 
+@Immutable
 open class Renderable()
+
+@Immutable
 class TextType(val text: String) : Renderable()
+
+@Immutable
 class ImageUrlType(val url: String) : Renderable()
 
 @Composable
-fun ClickableInLineIconRenderer(wordsInOrder: List<Renderable>, style: SpanStyle, onClick: (Int) -> Unit) {
+fun ClickableInLineIconRenderer(wordsInOrder: ImmutableList<Renderable>, style: SpanStyle, onClick: (Int) -> Unit) {
     val inlineContent = wordsInOrder.mapIndexedNotNull { idx, value ->
         if (value is ImageUrlType) {
             Pair(
@@ -433,7 +512,9 @@ fun ClickableInLineIconRenderer(wordsInOrder: List<Renderable>, style: SpanStyle
                     AsyncImage(
                         model = value.url,
                         contentDescription = null,
-                        modifier = Modifier.fillMaxSize().padding(1.dp)
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(1.dp)
                     )
                 }
             )
@@ -477,7 +558,7 @@ fun ClickableInLineIconRenderer(wordsInOrder: List<Renderable>, style: SpanStyle
 
 @Composable
 fun InLineIconRenderer(
-    wordsInOrder: List<Renderable>,
+    wordsInOrder: ImmutableList<Renderable>,
     style: SpanStyle,
     maxLines: Int = Int.MAX_VALUE,
     overflow: TextOverflow = TextOverflow.Clip,
@@ -489,15 +570,17 @@ fun InLineIconRenderer(
                 "inlineContent$idx",
                 InlineTextContent(
                     Placeholder(
-                        width = 17.sp,
-                        height = 17.sp,
+                        width = 20.sp,
+                        height = 20.sp,
                         placeholderVerticalAlign = PlaceholderVerticalAlign.Center
                     )
                 ) {
                     AsyncImage(
                         model = value.url,
                         contentDescription = null,
-                        modifier = Modifier.fillMaxSize().padding(1.dp)
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(horizontal = 1.dp)
                     )
                 }
             )

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableUrl.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.text.ClickableText
 import androidx.compose.material.LocalTextStyle
 import androidx.compose.material.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.text.AnnotatedString
 
@@ -11,10 +12,16 @@ import androidx.compose.ui.text.AnnotatedString
 fun ClickableUrl(urlText: String, url: String) {
     val uri = LocalUriHandler.current
 
-    val doubleCheckedUrl = if (url.contains("://")) url else "https://$url"
+    val doubleCheckedUrl = remember(url) {
+        if (url.contains("://")) url else "https://$url"
+    }
+
+    val text = remember(urlText) {
+        AnnotatedString(urlText)
+    }
 
     ClickableText(
-        text = AnnotatedString(urlText),
+        text = text,
         onClick = { runCatching { uri.openUri(doubleCheckedUrl) } },
         style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
     )

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableUserTag.kt

@@ -6,6 +6,7 @@ import androidx.compose.material.MaterialTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.remember
 import androidx.compose.ui.text.AnnotatedString
 import com.vitorpamplona.amethyst.model.User
 
@@ -14,10 +15,19 @@ fun ClickableUserTag(
     user: User,
     nav: (String) -> Unit
 ) {
+    val route = remember {
+        "User/${user.pubkeyHex}"
+    }
+
     val innerUserState by user.live().metadata.observeAsState()
+
+    val userName = remember(innerUserState) {
+        AnnotatedString("@${innerUserState?.user?.toBestDisplayName()}")
+    }
+
     ClickableText(
-        text = AnnotatedString("@${innerUserState?.user?.toBestDisplayName()}"),
-        onClick = { nav("User/${innerUserState?.user?.pubkeyHex}") },
+        text = userName,
+        onClick = { nav(route) },
         style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
     )
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ClickableWithdrawal.kt

@@ -13,14 +13,14 @@ import androidx.compose.ui.text.style.TextDirection
 import androidx.core.content.ContextCompat
 import com.vitorpamplona.amethyst.service.lnurl.LnWithdrawalUtil
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.launch
 
 @Composable
 fun MayBeWithdrawal(lnurlWord: String) {
     var lnWithdrawal by remember { mutableStateOf<String?>(null) }
 
     LaunchedEffect(key1 = lnurlWord) {
-        withContext(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             lnWithdrawal = LnWithdrawalUtil.findWithdrawal(lnurlWord)
         }
     }
@@ -38,11 +38,19 @@ fun MayBeWithdrawal(lnurlWord: String) {
 fun ClickableWithdrawal(withdrawalString: String) {
     val context = LocalContext.current
 
+    val uri = remember(withdrawalString) {
+        Uri.parse("lightning:$withdrawalString")
+    }
+
+    val withdraw = remember(withdrawalString) {
+        AnnotatedString("$withdrawalString ")
+    }
+
     ClickableText(
-        text = AnnotatedString("$withdrawalString "),
+        text = withdraw,
         onClick = {
             runCatching {
-                val intent = Intent(Intent.ACTION_VIEW, Uri.parse("lightning:$withdrawalString"))
+                val intent = Intent(Intent.ACTION_VIEW, uri)
                 ContextCompat.startActivity(context, intent, null)
             }
         },

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ExpandableRichTextViewer.kt

@@ -26,6 +26,7 @@ import androidx.compose.ui.graphics.compositeOver
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 
 const val SHORT_TEXT_LENGTH = 350
@@ -34,8 +35,8 @@ const val SHORT_TEXT_LENGTH = 350
 fun ExpandableRichTextViewer(
     content: String,
     canPreview: Boolean,
-    modifier: Modifier = Modifier,
-    tags: List<List<String>>?,
+    modifier: Modifier,
+    tags: ImmutableListOfLists<String>,
     backgroundColor: Color,
     accountViewModel: AccountViewModel,
     nav: (String) -> Unit
@@ -87,18 +88,26 @@ fun ExpandableRichTextViewer(
                         )
                     )
             ) {
-                Button(
-                    modifier = Modifier.padding(top = 10.dp),
-                    onClick = { showFullText = !showFullText },
-                    shape = RoundedCornerShape(20.dp),
-                    colors = ButtonDefaults.buttonColors(
-                        backgroundColor = MaterialTheme.colors.primary.copy(alpha = 0.32f).compositeOver(MaterialTheme.colors.background)
-                    ),
-                    contentPadding = PaddingValues(vertical = 6.dp, horizontal = 16.dp)
-                ) {
-                    Text(text = stringResource(R.string.show_more), color = Color.White)
+                ShowMoreButton() {
+                    showFullText = !showFullText
                 }
             }
         }
     }
 }
+
+@Composable
+private fun ShowMoreButton(onClick: () -> Unit) {
+    Button(
+        modifier = Modifier.padding(top = 10.dp),
+        onClick = onClick,
+        shape = RoundedCornerShape(20.dp),
+        colors = ButtonDefaults.buttonColors(
+            backgroundColor = MaterialTheme.colors.primary.copy(alpha = 0.32f)
+                .compositeOver(MaterialTheme.colors.background)
+        ),
+        contentPadding = PaddingValues(vertical = 6.dp, horizontal = 16.dp)
+    ) {
+        Text(text = stringResource(R.string.show_more), color = Color.White)
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/InvoicePreview.kt

@@ -27,19 +27,18 @@ import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
-import java.math.BigDecimal
 import java.text.NumberFormat
 
 @Composable
 fun MayBeInvoicePreview(lnbcWord: String) {
-    var lnInvoice by remember { mutableStateOf<Pair<String, BigDecimal?>?>(null) }
+    var lnInvoice by remember { mutableStateOf<Pair<String, String?>?>(null) }
 
     LaunchedEffect(key1 = lnbcWord) {
         withContext(Dispatchers.IO) {
             val myInvoice = LnInvoiceUtil.findInvoice(lnbcWord)
             if (myInvoice != null) {
                 val myInvoiceAmount = try {
-                    LnInvoiceUtil.getAmountInSats(myInvoice)
+                    NumberFormat.getInstance().format(LnInvoiceUtil.getAmountInSats(myInvoice))
                 } catch (e: Exception) {
                     e.printStackTrace()
                     null
@@ -60,7 +59,7 @@ fun MayBeInvoicePreview(lnbcWord: String) {
 }
 
 @Composable
-fun InvoicePreview(lnInvoice: String, amount: BigDecimal?) {
+fun InvoicePreview(lnInvoice: String, amount: String?) {
     val context = LocalContext.current
 
     Column(
@@ -100,9 +99,7 @@ fun InvoicePreview(lnInvoice: String, amount: BigDecimal?) {
 
             amount?.let {
                 Text(
-                    text = "${
-                    NumberFormat.getInstance().format(amount)
-                    } ${stringResource(id = R.string.sats)}",
+                    text = "$it ${stringResource(id = R.string.sats)}",
                     fontSize = 25.sp,
                     fontWeight = FontWeight.W500,
                     modifier = Modifier

app/src/main/java/com/vitorpamplona/amethyst/ui/components/Robohash.kt

@@ -12,6 +12,7 @@ import coil.fetch.SourceResult
 import coil.request.ImageRequest
 import coil.request.Options
 import coil.size.Size
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import okio.Buffer
 import java.security.MessageDigest
 
@@ -21,8 +22,6 @@ private fun toHex(color: Color): String {
     return String.format("#%06X", rgb)
 }
 
-private val sha256: MessageDigest = MessageDigest.getInstance("SHA-256")
-
 private fun byteMod10(byte: Byte): Int {
     val ub = byte.toUByte().toInt()
     return ub % 10
@@ -33,7 +32,7 @@ private fun bytesToRGB(b1: Byte, b2: Byte, b3: Byte): Color {
 }
 
 private fun svgString(msg: String): String {
-    val hash = sha256.digest(msg.toByteArray())
+    val hash = MessageDigest.getInstance("SHA-256").digest(msg.toByteArray())
     val hashHex = hash.joinToString(separator = "") { b -> "%02x".format(b) }
     val bgColor = bytesToRGB(hash[0], hash[1], hash[2])
     val fgColor = bytesToRGB(hash[3], hash[4], hash[5])
@@ -67,6 +66,7 @@ class HashImageFetcher(
 ) : Fetcher {
 
     override suspend fun fetch(): SourceResult {
+        checkNotInMainThread()
         val source = try {
             Buffer().apply { write(svgString(data.toString()).toByteArray()) }
         } finally {

app/src/main/java/com/vitorpamplona/amethyst/ui/components/SensitivityWarning.kt

@@ -0,0 +1,127 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.Button
+import androidx.compose.material.ButtonDefaults
+import androidx.compose.material.Icon
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.rounded.Warning
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun SensitivityWarning(
+    hasSensitiveContent: Boolean,
+    accountViewModel: AccountViewModel,
+    content: @Composable () -> Unit
+) {
+    val accountState by accountViewModel.accountLiveData.observeAsState()
+
+    var showContentWarningNote by remember(accountState) {
+        mutableStateOf(accountState?.account?.showSensitiveContent != true && hasSensitiveContent)
+    }
+
+    if (showContentWarningNote) {
+        ContentWarningNote() {
+            showContentWarningNote = false
+        }
+    } else {
+        content()
+    }
+}
+
+@Composable
+fun ContentWarningNote(onDismiss: () -> Unit) {
+    Column() {
+        Row(modifier = Modifier.padding(horizontal = 12.dp)) {
+            Column(modifier = Modifier.padding(start = 10.dp)) {
+                Row(Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Center) {
+                    Box(
+                        Modifier
+                            .height(80.dp)
+                            .width(90.dp)
+                    ) {
+                        Icon(
+                            imageVector = Icons.Default.Visibility,
+                            contentDescription = stringResource(R.string.content_warning),
+                            modifier = Modifier
+                                .size(70.dp)
+                                .align(Alignment.BottomStart),
+                            tint = MaterialTheme.colors.onBackground
+                        )
+                        Icon(
+                            imageVector = Icons.Rounded.Warning,
+                            contentDescription = stringResource(R.string.content_warning),
+                            modifier = Modifier
+                                .size(30.dp)
+                                .align(Alignment.TopEnd),
+                            tint = MaterialTheme.colors.onBackground
+                        )
+                    }
+                }
+
+                Row(Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Center) {
+                    Text(
+                        text = stringResource(R.string.content_warning),
+                        fontWeight = FontWeight.Bold,
+                        fontSize = 18.sp
+                    )
+                }
+
+                Row() {
+                    Text(
+                        text = stringResource(R.string.content_warning_explanation),
+                        color = Color.Gray,
+                        modifier = Modifier.padding(top = 10.dp),
+                        textAlign = TextAlign.Center
+                    )
+                }
+
+                Row(Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Center) {
+                    Button(
+                        modifier = Modifier.padding(top = 10.dp),
+                        onClick = onDismiss,
+                        shape = RoundedCornerShape(20.dp),
+                        colors = ButtonDefaults
+                            .buttonColors(
+                                backgroundColor = MaterialTheme.colors.primary
+                            ),
+                        contentPadding = PaddingValues(vertical = 6.dp, horizontal = 16.dp)
+                    ) {
+                        Text(
+                            text = stringResource(R.string.show_anyway),
+                            color = Color.White
+                        )
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/components/TextSpinner.kt

@@ -31,13 +31,14 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
+import kotlinx.collections.immutable.ImmutableList
 
 @Composable
 fun TextSpinner(
     label: String,
     placeholder: String,
-    options: List<String>,
-    explainers: List<String>? = null,
+    options: ImmutableList<String>,
+    explainers: ImmutableList<String>? = null,
     onSelect: (Int) -> Unit,
     modifier: Modifier = Modifier
 ) {
@@ -83,7 +84,12 @@ fun TextSpinner(
 }
 
 @Composable
-fun SpinnerSelectionDialog(options: List<String>, explainers: List<String>?, onDismiss: () -> Unit, onSelect: (Int) -> Unit) {
+fun SpinnerSelectionDialog(
+    options: ImmutableList<String>,
+    explainers: ImmutableList<String>?,
+    onDismiss: () -> Unit,
+    onSelect: (Int) -> Unit
+) {
     Dialog(onDismissRequest = onDismiss) {
         Surface(
             border = BorderStroke(0.25.dp, Color.LightGray),

app/src/main/java/com/vitorpamplona/amethyst/ui/components/UrlPreview.kt

@@ -7,7 +7,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
 import com.vitorpamplona.amethyst.R
@@ -21,7 +20,7 @@ import kotlinx.coroutines.launch
 fun UrlPreview(url: String, urlText: String) {
     val context = LocalContext.current
 
-    var urlPreviewState by remember {
+    var urlPreviewState by remember(url) {
         val default = UrlCachedPreviewer.cache[url]?.let {
             if (it.allFetchComplete() && it.url == url) {
                 UrlPreviewState.Loaded(it)
@@ -32,12 +31,11 @@ fun UrlPreview(url: String, urlText: String) {
 
         mutableStateOf(default)
     }
-    val scope = rememberCoroutineScope()
 
     // Doesn't use a viewModel because of viewModel reusing issues (too many UrlPreview are created).
     LaunchedEffect(url) {
         if (urlPreviewState == UrlPreviewState.Loading) {
-            scope.launch(Dispatchers.IO) {
+            launch(Dispatchers.IO) {
                 UrlCachedPreviewer.previewInfo(
                     url,
                     object : IUrlPreviewCallback {

app/src/main/java/com/vitorpamplona/amethyst/ui/components/UrlPreviewCard.kt

@@ -10,7 +10,6 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
@@ -22,7 +21,6 @@ import androidx.compose.ui.unit.dp
 import coil.compose.AsyncImage
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.service.previews.UrlInfoItem
-import java.net.URL
 
 @Composable
 fun UrlPreviewCard(
@@ -42,26 +40,15 @@ fun UrlPreviewCard(
             )
     ) {
         Column {
-            val validatedUrl = remember { URL(previewInfo.url) }
-
-            // correctly treating relative images
-            val imageUrl = remember {
-                if (previewInfo.image.startsWith("/")) {
-                    URL(validatedUrl, previewInfo.image).toString()
-                } else {
-                    previewInfo.image
-                }
-            }
-
             AsyncImage(
-                model = imageUrl,
-                contentDescription = stringResource(R.string.preview_card_image_for, validatedUrl),
+                model = previewInfo.imageUrlFullPath,
+                contentDescription = stringResource(R.string.preview_card_image_for, previewInfo.url),
                 contentScale = ContentScale.FillWidth,
                 modifier = Modifier.fillMaxWidth()
             )
 
             Text(
-                text = validatedUrl.host,
+                text = previewInfo.verifiedUrl?.host ?: previewInfo.url,
                 style = MaterialTheme.typography.caption,
                 modifier = Modifier
                     .fillMaxWidth()

app/src/main/java/com/vitorpamplona/amethyst/ui/components/UrlPreviewState.kt

@@ -1,7 +1,9 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.service.previews.UrlInfoItem
 
+@Immutable
 sealed class UrlPreviewState {
     object Loading : UrlPreviewState()
     class Loaded(val previewInfo: UrlInfoItem) : UrlPreviewState()

app/src/main/java/com/vitorpamplona/amethyst/ui/components/VideoView.kt

@@ -1,7 +1,6 @@
 package com.vitorpamplona.amethyst.ui.components
 
 import android.graphics.drawable.Drawable
-import android.net.Uri
 import android.util.Log
 import android.view.View
 import android.view.ViewGroup
@@ -26,11 +25,10 @@ import androidx.compose.material.icons.filled.VolumeUp
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -46,7 +44,6 @@ import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.isFinite
 import androidx.compose.ui.viewinterop.AndroidView
-import androidx.core.net.toUri
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import coil.imageLoader
@@ -54,7 +51,6 @@ import coil.request.ImageRequest
 import com.google.android.exoplayer2.C
 import com.google.android.exoplayer2.ExoPlayer
 import com.google.android.exoplayer2.MediaItem
-import com.google.android.exoplayer2.MediaMetadata
 import com.google.android.exoplayer2.Player
 import com.google.android.exoplayer2.source.ProgressiveMediaSource
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout
@@ -62,31 +58,17 @@ import com.google.android.exoplayer2.ui.StyledPlayerView
 import com.vitorpamplona.amethyst.VideoCache
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import java.io.File
 
-public var muted = mutableStateOf(true)
+public var DefaultMutedSetting = mutableStateOf(true)
 
 @Composable
-fun VideoView(localFile: File?, description: String? = null, onDialog: ((Boolean) -> Unit)? = null) {
-    if (localFile != null) {
-        VideoView(localFile.toUri(), description, null, onDialog)
-    }
-}
-
-@Composable
-fun VideoView(videoUri: String, description: String? = null, onDialog: ((Boolean) -> Unit)? = null) {
-    VideoView(Uri.parse(videoUri), description, null, onDialog)
-}
-
-@Composable
-fun VideoView(videoUri: String, description: String? = null, thumbUri: String, onDialog: ((Boolean) -> Unit)? = null) {
+fun LoadThumbAndThenVideoView(videoUri: String, description: String? = null, thumbUri: String, onDialog: ((Boolean) -> Unit)? = null) {
     var loadingFinished by remember { mutableStateOf<Pair<Boolean, Drawable?>>(Pair(false, null)) }
 
     val context = LocalContext.current
-    val scope = rememberCoroutineScope()
 
     LaunchedEffect(Unit) {
-        scope.launch(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             try {
                 val request = ImageRequest.Builder(context).data(thumbUri).build()
                 val myCover = context.imageLoader.execute(request).drawable
@@ -104,36 +86,37 @@ fun VideoView(videoUri: String, description: String? = null, thumbUri: String, o
 
     if (loadingFinished.first) {
         if (loadingFinished.second != null) {
-            VideoView(Uri.parse(videoUri), description, loadingFinished.second, onDialog)
+            VideoView(videoUri, description, VideoThumb(loadingFinished.second), onDialog)
         } else {
-            VideoView(videoUri, description, onDialog)
+            VideoView(videoUri, description, null, onDialog)
         }
     }
 }
 
 @Composable
-fun VideoView(videoUri: Uri, description: String? = null, thumb: Drawable? = null, onDialog: ((Boolean) -> Unit)? = null) {
+fun VideoView(videoUri: String, description: String? = null, thumb: VideoThumb? = null, onDialog: ((Boolean) -> Unit)? = null) {
     val context = LocalContext.current
     val lifecycleOwner = rememberUpdatedState(LocalLifecycleOwner.current)
 
-    println("loading audio with artwork $thumb")
+    var exoPlayerData by remember { mutableStateOf<VideoPlayer?>(null) }
+    val defaultVolume = remember { if (DefaultMutedSetting.value) 0f else 1f }
 
-    val exoPlayer = remember(videoUri) {
-        val mediaBuilder = MediaItem.Builder().setUri(videoUri)
-
-        description?.let {
-            mediaBuilder.setMediaMetadata(
-                MediaMetadata.Builder().setDisplayTitle(it).build()
-            )
+    LaunchedEffect(key1 = videoUri) {
+        if (exoPlayerData == null) {
+            launch(Dispatchers.Default) {
+                exoPlayerData = VideoPlayer(ExoPlayer.Builder(context).build())
+            }
         }
+    }
 
-        val media = mediaBuilder.build()
+    exoPlayerData?.let {
+        val media = remember { MediaItem.Builder().setUri(videoUri).build() }
 
-        ExoPlayer.Builder(context).build().apply {
+        it.exoPlayer.apply {
             repeatMode = Player.REPEAT_MODE_ALL
             videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT
-            volume = 0f
-            if (videoUri.scheme?.startsWith("file") == true) {
+            volume = defaultVolume
+            if (videoUri.startsWith("file") == true) {
                 setMediaItem(media)
             } else {
                 setMediaSource(
@@ -144,56 +127,15 @@ fun VideoView(videoUri: Uri, description: String? = null, thumb: Drawable? = nul
             }
             prepare()
         }
+
+        RenderVideoPlayer(it, thumb, onDialog)
     }
 
-    LaunchedEffect(key1 = muted.value) {
-        exoPlayer.volume = if (muted.value) 0f else 1f
-    }
-
-    DisposableEffect(
-        BoxWithConstraints() {
-            AndroidView(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .defaultMinSize(minHeight = 70.dp)
-                    .align(Alignment.Center)
-                    .onVisibilityChanges { visible ->
-                        if (visible && !exoPlayer.isPlaying) {
-                            exoPlayer.play()
-                        } else if (!visible && exoPlayer.isPlaying) {
-                            exoPlayer.pause()
-                        }
-                    },
-                factory = {
-                    StyledPlayerView(context).apply {
-                        player = exoPlayer
-                        layoutParams = FrameLayout.LayoutParams(
-                            ViewGroup.LayoutParams.MATCH_PARENT,
-                            ViewGroup.LayoutParams.WRAP_CONTENT
-                        )
-                        controllerAutoShow = false
-                        thumb?.let { defaultArtwork = thumb }
-                        hideController()
-                        resizeMode = if (maxHeight.isFinite) AspectRatioFrameLayout.RESIZE_MODE_FIT else AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
-                        onDialog?.let { innerOnDialog ->
-                            setFullscreenButtonClickListener {
-                                exoPlayer.pause()
-                                innerOnDialog(it)
-                            }
-                        }
-                    }
-                }
-            )
-
-            MuteButton(muted, Modifier) {
-                muted.value = !muted.value
-            }
-        }
-    ) {
+    DisposableEffect(Unit) {
         val observer = LifecycleEventObserver { _, event ->
             when (event) {
                 Lifecycle.Event.ON_PAUSE -> {
-                    exoPlayer.pause()
+                    exoPlayerData?.exoPlayer?.pause()
                 }
                 else -> {}
             }
@@ -202,24 +144,82 @@ fun VideoView(videoUri: Uri, description: String? = null, thumb: Drawable? = nul
         lifecycle.addObserver(observer)
 
         onDispose {
-            exoPlayer.release()
+            exoPlayerData?.exoPlayer?.release()
             lifecycle.removeObserver(observer)
         }
     }
 }
 
+@Stable
+data class VideoPlayer(
+    val exoPlayer: ExoPlayer
+)
+
+@Stable
+data class VideoThumb(
+    val thumb: Drawable?
+)
+
+@Composable
+private fun RenderVideoPlayer(
+    playerData: VideoPlayer,
+    thumbData: VideoThumb?,
+    onDialog: ((Boolean) -> Unit)?
+) {
+    val context = LocalContext.current
+
+    BoxWithConstraints() {
+        AndroidView(
+            modifier = Modifier
+                .fillMaxWidth()
+                .defaultMinSize(minHeight = 70.dp)
+                .align(Alignment.Center)
+                .onVisibilityChanges { visible ->
+                    if (visible && !playerData.exoPlayer.isPlaying) {
+                        playerData.exoPlayer.play()
+                    } else if (!visible && playerData.exoPlayer.isPlaying) {
+                        playerData.exoPlayer.pause()
+                    }
+                },
+            factory = {
+                StyledPlayerView(context).apply {
+                    player = playerData.exoPlayer
+                    layoutParams = FrameLayout.LayoutParams(
+                        ViewGroup.LayoutParams.MATCH_PARENT,
+                        ViewGroup.LayoutParams.WRAP_CONTENT
+                    )
+                    controllerAutoShow = false
+                    thumbData?.thumb?.let { defaultArtwork = it }
+                    hideController()
+                    resizeMode =
+                        if (maxHeight.isFinite) AspectRatioFrameLayout.RESIZE_MODE_FIT else AspectRatioFrameLayout.RESIZE_MODE_FIXED_WIDTH
+                    onDialog?.let { innerOnDialog ->
+                        setFullscreenButtonClickListener {
+                            playerData.exoPlayer.pause()
+                            innerOnDialog(it)
+                        }
+                    }
+                }
+            }
+        )
+
+        MuteButton() { mute: Boolean ->
+            DefaultMutedSetting.value = mute
+
+            playerData.exoPlayer.volume = if (mute) 0f else 1f
+        }
+    }
+}
+
 fun Modifier.onVisibilityChanges(onVisibilityChanges: (Boolean) -> Unit): Modifier = composed {
     val view = LocalView.current
     var isVisible: Boolean? by remember { mutableStateOf(null) }
 
-    LaunchedEffect(isVisible) {
-        onVisibilityChanges(isVisible == true)
-    }
-
     onGloballyPositioned { coordinates ->
         val newIsVisible = coordinates.isCompletelyVisible(view)
         if (isVisible != newIsVisible) {
             isVisible = newIsVisible
+            onVisibilityChanges(isVisible == true)
         }
     }
 }
@@ -241,12 +241,14 @@ fun LayoutCoordinates.isCompletelyVisible(view: View): Boolean {
 }
 
 @Composable
-private fun MuteButton(muted: MutableState<Boolean>, modifier: Modifier, toggle: () -> Unit) {
+private fun MuteButton(toggle: (Boolean) -> Unit) {
     Box(
-        modifier
-            .width(70.dp)
-            .height(70.dp)
-            .padding(10.dp)
+        remember {
+            Modifier
+                .width(70.dp)
+                .height(70.dp)
+                .padding(10.dp)
+        }
     ) {
         Box(
             Modifier
@@ -256,23 +258,23 @@ private fun MuteButton(muted: MutableState<Boolean>, modifier: Modifier, toggle:
                 .background(MaterialTheme.colors.background)
         )
 
-        if (muted.value) {
-            IconButton(
-                onClick = toggle,
-                modifier = Modifier.size(50.dp)
-            ) {
+        val mutedInstance = remember { mutableStateOf(DefaultMutedSetting.value) }
+
+        IconButton(
+            onClick = {
+                mutedInstance.value = !mutedInstance.value
+                toggle(mutedInstance.value)
+            },
+            modifier = Modifier.size(50.dp)
+        ) {
+            if (mutedInstance.value) {
                 Icon(
                     imageVector = Icons.Default.VolumeOff,
                     "Hash Verified",
                     tint = MaterialTheme.colors.onBackground,
                     modifier = Modifier.size(30.dp)
                 )
-            }
-        } else {
-            IconButton(
-                onClick = toggle,
-                modifier = Modifier.size(50.dp)
-            ) {
+            } else {
                 Icon(
                     imageVector = Icons.Default.VolumeUp,
                     "Hash Verified",

app/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt

@@ -12,6 +12,8 @@ import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.aspectRatio
 import androidx.compose.foundation.layout.fillMaxSize
@@ -36,6 +38,7 @@ import androidx.compose.material.Text
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Report
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -61,11 +64,10 @@ import androidx.compose.ui.unit.isFinite
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
+import androidx.core.net.toUri
 import coil.annotation.ExperimentalCoilApi
 import coil.compose.AsyncImage
-import coil.compose.AsyncImagePainter
 import coil.imageLoader
-import com.google.accompanist.flowlayout.FlowRow
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.toHexKey
 import com.vitorpamplona.amethyst.service.BlurHashRequester
@@ -74,6 +76,8 @@ import com.vitorpamplona.amethyst.ui.actions.LoadingAnimation
 import com.vitorpamplona.amethyst.ui.actions.SaveToGallery
 import com.vitorpamplona.amethyst.ui.note.BlankNote
 import com.vitorpamplona.amethyst.ui.theme.Nip05
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
@@ -82,11 +86,13 @@ import net.engawapg.lib.zoomable.zoomable
 import java.io.File
 import java.security.MessageDigest
 
+@Immutable
 abstract class ZoomableContent(
     val description: String? = null,
     val dim: String? = null
 )
 
+@Immutable
 abstract class ZoomableUrlContent(
     val url: String,
     description: String? = null,
@@ -95,6 +101,7 @@ abstract class ZoomableUrlContent(
     val uri: String? = null
 ) : ZoomableContent(description, dim)
 
+@Immutable
 class ZoomableUrlImage(
     url: String,
     description: String? = null,
@@ -104,6 +111,7 @@ class ZoomableUrlImage(
     uri: String? = null
 ) : ZoomableUrlContent(url, description, hash, dim, uri)
 
+@Immutable
 class ZoomableUrlVideo(
     url: String,
     description: String? = null,
@@ -112,6 +120,7 @@ class ZoomableUrlVideo(
     uri: String? = null
 ) : ZoomableUrlContent(url, description, hash, dim, uri)
 
+@Immutable
 abstract class ZoomablePreloadedContent(
     val localFile: File?,
     description: String? = null,
@@ -121,6 +130,7 @@ abstract class ZoomablePreloadedContent(
     val uri: String
 ) : ZoomableContent(description, dim)
 
+@Immutable
 class ZoomableLocalImage(
     localFile: File?,
     mimeType: String? = null,
@@ -131,6 +141,7 @@ class ZoomableLocalImage(
     uri: String
 ) : ZoomablePreloadedContent(localFile, description, mimeType, isVerified, dim, uri)
 
+@Immutable
 class ZoomableLocalVideo(
     localFile: File?,
     mimeType: String? = null,
@@ -156,7 +167,7 @@ fun figureOutMimeType(fullUrl: String): ZoomableContent {
 
 @Composable
 @OptIn(ExperimentalFoundationApi::class)
-fun ZoomableContentView(content: ZoomableContent, images: List<ZoomableContent> = listOf(content)) {
+fun ZoomableContentView(content: ZoomableContent, images: ImmutableList<ZoomableContent> = listOf(content).toImmutableList()) {
     val clipboardManager = LocalClipboardManager.current
 
     // store the dialog open or close state
@@ -193,7 +204,10 @@ fun ZoomableContentView(content: ZoomableContent, images: List<ZoomableContent>
         is ZoomableUrlImage -> UrlImageView(content, mainImageModifier)
         is ZoomableUrlVideo -> VideoView(content.url, content.description) { dialogOpen = true }
         is ZoomableLocalImage -> LocalImageView(content, mainImageModifier)
-        is ZoomableLocalVideo -> VideoView(content.localFile, content.description) { dialogOpen = true }
+        is ZoomableLocalVideo ->
+            content.localFile?.let {
+                VideoView(it.toUri().toString(), content.description) { dialogOpen = true }
+            }
     }
 
     if (dialogOpen) {
@@ -201,17 +215,18 @@ fun ZoomableContentView(content: ZoomableContent, images: List<ZoomableContent>
     }
 }
 
+@OptIn(ExperimentalLayoutApi::class)
 @Composable
 private fun LocalImageView(
     content: ZoomableLocalImage,
     mainImageModifier: Modifier
 ) {
-    // store the dialog open or close state
-    var imageState by remember {
-        mutableStateOf<AsyncImagePainter.State?>(null)
-    }
-
     BoxWithConstraints(contentAlignment = Alignment.Center) {
+        // store the dialog open or close state
+        var imageLoadingState by remember {
+            mutableStateOf<Boolean?>(null)
+        }
+
         val myModifier = remember {
             mainImageModifier
                 .widthIn(max = maxWidth)
@@ -233,17 +248,25 @@ private fun LocalImageView(
                 contentDescription = content.description,
                 contentScale = contentScale,
                 modifier = myModifier,
-                onLoading = {
-                    imageState = it
+                onError = {
+                    if (imageLoadingState != false) {
+                        imageLoadingState = false
+                    }
                 },
                 onSuccess = {
-                    imageState = it
+                    if (imageLoadingState != true) {
+                        imageLoadingState = true
+                    }
                 }
             )
         }
 
-        if (imageState is AsyncImagePainter.State.Success) {
-            HashVerificationSymbol(content.isVerified, Modifier.align(Alignment.TopEnd))
+        if (imageLoadingState == true) {
+            if (content.isVerified != null) {
+                HashVerificationSymbol(content.isVerified, Modifier.align(Alignment.TopEnd))
+            }
+        } else if (imageLoadingState == false || content.localFile == null || !content.localFile.exists()) {
+            BlankNote()
         } else {
             if (content.blurhash != null) {
                 DisplayBlurHash(content.blurhash, content.description, contentScale, myModifier)
@@ -253,39 +276,29 @@ private fun LocalImageView(
                 }
             }
         }
-
-        if (imageState is AsyncImagePainter.State.Error || content.localFile == null || !content.localFile.exists()) {
-            BlankNote()
-        }
     }
 }
 
+@OptIn(ExperimentalLayoutApi::class)
 @Composable
 private fun UrlImageView(
     content: ZoomableUrlImage,
     mainImageModifier: Modifier
 ) {
     val scope = rememberCoroutineScope()
-    val context = LocalContext.current
-
-    // store the dialog open or close state
-    var imageState by remember {
-        mutableStateOf<AsyncImagePainter.State?>(null)
-    }
-
-    var verifiedHash by remember {
-        mutableStateOf<Boolean?>(null)
-    }
-
-    LaunchedEffect(key1 = content.url, key2 = imageState) {
-        if (imageState is AsyncImagePainter.State.Success) {
-            scope.launch(Dispatchers.IO) {
-                verifiedHash = verifyHash(content, context)
-            }
-        }
-    }
 
     BoxWithConstraints(contentAlignment = Alignment.Center) {
+        val context = LocalContext.current
+
+        // store the dialog open or close state
+        var imageLoadingStatus by remember {
+            mutableStateOf<Boolean?>(null)
+        }
+
+        var verifiedHash by remember {
+            mutableStateOf<Boolean?>(null)
+        }
+
         val myModifier = remember {
             mainImageModifier
                 .widthIn(max = maxWidth)
@@ -306,16 +319,29 @@ private fun UrlImageView(
             contentDescription = content.description,
             contentScale = contentScale,
             modifier = myModifier,
-            onLoading = {
-                imageState = it
+            onError = {
+                if (imageLoadingStatus != false) {
+                    imageLoadingStatus = false
+                }
             },
             onSuccess = {
-                imageState = it
+                if (verifiedHash == null) {
+                    scope.launch(Dispatchers.IO) {
+                        verifiedHash = verifyHash(content, context)
+                    }
+                }
+                if (imageLoadingStatus != true) {
+                    imageLoadingStatus = true
+                }
             }
         )
 
-        if (imageState is AsyncImagePainter.State.Success) {
-            HashVerificationSymbol(verifiedHash, Modifier.align(Alignment.TopEnd))
+        if (imageLoadingStatus == true) {
+            verifiedHash?.let {
+                HashVerificationSymbol(it, Modifier.align(Alignment.TopEnd))
+            }
+        } else if (imageLoadingStatus == false) {
+            ClickableUrl(urlText = "${content.url} ", url = content.url)
         } else {
             if (content.blurhash != null) {
                 DisplayBlurHash(content.blurhash, content.description, contentScale, myModifier)
@@ -325,10 +351,6 @@ private fun UrlImageView(
                 }
             }
         }
-
-        if (imageState is AsyncImagePainter.State.Error) {
-            ClickableUrl(urlText = "${content.url} ", url = content.url)
-        }
     }
 }
 
@@ -412,10 +434,12 @@ private fun DisplayBlurHash(
 
     val context = LocalContext.current
     AsyncImage(
-        model = BlurHashRequester.imageRequest(
-            context,
-            blurhash
-        ),
+        model = remember {
+            BlurHashRequester.imageRequest(
+                context,
+                blurhash
+            )
+        },
         contentDescription = description,
         contentScale = contentScale,
         modifier = modifier
@@ -424,7 +448,7 @@ private fun DisplayBlurHash(
 
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
-fun ZoomableImageDialog(imageUrl: ZoomableContent, allImages: List<ZoomableContent> = listOf(imageUrl), onDismiss: () -> Unit) {
+fun ZoomableImageDialog(imageUrl: ZoomableContent, allImages: ImmutableList<ZoomableContent> = listOf(imageUrl).toImmutableList(), onDismiss: () -> Unit) {
     Dialog(
         onDismissRequest = onDismiss,
         properties = DialogProperties(usePlatformDefaultWidth = false)
@@ -489,7 +513,9 @@ fun RenderImageOrVideo(content: ZoomableContent) {
         LocalImageView(content = content, mainImageModifier = mainModifier)
     } else if (content is ZoomableLocalVideo) {
         Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxSize(1f)) {
-            VideoView(content.localFile, content.description)
+            content.localFile?.let {
+                VideoView(it.toUri().toString(), content.description)
+            }
         }
     }
 }
@@ -514,9 +540,7 @@ private fun verifyHash(content: ZoomableUrlContent, context: Context): Boolean?
 }
 
 @Composable
-private fun HashVerificationSymbol(verifiedHash: Boolean?, modifier: Modifier) {
-    if (verifiedHash == null) return
-
+private fun HashVerificationSymbol(verifiedHash: Boolean, modifier: Modifier) {
     val localContext = LocalContext.current
     val scope = rememberCoroutineScope()
 

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChannelFeedFilter.kt

@@ -1,23 +1,12 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Channel
 import com.vitorpamplona.amethyst.model.Note
 
-object ChannelFeedFilter : AdditiveFeedFilter<Note>() {
-    lateinit var account: Account
-    var channelId: String? = null
-
-    fun loadMessagesBetween(accountLoggedIn: Account, channelId: String?) {
-        this.account = accountLoggedIn
-        this.channelId = channelId
-    }
-
+class ChannelFeedFilter(val channel: Channel, val account: Account) : AdditiveFeedFilter<Note>() {
     // returns the last Note of each user.
     override fun feed(): List<Note> {
-        val processingChannel = channelId ?: return emptyList()
-        val channel = LocalCache.getOrCreateChannel(processingChannel)
-
         return channel.notes
             .values
             .filter { account.isAcceptable(it) }
@@ -26,9 +15,6 @@ object ChannelFeedFilter : AdditiveFeedFilter<Note>() {
     }
 
     override fun applyFilter(collection: Set<Note>): Set<Note> {
-        val processingChannel = channelId ?: return emptySet()
-        val channel = LocalCache.getOrCreateChannel(processingChannel)
-
         return collection
             .filter { it.idHex in channel.notes.keys && account.isAcceptable(it) }
             .toSet()

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomFeedFilter.kt

@@ -1,51 +1,29 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
-import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
 
-object ChatroomFeedFilter : AdditiveFeedFilter<Note>() {
-    var account: Account? = null
-    var withUser: String? = null
-
-    fun loadMessagesBetween(accountIn: Account, userId: String) {
-        account = accountIn
-        withUser = userId
-    }
-
+class ChatroomFeedFilter(val withUser: User, val account: Account) : AdditiveFeedFilter<Note>() {
     // returns the last Note of each user.
     override fun feed(): List<Note> {
-        val processingUser = withUser ?: return emptyList()
-
-        val myAccount = account
-        val myUser = LocalCache.checkGetOrCreateUser(processingUser)
-
-        if (myAccount == null || myUser == null) return emptyList()
-
-        val messages = myAccount
+        val messages = account
             .userProfile()
-            .privateChatrooms[myUser] ?: return emptyList()
+            .privateChatrooms[withUser] ?: return emptyList()
 
         return messages.roomMessages
-            .filter { myAccount.isAcceptable(it) }
+            .filter { account.isAcceptable(it) }
             .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
             .reversed()
     }
 
     override fun applyFilter(collection: Set<Note>): Set<Note> {
-        val processingUser = withUser ?: return emptySet()
-
-        val myAccount = account
-        val myUser = LocalCache.checkGetOrCreateUser(processingUser)
-
-        if (myAccount == null || myUser == null) return emptySet()
-
-        val messages = myAccount
+        val messages = account
             .userProfile()
-            .privateChatrooms[myUser] ?: return emptySet()
+            .privateChatrooms[withUser] ?: return emptySet()
 
         return collection
-            .filter { it in messages.roomMessages && account?.isAcceptable(it) == true }
+            .filter { it in messages.roomMessages && account.isAcceptable(it) == true }
             .toSet()
     }
 

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomListKnownFeedFilter.kt

@@ -1,10 +1,15 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
+import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
+import com.vitorpamplona.amethyst.ui.actions.updated
+import kotlin.time.ExperimentalTime
+import kotlin.time.measureTimedValue
 
-object ChatroomListKnownFeedFilter : FeedFilter<Note>() {
-    lateinit var account: Account
+class ChatroomListKnownFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
 
     // returns the last Note of each user.
     override fun feed(): List<Note> {
@@ -35,4 +40,113 @@ object ChatroomListKnownFeedFilter : FeedFilter<Note>() {
             .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
             .reversed()
     }
+
+    @OptIn(ExperimentalTime::class)
+    override fun updateListWith(oldList: List<Note>, newItems: Set<Note>): List<Note> {
+        val (feed, elapsed) = measureTimedValue {
+            val me = account.userProfile()
+
+            // Gets the latest message by channel from the new items.
+            val newRelevantPublicMessages = filterRelevantPublicMessages(newItems, account)
+
+            // Gets the latest message by room from the new items.
+            val newRelevantPrivateMessages = filterRelevantPrivateMessages(newItems, account)
+
+            if (newRelevantPrivateMessages.isEmpty() && newRelevantPublicMessages.isEmpty()) {
+                return oldList
+            }
+
+            var myNewList = oldList
+
+            newRelevantPublicMessages.forEach { newNotePair ->
+                oldList.forEach { oldNote ->
+                    if (
+                        (newNotePair.key == oldNote.channelHex()) && (newNotePair.value.createdAt() ?: 0) > (oldNote.createdAt() ?: 0)
+                    ) {
+                        myNewList = myNewList.updated(oldNote, newNotePair.value)
+                    }
+                }
+            }
+
+            newRelevantPrivateMessages.forEach { newNotePair ->
+                oldList.forEach { oldNote ->
+                    val oldRoom = (oldNote.event as? PrivateDmEvent)?.talkingWith(me.pubkeyHex)
+
+                    if (
+                        (newNotePair.key == oldRoom) && (newNotePair.value.createdAt() ?: 0) > (oldNote.createdAt() ?: 0)
+                    ) {
+                        myNewList = myNewList.updated(oldNote, newNotePair.value)
+                    }
+                }
+            }
+
+            sort(myNewList.toSet()).take(1000)
+        }
+
+        // Log.d("Time", "${this.javaClass.simpleName} Modified Additive Feed in $elapsed with ${feed.size} objects")
+        return feed
+    }
+
+    override fun applyFilter(newItems: Set<Note>): Set<Note> {
+        // Gets the latest message by channel from the new items.
+        val newRelevantPublicMessages = filterRelevantPublicMessages(newItems, account)
+
+        // Gets the latest message by room from the new items.
+        val newRelevantPrivateMessages = filterRelevantPrivateMessages(newItems, account)
+
+        return if (newRelevantPrivateMessages.isEmpty() && newRelevantPublicMessages.isEmpty()) {
+            emptySet()
+        } else {
+            (newRelevantPrivateMessages.values + newRelevantPublicMessages.values).toSet()
+        }
+    }
+
+    private fun filterRelevantPublicMessages(newItems: Set<Note>, account: Account): MutableMap<String, Note> {
+        val followingChannels = account.followingChannels
+        val newRelevantPublicMessages = mutableMapOf<String, Note>()
+        newItems.filter { it.event is ChannelMessageEvent }.forEach { newNote ->
+            newNote.channelHex()?.let { channelHex ->
+                if (channelHex in followingChannels && account.isAcceptable(newNote)) {
+                    val lastNote = newRelevantPublicMessages.get(channelHex)
+                    if (lastNote != null) {
+                        if ((newNote.createdAt() ?: 0) > (lastNote.createdAt() ?: 0)) {
+                            newRelevantPublicMessages.put(channelHex, newNote)
+                        }
+                    } else {
+                        newRelevantPublicMessages.put(channelHex, newNote)
+                    }
+                }
+            }
+        }
+        return newRelevantPublicMessages
+    }
+
+    private fun filterRelevantPrivateMessages(newItems: Set<Note>, account: Account): MutableMap<String, Note> {
+        val me = account.userProfile()
+        val followingKeySet = account.followingKeySet()
+
+        val newRelevantPrivateMessages = mutableMapOf<String, Note>()
+        newItems.filter { it.event is PrivateDmEvent }.forEach { newNote ->
+            val roomUserHex = (newNote.event as? PrivateDmEvent)?.talkingWith(me.pubkeyHex)
+            val roomUser = roomUserHex?.let { LocalCache.users[it] }
+
+            if (roomUserHex != null && (newNote.author?.pubkeyHex == me.pubkeyHex || roomUserHex in followingKeySet || me.hasSentMessagesTo(roomUser)) && !account.isHidden(roomUserHex)) {
+                val lastNote = newRelevantPrivateMessages.get(roomUserHex)
+                if (lastNote != null) {
+                    if ((newNote.createdAt() ?: 0) > (lastNote.createdAt() ?: 0)) {
+                        newRelevantPrivateMessages.put(roomUserHex, newNote)
+                    }
+                } else {
+                    newRelevantPrivateMessages.put(roomUserHex, newNote)
+                }
+            }
+        }
+        return newRelevantPrivateMessages
+    }
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection
+            .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
+            .reversed()
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ChatroomListNewFeedFilter.kt

@@ -1,15 +1,19 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
+import com.vitorpamplona.amethyst.ui.actions.updated
+import kotlin.time.ExperimentalTime
+import kotlin.time.measureTimedValue
 
-object ChatroomListNewFeedFilter : FeedFilter<Note>() {
-    lateinit var account: Account
+class ChatroomListNewFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
 
     // returns the last Note of each user.
     override fun feed(): List<Note> {
         val me = account.userProfile()
-        val followingKeySet = ChatroomListKnownFeedFilter.account.followingKeySet()
+        val followingKeySet = account.followingKeySet()
 
         val privateChatrooms = account.userProfile().privateChatrooms
         val messagingWith = privateChatrooms.keys.filter {
@@ -27,4 +31,80 @@ object ChatroomListNewFeedFilter : FeedFilter<Note>() {
             .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
             .reversed()
     }
+
+    @OptIn(ExperimentalTime::class)
+    override fun updateListWith(oldList: List<Note>, newItems: Set<Note>): List<Note> {
+        val (feed, elapsed) = measureTimedValue {
+            val me = account.userProfile()
+
+            // Gets the latest message by room from the new items.
+            val newRelevantPrivateMessages = filterRelevantPrivateMessages(newItems, account)
+
+            if (newRelevantPrivateMessages.isEmpty()) {
+                return oldList
+            }
+
+            var myNewList = oldList
+
+            newRelevantPrivateMessages.forEach { newNotePair ->
+                oldList.forEach { oldNote ->
+                    val oldRoom = (oldNote.event as? PrivateDmEvent)?.talkingWith(me.pubkeyHex)
+
+                    if (
+                        (newNotePair.key == oldRoom) && (newNotePair.value.createdAt() ?: 0) > (oldNote.createdAt() ?: 0)
+                    ) {
+                        myNewList = myNewList.updated(oldNote, newNotePair.value)
+                    }
+                }
+            }
+
+            sort(myNewList.toSet()).take(1000)
+        }
+
+        // Log.d("Time", "${this.javaClass.simpleName} Modified Additive Feed in $elapsed with ${feed.size} objects")
+        return feed
+    }
+
+    override fun applyFilter(newItems: Set<Note>): Set<Note> {
+        // Gets the latest message by room from the new items.
+        val newRelevantPrivateMessages = filterRelevantPrivateMessages(newItems, account)
+
+        return if (newRelevantPrivateMessages.isEmpty()) {
+            emptySet()
+        } else {
+            newRelevantPrivateMessages.values.toSet()
+        }
+    }
+
+    private fun filterRelevantPrivateMessages(newItems: Set<Note>, account: Account): MutableMap<String, Note> {
+        val me = account.userProfile()
+        val followingKeySet = account.followingKeySet()
+
+        val newRelevantPrivateMessages = mutableMapOf<String, Note>()
+        newItems.filter { it.event is PrivateDmEvent }.forEach { newNote ->
+            val roomUserHex = (newNote.event as? PrivateDmEvent)?.talkingWith(me.pubkeyHex)
+            val roomUser = roomUserHex?.let { LocalCache.users[it] }
+
+            if (roomUserHex != null &&
+                (newNote.author?.pubkeyHex != me.pubkeyHex && roomUserHex !in followingKeySet && !me.hasSentMessagesTo(roomUser)) &&
+                !account.isHidden(roomUserHex)
+            ) {
+                val lastNote = newRelevantPrivateMessages.get(roomUserHex)
+                if (lastNote != null) {
+                    if ((newNote.createdAt() ?: 0) > (lastNote.createdAt() ?: 0)) {
+                        newRelevantPrivateMessages.put(roomUserHex, newNote)
+                    }
+                } else {
+                    newRelevantPrivateMessages.put(roomUserHex, newNote)
+                }
+            }
+        }
+        return newRelevantPrivateMessages
+    }
+
+    override fun sort(collection: Set<Note>): List<Note> {
+        return collection
+            .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
+            .reversed()
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/FeedFilter.kt

@@ -1,17 +1,20 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import android.util.Log
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import kotlin.time.ExperimentalTime
 import kotlin.time.measureTimedValue
 
 abstract class FeedFilter<T> {
     @OptIn(ExperimentalTime::class)
     fun loadTop(): List<T> {
+        checkNotInMainThread()
+
         val (feed, elapsed) = measureTimedValue {
             feed()
         }
 
-        Log.d("Time", "${this.javaClass.simpleName} Feed in $elapsed with ${feed.size} objects")
+        Log.d("Time", "${this.javaClass.simpleName} Full Feed in $elapsed with ${feed.size} objects")
         return feed.take(1000)
     }
 
@@ -23,7 +26,9 @@ abstract class AdditiveFeedFilter<T> : FeedFilter<T>() {
     abstract fun sort(collection: Set<T>): List<T>
 
     @OptIn(ExperimentalTime::class)
-    fun updateListWith(oldList: List<T>, newItems: Set<T>): List<T> {
+    open fun updateListWith(oldList: List<T>, newItems: Set<T>): List<T> {
+        checkNotInMainThread()
+
         val (feed, elapsed) = measureTimedValue {
             val newItemsToBeAdded = applyFilter(newItems)
             if (newItemsToBeAdded.isNotEmpty()) {
@@ -34,7 +39,7 @@ abstract class AdditiveFeedFilter<T> : FeedFilter<T>() {
             }
         }
 
-        Log.d("Time", "${this.javaClass.simpleName} Feed in $elapsed with ${feed.size} objects")
+        // Log.d("Time", "${this.javaClass.simpleName} Additive Feed in $elapsed with ${feed.size} objects")
         return feed
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/GlobalFeedFilter.kt

@@ -5,8 +5,7 @@ import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.*
 
-object GlobalFeedFilter : AdditiveFeedFilter<Note>() {
-    lateinit var account: Account
+class GlobalFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
 
     override fun feed(): List<Note> {
         val notes = innerApplyFilter(LocalCache.notes.values)

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HiddenAccountsFeedFilter.kt

@@ -1,10 +1,13 @@
 package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
 
-object HiddenAccountsFeedFilter : FeedFilter<User>() {
-    lateinit var account: Account
+class HiddenAccountsFeedFilter(val account: Account) : FeedFilter<User>() {
 
-    override fun feed() = account.hiddenUsers()
+    override fun feed(): List<User> {
+        return (account.hiddenUsers + account.transientHiddenUsers)
+            .map { LocalCache.getOrCreateUser(it) }
+    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeConversationsFeedFilter.kt

@@ -6,9 +6,7 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 
-object HomeConversationsFeedFilter : AdditiveFeedFilter<Note>() {
-    lateinit var account: Account
-
+class HomeConversationsFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
     override fun feed(): List<Note> {
         return sort(innerApplyFilter(LocalCache.notes.values))
     }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/HomeNewThreadFeedFilter.kt

@@ -10,9 +10,7 @@ import com.vitorpamplona.amethyst.service.model.PollNoteEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
 
-object HomeNewThreadFeedFilter : AdditiveFeedFilter<Note>() {
-    lateinit var account: Account
-
+class HomeNewThreadFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
     override fun feed(): List<Note> {
         val notes = innerApplyFilter(LocalCache.notes.values)
         val longFormNotes = innerApplyFilter(LocalCache.addressables.values)

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/NotificationFeedFilter.kt

@@ -2,14 +2,12 @@ package com.vitorpamplona.amethyst.ui.dal
 
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.GLOBAL_FOLLOWS
+import com.vitorpamplona.amethyst.model.HexKey
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.model.*
 
-object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
-    lateinit var account: Account
-
+class NotificationFeedFilter(val account: Account) : AdditiveFeedFilter<Note>() {
     override fun feed(): List<Note> {
         return sort(innerApplyFilter(LocalCache.notes.values))
     }
@@ -36,7 +34,7 @@ object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
                 (isGlobal || it.author?.pubkeyHex in followingKeySet) &&
                 it.event?.isTaggedUser(loggedInUserHex) ?: false &&
                 (it.author == null || !account.isHidden(it.author!!.pubkeyHex)) &&
-                tagsAnEventByUser(it, loggedInUser)
+                tagsAnEventByUser(it, loggedInUserHex)
         }.toSet()
     }
 
@@ -44,27 +42,27 @@ object NotificationFeedFilter : AdditiveFeedFilter<Note>() {
         return collection.sortedWith(compareBy({ it.createdAt() }, { it.idHex })).reversed()
     }
 
-    fun tagsAnEventByUser(note: Note, author: User): Boolean {
+    fun tagsAnEventByUser(note: Note, authorHex: HexKey): Boolean {
         val event = note.event
 
         if (event is BaseTextNoteEvent) {
             val isAuthoredPostCited = event.findCitations().any {
-                LocalCache.notes[it]?.author === author || LocalCache.addressables[it]?.author === author
+                LocalCache.notes[it]?.author?.pubkeyHex == authorHex || LocalCache.addressables[it]?.author?.pubkeyHex == authorHex
             }
 
             return isAuthoredPostCited ||
                 (
-                    event.citedUsers().contains(author.pubkeyHex) ||
-                        note.replyTo?.any { it.author === author } == true
+                    event.citedUsers().contains(authorHex) ||
+                        note.replyTo?.any { it.author?.pubkeyHex == authorHex } == true
                     )
         }
 
         if (event is ReactionEvent) {
-            return note.replyTo?.lastOrNull()?.author === author
+            return note.replyTo?.lastOrNull()?.author?.pubkeyHex == authorHex
         }
 
         if (event is RepostEvent) {
-            return note.replyTo?.lastOrNull()?.author === author
+            return note.replyTo?.lastOrNull()?.author?.pubkeyHex == authorHex
         }
 
         return true

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/ThreadFeedFilter.kt

@@ -1,21 +1,18 @@
 package com.vitorpamplona.amethyst.ui.dal
 
+import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.ThreadAssembler
 
-object ThreadFeedFilter : FeedFilter<Note>() {
-    var noteId: String? = null
+@Immutable
+class ThreadFeedFilter(val noteId: String) : FeedFilter<Note>() {
 
     override fun feed(): List<Note> {
         val cachedSignatures: MutableMap<Note, String> = mutableMapOf()
-        val eventsToWatch = noteId?.let { ThreadAssembler().findThreadFor(it) } ?: emptySet()
+        val eventsToWatch = ThreadAssembler().findThreadFor(noteId) ?: emptySet()
         // Currently orders by date of each event, descending, at each level of the reply stack
         val order = compareByDescending<Note> { it.replyLevelSignature(cachedSignatures) }
 
         return eventsToWatch.sortedWith(order)
     }
-
-    fun loadThread(noteId: String?) {
-        this.noteId = noteId
-    }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/UserProfileAppRecommendationsFeedFilter.kt

@@ -0,0 +1,21 @@
+package com.vitorpamplona.amethyst.ui.dal
+
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.model.AppRecommendationEvent
+
+class UserProfileAppRecommendationsFeedFilter(val user: User) : FeedFilter<Note>() {
+    override fun feed(): List<Note> {
+        val recommendations = LocalCache.addressables.values.filter {
+            (it.event as? AppRecommendationEvent)?.pubKey == user.pubkeyHex
+        }.mapNotNull {
+            (it.event as? AppRecommendationEvent)?.recommendations()
+        }.flatten()
+            .mapNotNull {
+                LocalCache.getOrCreateAddressableNote(it)
+            }.toSet().toList()
+
+        return recommendations
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/UserProfileFollowersFeedFilter.kt

@@ -4,18 +4,9 @@ import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
 
-object UserProfileFollowersFeedFilter : FeedFilter<User>() {
-    lateinit var account: Account
-    var user: User? = null
-
-    fun loadUserProfile(accountLoggedIn: Account, user: User?) {
-        account = accountLoggedIn
-        this.user = user
-    }
+class UserProfileFollowersFeedFilter(val user: User, val account: Account) : FeedFilter<User>() {
 
     override fun feed(): List<User> {
-        return user?.let { myUser ->
-            LocalCache.users.values.filter { it.isFollowing(myUser) && account.isAcceptable(it) }
-        } ?: emptyList()
+        return LocalCache.users.values.filter { it.isFollowing(user) && !account.isHidden(it) }
     }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/dal/UserProfileFollowsFeedFilter.kt

@@ -3,21 +3,25 @@ package com.vitorpamplona.amethyst.ui.dal
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.model.ContactListEvent
 
-object UserProfileFollowsFeedFilter : FeedFilter<User>() {
-    lateinit var account: Account
-    var user: User? = null
+class UserProfileFollowsFeedFilter(val user: User, val account: Account) : FeedFilter<User>() {
 
-    fun loadUserProfile(accountLoggedIn: Account, user: User?) {
-        account = accountLoggedIn
-        this.user = user
-    }
+    val cache: MutableMap<ContactListEvent, List<User>> = mutableMapOf()
 
     override fun feed(): List<User> {
-        return user?.latestContactList?.unverifiedFollowKeySet()?.mapNotNull {
-            LocalCache.checkGetOrCreateUser(it)
-        }?.toSet()
-            ?.filter { account.isAcceptable(it) }
+        val contactList = user.latestContactList ?: return emptyList()
+
+        val previousList = cache[contactList]
+        if (previousList != null) return previousList
+
+        cache[contactList] = user.latestContactList
+            ?.unverifiedFollowKeySet()?.mapNotNull {
+                LocalCache.checkGetOrCreateUser(it)
+            }?.toSet()
+            ?.filter { !account.isHidden(it) }
             ?.reversed() ?: emptyList()
+
+        return cache[contactList] ?: emptyList()
     }
 }