v0.66.7

- Support for Personal Emoji Lists
- Support for Custom emoji Reactions

README.md

@@ -4,6 +4,11 @@
 
 Amethyst brings the best social network to your Android phone. Just insert your Nostr private key and start posting. 
 
+[<img src="./docs/design/obtainium.png"
+alt="Get it on Obtaininum"
+height="80">](https://github.com/ImranR98/Obtainium)
+[<img src="https://github.com/machiav3lli/oandbackupx/raw/034b226cea5c1b30eb4f6a6f313e4dadcbb0ece4/badge_github.png" alt="Get it on GitHub"
+height="80">](https://github.com/vitorpamplona/amethyst/releases)
 [<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
      alt="Get it on F-Droid"
      height="80">](https://f-droid.org/packages/com.vitorpamplona.amethyst/)
@@ -11,8 +16,6 @@ Amethyst brings the best social network to your Android phone. Just insert your
      alt="Get it on Google Play"
      height="80">](https://play.google.com/store/apps/details?id=com.vitorpamplona.amethyst)
 
-Or get the latest APK from the [Releases Section](https://github.com/vitorpamplona/amethyst/releases/latest).
-
 # Current Features
 
 - [x] Event Builders / WebSocket Subscriptions (NIP-01)
@@ -68,10 +71,11 @@ Or get the latest APK from the [Releases Section](https://github.com/vitorpamplo
 - [x] Recommended Application Handlers (NIP-89)
 - [x] Events with a Subject (NIP-14)
 - [x] Generic Reposts (kind:16)
-- [x] Live Activities & Live Chats (NIP-102)
+- [x] Live Activities & Live Chats (NIP-53)
 - [x] Relay Pages (NIP-11)
 - [x] HTTP Auth (NIP-98)
 - [x] Zapraiser (NIP-TBD)
+- [x] Moderated Communities (NIP-172)
 - [ ] Marketplace (NIP-15)
 - [ ] Image/Video Capture in the app
 - [ ] Local Database
@@ -191,6 +195,12 @@ Information that you share is publicly visible to anyone reading from relays tha
 ## Information Permanence ##
 Information shared on nostr should be assumed permanent for privacy purposes. There is no way to guarantee deleting or editing any content once posted. 
 
+# Screenshots
+
+| Home Feed                                 | Messages                                     | Live Streams                                    | Notifications                                          |
+|-------------------------------------------|----------------------------------------------|-------------------------------------------------|--------------------------------------------------------|
+| ![Home Feed](./docs/screenshots/home.png) | ![Messages](./docs/screenshots/messages.png) | ![Live Streams](./docs/screenshots/replies.png) | ![Notifications](./docs/screenshots/notifications.png) |
+
 # Contributing
 
 [Issues](https://github.com/vitorpamplona/amethyst/issues) and [pull requests](https://github.com/vitorpamplona/amethyst/pulls) are very welcome.

app/build.gradle

@@ -13,8 +13,8 @@ android {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
         targetSdk 33
-        versionCode 223
-        versionName "0.62.2"
+        versionCode 246
+        versionName "0.67.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
@@ -116,7 +116,7 @@ dependencies {
     implementation "androidx.biometric:biometric-ktx:1.2.0-alpha05"
 
     // Bitcoin secp256k1 bindings to Android
-    implementation 'fr.acinq.secp256k1:secp256k1-kmp-jni-android:0.10.0'
+    implementation 'fr.acinq.secp256k1:secp256k1-kmp-jni-android:0.10.1'
 
     // Nostr Base Protocol
     implementation('com.github.vitorpamplona.NostrPostr:nostrpostrlib:master-SNAPSHOT') {
@@ -134,15 +134,14 @@ dependencies {
 
     // link preview
     implementation 'org.jsoup:jsoup:1.16.1'
-    //implementation 'tw.com.oneup.www:Baha-UrlPreview:1.0.1'
 
     // Encrypted Key Storage
     implementation 'androidx.security:security-crypto-ktx:1.1.0-alpha06'
 
     // view videos
-    implementation 'com.google.android.exoplayer:exoplayer:2.18.7'
+    implementation "com.google.android.exoplayer:exoplayer:${exoplayer_version}"
     // important for proxy / tor
-    implementation 'com.google.android.exoplayer:extension-okhttp:2.18.7'
+    implementation "com.google.android.exoplayer:extension-okhttp:${exoplayer_version}"
 
     // Load images from the web.
     implementation "io.coil-kt:coil-compose:$coil_version"
@@ -170,9 +169,9 @@ dependencies {
     //implementation "com.halilibo.compose-richtext:richtext-commonmark:0.16.0"
 
     // Markdown (With fix for full-image bleeds)
-    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui:main-SNAPSHOT')
-    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui-material:main-SNAPSHOT')
-    implementation('com.github.vitorpamplona.compose-richtext:richtext-commonmark:main-SNAPSHOT')
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui:a0954aba63')
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-ui-material:a0954aba63')
+    implementation('com.github.vitorpamplona.compose-richtext:richtext-commonmark:a0954aba63')
 
     // Local model for language identification
     playImplementation 'com.google.mlkit:language-id:17.0.4'
@@ -181,7 +180,7 @@ dependencies {
     playImplementation 'com.google.mlkit:translate:17.0.1'
 
     // PushNotifications
-    playImplementation platform('com.google.firebase:firebase-bom:32.1.0')
+    playImplementation platform('com.google.firebase:firebase-bom:32.1.1')
     playImplementation 'com.google.firebase:firebase-messaging-ktx'
 
     // Charts
@@ -199,7 +198,7 @@ dependencies {
     implementation 'id.zelory:compressor:3.0.1'
 
     // Automatic memory leak detection
-    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.11'
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.12'
 
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'io.mockk:mockk:1.13.5'

app/src/androidTestPlay/java/com/vitorpamplona/amethyst/TranslationsTest.kt

@@ -11,17 +11,17 @@ import org.junit.runner.RunWith
 @RunWith(AndroidJUnit4::class)
 class TranslationsTest {
 
-    fun translatePT(text: String, translateTo: String): String? {
+    fun translateTo(text: String, translateTo: String): String? {
         val task = LanguageTranslatorService.autoTranslate(text, emptySet(), translateTo)
         return Tasks.await(task).result
     }
 
     fun assertTranslate(expected: String, input: String, translateTo: String) {
-        assertEquals(null, expected, translatePT(input, translateTo))
+        assertEquals(null, expected, translateTo(input, translateTo))
     }
 
     fun assertTranslateContains(expected: String, input: String, translateTo: String) {
-        val translated = translatePT(input, translateTo)!!
+        val translated = translateTo(input, translateTo)!!
         assertTrue("'$translated' does not contain '$expected'", translated.contains(expected))
     }
 
@@ -86,4 +86,17 @@ class TranslationsTest {
             "en"
         )
     }
+
+    @Test
+    fun testJapaneseTranslationsOfUrl() {
+        assertTranslateContains(
+            "https://youtu.be/wMYFmCDy_Eg",
+            "うちの会社の小さい先輩の話 第1話「うちの会社の先輩は小さくて可愛い」\n" +
+                "\n" +
+                "https://youtu.be/wMYFmCDy_Eg\n" +
+                "\n" +
+                "先輩がうざい後輩の話と似たような話かと思ったけど、もっとオタクの妄想あるある的なものを詰め込んだやつだ。ワードとかシチュエーションとか、ヒロインのサイズ感とか。知らんけど",
+            "en"
+        )
+    }
 }

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

@@ -43,6 +43,7 @@ private object PrefKeys {
     const val NOSTR_PRIVKEY = "nostr_privkey"
     const val NOSTR_PUBKEY = "nostr_pubkey"
     const val FOLLOWING_CHANNELS = "following_channels"
+    const val FOLLOWING_COMMUNITIES = "following_communities"
     const val HIDDEN_USERS = "hidden_users"
     const val RELAYS = "relays"
     const val DONT_TRANSLATE_FROM = "dontTranslateFrom"
@@ -55,6 +56,7 @@ private object PrefKeys {
     const val DEFAULT_HOME_FOLLOW_LIST = "defaultHomeFollowList"
     const val DEFAULT_STORIES_FOLLOW_LIST = "defaultStoriesFollowList"
     const val DEFAULT_NOTIFICATION_FOLLOW_LIST = "defaultNotificationFollowList"
+    const val DEFAULT_DISCOVERY_FOLLOW_LIST = "defaultDiscoveryFollowList"
     const val ZAP_PAYMENT_REQUEST_SERVER = "zapPaymentServer"
     const val LATEST_CONTACT_LIST = "latestContactList"
     const val HIDE_DELETE_REQUEST_DIALOG = "hide_delete_request_dialog"
@@ -204,6 +206,7 @@ object LocalPreferences {
             account.loggedIn.privKey?.let { putString(PrefKeys.NOSTR_PRIVKEY, it.toHex()) }
             account.loggedIn.pubKey.let { putString(PrefKeys.NOSTR_PUBKEY, it.toHex()) }
             putStringSet(PrefKeys.FOLLOWING_CHANNELS, account.followingChannels)
+            putStringSet(PrefKeys.FOLLOWING_COMMUNITIES, account.followingCommunities)
             putStringSet(PrefKeys.HIDDEN_USERS, account.hiddenUsers)
             putString(PrefKeys.RELAYS, gson.toJson(account.localRelays))
             putStringSet(PrefKeys.DONT_TRANSLATE_FROM, account.dontTranslateFrom)
@@ -216,6 +219,7 @@ object LocalPreferences {
             putString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, account.defaultHomeFollowList)
             putString(PrefKeys.DEFAULT_STORIES_FOLLOW_LIST, account.defaultStoriesFollowList)
             putString(PrefKeys.DEFAULT_NOTIFICATION_FOLLOW_LIST, account.defaultNotificationFollowList)
+            putString(PrefKeys.DEFAULT_DISCOVERY_FOLLOW_LIST, account.defaultDiscoveryFollowList)
             putString(PrefKeys.ZAP_PAYMENT_REQUEST_SERVER, gson.toJson(account.zapPaymentRequest))
             putString(PrefKeys.LATEST_CONTACT_LIST, Event.gson.toJson(account.backupContactList))
             putBoolean(PrefKeys.HIDE_DELETE_REQUEST_DIALOG, account.hideDeleteRequestDialog)
@@ -245,6 +249,7 @@ object LocalPreferences {
             val pubKey = getString(PrefKeys.NOSTR_PUBKEY, null) ?: return null
             val privKey = getString(PrefKeys.NOSTR_PRIVKEY, null)
             val followingChannels = getStringSet(PrefKeys.FOLLOWING_CHANNELS, null) ?: setOf()
+            val followingCommunities = getStringSet(PrefKeys.FOLLOWING_COMMUNITIES, null) ?: setOf()
             val hiddenUsers = getStringSet(PrefKeys.HIDDEN_USERS, emptySet()) ?: setOf()
             val localRelays = gson.fromJson(
                 getString(PrefKeys.RELAYS, "[]"),
@@ -256,6 +261,7 @@ object LocalPreferences {
             val defaultHomeFollowList = getString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, null) ?: KIND3_FOLLOWS
             val defaultStoriesFollowList = getString(PrefKeys.DEFAULT_STORIES_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
             val defaultNotificationFollowList = getString(PrefKeys.DEFAULT_NOTIFICATION_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
+            val defaultDiscoveryFollowList = getString(PrefKeys.DEFAULT_DISCOVERY_FOLLOW_LIST, null) ?: GLOBAL_FOLLOWS
 
             val zapAmountChoices = gson.fromJson(
                 getString(PrefKeys.ZAP_AMOUNTS, "[]"),
@@ -337,6 +343,7 @@ object LocalPreferences {
             val a = Account(
                 loggedIn = Persona(privKey = privKey?.hexToByteArray(), pubKey = pubKey.hexToByteArray()),
                 followingChannels = followingChannels,
+                followingCommunities = followingCommunities,
                 hiddenUsers = hiddenUsers,
                 localRelays = localRelays,
                 dontTranslateFrom = dontTranslateFrom,
@@ -349,6 +356,7 @@ object LocalPreferences {
                 defaultHomeFollowList = defaultHomeFollowList,
                 defaultStoriesFollowList = defaultStoriesFollowList,
                 defaultNotificationFollowList = defaultNotificationFollowList,
+                defaultDiscoveryFollowList = defaultDiscoveryFollowList,
                 zapPaymentRequest = zapPaymentRequestServer,
                 hideDeleteRequestDialog = hideDeleteRequestDialog,
                 hideBlockAlertDialog = hideBlockAlertDialog,

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

@@ -13,9 +13,13 @@ import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.service.HttpClient
 import com.vitorpamplona.amethyst.service.NostrAccountDataSource
 import com.vitorpamplona.amethyst.service.NostrChannelDataSource
+import com.vitorpamplona.amethyst.service.NostrChatroomDataSource
 import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
-import com.vitorpamplona.amethyst.service.NostrGlobalDataSource
+import com.vitorpamplona.amethyst.service.NostrCommunityDataSource
+import com.vitorpamplona.amethyst.service.NostrDiscoveryDataSource
+import com.vitorpamplona.amethyst.service.NostrHashtagDataSource
 import com.vitorpamplona.amethyst.service.NostrHomeDataSource
+import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleChannelDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
@@ -67,12 +71,14 @@ object ServiceManager {
             NostrHomeDataSource.account = myAccount
             NostrChatroomListDataSource.account = myAccount
             NostrVideoDataSource.account = myAccount
+            NostrDiscoveryDataSource.account = myAccount
             ImageUploader.account = myAccount
 
             // Notification Elements
             NostrHomeDataSource.start()
             NostrAccountDataSource.start()
             NostrChatroomListDataSource.start()
+            NostrDiscoveryDataSource.start()
 
             // More Info Data Sources
             NostrSingleEventDataSource.start()
@@ -87,9 +93,13 @@ object ServiceManager {
         NostrAccountDataSource.stop()
         NostrHomeDataSource.stop()
         NostrChannelDataSource.stop()
+        NostrChatroomDataSource.stop()
         NostrChatroomListDataSource.stop()
+        NostrDiscoveryDataSource.stop()
 
-        NostrGlobalDataSource.stop()
+        NostrCommunityDataSource.stop()
+        NostrHashtagDataSource.stop()
+        NostrSearchEventOrUserDataSource.stop()
         NostrSingleChannelDataSource.stop()
         NostrSingleEventDataSource.stop()
         NostrSingleUserDataSource.stop()

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

@@ -50,6 +50,7 @@ val KIND3_FOLLOWS = " All Follows "
 class Account(
     val loggedIn: Persona,
     var followingChannels: Set<String> = DefaultChannels,
+    var followingCommunities: Set<String> = setOf(),
     var hiddenUsers: Set<String> = setOf(),
     var localRelays: Set<RelaySetupInfo> = Constants.defaultRelays.toSet(),
     var dontTranslateFrom: Set<String> = getLanguagesSpokenByUser(),
@@ -62,6 +63,7 @@ class Account(
     var defaultHomeFollowList: String = KIND3_FOLLOWS,
     var defaultStoriesFollowList: String = GLOBAL_FOLLOWS,
     var defaultNotificationFollowList: String = GLOBAL_FOLLOWS,
+    var defaultDiscoveryFollowList: String = GLOBAL_FOLLOWS,
     var zapPaymentRequest: Nip47URI? = null,
     var hideDeleteRequestDialog: Boolean = false,
     var hideBlockAlertDialog: Boolean = false,
@@ -106,6 +108,10 @@ class Account(
         return followingChannels.mapNotNull { LocalCache.checkGetOrCreateChannel(it) }
     }
 
+    fun followingCommunities(): List<AddressableNote> {
+        return followingCommunities.mapNotNull { LocalCache.checkGetOrCreateAddressableNote(it) }
+    }
+
     fun isWriteable(): Boolean {
         return loggedIn.privKey != null
     }
@@ -170,6 +176,19 @@ class Account(
             return
         }
 
+        if (reaction.startsWith(":")) {
+            val emojiUrl = EmojiUrl.decode(reaction)
+            if (emojiUrl != null) {
+                note.event?.let {
+                    val event = ReactionEvent.create(emojiUrl, it, loggedIn.privKey!!)
+                    Client.send(event)
+                    LocalCache.consume(event)
+                }
+
+                return
+            }
+        }
+
         note.event?.let {
             val event = ReactionEvent.create(reaction, it, loggedIn.privKey!!)
             Client.send(event)
@@ -468,6 +487,7 @@ class Account(
             dimensions = headerInfo.dim,
             blurhash = headerInfo.blurHash,
             description = headerInfo.description,
+            sensitiveContent = headerInfo.sensitiveContent,
             privateKey = loggedIn.privKey!!
         )
 
@@ -497,6 +517,7 @@ class Account(
             dimensions = headerInfo.dim,
             blurhash = headerInfo.blurHash,
             description = headerInfo.description,
+            sensitiveContent = headerInfo.sensitiveContent,
             privateKey = loggedIn.privKey!!
         )
 
@@ -666,6 +687,51 @@ class Account(
         joinChannel(event.id)
     }
 
+    fun removeEmojiPack(usersEmojiList: Note, emojiList: Note) {
+        if (!isWriteable()) return
+
+        val noteEvent = usersEmojiList.event
+        if (noteEvent !is EmojiPackSelectionEvent) return
+        val emojiListEvent = emojiList.event
+        if (emojiListEvent !is EmojiPackEvent) return
+
+        val event = EmojiPackSelectionEvent.create(
+            noteEvent.taggedAddresses().filter { it != emojiListEvent.address() },
+            loggedIn.privKey!!
+        )
+
+        Client.send(event)
+        LocalCache.consume(event)
+    }
+
+    fun addEmojiPack(usersEmojiList: Note, emojiList: Note) {
+        if (!isWriteable()) return
+        val emojiListEvent = emojiList.event
+        if (emojiListEvent !is EmojiPackEvent) return
+
+        val event = if (usersEmojiList.event == null) {
+            EmojiPackSelectionEvent.create(
+                listOf(emojiListEvent.address()),
+                loggedIn.privKey!!
+            )
+        } else {
+            val noteEvent = usersEmojiList.event
+            if (noteEvent !is EmojiPackSelectionEvent) return
+
+            if (noteEvent.taggedAddresses().any { it == emojiListEvent.address() }) {
+                return
+            }
+
+            EmojiPackSelectionEvent.create(
+                noteEvent.taggedAddresses().plus(emojiListEvent.address()),
+                loggedIn.privKey!!
+            )
+        }
+
+        Client.send(event)
+        LocalCache.consume(event)
+    }
+
     fun addPrivateBookmark(note: Note) {
         if (!isWriteable()) return
 
@@ -856,6 +922,20 @@ class Account(
         saveable.invalidateData()
     }
 
+    fun joinCommunity(idHex: String) {
+        followingCommunities = followingCommunities + idHex
+        live.invalidateData()
+
+        saveable.invalidateData()
+    }
+
+    fun leaveCommunity(idHex: String) {
+        followingCommunities = followingCommunities - idHex
+        live.invalidateData()
+
+        saveable.invalidateData()
+    }
+
     fun hideUser(pubkeyHex: String) {
         hiddenUsers = hiddenUsers + pubkeyHex
         live.invalidateData()
@@ -899,6 +979,12 @@ class Account(
         saveable.invalidateData()
     }
 
+    fun changeDefaultDiscoveryFollowList(name: String) {
+        defaultDiscoveryFollowList = name
+        live.invalidateData()
+        saveable.invalidateData()
+    }
+
     fun changeZapAmounts(newAmounts: List<Long>) {
         zapAmountChoices = newAmounts
         live.invalidateData()
@@ -1134,7 +1220,7 @@ class Account(
             user.countReportAuthorsBy(followingKeySet()) < 5
     }
 
-    fun isAcceptableDirect(note: Note): Boolean {
+    private fun isAcceptableDirect(note: Note): Boolean {
         if (!warnAboutPostsWithReports) {
             return note.reportsBy(userProfile()).isEmpty()
         }
@@ -1146,6 +1232,10 @@ class Account(
         return user.pubkeyHex in followingKeySet()
     }
 
+    fun isFollowing(user: HexKey): Boolean {
+        return user in followingKeySet()
+    }
+
     fun isAcceptable(note: Note): Boolean {
         return note.author?.let { isAcceptable(it) } ?: true && // if user hasn't hided this author
             isAcceptableDirect(note) &&

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

@@ -18,7 +18,6 @@ class AntiSpamFilter {
     val recentMessages = LruCache<Int, String>(1000)
     val spamMessages = LruCache<Int, Spammer>(1000)
 
-    @Synchronized
     fun isSpam(event: Event, relay: Relay?): Boolean {
         checkNotInMainThread()
 
@@ -45,15 +44,9 @@ class AntiSpamFilter {
             Log.w("Potential SPAM Message", "${event.id} ${recentMessages[hash]} ${spamMessages[hash] != null} ${relay?.url} ${event.content.replace("\n", " | ")}")
 
             // Log down offenders
-            if (spamMessages.get(hash) == null) {
-                spamMessages.put(hash, Spammer(event.pubKey, setOf(recentMessages[hash], event.id)))
-                liveSpam.invalidateData()
-            } else {
-                val spammer = spamMessages.get(hash)
-                spammer.duplicatedMessages = spammer.duplicatedMessages + event.id
+            logOffender(hash, event)
 
-                liveSpam.invalidateData()
-            }
+            liveSpam.invalidateData()
 
             return true
         }
@@ -63,6 +56,16 @@ class AntiSpamFilter {
         return false
     }
 
+    @Synchronized
+    private fun logOffender(hashCode: Int, event: Event) {
+        if (spamMessages.get(hashCode) == null) {
+            spamMessages.put(hashCode, Spammer(event.pubKey, setOf(recentMessages[hashCode], event.id)))
+        } else {
+            val spammer = spamMessages.get(hashCode)
+            spammer.duplicatedMessages = spammer.duplicatedMessages + event.id
+        }
+    }
+
     val liveSpam: AntiSpamLiveData = AntiSpamLiveData(this)
 }
 
@@ -73,7 +76,11 @@ class AntiSpamLiveData(val cache: AntiSpamFilter) : LiveData<AntiSpamState>(Anti
     private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
+        checkNotInMainThread()
+
         bundler.invalidate() {
+            checkNotInMainThread()
+
             if (hasActiveObservers()) {
                 postValue(AntiSpamState(cache))
             }

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

@@ -3,6 +3,7 @@ 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.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.ATag
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
 import com.vitorpamplona.amethyst.service.model.LiveActivitiesEvent
@@ -33,7 +34,7 @@ class PublicChatChannel(idHex: String) : Channel(idHex) {
     }
 
     override fun profilePicture(): String? {
-        if (info.picture.isNullOrBlank()) return null
+        if (info.picture.isNullOrBlank()) return super.profilePicture()
         return info.picture ?: super.profilePicture()
     }
 
@@ -65,7 +66,7 @@ class LiveActivitiesChannel(val address: ATag) : Channel(address.toTag()) {
     }
 
     override fun profilePicture(): String? {
-        return info?.image()?.ifBlank { null } ?: super.profilePicture()
+        return info?.image()?.ifBlank { null }
     }
 
     override fun anyNameStartsWith(prefix: String): Boolean {
@@ -145,7 +146,10 @@ class ChannelLiveData(val channel: Channel) : LiveData<ChannelState>(ChannelStat
     private val bundler = BundledUpdate(300, Dispatchers.IO)
 
     fun invalidateData() {
+        checkNotInMainThread()
+
         bundler.invalidate() {
+            checkNotInMainThread()
             if (hasActiveObservers()) {
                 postValue(ChannelState(channel))
             }

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

@@ -1,26 +1,31 @@
 package com.vitorpamplona.amethyst.model
 import androidx.compose.foundation.layout.padding
+import androidx.compose.runtime.Immutable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.R
-fun checkForHashtagWithIcon(tag: String): HashtagIcon? {
+fun checkForHashtagWithIcon(tag: String, primary: Color): HashtagIcon? {
     return when (tag.lowercase()) {
-        "bitcoin", "btc", "timechain" -> HashtagIcon(R.drawable.ht_btc, "Bitcoin", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
+        "bitcoin", "btc", "timechain", "bitcoiner", "bitcoiners" -> HashtagIcon(R.drawable.ht_btc, "Bitcoin", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
         "nostr", "nostrich", "nostriches" -> HashtagIcon(R.drawable.ht_nostr, "Nostr", Color.Unspecified, Modifier.padding(1.dp, 2.dp, 0.dp, 0.dp))
         "lightning", "lightningnetwork" -> HashtagIcon(R.drawable.ht_lightning, "Lightning", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
         "zap", "zaps", "zapper", "zappers", "zapping", "zapped", "zapathon", "zapraiser", "zaplife", "zapchain" -> HashtagIcon(R.drawable.zap, "Zap", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
         "amethyst" -> HashtagIcon(R.drawable.amethyst, "Amethyst", Color.Unspecified, Modifier.padding(3.dp, 2.dp, 0.dp, 0.dp))
         "onyx" -> HashtagIcon(R.drawable.black_heart, "Onyx", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
+        "cashu", "ecash", "nut", "nuts", "deeznuts" -> HashtagIcon(R.drawable.cashu, "Cashu", Color.Unspecified, Modifier.padding(1.dp, 3.dp, 0.dp, 0.dp))
         "plebs", "pleb", "plebchain" -> HashtagIcon(R.drawable.plebs, "Pleb", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 1.dp))
         "coffee", "coffeechain", "cafe" -> HashtagIcon(R.drawable.coffee, "Coffee", Color.Unspecified, Modifier.padding(2.dp, 2.dp, 0.dp, 0.dp))
         "skullofsatoshi" -> HashtagIcon(R.drawable.skull, "SkullofSatoshi", Color.Unspecified, Modifier.padding(2.dp, 1.dp, 0.dp, 0.dp))
         "grownostr", "gardening", "garden" -> HashtagIcon(R.drawable.grownostr, "GrowNostr", Color.Unspecified, Modifier.padding(0.dp, 1.dp, 0.dp, 1.dp))
         "footstr" -> HashtagIcon(R.drawable.footstr, "Footstr", Color.Unspecified, Modifier.padding(1.dp, 1.dp, 0.dp, 0.dp))
+        "tunestr", "music", "nowplaying" -> HashtagIcon(R.drawable.tunestr, "Tunestr", primary, Modifier.padding(0.dp, 3.dp, 0.dp, 1.dp))
         "weed", "weedstr", "420", "cannabis", "marijuana" -> HashtagIcon(R.drawable.weed, "Weed", Color.Unspecified, Modifier.padding(0.dp, 0.dp, 0.dp, 0.dp))
         else -> null
     }
 }
+
+@Immutable
 class HashtagIcon(
     val icon: Int,
     val description: String,

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

@@ -3,9 +3,9 @@ package com.vitorpamplona.amethyst.model
 import android.util.Log
 import androidx.compose.runtime.Stable
 import com.vitorpamplona.amethyst.Amethyst
+import com.vitorpamplona.amethyst.service.HexValidator
 import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.*
-import com.vitorpamplona.amethyst.service.model.ATag.Companion.isATag
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.ui.components.BundledInsert
@@ -13,7 +13,6 @@ import fr.acinq.secp256k1.Hex
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
-import nostr.postr.toNpub
 import java.io.File
 import java.io.FileOutputStream
 import java.io.IOException
@@ -36,25 +35,28 @@ object LocalCache {
     fun checkGetOrCreateUser(key: String): User? {
         checkNotInMainThread()
 
-        if (isValidHexNpub(key)) {
+        if (isValidHex(key)) {
             return getOrCreateUser(key)
         }
         return null
     }
 
-    @Synchronized
     fun getOrCreateUser(key: HexKey): User {
         // checkNotInMainThread()
 
         return users[key] ?: run {
-            val answer = User(key)
-            users.put(key, answer)
-            answer
+            val newObject = User(key)
+            users.putIfAbsent(key, newObject) ?: newObject
         }
     }
 
     fun getUserIfExists(key: String): User? {
-        return users[key]
+        if (key.isEmpty()) return null
+        return users.get(key)
+    }
+
+    fun getAddressableNoteIfExists(key: String): AddressableNote? {
+        return addressables[key]
     }
 
     fun getNoteIfExists(key: String): Note? {
@@ -71,34 +73,32 @@ object LocalCache {
         if (ATag.isATag(key)) {
             return checkGetOrCreateAddressableNote(key)
         }
-        if (isValidHexNpub(key)) {
+        if (isValidHex(key)) {
             val note = getOrCreateNote(key)
             val noteEvent = note.event
-            if (noteEvent is AddressableEvent) {
+            return if (noteEvent is AddressableEvent) {
                 // upgrade to the latest
-                return checkGetOrCreateAddressableNote(noteEvent.address().toTag())
+                checkGetOrCreateAddressableNote(noteEvent.address().toTag())
             } else {
-                return note
+                note
             }
         }
         return null
     }
 
-    @Synchronized
     fun getOrCreateNote(idHex: String): Note {
         checkNotInMainThread()
 
-        return notes[idHex] ?: run {
-            val answer = Note(idHex)
-            notes.put(idHex, answer)
-            answer
+        return notes.get(idHex) ?: run {
+            val newObject = Note(idHex)
+            notes.putIfAbsent(idHex, newObject) ?: newObject
         }
     }
 
     fun checkGetOrCreateChannel(key: String): Channel? {
         checkNotInMainThread()
 
-        if (isValidHexNpub(key)) {
+        if (isValidHex(key)) {
             return getOrCreateChannel(key) {
                 PublicChatChannel(key)
             }
@@ -112,26 +112,19 @@ object LocalCache {
         return null
     }
 
-    private fun isValidHexNpub(key: String): Boolean {
+    private fun isValidHex(key: String): Boolean {
+        if (key.isBlank()) return false
         if (key.contains(":")) return false
 
-        return try {
-            Hex.decode(key).toNpub()
-            true
-        } catch (e: IllegalArgumentException) {
-            Log.e("LocalCache", "Invalid Key to create user: $key", e)
-            false
-        }
+        return HexValidator.isHex(key)
     }
 
-    @Synchronized
     fun getOrCreateChannel(key: String, channelFactory: (String) -> Channel): Channel {
         checkNotInMainThread()
 
         return channels[key] ?: run {
-            val answer = channelFactory(key)
-            channels.put(key, answer)
-            answer
+            val newObject = channelFactory(key)
+            channels.putIfAbsent(key, newObject) ?: newObject
         }
     }
 
@@ -149,16 +142,14 @@ object LocalCache {
         }
     }
 
-    @Synchronized
     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)
-            addressables.put(key.toTag(), answer)
-            answer
+            val newObject = AddressableNote(key)
+            addressables.putIfAbsent(key.toTag(), newObject) ?: newObject
         }
     }
 
@@ -245,7 +236,7 @@ object LocalCache {
 
         note.loadEvent(event, author, replyTo)
 
-        // Log.d("TN", "New Note (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${note.event?.content()?.take(100)} ${formattedDateTime(event.createdAt)}")
+        // Log.d("TN", "New Note (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${note.event?.content()?.split("\n")?.take(100)} ${formattedDateTime(event.createdAt)}")
 
         // Prepares user's profile view.
         author.addNote(note)
@@ -317,7 +308,7 @@ object LocalCache {
 
         note.loadEvent(event, author, replyTo)
 
-        // Log.d("TN", "New Note (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${note.event?.content()?.take(100)} ${formattedDateTime(event.createdAt)}")
+        // Log.d("TN", "New Note (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${note.event?.content()?.split("\n")?.take(100)} ${formattedDateTime(event.createdAt)}")
 
         // Prepares user's profile view.
         author.addNote(note)
@@ -330,6 +321,25 @@ object LocalCache {
         refreshObservers(note)
     }
 
+    private fun consume(event: CommunityDefinitionEvent, relay: Relay?) {
+        val version = getOrCreateNote(event.id)
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        if (version.event == null) {
+            version.loadEvent(event, author, emptyList())
+            version.moveAllReferencesTo(note)
+        }
+
+        if (note.event?.id() == event.id()) return
+
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
+
+            refreshObservers(note)
+        }
+    }
+
     private fun consume(event: LiveActivitiesEvent, relay: Relay?) {
         val version = getOrCreateNote(event.id)
         val note = getOrCreateAddressableNote(event.address())
@@ -354,6 +364,44 @@ object LocalCache {
         }
     }
 
+    fun consume(event: EmojiPackSelectionEvent) {
+        val version = getOrCreateNote(event.id)
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        if (version.event == null) {
+            version.loadEvent(event, author, emptyList())
+            version.moveAllReferencesTo(note)
+        }
+
+        if (note.event?.id() == event.id()) return
+
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
+
+            refreshObservers(note)
+        }
+    }
+
+    private fun consume(event: EmojiPackEvent) {
+        val version = getOrCreateNote(event.id)
+        val note = getOrCreateAddressableNote(event.address())
+        val author = getOrCreateUser(event.pubKey)
+
+        if (version.event == null) {
+            version.loadEvent(event, author, emptyList())
+            version.moveAllReferencesTo(note)
+        }
+
+        if (note.event?.id() == event.id()) return
+
+        if (event.createdAt > (note.createdAt() ?: 0)) {
+            note.loadEvent(event, author, emptyList())
+
+            refreshObservers(note)
+        }
+    }
+
     private fun consume(event: PinListEvent) {
         val version = getOrCreateNote(event.id)
         val note = getOrCreateAddressableNote(event.address())
@@ -547,8 +595,7 @@ object LocalCache {
 
         // Log.d("PM", "${author.toBestDisplayName()} to ${recipient?.toBestDisplayName()}")
 
-        val repliesTo = event.tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
-            .mapNotNull { checkGetOrCreateNote(it) }
+        val repliesTo = event.taggedEvents().mapNotNull { checkGetOrCreateNote(it) }
 
         note.loadEvent(event, author, repliesTo)
 
@@ -667,6 +714,34 @@ object LocalCache {
         refreshObservers(note)
     }
 
+    fun consume(event: CommunityPostApprovalEvent) {
+        val note = getOrCreateNote(event.id)
+
+        // Already processed this event.
+        if (note.event != null) return
+
+        // Log.d("TN", "New Boost (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${formattedDateTime(event.createdAt)}")
+
+        val author = getOrCreateUser(event.pubKey)
+
+        val communities = event.communities()
+        val eventsApproved = event.approvedEvents().mapNotNull { checkGetOrCreateNote(it) }
+
+        val repliesTo = communities.map { getOrCreateAddressableNote(it) }
+
+        note.loadEvent(event, author, eventsApproved)
+
+        // Prepares user's profile view.
+        author.addNote(note)
+
+        // Counts the replies
+        repliesTo.forEach {
+            it.addBoost(note)
+        }
+
+        refreshObservers(note)
+    }
+
     fun consume(event: ReactionEvent) {
         val note = getOrCreateNote(event.id)
 
@@ -812,7 +887,7 @@ object LocalCache {
 
         note.loadEvent(event, author, replyTo)
 
-        // Log.d("CM", "New Note (${notes.size},${users.size}) ${note.author?.toBestDisplayName()} ${note.event?.content()} ${formattedDateTime(event.createdAt)}")
+        // Log.d("CM", "New Chat Note (${note.author?.toBestDisplayName()} ${note.event?.content()} ${formattedDateTime(event.createdAt)}")
 
         // Counts the replies
         replyTo.forEach {
@@ -1100,8 +1175,7 @@ object LocalCache {
                 it.idNote().startsWith(text, true)
         } + addressables.values.filter {
             (it.event as? LongTextNoteEvent)?.content?.contains(text, true) ?: false ||
-                (it.event as? LongTextNoteEvent)?.title()?.contains(text, true) ?: false ||
-                (it.event as? LongTextNoteEvent)?.summary()?.contains(text, true) ?: false ||
+                it.event?.matchTag1With(text) ?: false ||
                 it.idHex.startsWith(text, true)
         }
     }
@@ -1152,7 +1226,7 @@ object LocalCache {
                 }
             }
 
-            println("PRUNE: ${toBeRemoved.size} messages removed from ${it.value.toBestDisplayName()}")
+            println("PRUNE: ${toBeRemoved.size} messages removed from ${it.value.toBestDisplayName()}. ${it.value.notes.size} kept")
         }
     }
 
@@ -1232,8 +1306,17 @@ object LocalCache {
                 is ChannelMessageEvent -> consume(event, relay)
                 is ChannelMetadataEvent -> consume(event)
                 is ChannelMuteUserEvent -> consume(event)
+                is CommunityDefinitionEvent -> consume(event, relay)
+                is CommunityPostApprovalEvent -> {
+                    event.containedPost()?.let {
+                        verifyAndConsume(it, relay)
+                    }
+                    consume(event)
+                }
                 is ContactListEvent -> consume(event)
                 is DeletionEvent -> consume(event)
+                is EmojiPackEvent -> consume(event)
+                is EmojiPackSelectionEvent -> consume(event)
 
                 is FileHeaderEvent -> consume(event, relay)
                 is FileStorageEvent -> consume(event, relay)
@@ -1289,7 +1372,7 @@ class LocalCacheLiveData {
     val newEventBundles = _newEventBundles.asSharedFlow() // read-only public view
 
     // Refreshes observers in batches.
-    private val bundler = BundledInsert<Note>(300, Dispatchers.IO)
+    private val bundler = BundledInsert<Note>(1000, Dispatchers.IO)
 
     fun invalidateData(newNote: Note) {
         bundler.invalidateList(newNote) { bundledNewNotes ->

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

@@ -5,11 +5,13 @@ 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.firstFullCharOrEmoji
 import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.nip19.Nip19
 import com.vitorpamplona.amethyst.service.relays.EOSETime
 import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
 import com.vitorpamplona.amethyst.ui.actions.updated
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import com.vitorpamplona.amethyst.ui.note.toShortenHex
@@ -19,7 +21,6 @@ import java.math.BigDecimal
 import java.time.Instant
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
-import java.util.Date
 import java.util.regex.Pattern
 
 val tagSearch = Pattern.compile("(?:\\s|\\A)\\#\\[([0-9]+)\\]")
@@ -77,11 +78,20 @@ open class Note(val idHex: String) {
     open fun idDisplayNote() = idNote().toShortenHex()
 
     fun channelHex(): HexKey? {
-        return (event as? ChannelMessageEvent)?.channel()
-            ?: (event as? ChannelMetadataEvent)?.channel()
-            ?: (event as? ChannelCreateEvent)?.id
-            ?: (event as? LiveActivitiesChatMessageEvent)?.activity()?.toTag()
-            ?: (event as? LiveActivitiesEvent)?.address()?.toTag()
+        return if (event is ChannelMessageEvent ||
+            event is ChannelMetadataEvent ||
+            event is ChannelCreateEvent ||
+            event is LiveActivitiesChatMessageEvent ||
+            event is LiveActivitiesEvent
+        ) {
+            (event as? ChannelMessageEvent)?.channel()
+                ?: (event as? ChannelMetadataEvent)?.channel()
+                ?: (event as? ChannelCreateEvent)?.id
+                ?: (event as? LiveActivitiesChatMessageEvent)?.activity()?.toTag()
+                ?: (event as? LiveActivitiesEvent)?.address()?.toTag()
+        } else {
+            null
+        }
     }
 
     open fun address(): ATag? = null
@@ -144,7 +154,8 @@ open class Note(val idHex: String) {
         liveSet?.boosts?.invalidateData()
     }
     fun removeReaction(note: Note) {
-        val reaction = note.event?.content() ?: "+"
+        val tags = note.event?.tags() ?: emptyList()
+        val reaction = note.event?.content()?.firstFullCharOrEmoji(ImmutableListOfLists(tags)) ?: "+"
 
         if (reaction in reactions.keys && reactions[reaction]?.contains(note) == true) {
             reactions[reaction]?.let {
@@ -225,7 +236,8 @@ open class Note(val idHex: String) {
     }
 
     fun addReaction(note: Note) {
-        val reaction = note.event?.content() ?: "+"
+        val tags = note.event?.tags() ?: emptyList()
+        val reaction = note.event?.content()?.firstFullCharOrEmoji(ImmutableListOfLists(tags)) ?: "+"
 
         if (reaction !in reactions.keys) {
             reactions = reactions + Pair(reaction, setOf(note))
@@ -270,10 +282,63 @@ open class Note(val idHex: String) {
         }
     }
 
-    fun isReactedBy(user: User): String? {
-        return reactions.filter {
-            it.value.any { it.author?.pubkeyHex == user.pubkeyHex }
-        }.keys.firstOrNull()
+    fun publicZapAuthors(): Set<User> {
+        // Zaps who the requester was the user
+        return zaps.mapNotNull {
+            it.key.author
+        }.toSet()
+    }
+
+    fun publicZapAuthorHexes(): Set<HexKey> {
+        // Zaps who the requester was the user
+        return zaps.mapNotNull {
+            it.key.author?.pubkeyHex
+        }.toSet()
+    }
+
+    fun reactionAuthors(): Set<User> {
+        // Zaps who the requester was the user
+        return reactions.values.map {
+            it.mapNotNull { it.author }
+        }.flatten().toSet()
+    }
+
+    fun reactionAuthorHexes(): Set<HexKey> {
+        // Zaps who the requester was the user
+        return reactions.values.map {
+            it.mapNotNull { it.author?.pubkeyHex }
+        }.flatten().toSet()
+    }
+
+    fun replyAuthorHexes(): Set<HexKey> {
+        // Zaps who the requester was the user
+        return replies.mapNotNull {
+            it.author?.pubkeyHex
+        }.toSet()
+    }
+
+    fun replyAuthors(): Set<User> {
+        // Zaps who the requester was the user
+        return replies.mapNotNull {
+            it.author
+        }.toSet()
+    }
+
+    fun boostAuthors(): Set<User> {
+        // Zaps who the requester was the user
+        return boosts.mapNotNull {
+            it.author
+        }.toSet()
+    }
+
+    fun getReactionBy(user: User): String? {
+        return reactions.firstNotNullOfOrNull {
+            if (it.value.any { it.author?.pubkeyHex == user.pubkeyHex }) {
+                it.key
+            } else {
+                null
+            }
+        }
     }
 
     fun isBoostedBy(user: User): Boolean {
@@ -372,7 +437,7 @@ open class Note(val idHex: String) {
     }
 
     fun hasAnyReports(): Boolean {
-        val dayAgo = Date().time / 1000 - 24 * 60 * 60
+        val dayAgo = TimeUtils.oneDayAgo()
         return reports.isNotEmpty() ||
             (
                 author?.reports?.values?.any {
@@ -401,7 +466,7 @@ open class Note(val idHex: String) {
     }
 
     fun reactedBy(loggedIn: User, content: String): List<Note> {
-        return reactions[content]?.filter { it.author == loggedIn && it.event?.content() == content } ?: emptyList()
+        return reactions[content]?.filter { it.author == loggedIn } ?: emptyList()
     }
 
     fun reactedBy(loggedIn: User): List<String> {
@@ -409,8 +474,7 @@ open class Note(val idHex: String) {
     }
 
     fun hasBoostedInTheLast5Minutes(loggedIn: User): Boolean {
-        val currentTime = Date().time / 1000
-        return boosts.firstOrNull { it.author == loggedIn && (it.createdAt() ?: 0) > currentTime - (60 * 5) } != null // 5 minute protection
+        return boosts.firstOrNull { it.author == loggedIn && (it.createdAt() ?: 0) > TimeUtils.fiveMinutesAgo() } != null // 5 minute protection
     }
 
     fun boostedBy(loggedIn: User): List<Note> {
@@ -493,10 +557,14 @@ class NoteLiveSet(u: Note) {
 
 class NoteLiveData(val note: Note) : LiveData<NoteState>(NoteState(note)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO)
+    private val bundler = BundledUpdate(500, Dispatchers.IO)
 
     fun invalidateData() {
+        checkNotInMainThread()
+
         bundler.invalidate() {
+            checkNotInMainThread()
+
             if (hasActiveObservers()) {
                 postValue(NoteState(note))
             }

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

@@ -0,0 +1,75 @@
+package com.vitorpamplona.amethyst.model
+
+class ParticipantListBuilder {
+    private fun addFollowsThatDirectlyParticipateOnToSet(baseNote: Note, followingSet: Set<HexKey>?, set: MutableSet<User>) {
+        baseNote.author?.let { author ->
+            if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+        }
+
+        // Breaks these searchers down to avoid the memory use of creating multiple lists
+        baseNote.replies.forEach { reply ->
+            reply.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.boosts.forEach { boost ->
+            boost.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.zaps.forEach { zapPair ->
+            zapPair.key.author?.let { author ->
+                if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+            }
+        }
+
+        baseNote.reactions.forEach { reactionSet ->
+            reactionSet.value.forEach { reaction ->
+                reaction.author?.let { author ->
+                    if (author !in set && (followingSet == null || author.pubkeyHex in followingSet)) set.add(author)
+                }
+            }
+        }
+    }
+
+    fun followsThatParticipateOnDirect(baseNote: Note?, followingSet: Set<HexKey>?): Set<User> {
+        if (baseNote == null) return mutableSetOf()
+
+        val set = mutableSetOf<User>()
+        addFollowsThatDirectlyParticipateOnToSet(baseNote, followingSet, set)
+        return set
+    }
+
+    fun followsThatParticipateOn(baseNote: Note?, followingSet: Set<HexKey>?): Set<User> {
+        if (baseNote == null) return mutableSetOf()
+
+        val mySet = mutableSetOf<User>()
+        addFollowsThatDirectlyParticipateOnToSet(baseNote, followingSet, mySet)
+
+        baseNote.replies.forEach {
+            addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+        }
+
+        baseNote.boosts.forEach {
+            it.replyTo?.forEach {
+                addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+            }
+        }
+
+        LocalCache.getChannelIfExists(baseNote.idHex)?.notes?.values?.forEach {
+            addFollowsThatDirectlyParticipateOnToSet(it, followingSet, mySet)
+        }
+
+        return mySet
+    }
+
+    fun countFollowsThatParticipateOn(baseNote: Note?, followingSet: Set<HexKey>?): Int {
+        if (baseNote == null) return 0
+
+        val list = followsThatParticipateOn(baseNote, followingSet)
+
+        return list.size
+    }
+}

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

@@ -1,7 +1,6 @@
 package com.vitorpamplona.amethyst.model
 
 import com.vitorpamplona.amethyst.service.checkNotInMainThread
-import com.vitorpamplona.amethyst.service.model.ATag
 import com.vitorpamplona.amethyst.service.model.GenericRepostEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
 import kotlin.time.ExperimentalTime
@@ -43,16 +42,7 @@ class ThreadAssembler {
         checkNotInMainThread()
 
         val (result, elapsed) = measureTimedValue {
-            val note = if (noteId.contains(":")) {
-                val aTag = ATag.parse(noteId, null)
-                if (aTag != null) {
-                    LocalCache.getOrCreateAddressableNote(aTag)
-                } else {
-                    return emptySet()
-                }
-            } else {
-                LocalCache.getOrCreateNote(noteId)
-            }
+            val note = LocalCache.checkGetOrCreateNote(noteId) ?: return emptySet<Note>()
 
             if (note.event != null) {
                 val thread = mutableSetOf<Note>()

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

@@ -0,0 +1,13 @@
+package com.vitorpamplona.amethyst.model
+
+object TimeUtils {
+    const val fiveMinutes = 60 * 5
+    const val oneHour = 60 * 60
+    const val oneDay = 24 * 60 * 60
+
+    fun now() = System.currentTimeMillis() / 1000
+    fun fiveMinutesAgo() = now() - fiveMinutes
+    fun oneHourAgo() = now() - oneHour
+    fun oneDayAgo() = now() - oneDay
+    fun eightHoursAgo() = now() - (oneHour * 8)
+}

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

@@ -12,6 +12,8 @@ import com.vitorpamplona.amethyst.service.model.MetadataEvent
 import com.vitorpamplona.amethyst.service.model.ReportEvent
 import com.vitorpamplona.amethyst.service.relays.EOSETime
 import com.vitorpamplona.amethyst.service.relays.Relay
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
+import com.vitorpamplona.amethyst.ui.actions.toImmutableListOfLists
 import com.vitorpamplona.amethyst.ui.components.BundledUpdate
 import com.vitorpamplona.amethyst.ui.note.toShortenHex
 import fr.acinq.secp256k1.Hex
@@ -29,6 +31,7 @@ class User(val pubkeyHex: String) {
 
     var latestContactList: ContactListEvent? = null
     var latestBookmarkList: BookmarkListEvent? = null
+    var latestAcceptedBadges: AddressableNote? = null
 
     var notes = setOf<Note>()
         private set
@@ -47,8 +50,6 @@ class User(val pubkeyHex: String) {
     var privateChatrooms = mapOf<User, Chatroom>()
         private set
 
-    var acceptedBadges: AddressableNote? = null
-
     fun pubkey() = Hex.decode(pubkeyHex)
     fun pubkeyNpub() = pubkey().toNpub()
 
@@ -144,8 +145,8 @@ class User(val pubkeyHex: String) {
     }
 
     fun updateAcceptedBadges(note: AddressableNote) {
-        if (acceptedBadges?.idHex != note.idHex) {
-            acceptedBadges = note
+        if (latestAcceptedBadges?.idHex != note.idHex) {
+            latestAcceptedBadges = note
             liveSet?.badges?.invalidateData()
         }
     }
@@ -187,34 +188,34 @@ class User(val pubkeyHex: String) {
     }
 
     @Synchronized
-    private fun getOrCreatePrivateChatroom(user: User): Chatroom {
+    private fun getOrCreatePrivateChatroomSync(user: User): Chatroom {
         checkNotInMainThread()
 
         return privateChatrooms[user] ?: run {
-            val privateChatroom = Chatroom(setOf<Note>())
+            val privateChatroom = Chatroom()
             privateChatrooms = privateChatrooms + Pair(user, privateChatroom)
             privateChatroom
         }
     }
 
-    @Synchronized
-    fun addMessage(user: User, msg: Note) {
-        checkNotInMainThread()
+    private fun getOrCreatePrivateChatroom(user: User): Chatroom {
+        return privateChatrooms[user] ?: getOrCreatePrivateChatroomSync(user)
+    }
 
+    fun addMessage(user: User, msg: Note) {
         val privateChatroom = getOrCreatePrivateChatroom(user)
         if (msg !in privateChatroom.roomMessages) {
-            privateChatroom.roomMessages = privateChatroom.roomMessages + msg
+            privateChatroom.addMessageSync(msg)
             liveSet?.messages?.invalidateData()
         }
     }
 
-    @Synchronized
     fun removeMessage(user: User, msg: Note) {
         checkNotInMainThread()
 
         val privateChatroom = getOrCreatePrivateChatroom(user)
         if (msg in privateChatroom.roomMessages) {
-            privateChatroom.roomMessages = privateChatroom.roomMessages - msg
+            privateChatroom.removeMessageSync(msg)
             liveSet?.messages?.invalidateData()
         }
     }
@@ -237,6 +238,7 @@ class User(val pubkeyHex: String) {
         info = newUserInfo
         info?.latestMetadata = latestMetadata
         info?.updatedMetadataAt = latestMetadata.createdAt
+        info?.tags = latestMetadata.tags.toImmutableListOfLists()
 
         if (newUserInfo.lud16.isNullOrBlank() && newUserInfo.lud06?.lowercase()?.startsWith("lnurl") == true) {
             try {
@@ -373,7 +375,27 @@ data class RelayInfo(
     var counter: Long
 )
 
-data class Chatroom(var roomMessages: Set<Note>)
+class Chatroom() {
+    var roomMessages: Set<Note> = setOf()
+
+    @Synchronized
+    fun addMessageSync(msg: Note) {
+        checkNotInMainThread()
+
+        if (msg !in roomMessages) {
+            roomMessages = roomMessages + msg
+        }
+    }
+
+    @Synchronized
+    fun removeMessageSync(msg: Note) {
+        checkNotInMainThread()
+
+        if (msg !in roomMessages) {
+            roomMessages = roomMessages + msg
+        }
+    }
+}
 
 @Stable
 class UserMetadata {
@@ -401,6 +423,7 @@ class UserMetadata {
 
     var updatedMetadataAt: Long = 0
     var latestMetadata: MetadataEvent? = null
+    var tags: ImmutableListOfLists<String>? = null
 
     fun anyName(): String? {
         return display_name ?: displayName ?: name ?: username
@@ -414,14 +437,35 @@ class UserMetadata {
     fun lnAddress(): String? {
         return (lud16?.trim() ?: lud06?.trim())?.ifBlank { null }
     }
+
+    fun bestUsername(): String? {
+        return name?.ifBlank { null } ?: username?.ifBlank { null }
+    }
+
+    fun bestDisplayName(): String? {
+        return displayName?.ifBlank { null } ?: display_name?.ifBlank { null }
+    }
+
+    fun nip05(): String? {
+        return nip05?.ifBlank { null }
+    }
+
+    fun profilePicture(): String? {
+        if (picture.isNullOrBlank()) picture = null
+        return picture
+    }
 }
 
 class UserLiveData(val user: User) : LiveData<UserState>(UserState(user)) {
     // Refreshes observers in batches.
-    private val bundler = BundledUpdate(300, Dispatchers.IO)
+    private val bundler = BundledUpdate(500, Dispatchers.IO)
 
     fun invalidateData() {
+        checkNotInMainThread()
+
         bundler.invalidate() {
+            checkNotInMainThread()
+
             if (hasActiveObservers()) {
                 postValue(UserState(user))
             }

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

@@ -49,6 +49,8 @@ object BlurHashDecoder {
      *                 By default it is true.
      */
     fun decode(blurHash: String?, width: Int, height: Int, punch: Float = 1f, useCache: Boolean = true): Bitmap? {
+        checkNotInMainThread()
+
         if (blurHash == null || blurHash.length < 6) {
             return null
         }

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

@@ -0,0 +1,291 @@
+package com.vitorpamplona.amethyst.service
+
+import android.util.Log
+import android.util.LruCache
+import android.util.Patterns
+import androidx.compose.runtime.Immutable
+import com.linkedin.urls.detection.UrlDetector
+import com.linkedin.urls.detection.UrlDetectorOptions
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlContent
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlImage
+import com.vitorpamplona.amethyst.ui.components.ZoomableUrlVideo
+import com.vitorpamplona.amethyst.ui.components.hashTagsPattern
+import com.vitorpamplona.amethyst.ui.components.imageExtensions
+import com.vitorpamplona.amethyst.ui.components.startsWithNIP19Scheme
+import com.vitorpamplona.amethyst.ui.components.tagIndex
+import com.vitorpamplona.amethyst.ui.components.videoExtensions
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.ImmutableMap
+import kotlinx.collections.immutable.ImmutableSet
+import kotlinx.collections.immutable.persistentListOf
+import kotlinx.collections.immutable.toImmutableList
+import kotlinx.collections.immutable.toImmutableMap
+import kotlinx.collections.immutable.toImmutableSet
+import java.util.regex.Pattern
+
+@Immutable
+data class RichTextViewerState(
+    val urlSet: ImmutableSet<String>,
+    val imagesForPager: ImmutableMap<String, ZoomableUrlContent>,
+    val imageList: ImmutableList<ZoomableUrlContent>,
+    val customEmoji: ImmutableMap<String, String>,
+    val paragraphs: ImmutableList<ImmutableList<Segment>>
+)
+
+object CachedRichTextParser {
+    val richTextCache = LruCache<String, RichTextViewerState>(200)
+
+    fun parseText(content: String, tags: ImmutableListOfLists<String>): RichTextViewerState {
+        return if (richTextCache[content] != null) {
+            richTextCache[content]
+        } else {
+            val newUrls = RichTextParser().parseText(content, tags)
+            richTextCache.put(content, newUrls)
+            newUrls
+        }
+    }
+}
+
+// Group 1 = url, group 4 additional chars
+// val noProtocolUrlValidator = Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+)*\\/?)(.*)")
+
+// Android9 seems to have an issue starting this regex.
+val noProtocolUrlValidator = try {
+    Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]*[^\\p{IsHan}\\p{IsHiragana}\\p{IsKatakana}])*\\/?)(.*)")
+} catch (e: Exception) {
+    Pattern.compile("(([\\w\\d-]+\\.)*[a-zA-Z][\\w-]+[\\.\\:]\\w+([\\/\\?\\=\\&\\#\\.]?[\\w-]+)*\\/?)(.*)")
+}
+
+class RichTextParser() {
+    fun parseText(
+        content: String,
+        tags: ImmutableListOfLists<String>
+    ): RichTextViewerState {
+        val urls = UrlDetector(content, UrlDetectorOptions.Default).detect()
+
+        val urlSet = urls.mapNotNullTo(LinkedHashSet(urls.size)) {
+            // removes e-mails
+            if (Patterns.EMAIL_ADDRESS.matcher(it.originalUrl).matches()) {
+                null
+            } else if (isNumber(it.originalUrl)) {
+                null
+            } else if (it.originalUrl.contains("。")) {
+                null
+            } else {
+                val pattern = "^((http|https)://)?([A-Za-z0-9-]+(\\.[A-Za-z0-9]+)+)(:[0-9]+)?(/[^?#]*)?(\\?[^#]*)?(#.*)?".toRegex(RegexOption.IGNORE_CASE)
+                if (pattern.matches(it.originalUrl)) {
+                    it.originalUrl
+                } else {
+                    null
+                }
+            }
+        }
+
+        val imagesForPager = urlSet.mapNotNull { fullUrl ->
+            val removedParamsFromUrl = fullUrl.split("?")[0].lowercase()
+            if (imageExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                ZoomableUrlImage(fullUrl)
+            } else if (videoExtensions.any { removedParamsFromUrl.endsWith(it) }) {
+                ZoomableUrlVideo(fullUrl)
+            } else {
+                null
+            }
+        }.associateBy { it.url }
+        val imageList = imagesForPager.values.toList()
+
+        val emojiMap =
+            tags.lists.filter { it.size > 2 && it[0] == "emoji" }.associate { ":${it[1]}:" to it[2] }
+
+        val segments = findTextSegments(content, imagesForPager.keys, urlSet, emojiMap, tags)
+
+        return RichTextViewerState(
+            urlSet.toImmutableSet(),
+            imagesForPager.toImmutableMap(),
+            imageList.toImmutableList(),
+            emojiMap.toImmutableMap(),
+            segments
+        )
+    }
+
+    private fun findTextSegments(content: String, images: Set<String>, urls: Set<String>, emojis: Map<String, String>, tags: ImmutableListOfLists<String>): ImmutableList<ImmutableList<Segment>> {
+        var paragraphSegments = persistentListOf<ImmutableList<Segment>>()
+
+        content.split('\n').forEach { paragraph ->
+            var segments = persistentListOf<Segment>()
+            var isDirty = false
+
+            val wordList = paragraph.split(' ')
+            wordList.forEach { word ->
+                val wordSegment = wordIdentifier(word, images, urls, emojis, tags)
+                if (wordSegment !is RegularTextSegment) {
+                    isDirty = true
+                }
+                segments = segments.add(wordSegment)
+            }
+
+            val newSegments = if (isDirty) {
+                if (isArabic(paragraph)) {
+                    segments.asReversed().toImmutableList()
+                } else {
+                    segments
+                }
+            } else {
+                persistentListOf<Segment>(RegularTextSegment(paragraph))
+            }
+
+            paragraphSegments = paragraphSegments.add(newSegments)
+        }
+
+        return paragraphSegments
+    }
+
+    fun isNumber(word: String): Boolean {
+        return numberPattern.matcher(word).matches()
+    }
+
+    fun isDate(word: String): Boolean {
+        return shortDatePattern.matcher(word).matches() || longDatePattern.matcher(word).matches()
+    }
+
+    private fun isArabic(text: String): Boolean {
+        return text.any { it in '\u0600'..'\u06FF' || it in '\u0750'..'\u077F' }
+    }
+
+    private fun wordIdentifier(word: String, images: Set<String>, urls: Set<String>, emojis: Map<String, String>, tags: ImmutableListOfLists<String>): Segment {
+        val emailMatcher = Patterns.EMAIL_ADDRESS.matcher(word)
+        val phoneMatcher = Patterns.PHONE.matcher(word)
+        val schemelessMatcher = noProtocolUrlValidator.matcher(word)
+
+        return if (word.isEmpty()) {
+            RegularTextSegment(word)
+        } else if (images.contains(word)) {
+            ImageSegment(word)
+        } else if (urls.contains(word)) {
+            LinkSegment(word)
+        } else if (emojis.any { word.contains(it.key) }) {
+            EmojiSegment(word)
+        } else if (word.startsWith("lnbc", true)) {
+            InvoiceSegment(word)
+        } else if (word.startsWith("lnurl", true)) {
+            WithdrawSegment(word)
+        } else if (word.startsWith("cashuA", true)) {
+            CashuSegment(word)
+        } else if (emailMatcher.matches()) {
+            EmailSegment(word)
+        } else if (word.length in 7..14 && !isDate(word) && phoneMatcher.matches()) {
+            PhoneSegment(word)
+        } else if (startsWithNIP19Scheme(word)) {
+            BechSegment(word)
+        } else if (word.startsWith("#")) {
+            parseHash(word, tags)
+        } else if (schemelessMatcher.find()) {
+            val url = schemelessMatcher.group(1) // url
+            val additionalChars = schemelessMatcher.group(4) // additional chars
+            val pattern = "^([A-Za-z0-9-]+(\\.[A-Za-z0-9]+)+)(:[0-9]+)?(/[^?#]*)?(\\?[^#]*)?(#.*)?".toRegex(RegexOption.IGNORE_CASE)
+            if (pattern.matches(word)) {
+                SchemelessUrlSegment(word, url, additionalChars)
+            } else {
+                RegularTextSegment(word)
+            }
+        } else {
+            RegularTextSegment(word)
+        }
+    }
+
+    private fun parseHash(word: String, tags: ImmutableListOfLists<String>): Segment {
+        // First #[n]
+
+        val matcher = tagIndex.matcher(word)
+        try {
+            if (matcher.find()) {
+                val index = matcher.group(1)?.toInt()
+                val suffix = matcher.group(2)
+
+                if (index != null && index >= 0 && index < tags.lists.size) {
+                    val tag = tags.lists[index]
+
+                    if (tag.size > 1) {
+                        if (tag[0] == "p") {
+                            return HashIndexUserSegment(word, tag[1], suffix)
+                        } else if (tag[0] == "e" || tag[0] == "a") {
+                            return HashIndexEventSegment(word, tag[1], suffix)
+                        }
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            Log.w("Tag Parser", "Couldn't link tag $word", e)
+        }
+
+        // Second #Amethyst
+        val hashtagMatcher = hashTagsPattern.matcher(word)
+
+        try {
+            if (hashtagMatcher.find()) {
+                val hashtag = hashtagMatcher.group(1)
+                if (hashtag != null) {
+                    return HashTagSegment(word, hashtag, hashtagMatcher.group(2))
+                }
+            }
+        } catch (e: Exception) {
+            Log.e("Hashtag Parser", "Couldn't link hashtag $word", e)
+        }
+
+        return RegularTextSegment(word)
+    }
+
+    companion object {
+        val longDatePattern: Pattern = Pattern.compile("^\\d{4}-\\d{2}-\\d{2}$")
+        val shortDatePattern: Pattern = Pattern.compile("^\\d{2}-\\d{2}-\\d{2}$")
+        val numberPattern: Pattern = Pattern.compile("^(-?[\\d.]+)([a-zA-Z%]*)$")
+    }
+}
+
+@Immutable
+open class Segment(val segmentText: String)
+
+@Immutable
+class ImageSegment(segment: String) : Segment(segment)
+
+@Immutable
+class LinkSegment(segment: String) : Segment(segment)
+
+@Immutable
+class EmojiSegment(segment: String) : Segment(segment)
+
+@Immutable
+class InvoiceSegment(segment: String) : Segment(segment)
+
+@Immutable
+class WithdrawSegment(segment: String) : Segment(segment)
+
+@Immutable
+class CashuSegment(segment: String) : Segment(segment)
+
+@Immutable
+class EmailSegment(segment: String) : Segment(segment)
+
+@Immutable
+class PhoneSegment(segment: String) : Segment(segment)
+
+@Immutable
+class BechSegment(segment: String) : Segment(segment)
+
+@Immutable
+open class HashIndexSegment(segment: String, val hex: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class HashIndexUserSegment(segment: String, hex: String, extras: String?) : HashIndexSegment(segment, hex, extras)
+
+@Immutable
+class HashIndexEventSegment(segment: String, hex: String, extras: String?) : HashIndexSegment(segment, hex, extras)
+
+@Immutable
+class HashTagSegment(segment: String, val hashtag: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class SchemelessUrlSegment(segment: String, val url: String, val extras: String?) : Segment(segment)
+
+@Immutable
+class RegularTextSegment(segment: String) : Segment(segment)

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

@@ -0,0 +1,98 @@
+package com.vitorpamplona.amethyst.service
+
+import androidx.compose.runtime.Immutable
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.google.gson.JsonArray
+import com.google.gson.JsonObject
+import com.google.gson.JsonParser
+import com.vitorpamplona.amethyst.service.lnurl.LightningAddressResolver
+import com.vitorpamplona.amethyst.ui.components.GenericLoadable
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+import java.util.Base64
+
+@Immutable
+data class CashuToken(
+    val token: String,
+    val mint: String,
+    val totalAmount: Long,
+    val fees: Int,
+    val redeemInvoiceAmount: Long,
+    val proofs: JsonArray
+)
+
+class CashuProcessor {
+    fun parse(cashuToken: String): GenericLoadable<CashuToken> {
+        checkNotInMainThread()
+
+        try {
+            val base64token = cashuToken.replace("cashuA", "")
+            val cashu = JsonParser.parseString(String(Base64.getDecoder().decode(base64token)))
+            val token = cashu.asJsonObject.get("token").asJsonArray[0].asJsonObject
+            val proofs = token["proofs"].asJsonArray
+            val mint = token["mint"].asString
+
+            var totalAmount = 0L
+            for (proof in proofs) {
+                totalAmount += proof.asJsonObject["amount"].asLong
+            }
+            val fees = Math.max(((totalAmount * 0.02).toInt()), 2)
+            val redeemInvoiceAmount = totalAmount - fees
+
+            return GenericLoadable.Loaded(CashuToken(cashuToken, mint, totalAmount, fees, redeemInvoiceAmount, proofs))
+        } catch (e: Exception) {
+            return GenericLoadable.Error<CashuToken>("Could not parse this cashu token")
+        }
+    }
+
+    fun melt(token: CashuToken, lud16: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        checkNotInMainThread()
+
+        runCatching {
+            LightningAddressResolver().lnAddressInvoice(
+                lnaddress = lud16,
+                milliSats = token.redeemInvoiceAmount * 1000, // Make invoice and leave room for fees
+                message = "Redeem Cashu",
+                onSuccess = { invoice ->
+                    meltInvoice(token, invoice, onSuccess, onError)
+                },
+                onProgress = {
+                },
+                onError = onError
+            )
+        }
+    }
+
+    private fun meltInvoice(token: CashuToken, invoice: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
+        try {
+            val client = HttpClient.getHttpClient()
+            val url = token.mint + "/melt" // Melt cashu tokens at Mint
+
+            val jsonObject = JsonObject()
+            jsonObject.add("proofs", token.proofs)
+            jsonObject.addProperty("pr", invoice)
+
+            val mediaType = "application/json; charset=utf-8".toMediaType()
+            val requestBody = jsonObject.toString().toRequestBody(mediaType)
+            val request = Request.Builder()
+                .url(url)
+                .post(requestBody)
+                .build()
+
+            val response = client.newCall(request).execute()
+            val body = response.body.string()
+            val tree = jacksonObjectMapper().readTree(body)
+
+            val successful = tree?.get("paid")?.asText() == "true"
+
+            if (successful) {
+                onSuccess("Redeemed ${token.totalAmount} Sats" + " (Fees: ${token.fees} Sats)")
+            } else {
+                onError(tree?.get("detail")?.asText()?.split('.')?.getOrNull(0) ?: "Cashu: Tokens already spent.")
+            }
+        } catch (e: Exception) {
+            onError("Token melt failure: " + e.message)
+        }
+    }
+}

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

@@ -16,15 +16,16 @@ class FileHeader(
     val size: Int,
     val dim: String?,
     val blurHash: String?,
-    val description: String? = null
+    val description: String? = null,
+    val sensitiveContent: Boolean = false
 ) {
     companion object {
-        suspend fun prepare(fileUrl: String, mimeType: String?, description: String?, onReady: (FileHeader) -> Unit, onError: () -> Unit) {
+        suspend fun prepare(fileUrl: String, mimeType: String?, description: String?, sensitiveContent: Boolean, onReady: (FileHeader) -> Unit, onError: () -> Unit) {
             try {
                 val imageData: ByteArray? = ImageDownloader().waitAndGetImage(fileUrl)
 
                 if (imageData != null) {
-                    prepare(imageData, fileUrl, mimeType, description, onReady, onError)
+                    prepare(imageData, fileUrl, mimeType, description, sensitiveContent, onReady, onError)
                 } else {
                     onError()
                 }
@@ -39,6 +40,7 @@ class FileHeader(
             fileUrl: String,
             mimeType: String?,
             description: String?,
+            sensitiveContent: Boolean,
             onReady: (FileHeader) -> Unit,
             onError: () -> Unit
         ) {
@@ -79,7 +81,7 @@ class FileHeader(
                     Pair(null, null)
                 }
 
-                onReady(FileHeader(fileUrl, mimeType, hash, size, dim, blurHash, description))
+                onReady(FileHeader(fileUrl, mimeType, hash, size, dim, blurHash, description, sensitiveContent))
             } catch (e: Exception) {
                 Log.e("ImageDownload", "Couldn't convert image in to File Header: ${e.message}")
                 onError()

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

@@ -0,0 +1,23 @@
+package com.vitorpamplona.amethyst.service
+
+object HexValidator {
+
+    private fun isHex2(c: Char): Boolean {
+        return when (c) {
+            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E', 'F', ' ' -> true
+            else -> false
+        }
+    }
+
+    fun isHex(hex: String?): Boolean {
+        if (hex == null) return false
+        var isHex = true
+        for (c in hex.toCharArray()) {
+            if (!isHex2(c)) {
+                isHex = false
+                break
+            }
+        }
+        return isHex
+    }
+}

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

@@ -19,6 +19,9 @@ class Nip05Verifier() {
         if (parts.size == 2) {
             return "https://${parts[1]}/.well-known/nostr.json?name=${parts[0]}"
         }
+        if (parts.size == 1) {
+            return "https://${parts[0]}/.well-known/nostr.json?name=_"
+        }
 
         return null
     }
@@ -31,7 +34,7 @@ class Nip05Verifier() {
     }
 
     private suspend fun fetchNip05JsonSuspend(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
-        // checkNotInMainThread()
+        checkNotInMainThread()
 
         val url = assembleUrl(nip05)
 
@@ -49,6 +52,8 @@ class Nip05Verifier() {
 
                 HttpClient.getHttpClient().newCall(request).enqueue(object : Callback {
                     override fun onResponse(call: Call, response: Response) {
+                        checkNotInMainThread()
+
                         response.use {
                             if (it.isSuccessful) {
                                 onSuccess(it.body.string())
@@ -71,13 +76,15 @@ class Nip05Verifier() {
 
     fun verifyNip05(nip05: String, onSuccess: (String) -> Unit, onError: (String) -> Unit) {
         // check fails on tests
-        // checkNotInMainThread()
+        checkNotInMainThread()
 
         val mapper = jacksonObjectMapper()
 
         fetchNip05Json(
             nip05,
             onSuccess = {
+                checkNotInMainThread()
+
                 // 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.
@@ -88,7 +95,12 @@ class Nip05Verifier() {
                     null
                 }
 
-                val user = nip05.split("@")[0].lowercase()
+                val parts = nip05.split("@")
+                val user = if (parts.size == 2) {
+                    parts[0].lowercase()
+                } else {
+                    "_"
+                }
 
                 val hexKey = nip05url?.get("names")?.get(user)?.asText()
 

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

@@ -51,9 +51,9 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
         return TypedFilter(
             types = COMMON_FEED_TYPES,
             filter = JsonFilter(
-                kinds = listOf(BadgeProfilesEvent.kind),
+                kinds = listOf(BadgeProfilesEvent.kind, EmojiPackSelectionEvent.kind),
                 authors = listOf(account.userProfile().pubkeyHex),
-                limit = 1
+                limit = 10
             )
         )
     }

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

@@ -74,7 +74,7 @@ object NostrChatroomListDataSource : NostrDataSource("MailBoxFeed") {
                     kinds = listOf(ChannelMessageEvent.kind),
                     tags = mapOf("e" to listOf(it)),
                     since = latestEOSEs.users[account.userProfile()]?.followList?.get(chatRoomList)?.relayList,
-                    limit = 25 // Remember to consider spam that is being removed from the UI
+                    limit = 50 // Remember to consider spam that is being removed from the UI
                 )
             )
         }

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

@@ -0,0 +1,41 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.AddressableNote
+import com.vitorpamplona.amethyst.service.model.CommunityDefinitionEvent
+import com.vitorpamplona.amethyst.service.model.CommunityPostApprovalEvent
+import com.vitorpamplona.amethyst.service.relays.COMMON_FEED_TYPES
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+
+object NostrCommunityDataSource : NostrDataSource("SingleCommunityFeed") {
+    private var communityToWatch: AddressableNote? = null
+
+    private fun createLoadCommunityFilter(): TypedFilter? {
+        val myCommunityToWatch = communityToWatch ?: return null
+
+        val community = myCommunityToWatch.event as? CommunityDefinitionEvent ?: return null
+
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                authors = community.moderators().map { it.key }.plus(listOfNotNull(myCommunityToWatch.author?.pubkeyHex)),
+                tags = mapOf(
+                    "a" to listOf(myCommunityToWatch.address.toTag())
+                ),
+                kinds = listOf(CommunityPostApprovalEvent.kind),
+                limit = 500
+            )
+        )
+    }
+
+    val loadCommunityChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        loadCommunityChannel.typedFilters = listOfNotNull(createLoadCommunityFilter()).ifEmpty { null }
+    }
+
+    fun loadCommunity(note: AddressableNote?) {
+        communityToWatch = note
+        invalidateFilters()
+    }
+}

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

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.service
 
 import android.util.Log
 import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.service.model.*
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.relays.Client
@@ -12,7 +13,6 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
-import java.util.Date
 import java.util.UUID
 import kotlin.Error
 
@@ -57,7 +57,7 @@ abstract class NostrDataSource(val debugName: String) {
 
             if (type == Relay.Type.EOSE && channel != null) {
                 // updates a per subscripton since date
-                subscriptions[channel]?.updateEOSE(Date().time / 1000, relay.url)
+                subscriptions[channel]?.updateEOSE(TimeUtils.now(), relay.url)
             }
         }
 

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

@@ -0,0 +1,148 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
+import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
+import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
+import com.vitorpamplona.amethyst.service.model.CommunityDefinitionEvent
+import com.vitorpamplona.amethyst.service.model.CommunityPostApprovalEvent
+import com.vitorpamplona.amethyst.service.model.LiveActivitiesChatMessageEvent
+import com.vitorpamplona.amethyst.service.model.LiveActivitiesEvent
+import com.vitorpamplona.amethyst.service.relays.EOSEAccount
+import com.vitorpamplona.amethyst.service.relays.FeedType
+import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.TypedFilter
+
+object NostrDiscoveryDataSource : NostrDataSource("DiscoveryFeed") {
+    lateinit var account: Account
+
+    val latestEOSEs = EOSEAccount()
+    val dataSource = "Discovery"
+
+    fun createLiveStreamFilter(): TypedFilter {
+        val follows = account.selectedUsersFollowList(account.defaultDiscoveryFollowList)
+
+        val followKeys = follows?.map {
+            it.substring(0, 6)
+        }
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                authors = followKeys,
+                kinds = listOf(LiveActivitiesChatMessageEvent.kind, LiveActivitiesEvent.kind),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    fun createPublicChatFilter(): TypedFilter {
+        val follows = account.selectedUsersFollowList(account.defaultDiscoveryFollowList)
+
+        val followKeys = follows?.map {
+            it.substring(0, 6)
+        }
+
+        return TypedFilter(
+            types = setOf(FeedType.PUBLIC_CHATS),
+            filter = JsonFilter(
+                authors = followKeys,
+                kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind, ChannelMessageEvent.kind),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    fun createCommunitiesFilter(): TypedFilter {
+        val follows = account.selectedUsersFollowList(account.defaultDiscoveryFollowList)
+
+        val followKeys = follows?.map {
+            it.substring(0, 6)
+        }
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                authors = followKeys,
+                kinds = listOf(CommunityDefinitionEvent.kind, CommunityPostApprovalEvent.kind),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    fun createLiveStreamTagsFilter(): TypedFilter? {
+        val hashToLoad = account.selectedTagsFollowList(account.defaultDiscoveryFollowList)
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(LiveActivitiesChatMessageEvent.kind, LiveActivitiesEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    fun createPublicChatsTagsFilter(): TypedFilter? {
+        val hashToLoad = account.selectedTagsFollowList(account.defaultDiscoveryFollowList)
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.PUBLIC_CHATS),
+            filter = JsonFilter(
+                kinds = listOf(ChannelCreateEvent.kind, ChannelMetadataEvent.kind, ChannelMessageEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    fun createCommunitiesTagsFilter(): TypedFilter? {
+        val hashToLoad = account.selectedTagsFollowList(account.defaultDiscoveryFollowList)
+
+        if (hashToLoad.isNullOrEmpty()) return null
+
+        return TypedFilter(
+            types = setOf(FeedType.GLOBAL),
+            filter = JsonFilter(
+                kinds = listOf(CommunityDefinitionEvent.kind, CommunityPostApprovalEvent.kind),
+                tags = mapOf(
+                    "t" to hashToLoad.map {
+                        listOf(it, it.lowercase(), it.uppercase(), it.capitalize())
+                    }.flatten()
+                ),
+                limit = 300,
+                since = latestEOSEs.users[account.userProfile()]?.followList?.get(dataSource)?.relayList
+            )
+        )
+    }
+
+    val discoveryFeedChannel = requestNewChannel()
+
+    override fun updateChannelFilters() {
+        discoveryFeedChannel.typedFilters = listOfNotNull(
+            createLiveStreamFilter(),
+            createPublicChatFilter(),
+            createCommunitiesFilter(),
+            createLiveStreamTagsFilter(),
+            createPublicChatsTagsFilter(),
+            createCommunitiesTagsFilter()
+        ).ifEmpty { null }
+    }
+}

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

@@ -1,28 +0,0 @@
-package com.vitorpamplona.amethyst.service
-
-import com.vitorpamplona.amethyst.service.model.AudioTrackEvent
-import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
-import com.vitorpamplona.amethyst.service.model.HighlightEvent
-import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
-import com.vitorpamplona.amethyst.service.model.PinListEvent
-import com.vitorpamplona.amethyst.service.model.PollNoteEvent
-import com.vitorpamplona.amethyst.service.model.TextNoteEvent
-import com.vitorpamplona.amethyst.service.relays.FeedType
-import com.vitorpamplona.amethyst.service.relays.JsonFilter
-import com.vitorpamplona.amethyst.service.relays.TypedFilter
-
-object NostrGlobalDataSource : NostrDataSource("GlobalFeed") {
-    fun createGlobalFilter() = TypedFilter(
-        types = setOf(FeedType.GLOBAL),
-        filter = JsonFilter(
-            kinds = listOf(TextNoteEvent.kind, PollNoteEvent.kind, ChannelMessageEvent.kind, AudioTrackEvent.kind, PinListEvent.kind, LongTextNoteEvent.kind, HighlightEvent.kind),
-            limit = 200
-        )
-    )
-
-    val globalFeedChannel = requestNewChannel()
-
-    override fun updateChannelFilters() {
-        globalFeedChannel.typedFilters = listOf(createGlobalFilter()).ifEmpty { null }
-    }
-}

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

@@ -51,13 +51,13 @@ object NostrHomeDataSource : NostrDataSource("HomeFeed") {
     }
 
     fun createFollowAccountsFilter(): TypedFilter {
-        val follows = account.selectedUsersFollowList(account.defaultHomeFollowList) ?: emptySet()
+        val follows = account.selectedUsersFollowList(account.defaultHomeFollowList)
 
-        val followKeys = follows.map {
+        val followKeys = follows?.map {
             it.substring(0, 6)
         }
 
-        val followSet = followKeys.plus(account.userProfile().pubkeyHex.substring(0, 6))
+        val followSet = followKeys?.plus(account.userProfile().pubkeyHex.substring(0, 6))
 
         return TypedFilter(
             types = setOf(FeedType.FOLLOWS),

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

@@ -71,7 +71,7 @@ object NostrSingleChannelDataSource : NostrDataSource("SingleChannelFeed") {
                     filter = JsonFilter(
                         kinds = listOf(aTag.kind),
                         tags = mapOf("d" to listOf(aTag.dTag)),
-                        authors = listOf(aTag.pubKeyHex.substring(0, 8))
+                        authors = listOf(aTag.pubKeyHex)
                     )
                 )
             }

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

@@ -33,7 +33,8 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
                             PeopleListEvent.kind, BookmarkListEvent.kind
                         ),
                         tags = mapOf("a" to listOf(aTag.toTag())),
-                        since = it.lastReactionsDownloadTime
+                        since = it.lastReactionsDownloadTime,
+                        limit = 1000 // Max amount of "replies" to download on a specific event.
                     )
                 )
             }
@@ -49,14 +50,24 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
 
         return addressesToWatch.mapNotNull {
             it.address()?.let { aTag ->
-                TypedFilter(
-                    types = COMMON_FEED_TYPES,
-                    filter = JsonFilter(
-                        kinds = listOf(aTag.kind),
-                        tags = mapOf("d" to listOf(aTag.dTag)),
-                        authors = listOf(aTag.pubKeyHex.substring(0, 8))
+                if (aTag.kind < 25000 && aTag.dTag.isBlank()) {
+                    TypedFilter(
+                        types = COMMON_FEED_TYPES,
+                        filter = JsonFilter(
+                            kinds = listOf(aTag.kind),
+                            authors = listOf(aTag.pubKeyHex)
+                        )
                     )
-                )
+                } else {
+                    TypedFilter(
+                        types = COMMON_FEED_TYPES,
+                        filter = JsonFilter(
+                            kinds = listOf(aTag.kind),
+                            tags = mapOf("d" to listOf(aTag.dTag)),
+                            authors = listOf(aTag.pubKeyHex)
+                        )
+                    )
+                }
             }
         }
     }
@@ -87,7 +98,8 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
                         PinListEvent.kind
                     ),
                     tags = mapOf("e" to listOf(it.idHex)),
-                    since = it.lastReactionsDownloadTime
+                    since = it.lastReactionsDownloadTime,
+                    limit = 1000 // Max amount of "replies" to download on a specific event.
                 )
             )
         }
@@ -122,6 +134,8 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
     }
 
     val singleEventChannel = requestNewChannel { time, relayUrl ->
+        checkNotInMainThread()
+
         eventsToWatch.forEach {
             val eose = it.lastReactionsDownloadTime[relayUrl]
             if (eose == null) {
@@ -159,16 +173,16 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
         }
     }
 
-    fun addAddress(aTag: Note) {
-        if (!addressesToWatch.contains(aTag)) {
-            addressesToWatch = addressesToWatch.plus(aTag)
+    fun addAddress(addressableNote: Note) {
+        if (!addressesToWatch.contains(addressableNote)) {
+            addressesToWatch = addressesToWatch.plus(addressableNote)
             invalidateFilters()
         }
     }
 
-    fun removeAddress(aTag: Note) {
-        if (addressesToWatch.contains(aTag)) {
-            addressesToWatch = addressesToWatch.minus(aTag)
+    fun removeAddress(addressableNote: Note) {
+        if (addressesToWatch.contains(addressableNote)) {
+            addressesToWatch = addressesToWatch.minus(addressableNote)
             invalidateFilters()
         }
     }

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

@@ -0,0 +1,40 @@
+package com.vitorpamplona.amethyst.service
+
+import android.util.Log
+import android.util.LruCache
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.BuildConfig
+import okhttp3.Request
+
+@Immutable
+data class OnlineCheckResult(val timeInMs: Long, val online: Boolean)
+
+object OnlineChecker {
+    val checkOnlineCache = LruCache<String, OnlineCheckResult>(100)
+    val fiveMinutes = 1000 * 60 * 5
+
+    fun isOnline(url: String?): Boolean {
+        checkNotInMainThread()
+
+        if (url.isNullOrBlank()) return false
+        if ((checkOnlineCache.get(url)?.timeInMs ?: 0) > System.currentTimeMillis() - fiveMinutes) {
+            return checkOnlineCache.get(url).online
+        }
+
+        return try {
+            val request = Request.Builder()
+                .header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
+                .url(url)
+                .get()
+                .build()
+
+            val result = HttpClient.getHttpClient().newCall(request).execute().code == 200
+            checkOnlineCache.put(url, OnlineCheckResult(System.currentTimeMillis(), result))
+            result
+        } catch (e: Exception) {
+            checkOnlineCache.put(url, OnlineCheckResult(System.currentTimeMillis(), false))
+            Log.e("LiveActivities", "Failed to check streaming url $url", e)
+            false
+        }
+    }
+}

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

@@ -1,10 +1,13 @@
 package com.vitorpamplona.amethyst.service
 
+import com.vitorpamplona.amethyst.ui.actions.ImmutableListOfLists
+
 fun String.isUTF16Char(pos: Int): Boolean {
+    println("Test $pos ${Character.charCount(this.codePointAt(pos))}")
     return Character.charCount(this.codePointAt(pos)) == 2
 }
 
-fun String.firstFullChar(): String {
+fun String.firstFullCharOld(): String {
     return when (this.length) {
         0, 1 -> return this
         2, 3 -> return if (isUTF16Char(0)) this.take(2) else this.take(1)
@@ -21,3 +24,78 @@ fun String.firstFullChar(): String {
         }
     }
 }
+
+fun String.firstFullChar(): String {
+    var isInJoin = false
+    var start = 0
+    var previousCharLength = 0
+    var next: Int
+    var codePoint: Int
+
+    var i = 0
+
+    while (i < this.length) {
+        codePoint = codePointAt(i)
+
+        // Skips if it starts with the join char 0x200D
+        if (codePoint == 0x200D && previousCharLength == 0) {
+            next = offsetByCodePoints(i, 1)
+            start = next
+        } else {
+            // If join, searches for the next char
+            if (codePoint == 0xFE0F) {
+            } else if (codePoint == 0x200D) {
+                isInJoin = true
+            } else {
+                // stops when two chars are not joined together
+                if ((previousCharLength > 0) && (!isInJoin) && Character.charCount(codePoint) == 1) {
+                    break
+                }
+
+                isInJoin = false
+            }
+
+            // next char to evaluate
+            next = offsetByCodePoints(i, 1)
+            previousCharLength += (next - i)
+        }
+
+        i = next
+    }
+
+    // if ends in join, then seachers backwards until a char is found.
+    if (isInJoin) {
+        i = previousCharLength - 1
+        while (i > 0) {
+            if (this[i].code == 0x200D) {
+                previousCharLength -= 1
+            } else {
+                break
+            }
+
+            i -= 1
+        }
+    }
+
+    return substring(start, start + previousCharLength)
+}
+
+fun String.firstFullCharOrEmoji(tags: ImmutableListOfLists<String>): String {
+    if (length <= 2) {
+        return firstFullChar()
+    }
+
+    if (this[0] == ':') {
+        // makes sure an emoji exists
+        val emojiParts = this.split(":", limit = 3)
+        if (emojiParts.size >= 2) {
+            val emojiName = emojiParts[1]
+            val emojiUrl = tags.lists.firstOrNull() { it.size > 1 && it[1] == emojiName }?.getOrNull(2)
+            if (emojiUrl != null) {
+                return ":$emojiName:$emojiUrl"
+            }
+        }
+    }
+
+    return firstFullChar()
+}

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

@@ -176,7 +176,7 @@ class LightningAddressResolver() {
                                 null
                             }
 
-                            lnInvoice?.get("pr")?.asText()?.let { pr ->
+                            lnInvoice?.get("pr")?.asText()?.ifBlank { null }?.let { pr ->
                                 // Forces LN Invoice amount to be the requested amount.
                                 val invoiceAmount = LnInvoiceUtil.getAmountInSats(pr)
                                 if (invoiceAmount.multiply(BigDecimal(1000)).toLong() == BigDecimal(milliSats).toLong()) {

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

@@ -103,7 +103,7 @@ object LnInvoiceUtil {
         try {
             decodeUnlimitedLength(invoice) // checksum must match
         } catch (e: AddressFormatException) {
-            throw IllegalArgumentException("Cannot decode invoice", e)
+            throw IllegalArgumentException("Cannot decode invoice: $invoice", e)
         }
 
         val matcher = invoicePattern.matcher(invoice)

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class AudioTrackEvent(
@@ -42,7 +42,7 @@ class AudioTrackEvent(
             cover: String? = null,
             subject: String? = null,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): AudioTrackEvent {
             val tags = listOfNotNull(
                 listOf(MEDIA, media),

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

@@ -113,7 +113,7 @@ open class BaseTextNoteEvent(
 
     fun tagsWithoutCitations(): List<String> {
         val repliesTo = replyTos()
-        val tagAddresses = taggedAddresses().map { it.toTag() }
+        val tagAddresses = taggedAddresses().filter { it.kind != CommunityDefinitionEvent.kind }.map { it.toTag() }
         if (repliesTo.isEmpty() && tagAddresses.isEmpty()) return emptyList()
 
         val citations = findCitations()

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class BookmarkListEvent(
@@ -30,7 +30,7 @@ class BookmarkListEvent(
             privAddresses: List<ATag>? = null,
 
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): BookmarkListEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
             val content = createPrivateTags(privEvents, privUsers, privAddresses, privateKey, pubKey)

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

@@ -3,9 +3,9 @@ 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.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ChannelCreateEvent(
@@ -26,7 +26,7 @@ class ChannelCreateEvent(
     companion object {
         const val kind = 40
 
-        fun create(channelInfo: ChannelData?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelCreateEvent {
+        fun create(channelInfo: ChannelData?, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ChannelCreateEvent {
             val content = try {
                 if (channelInfo != null) {
                     gson.toJson(channelInfo)

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ChannelHideMessageEvent(
@@ -14,13 +14,19 @@ class ChannelHideMessageEvent(
     tags: List<List<String>>,
     content: String,
     sig: HexKey
-) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+) : Event(id, pubKey, createdAt, kind, tags, content, sig), IsInPublicChatChannel {
+    override 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)
+
     fun eventsToHide() = tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
 
     companion object {
         const val kind = 43
 
-        fun create(reason: String, messagesToHide: List<String>?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelHideMessageEvent {
+        fun create(reason: String, messagesToHide: List<String>?, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ChannelHideMessageEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags =
                 messagesToHide?.map {

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ChannelMessageEvent(
@@ -14,9 +14,9 @@ class ChannelMessageEvent(
     tags: List<List<String>>,
     content: String,
     sig: HexKey
-) : BaseTextNoteEvent(id, pubKey, createdAt, kind, tags, content, sig) {
+) : BaseTextNoteEvent(id, pubKey, createdAt, kind, tags, content, sig), IsInPublicChatChannel {
 
-    fun channel() = tags.firstOrNull {
+    override fun channel() = tags.firstOrNull {
         it.size > 3 && it[0] == "e" && it[3] == "root"
     }?.get(1) ?: tags.firstOrNull {
         it.size > 1 && it[0] == "e"
@@ -34,7 +34,7 @@ class ChannelMessageEvent(
             mentions: List<String>? = null,
             zapReceiver: String?,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000,
+            createdAt: Long = TimeUtils.now(),
             markAsSensitive: Boolean,
             zapRaiserAmount: Long?
         ): ChannelMessageEvent {
@@ -65,3 +65,7 @@ class ChannelMessageEvent(
         }
     }
 }
+
+interface IsInPublicChatChannel {
+    open fun channel(): String?
+}

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

@@ -3,9 +3,9 @@ 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.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ChannelMetadataEvent(
@@ -15,8 +15,9 @@ class ChannelMetadataEvent(
     tags: List<List<String>>,
     content: String,
     sig: HexKey
-) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
-    fun channel() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
+) : Event(id, pubKey, createdAt, kind, tags, content, sig), IsInPublicChatChannel {
+
+    override fun channel() = tags.firstOrNull { it.size > 1 && it[0] == "e" }?.get(1)
     fun channelInfo() =
         try {
             MetadataEvent.gson.fromJson(content, ChannelCreateEvent.ChannelData::class.java)
@@ -28,7 +29,7 @@ class ChannelMetadataEvent(
     companion object {
         const val kind = 41
 
-        fun create(newChannelInfo: ChannelCreateEvent.ChannelData?, originalChannelIdHex: String, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelMetadataEvent {
+        fun create(newChannelInfo: ChannelCreateEvent.ChannelData?, originalChannelIdHex: String, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ChannelMetadataEvent {
             val content =
                 if (newChannelInfo != null) {
                     gson.toJson(newChannelInfo)

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ChannelMuteUserEvent(
@@ -14,14 +14,19 @@ class ChannelMuteUserEvent(
     tags: List<List<String>>,
     content: String,
     sig: HexKey
-) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+) : Event(id, pubKey, createdAt, kind, tags, content, sig), IsInPublicChatChannel {
+    override 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)
 
     fun usersToMute() = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
 
     companion object {
         const val kind = 44
 
-        fun create(reason: String, usersToMute: List<String>?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ChannelMuteUserEvent {
+        fun create(reason: String, usersToMute: List<String>?, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ChannelMuteUserEvent {
             val content = reason
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags =

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

@@ -0,0 +1,42 @@
+package com.vitorpamplona.amethyst.service.model
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+
+@Immutable
+class CommunityDefinitionEvent(
+    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 description() = tags.firstOrNull { it.size > 1 && it[0] == "description" }?.get(1)
+    fun image() = tags.firstOrNull { it.size > 1 && it[0] == "image" }?.get(1)
+    fun rules() = tags.firstOrNull { it.size > 1 && it[0] == "rules" }?.get(1)
+
+    fun moderators() = tags.filter { it.size > 1 && it[0] == "p" }.map { Participant(it[1], it.getOrNull(3)) }
+
+    companion object {
+        const val kind = 34550
+
+        fun create(
+            privateKey: ByteArray,
+            createdAt: Long = TimeUtils.now()
+        ): CommunityDefinitionEvent {
+            val tags = mutableListOf<List<String>>()
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val id = generateId(pubKey, createdAt, kind, tags, "")
+            val sig = Utils.sign(id, privateKey)
+            return CommunityDefinitionEvent(id.toHexKey(), pubKey, createdAt, tags, "", sig.toHexKey())
+        }
+    }
+}

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

@@ -0,0 +1,63 @@
+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.TimeUtils
+import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.service.relays.Client
+import nostr.postr.Utils
+
+@Immutable
+class CommunityPostApprovalEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
+    fun containedPost(): Event? = try {
+        content.ifBlank { null }?.let {
+            fromJson(it, Client.lenient)
+        }
+    } catch (e: Exception) {
+        Log.w("CommunityPostEvent", "Failed to Parse Community Approval Contained Post of $id with $content")
+        null
+    }
+
+    fun communities() = tags.filter { it.size > 1 && it[0] == "a" }.mapNotNull {
+        val aTag = ATag.parse(it[1], it.getOrNull(2))
+
+        if (aTag?.kind == CommunityDefinitionEvent.kind) {
+            aTag
+        } else {
+            null
+        }
+    }
+
+    fun approvedEvents() = tags.filter {
+        it.size > 1 && (it[0] == "e" || (it[0] == "a" && ATag.parse(it[1], null)?.kind != CommunityDefinitionEvent.kind))
+    }.map {
+        it[1]
+    }
+
+    companion object {
+        const val kind = 4550
+
+        fun create(approvedPost: Event, community: CommunityDefinitionEvent, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): GenericRepostEvent {
+            val content = approvedPost.toJson()
+
+            val communities = listOf("a", community.address().toTag())
+            val replyToPost = listOf("e", approvedPost.id())
+            val replyToAuthor = listOf("p", approvedPost.pubKey())
+            val kind = listOf("k", "${approvedPost.kind()}")
+
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val tags: List<List<String>> = listOf(communities, replyToPost, replyToAuthor, kind)
+            val id = generateId(pubKey, createdAt, GenericRepostEvent.kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return GenericRepostEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}

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

@@ -5,10 +5,10 @@ import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.Stable
 import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.decodePublicKey
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 data class Contact(val pubKeyHex: String, val relayUri: String?)
@@ -73,7 +73,7 @@ class ContactListEvent(
     companion object {
         const val kind = 3
 
-        fun create(follows: List<Contact>, followTags: List<String>, relayUse: Map<String, ReadWrite>?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ContactListEvent {
+        fun create(follows: List<Contact>, followTags: List<String>, relayUse: Map<String, ReadWrite>?, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ContactListEvent {
             val content = if (relayUse != null) {
                 gson.toJson(relayUse)
             } else {

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class DeletionEvent(
@@ -20,7 +20,7 @@ class DeletionEvent(
     companion object {
         const val kind = 5
 
-        fun create(deleteEvents: List<String>, privateKey: ByteArray, createdAt: Long = Date().time / 1000): DeletionEvent {
+        fun create(deleteEvents: List<String>, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): DeletionEvent {
             val content = ""
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = deleteEvents.map { listOf("e", it) }

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

@@ -0,0 +1,56 @@
+package com.vitorpamplona.amethyst.service.model
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+
+@Immutable
+class EmojiPackEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: List<List<String>>,
+    content: String,
+    sig: HexKey
+) : GeneralListEvent(id, pubKey, createdAt, kind, tags, content, sig) {
+
+    companion object {
+        const val kind = 30030
+
+        fun create(
+            name: String = "",
+            privateKey: ByteArray,
+            createdAt: Long = TimeUtils.now()
+        ): EmojiPackEvent {
+            val content = ""
+            val pubKey = Utils.pubkeyCreate(privateKey)
+
+            val tags = mutableListOf<List<String>>()
+            tags.add(listOf("d", name))
+
+            val id = generateId(pubKey.toHexKey(), createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return EmojiPackEvent(id.toHexKey(), pubKey.toHexKey(), createdAt, tags, content, sig.toHexKey())
+        }
+    }
+}
+
+@Immutable
+data class EmojiUrl(val code: String, val url: String) {
+    fun encode(): String {
+        return ":$code:$url"
+    }
+
+    companion object {
+        fun decode(encodedEmojiSetup: String): EmojiUrl? {
+            val emojiParts = encodedEmojiSetup.split(":", limit = 3)
+            return if (emojiParts.size > 2) {
+                EmojiUrl(emojiParts[1], emojiParts[2])
+            } else {
+                null
+            }
+        }
+    }
+}

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

@@ -0,0 +1,43 @@
+package com.vitorpamplona.amethyst.service.model
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
+import com.vitorpamplona.amethyst.model.toHexKey
+import nostr.postr.Utils
+
+@Immutable
+class EmojiPackSelectionEvent(
+    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() = ""
+    override fun address() = ATag(kind, pubKey, dTag(), null)
+
+    companion object {
+        const val kind = 10030
+
+        fun create(
+            listOfEmojiPacks: List<ATag>?,
+            privateKey: ByteArray,
+            createdAt: Long = TimeUtils.now()
+        ): EmojiPackSelectionEvent {
+            val msg = ""
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+            val tags = mutableListOf<List<String>>()
+
+            listOfEmojiPacks?.forEach {
+                tags.add(listOf("a", it.toTag()))
+            }
+
+            val id = generateId(pubKey, createdAt, kind, tags, msg)
+            val sig = Utils.sign(id, privateKey)
+            return EmojiPackSelectionEvent(id.toHexKey(), pubKey, createdAt, tags, msg, sig.toHexKey())
+        }
+    }
+}

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

@@ -5,6 +5,7 @@ import androidx.compose.runtime.Immutable
 import com.google.gson.*
 import com.google.gson.annotations.SerializedName
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import fr.acinq.secp256k1.Hex
 import fr.acinq.secp256k1.Secp256k1
@@ -48,6 +49,8 @@ open class Event(
 
     fun taggedUrls() = tags.filter { it.size > 1 && it[0] == "r" }.map { it[1] }
 
+    override fun taggedEmojis() = tags.filter { it.size > 2 && it[0] == "emoji" }.map { EmojiUrl(it[1], it[2]) }
+
     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)) ||
@@ -55,7 +58,7 @@ open class Event(
     }
 
     override fun zapraiserAmount() = tags.firstOrNull() {
-        (it.size > 1 && it[0].equals("zapraiser", true))
+        (it.size > 1 && it[0] == "zapraiser")
     }?.get(1)?.toLongOrNull()
 
     override fun zapAddress() = tags.firstOrNull { it.size > 1 && it[0] == "zap" }?.get(1)
@@ -69,12 +72,33 @@ open class Event(
 
     override fun hashtags() = tags.filter { it.size > 1 && it[0] == "t" }.map { it[1] }
 
+    override fun matchTag1With(text: String) = tags.any { it.size > 1 && it[1].contains(text, true) }
+
     override fun isTaggedUser(idHex: String) = tags.any { it.size > 1 && it[0] == "p" && it[1] == idHex }
 
+    override fun isTaggedAddressableNote(idHex: String) = tags.any { it.size > 1 && it[0] == "a" && it[1] == idHex }
+
     override fun isTaggedHash(hashtag: String) = tags.any { it.size > 1 && it[0] == "t" && it[1].equals(hashtag, true) }
     override fun isTaggedHashes(hashtags: Set<String>) = tags.any { it.size > 1 && it[0] == "t" && it[1].lowercase() in hashtags }
     override fun firstIsTaggedHashes(hashtags: Set<String>) = tags.firstOrNull { it.size > 1 && it[0] == "t" && it[1].lowercase() in hashtags }?.getOrNull(1)
 
+    override fun firstIsTaggedAddressableNote(addressableNotes: Set<String>) = tags.firstOrNull { it.size > 1 && it[0] == "a" && it[1] in addressableNotes }?.getOrNull(1)
+
+    override fun isTaggedAddressableKind(kind: Int): Boolean {
+        val kindStr = kind.toString()
+        return tags.any { it.size > 1 && it[0] == "a" && it[1].startsWith(kindStr) }
+    }
+
+    override fun getTagOfAddressableKind(kind: Int): ATag? {
+        val kindStr = kind.toString()
+        val aTag = tags
+            .firstOrNull { it.size > 1 && it[0] == "a" && it[1].startsWith(kindStr) }
+            ?.getOrNull(1)
+            ?: return null
+
+        return ATag.parse(aTag, null)
+    }
+
     override fun getPoWRank(): Int {
         var rank = 0
         for (i in 0..id.length) {
@@ -243,8 +267,12 @@ open class Event(
             ChannelMessageEvent.kind -> ChannelMessageEvent(id, pubKey, createdAt, tags, content, sig)
             ChannelMetadataEvent.kind -> ChannelMetadataEvent(id, pubKey, createdAt, tags, content, sig)
             ChannelMuteUserEvent.kind -> ChannelMuteUserEvent(id, pubKey, createdAt, tags, content, sig)
+            CommunityDefinitionEvent.kind -> CommunityDefinitionEvent(id, pubKey, createdAt, tags, content, sig)
+            CommunityPostApprovalEvent.kind -> CommunityPostApprovalEvent(id, pubKey, createdAt, tags, content, sig)
             ContactListEvent.kind -> ContactListEvent(id, pubKey, createdAt, tags, content, sig)
             DeletionEvent.kind -> DeletionEvent(id, pubKey, createdAt, tags, content, sig)
+            EmojiPackEvent.kind -> EmojiPackEvent(id, pubKey, createdAt, tags, content, sig)
+            EmojiPackSelectionEvent.kind -> EmojiPackSelectionEvent(id, pubKey, createdAt, tags, content, sig)
 
             FileHeaderEvent.kind -> FileHeaderEvent(id, pubKey, createdAt, tags, content, sig)
             FileStorageEvent.kind -> FileStorageEvent(id, pubKey, createdAt, tags, content, sig)
@@ -293,7 +321,7 @@ open class Event(
             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 {
+        fun create(privateKey: ByteArray, kind: Int, tags: List<List<String>> = emptyList(), content: String = "", createdAt: Long = TimeUtils.now()): Event {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val id = Companion.generateId(pubKey, createdAt, kind, tags, content)
             val sig = Utils.sign(id, privateKey).toHexKey()

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

@@ -27,10 +27,16 @@ interface EventInterface {
     fun hasValidSignature(): Boolean
 
     fun isTaggedUser(idHex: String): Boolean
+    fun isTaggedAddressableNote(idHex: String): Boolean
 
     fun isTaggedHash(hashtag: String): Boolean
     fun isTaggedHashes(hashtags: Set<String>): Boolean
     fun firstIsTaggedHashes(hashtags: Set<String>): String?
+    fun firstIsTaggedAddressableNote(addressableNotes: Set<String>): String?
+
+    fun isTaggedAddressableKind(kind: Int): Boolean
+    fun getTagOfAddressableKind(kind: Int): ATag?
+
     fun hashtags(): List<String>
 
     fun getReward(): BigDecimal?
@@ -39,4 +45,7 @@ interface EventInterface {
     fun zapAddress(): String?
     fun isSensitive(): Boolean
     fun zapraiserAmount(): Long?
+
+    fun taggedEmojis(): List<EmojiUrl>
+    fun matchTag1With(text: String): Boolean
 }

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class FileHeaderEvent(
@@ -50,8 +50,9 @@ class FileHeaderEvent(
             magnetURI: String? = null,
             torrentInfoHash: String? = null,
             encryptionKey: AESGCM? = null,
+            sensitiveContent: Boolean? = null,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): FileHeaderEvent {
             val tags = listOfNotNull(
                 listOf(URL, url),
@@ -62,7 +63,14 @@ class FileHeaderEvent(
                 blurhash?.let { listOf(BLUR_HASH, it) },
                 magnetURI?.let { listOf(MAGNET_URI, it) },
                 torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
-                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) }
+                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) },
+                sensitiveContent?.let {
+                    if (it) {
+                        listOf("content-warning", "")
+                    } else {
+                        null
+                    }
+                }
             )
 
             val content = description ?: ""

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

@@ -3,10 +3,10 @@ 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.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.util.Base64
-import java.util.Date
 
 @Immutable
 class FileStorageEvent(
@@ -44,7 +44,7 @@ class FileStorageEvent(
             mimeType: String,
             data: ByteArray,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): FileStorageEvent {
             val tags = listOfNotNull(
                 listOf(TYPE, mimeType)

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class FileStorageHeaderEvent(
@@ -50,8 +50,9 @@ class FileStorageHeaderEvent(
             magnetURI: String? = null,
             torrentInfoHash: String? = null,
             encryptionKey: AESGCM? = null,
+            sensitiveContent: Boolean? = null,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): FileStorageHeaderEvent {
             val tags = listOfNotNull(
                 listOf("e", storageEvent.id),
@@ -62,7 +63,14 @@ class FileStorageHeaderEvent(
                 blurhash?.let { listOf(BLUR_HASH, it) },
                 magnetURI?.let { listOf(MAGNET_URI, it) },
                 torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
-                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) }
+                encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) },
+                sensitiveContent?.let {
+                    if (it) {
+                        listOf("content-warning", "")
+                    } else {
+                        null
+                    }
+                }
             )
 
             val content = description ?: ""

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

@@ -2,10 +2,10 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import com.vitorpamplona.amethyst.service.relays.Client
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class GenericRepostEvent(
@@ -29,7 +29,7 @@ class GenericRepostEvent(
     companion object {
         const val kind = 16
 
-        fun create(boostedPost: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): GenericRepostEvent {
+        fun create(boostedPost: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): GenericRepostEvent {
             val content = boostedPost.toJson()
 
             val replyToPost = listOf("e", boostedPost.id())

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

@@ -2,10 +2,10 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.security.MessageDigest
-import java.util.Date
 
 @Immutable
 class HTTPAuthorizationEvent(
@@ -25,7 +25,7 @@ class HTTPAuthorizationEvent(
             method: String,
             body: String? = null,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): HTTPAuthorizationEvent {
             val sha256 = MessageDigest.getInstance("SHA-256")
 

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class HighlightEvent(
@@ -26,7 +26,7 @@ class HighlightEvent(
         fun create(
             msg: String,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): PollNoteEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class LiveActivitiesChatMessageEvent(
@@ -49,7 +49,7 @@ class LiveActivitiesChatMessageEvent(
             mentions: List<String>? = null,
             zapReceiver: String?,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000,
+            createdAt: Long = TimeUtils.now(),
             markAsSensitive: Boolean,
             zapRaiserAmount: Long?
         ): LiveActivitiesChatMessageEvent {

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class LiveActivitiesEvent(
@@ -23,20 +23,32 @@ class LiveActivitiesEvent(
     fun summary() = tags.firstOrNull { it.size > 1 && it[0] == "summary" }?.get(1)
     fun image() = tags.firstOrNull { it.size > 1 && it[0] == "image" }?.get(1)
     fun streaming() = tags.firstOrNull { it.size > 1 && it[0] == "streaming" }?.get(1)
-    fun starts() = tags.firstOrNull { it.size > 1 && it[0] == "starts" }?.get(1)
+    fun starts() = tags.firstOrNull { it.size > 1 && it[0] == "starts" }?.get(1)?.toLongOrNull()
     fun ends() = tags.firstOrNull { it.size > 1 && it[0] == "ends" }?.get(1)
-    fun status() = tags.firstOrNull { it.size > 1 && it[0] == "status" }?.get(1)
+    fun status() = checkStatus(tags.firstOrNull { it.size > 1 && it[0] == "status" }?.get(1))
     fun currentParticipants() = tags.firstOrNull { it.size > 1 && it[0] == "current_participants" }?.get(1)
     fun totalParticipants() = tags.firstOrNull { it.size > 1 && it[0] == "total_participants" }?.get(1)
 
-    fun participants() = tags.filter { it.size > 1 && it[0] == "p" }.map { Participant(it[1], it.getOrNull(2)) }
+    fun participants() = tags.filter { it.size > 1 && it[0] == "p" }.map { Participant(it[1], it.getOrNull(3)) }
+
+    fun checkStatus(eventStatus: String?): String? {
+        return if (eventStatus == STATUS_LIVE && createdAt < TimeUtils.eightHoursAgo()) {
+            STATUS_ENDED
+        } else {
+            eventStatus
+        }
+    }
 
     companion object {
         const val kind = 30311
 
+        const val STATUS_LIVE = "live"
+        const val STATUS_PLANNED = "planned"
+        const val STATUS_ENDED = "ended"
+
         fun create(
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): LiveActivitiesEvent {
             val tags = mutableListOf<List<String>>()
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()

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

@@ -7,11 +7,11 @@ import com.google.gson.JsonDeserializer
 import com.google.gson.JsonElement
 import com.google.gson.JsonParseException
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.lang.reflect.Type
-import java.util.Date
 
 @Immutable
 class LnZapPaymentRequestEvent(
@@ -57,7 +57,7 @@ class LnZapPaymentRequestEvent(
             lnInvoice: String,
             walletServicePubkey: String,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): LnZapPaymentRequestEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
             val serializedRequest = gson.toJson(PayInvoiceMethod.create(lnInvoice))

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

@@ -64,7 +64,7 @@ class LnZapRequestEvent(
             pollOption: Int?,
             message: String,
             zapType: LnZapEvent.ZapType,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): LnZapRequestEvent {
             var content = message
             var privkey = privateKey
@@ -104,7 +104,7 @@ class LnZapRequestEvent(
             privateKey: ByteArray,
             message: String,
             zapType: LnZapEvent.ZapType,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): LnZapRequestEvent {
             var content = message
             var privkey = privateKey

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class LongTextNoteEvent(
@@ -32,7 +32,7 @@ class LongTextNoteEvent(
     companion object {
         const val kind = 30023
 
-        fun create(msg: String, replyTos: List<String>?, mentions: List<String>?, privateKey: ByteArray, createdAt: Long = Date().time / 1000): LongTextNoteEvent {
+        fun create(msg: String, replyTos: List<String>?, mentions: List<String>?, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): LongTextNoteEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()
             replyTos?.forEach {

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

@@ -7,11 +7,11 @@ 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.TimeUtils
 import com.vitorpamplona.amethyst.model.UserMetadata
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.io.ByteArrayInputStream
-import java.util.Date
 
 @Stable
 abstract class IdentityClaim(
@@ -171,7 +171,7 @@ class MetadataEvent(
                 .readerFor(UserMetadata::class.java)
         }
 
-        fun create(contactMetaData: String, identities: List<IdentityClaim>, privateKey: ByteArray, createdAt: Long = Date().time / 1000): MetadataEvent {
+        fun create(contactMetaData: String, identities: List<IdentityClaim>, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): MetadataEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()
 

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

@@ -4,10 +4,10 @@ import android.util.Log
 import androidx.compose.runtime.Immutable
 import com.google.gson.reflect.TypeToken
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.hexToByteArray
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class MuteListEvent(
@@ -71,7 +71,7 @@ class MuteListEvent(
             privAddresses: List<ATag>? = null,
 
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): MuteListEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
 

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class PeopleListEvent(
@@ -30,7 +30,7 @@ class PeopleListEvent(
             privAddresses: List<ATag>? = null,
 
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): PeopleListEvent {
             val pubKey = Utils.pubkeyCreate(privateKey)
             val content = createPrivateTags(privEvents, privUsers, privAddresses, privateKey, pubKey)

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class PinListEvent(
@@ -27,7 +27,7 @@ class PinListEvent(
         fun create(
             pins: List<String>,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): PinListEvent {
             val tags = mutableListOf<List<String>>()
             pins.forEach {

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 const val POLL_OPTION = "poll_option"
 const val VALUE_MAXIMUM = "value_maximum"
@@ -45,7 +45,7 @@ class PollNoteEvent(
             mentions: List<String>?,
             addresses: List<ATag>?,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000,
+            createdAt: Long = TimeUtils.now(),
             pollOptions: Map<Int, String>,
             valueMaximum: Int?,
             valueMinimum: Int?,

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

@@ -3,11 +3,12 @@ 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.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
+import com.vitorpamplona.amethyst.service.HexValidator
 import fr.acinq.secp256k1.Hex
 import nostr.postr.Utils
 import nostr.postr.toHex
-import java.util.Date
 
 @Immutable
 class PrivateDmEvent(
@@ -23,11 +24,18 @@ class PrivateDmEvent(
      * nip-04 EncryptedDmEvent but may omit the recipient, too. This value can be queried and used
      * for initial messages.
      */
-    private fun recipientPubKey() = tags.firstOrNull { it.size > 1 && it[0] == "p" }
+    private fun recipientPubKey() = tags.firstOrNull { it.size > 1 && it[0] == "p" }?.get(1)
 
-    fun recipientPubKeyBytes() = recipientPubKey()?.runCatching { Hex.decode(this[1]) }?.getOrNull()
+    fun recipientPubKeyBytes() = recipientPubKey()?.runCatching { Hex.decode(this) }?.getOrNull()
 
-    fun verifiedRecipientPubKey() = recipientPubKey()?.runCatching { Hex.decode(this[1]).toHexKey() }?.getOrNull() // makes sure its a valid one
+    fun verifiedRecipientPubKey(): HexKey? {
+        val recipient = recipientPubKey()
+        return if (HexValidator.isHex(recipient)) {
+            recipient
+        } else {
+            null
+        }
+    }
 
     fun talkingWith(oneSideHex: String): HexKey {
         return if (pubKey == oneSideHex) verifiedRecipientPubKey() ?: pubKey else pubKey
@@ -75,7 +83,7 @@ class PrivateDmEvent(
             mentions: List<String>? = null,
             zapReceiver: String?,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000,
+            createdAt: Long = TimeUtils.now(),
             publishedRecipientPubKey: ByteArray? = null,
             advertiseNip18: Boolean = true,
             markAsSensitive: Boolean,

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class ReactionEvent(
@@ -22,15 +22,15 @@ class ReactionEvent(
     companion object {
         const val kind = 7
 
-        fun createWarning(originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ReactionEvent {
+        fun createWarning(originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ReactionEvent {
             return create("\u26A0\uFE0F", originalNote, privateKey, createdAt)
         }
 
-        fun createLike(originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ReactionEvent {
+        fun createLike(originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ReactionEvent {
             return create("+", originalNote, privateKey, createdAt)
         }
 
-        fun create(content: String, originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ReactionEvent {
+        fun create(content: String, originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ReactionEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
 
             var tags = listOf(listOf("e", originalNote.id()), listOf("p", originalNote.pubKey()))
@@ -42,5 +42,24 @@ class ReactionEvent(
             val sig = Utils.sign(id, privateKey)
             return ReactionEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
         }
+
+        fun create(emojiUrl: EmojiUrl, originalNote: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ReactionEvent {
+            val content = ":${emojiUrl.code}:"
+            val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
+
+            var tags = listOf(
+                listOf("e", originalNote.id()),
+                listOf("p", originalNote.pubKey()),
+                listOf("emoji", emojiUrl.code, emojiUrl.url)
+            )
+
+            if (originalNote is AddressableEvent) {
+                tags = tags + listOf(listOf("a", originalNote.address().toTag()))
+            }
+
+            val id = generateId(pubKey, createdAt, kind, tags, content)
+            val sig = Utils.sign(id, privateKey)
+            return ReactionEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
+        }
     }
 }

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

@@ -2,10 +2,10 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
 import java.net.URI
-import java.util.Date
 
 @Immutable
 class RecommendRelayEvent(
@@ -27,7 +27,7 @@ class RecommendRelayEvent(
     companion object {
         const val kind = 2
 
-        fun create(relay: URI, privateKey: ByteArray, createdAt: Long = Date().time / 1000): RecommendRelayEvent {
+        fun create(relay: URI, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): RecommendRelayEvent {
             val content = relay.toString()
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = listOf<List<String>>()

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class RelayAuthEvent(
@@ -21,7 +21,7 @@ class RelayAuthEvent(
     companion object {
         const val kind = 22242
 
-        fun create(relay: String, challenge: String, privateKey: ByteArray, createdAt: Long = Date().time / 1000): RelayAuthEvent {
+        fun create(relay: String, challenge: String, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): RelayAuthEvent {
             val content = ""
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = listOf(

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class RelaySetEvent(
@@ -28,7 +28,7 @@ class RelaySetEvent(
         fun create(
             relays: List<String>,
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): RelaySetEvent {
             val tags = mutableListOf<List<String>>()
             relays.forEach {

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

@@ -2,9 +2,9 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 data class ReportedKey(val key: String, val reportType: ReportEvent.ReportType)
@@ -58,7 +58,7 @@ class ReportEvent(
             type: ReportType,
             privateKey: ByteArray,
             content: String = "",
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): ReportEvent {
             val reportPostTag = listOf("e", reportedPost.id(), type.name.lowercase())
             val reportAuthorTag = listOf("p", reportedPost.pubKey(), type.name.lowercase())
@@ -75,7 +75,7 @@ class ReportEvent(
             return ReportEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
         }
 
-        fun create(reportedUser: String, type: ReportType, privateKey: ByteArray, createdAt: Long = Date().time / 1000): ReportEvent {
+        fun create(reportedUser: String, type: ReportType, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): ReportEvent {
             val content = ""
 
             val reportAuthorTag = listOf("p", reportedUser, type.name.lowercase())

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

@@ -2,10 +2,10 @@ package com.vitorpamplona.amethyst.service.model
 
 import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import com.vitorpamplona.amethyst.service.relays.Client
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class RepostEvent(
@@ -29,7 +29,7 @@ class RepostEvent(
     companion object {
         const val kind = 6
 
-        fun create(boostedPost: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): RepostEvent {
+        fun create(boostedPost: EventInterface, privateKey: ByteArray, createdAt: Long = TimeUtils.now()): RepostEvent {
             val content = boostedPost.toJson()
 
             val replyToPost = listOf("e", boostedPost.id())

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

@@ -4,10 +4,10 @@ import androidx.compose.runtime.Immutable
 import com.linkedin.urls.detection.UrlDetector
 import com.linkedin.urls.detection.UrlDetectorOptions
 import com.vitorpamplona.amethyst.model.HexKey
+import com.vitorpamplona.amethyst.model.TimeUtils
 import com.vitorpamplona.amethyst.model.toHexKey
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.findHashtags
 import nostr.postr.Utils
-import java.util.Date
 
 @Immutable
 class TextNoteEvent(
@@ -40,7 +40,7 @@ class TextNoteEvent(
             directMentions: Set<HexKey>,
 
             privateKey: ByteArray,
-            createdAt: Long = Date().time / 1000
+            createdAt: Long = TimeUtils.now()
         ): TextNoteEvent {
             val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
             val tags = mutableListOf<List<String>>()

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.model.TimeUtils
 import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.service.model.Event
 import com.vitorpamplona.amethyst.service.model.EventInterface
@@ -14,7 +15,6 @@ import okhttp3.WebSocket
 import okhttp3.WebSocketListener
 import java.net.Proxy
 import java.time.Duration
-import java.util.Date
 
 enum class FeedType {
     FOLLOWS, PUBLIC_CHATS, PRIVATE_DMS, GLOBAL, SEARCH, WALLET_CONNECT
@@ -179,7 +179,7 @@ class Relay(
                     socket = null
                     isReady = false
                     afterEOSE = false
-                    closingTime = Date().time / 1000
+                    closingTime = TimeUtils.now()
                     listeners.forEach { it.onRelayStateChange(this@Relay, Type.DISCONNECT, null) }
                 }
 
@@ -193,7 +193,7 @@ class Relay(
                     socket = null
                     isReady = false
                     afterEOSE = false
-                    closingTime = Date().time / 1000
+                    closingTime = TimeUtils.now()
 
                     Log.w("Relay", "Relay onFailure $url, ${response?.message} $response")
                     t.printStackTrace()
@@ -208,7 +208,7 @@ class Relay(
             errorCounter++
             isReady = false
             afterEOSE = false
-            closingTime = Date().time / 1000
+            closingTime = TimeUtils.now()
             Log.e("Relay", "Relay Invalid $url")
             e.printStackTrace()
         }
@@ -216,7 +216,7 @@ class Relay(
 
     fun disconnect() {
         // httpClient.dispatcher.executorService.shutdown()
-        closingTime = Date().time / 1000
+        closingTime = TimeUtils.now()
         socket?.close(1000, "Normal close")
         socket = null
         isReady = false
@@ -241,7 +241,7 @@ class Relay(
                 }
             } else {
                 // waits 60 seconds to reconnect after disconnected.
-                if (Date().time / 1000 > closingTime + 60) {
+                if (TimeUtils.now() > closingTime + 60) {
                     // sends all filters after connection is successful.
                     requestAndWatch()
                 }
@@ -254,7 +254,7 @@ class Relay(
 
         if (socket == null) {
             // waits 60 seconds to reconnect after disconnected.
-            if (Date().time / 1000 > closingTime + 60) {
+            if (TimeUtils.now() > closingTime + 60) {
                 // println("sendfilter Only if Disconnected ${url} ")
                 requestAndWatch()
             }

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

@@ -16,6 +16,7 @@ import androidx.compose.material.Surface
 import androidx.compose.ui.Modifier
 import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.ServiceManager
 import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
@@ -27,6 +28,7 @@ import com.vitorpamplona.amethyst.service.notifications.PushNotificationUtils
 import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.ui.components.DefaultMutedSetting
 import com.vitorpamplona.amethyst.ui.navigation.Route
+import com.vitorpamplona.amethyst.ui.navigation.debugState
 import com.vitorpamplona.amethyst.ui.note.Nip47
 import com.vitorpamplona.amethyst.ui.screen.AccountScreen
 import com.vitorpamplona.amethyst.ui.screen.AccountStateViewModel
@@ -39,6 +41,7 @@ import java.net.URLEncoder
 import java.nio.charset.StandardCharsets
 
 class MainActivity : FragmentActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -90,6 +93,10 @@ class MainActivity : FragmentActivity() {
     override fun onPause() {
         ServiceManager.pause()
 
+        if (BuildConfig.DEBUG) {
+            debugState(this)
+        }
+
         super.onPause()
     }
 

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

@@ -65,6 +65,7 @@ import com.vitorpamplona.amethyst.ui.note.ClickableUserPicture
 import com.vitorpamplona.amethyst.ui.note.UsernameDisplay
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.SearchBarViewModel
+import com.vitorpamplona.amethyst.ui.theme.Size55dp
 import com.vitorpamplona.amethyst.ui.theme.placeholderText
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.Channel
@@ -389,7 +390,7 @@ fun UserComposeForChat(
                 ),
             verticalAlignment = Alignment.CenterVertically
         ) {
-            ClickableUserPicture(baseUser, 55.dp, accountViewModel)
+            ClickableUserPicture(baseUser, Size55dp, accountViewModel)
 
             Column(
                 modifier = Modifier

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

@@ -26,6 +26,7 @@ open class NewMediaModel : ViewModel() {
 
     var selectedServer by mutableStateOf<ServersAvailable?>(null)
     var description by mutableStateOf("")
+    var sensitiveContent by mutableStateOf(false)
 
     // Images and Videos
     var galleryUri by mutableStateOf<Uri?>(null)
@@ -77,7 +78,7 @@ open class NewMediaModel : ViewModel() {
                         uploadingPercentage.value = 0.2f
                         uploadingDescription.value = "Loading"
                         contentResolver.openInputStream(fileUri)?.use {
-                            createNIP95Record(it.readBytes(), contentType, description)
+                            createNIP95Record(it.readBytes(), contentType, description, sensitiveContent)
                         }
                             ?: run {
                                 viewModelScope.launch {
@@ -97,7 +98,7 @@ open class NewMediaModel : ViewModel() {
                             server = serverToUse,
                             contentResolver = contentResolver,
                             onSuccess = { imageUrl, mimeType ->
-                                createNIP94Record(imageUrl, mimeType, description)
+                                createNIP94Record(imageUrl, mimeType, description, sensitiveContent)
                             },
                             onError = {
                                 isUploadingImage = false
@@ -137,7 +138,7 @@ open class NewMediaModel : ViewModel() {
         return !isUploadingImage && galleryUri != null && selectedServer != null
     }
 
-    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String) {
+    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String, sensitiveContent: Boolean) {
         uploadingPercentage.value = 0.40f
         viewModelScope.launch(Dispatchers.IO) {
             uploadingDescription.value = "Server Processing"
@@ -157,6 +158,7 @@ open class NewMediaModel : ViewModel() {
                     imageUrl,
                     mimeType,
                     description,
+                    sensitiveContent,
                     onReady = {
                         uploadingPercentage.value = 0.90f
                         uploadingDescription.value = "Sending"
@@ -189,7 +191,7 @@ open class NewMediaModel : ViewModel() {
         }
     }
 
-    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String) {
+    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String, sensitiveContent: Boolean) {
         uploadingPercentage.value = 0.30f
         uploadingDescription.value = "Hashing"
 
@@ -199,6 +201,7 @@ open class NewMediaModel : ViewModel() {
                 "",
                 mimeType,
                 description,
+                sensitiveContent,
                 onReady = {
                     uploadingDescription.value = "Signing"
                     uploadingPercentage.value = 0.40f

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

@@ -206,6 +206,18 @@ fun ImageVideoPost(postViewModel: NewMediaModel, acc: Account) {
     if (isNIP94Server(postViewModel.selectedServer) ||
         postViewModel.selectedServer == ServersAvailable.NIP95
     ) {
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            SettingSwitchItem(
+                checked = postViewModel.sensitiveContent,
+                onCheckedChange = { postViewModel.sensitiveContent = it },
+                title = R.string.add_sensitive_content_label,
+                description = R.string.add_sensitive_content_description
+            )
+        }
+
         Row(
             verticalAlignment = Alignment.CenterVertically,
             modifier = Modifier

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

@@ -13,6 +13,7 @@ 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.selection.toggleable
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.verticalScroll
@@ -41,6 +42,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
@@ -52,11 +54,13 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardCapitalization
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextDirection
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
@@ -67,7 +71,9 @@ import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
+import com.vitorpamplona.amethyst.service.noProtocolUrlValidator
 import com.vitorpamplona.amethyst.ui.components.*
+import com.vitorpamplona.amethyst.ui.note.NoteCompose
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.TextSpinner
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.UserLine
@@ -77,6 +83,7 @@ import com.vitorpamplona.amethyst.ui.theme.Font14SP
 import com.vitorpamplona.amethyst.ui.theme.QuoteBorder
 import com.vitorpamplona.amethyst.ui.theme.mediumImportanceLink
 import com.vitorpamplona.amethyst.ui.theme.placeholderText
+import com.vitorpamplona.amethyst.ui.theme.replyModifier
 import com.vitorpamplona.amethyst.ui.theme.subtleBorder
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.toImmutableList
@@ -88,8 +95,7 @@ import kotlinx.coroutines.withContext
 @OptIn(ExperimentalComposeUiApi::class)
 @Composable
 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 account = remember(accountViewModel) { accountViewModel.account }
 
     val postViewModel: NewPostViewModel = viewModel()
 
@@ -177,6 +183,18 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                 .fillMaxWidth()
                                 .verticalScroll(scrollState)
                         ) {
+                            postViewModel.originalNote?.let {
+                                NoteCompose(
+                                    baseNote = it,
+                                    makeItShort = true,
+                                    unPackReply = false,
+                                    isQuotedNote = true,
+                                    modifier = MaterialTheme.colors.replyModifier,
+                                    accountViewModel = accountViewModel,
+                                    nav = nav
+                                )
+                            }
+
                             Notifying(postViewModel.mentions?.toImmutableList()) {
                                 postViewModel.removeFromReplyList(it)
                             }
@@ -243,8 +261,8 @@ fun NewPostView(onClose: () -> Unit, baseReplyTo: Note? = null, quote: Note? = n
                                     ImageVideoDescription(
                                         url,
                                         account.defaultFileServer,
-                                        onAdd = { description, server ->
-                                            postViewModel.upload(url, description, server, context)
+                                        onAdd = { description, server, sensitiveContent ->
+                                            postViewModel.upload(url, description, sensitiveContent, server, context)
                                             account.changeDefaultFileServer(server)
                                         },
                                         onCancel = {
@@ -496,7 +514,9 @@ private fun AddZapraiserButton(
                 Icon(
                     imageVector = Icons.Default.ShowChart,
                     null,
-                    modifier = Modifier.size(20.dp).align(Alignment.TopStart),
+                    modifier = Modifier
+                        .size(20.dp)
+                        .align(Alignment.TopStart),
                     tint = MaterialTheme.colors.onBackground
                 )
                 Icon(
@@ -511,7 +531,9 @@ private fun AddZapraiserButton(
                 Icon(
                     imageVector = Icons.Default.ShowChart,
                     null,
-                    modifier = Modifier.size(20.dp).align(Alignment.TopStart),
+                    modifier = Modifier
+                        .size(20.dp)
+                        .align(Alignment.TopStart),
                     tint = BitcoinOrange
                 )
                 Icon(
@@ -812,7 +834,7 @@ enum class ServersAvailable {
 fun ImageVideoDescription(
     uri: Uri,
     defaultServer: ServersAvailable,
-    onAdd: (String, ServersAvailable) -> Unit,
+    onAdd: (String, ServersAvailable, Boolean) -> Unit,
     onCancel: () -> Unit,
     onError: (String) -> Unit
 ) {
@@ -841,6 +863,7 @@ fun ImageVideoDescription(
 
     var selectedServer by remember { mutableStateOf(defaultServer) }
     var message by remember { mutableStateOf("") }
+    var sensitiveContent by remember { mutableStateOf(false) }
 
     Column(
         modifier = Modifier
@@ -968,6 +991,18 @@ fun ImageVideoDescription(
             if (isNIP94Server(selectedServer) ||
                 selectedServer == ServersAvailable.NIP95
             ) {
+                Row(
+                    verticalAlignment = Alignment.CenterVertically,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    SettingSwitchItem(
+                        checked = sensitiveContent,
+                        onCheckedChange = { sensitiveContent = it },
+                        title = R.string.add_sensitive_content_label,
+                        description = R.string.add_sensitive_content_description
+                    )
+                }
+
                 Row(
                     verticalAlignment = Alignment.CenterVertically,
                     modifier = Modifier
@@ -999,7 +1034,7 @@ fun ImageVideoDescription(
                     .fillMaxWidth()
                     .padding(vertical = 10.dp),
                 onClick = {
-                    onAdd(message, selectedServer)
+                    onAdd(message, selectedServer, sensitiveContent)
                 },
                 shape = QuoteBorder,
                 colors = ButtonDefaults.buttonColors(
@@ -1018,3 +1053,54 @@ data class ImmutableListOfLists<T>(val lists: List<List<T>> = emptyList())
 fun List<List<String>>.toImmutableListOfLists(): ImmutableListOfLists<String> {
     return ImmutableListOfLists(this)
 }
+
+@Composable
+fun SettingSwitchItem(
+    modifier: Modifier = Modifier,
+    checked: Boolean,
+    onCheckedChange: (Boolean) -> Unit,
+    title: Int,
+    description: Int,
+    enabled: Boolean = true
+) {
+    Row(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 8.dp)
+            .toggleable(
+                value = checked,
+                enabled = enabled,
+                role = Role.Switch,
+                onValueChange = onCheckedChange
+            ),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Column(
+            modifier = Modifier.weight(1.0f),
+            verticalArrangement = Arrangement.spacedBy(3.dp)
+        ) {
+            val contentAlpha = if (enabled) ContentAlpha.high else ContentAlpha.disabled
+
+            Text(
+                text = stringResource(id = title),
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.alpha(contentAlpha)
+            )
+            Text(
+                text = stringResource(id = description),
+                style = MaterialTheme.typography.caption,
+                color = Color.Gray,
+                maxLines = 2,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.alpha(contentAlpha)
+            )
+        }
+
+        Switch(
+            checked = checked,
+            onCheckedChange = null,
+            enabled = enabled
+        )
+    }
+}

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

@@ -18,11 +18,12 @@ import com.vitorpamplona.amethyst.service.FileHeader
 import com.vitorpamplona.amethyst.service.NostrSearchEventOrUserDataSource
 import com.vitorpamplona.amethyst.service.model.AddressableEvent
 import com.vitorpamplona.amethyst.service.model.BaseTextNoteEvent
+import com.vitorpamplona.amethyst.service.model.CommunityDefinitionEvent
 import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
 import com.vitorpamplona.amethyst.service.model.TextNoteEvent
+import com.vitorpamplona.amethyst.service.noProtocolUrlValidator
 import com.vitorpamplona.amethyst.ui.components.MediaCompressor
 import com.vitorpamplona.amethyst.ui.components.isValidURL
-import com.vitorpamplona.amethyst.ui.components.noProtocolUrlValidator
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
@@ -89,15 +90,17 @@ open class NewPostViewModel() : ViewModel() {
                 this.replyTos = listOf(replyNote)
             }
 
-            replyNote.author?.let { replyUser ->
-                val currentMentions = (replyNote.event as? TextNoteEvent)
-                    ?.mentions()
-                    ?.map { LocalCache.getOrCreateUser(it) } ?: emptyList()
+            if (replyNote.event !is CommunityDefinitionEvent) {
+                replyNote.author?.let { replyUser ->
+                    val currentMentions = (replyNote.event as? TextNoteEvent)
+                        ?.mentions()
+                        ?.map { LocalCache.getOrCreateUser(it) } ?: emptyList()
 
-                if (currentMentions.contains(replyUser)) {
-                    this.mentions = currentMentions
-                } else {
-                    this.mentions = currentMentions.plus(replyUser)
+                    if (currentMentions.contains(replyUser)) {
+                        this.mentions = currentMentions
+                    } else {
+                        this.mentions = currentMentions.plus(replyUser)
+                    }
                 }
             }
         } ?: run {
@@ -176,7 +179,7 @@ open class NewPostViewModel() : ViewModel() {
         cancel()
     }
 
-    fun upload(galleryUri: Uri, description: String, server: ServersAvailable, context: Context) {
+    fun upload(galleryUri: Uri, description: String, sensitiveContent: Boolean, server: ServersAvailable, context: Context) {
         isUploadingImage = true
         contentToAddUrl = null
 
@@ -191,7 +194,7 @@ open class NewPostViewModel() : ViewModel() {
                 onReady = { fileUri, contentType, size ->
                     if (server == ServersAvailable.NIP95) {
                         contentResolver.openInputStream(fileUri)?.use {
-                            createNIP95Record(it.readBytes(), contentType, description)
+                            createNIP95Record(it.readBytes(), contentType, description, sensitiveContent)
                         }
                     } else {
                         ImageUploader.uploadImage(
@@ -202,7 +205,7 @@ open class NewPostViewModel() : ViewModel() {
                             contentResolver = contentResolver,
                             onSuccess = { imageUrl, mimeType ->
                                 if (isNIP94Server(server)) {
-                                    createNIP94Record(imageUrl, mimeType, description)
+                                    createNIP94Record(imageUrl, mimeType, description, sensitiveContent)
                                 } else {
                                     isUploadingImage = false
                                     message = TextFieldValue(message.text + "\n\n" + imageUrl)
@@ -367,13 +370,14 @@ open class NewPostViewModel() : ViewModel() {
         }
     }
 
-    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String) {
+    fun createNIP94Record(imageUrl: String, mimeType: String?, description: String, sensitiveContent: Boolean) {
         viewModelScope.launch(Dispatchers.IO) {
             // Images don't seem to be ready immediately after upload
             FileHeader.prepare(
                 imageUrl,
                 mimeType,
                 description,
+                sensitiveContent,
                 onReady = {
                     val note = account?.sendHeader(it)
 
@@ -397,13 +401,14 @@ open class NewPostViewModel() : ViewModel() {
         }
     }
 
-    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String) {
+    fun createNIP95Record(bytes: ByteArray, mimeType: String?, description: String, sensitiveContent: Boolean) {
         viewModelScope.launch(Dispatchers.IO) {
             FileHeader.prepare(
                 bytes,
                 "",
                 mimeType,
                 description,
+                sensitiveContent,
                 onReady = {
                     val nip95 = account?.createNip95(bytes, headerInfo = it)
                     val note = nip95?.let { it1 -> account?.sendNip95(it1.first, it1.second) }

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

@@ -3,6 +3,7 @@ package com.vitorpamplona.amethyst.ui.actions
 import android.content.Context
 import android.util.Log
 import android.widget.Toast
+import androidx.compose.animation.Crossfade
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -29,6 +30,7 @@ import androidx.compose.ui.window.DialogProperties
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.RelayInformation
 import com.vitorpamplona.amethyst.service.HttpClient
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.ui.components.ClickableEmail
 import com.vitorpamplona.amethyst.ui.components.ClickableUrl
 import com.vitorpamplona.amethyst.ui.note.LoadUser
@@ -246,7 +248,11 @@ private fun DisplayOwnerInformation(
     nav: (String) -> Unit
 ) {
     LoadUser(baseUserHex = userHex) {
-        UserCompose(baseUser = it, accountViewModel = accountViewModel, showDiviser = false, nav = nav)
+        Crossfade(it) {
+            if (it != null) {
+                UserCompose(baseUser = it, accountViewModel = accountViewModel, showDiviser = false, nav = nav)
+            }
+        }
     }
 }
 
@@ -286,31 +292,44 @@ fun loadRelayInfo(
     scope: CoroutineScope,
     onInfo: (RelayInformation) -> Unit
 ) {
-    val url = if (dirtyUrl.contains("://")) {
-        dirtyUrl
-            .replace("wss://", "https://")
-            .replace("ws://", "http://")
-    } else {
-        "https://$dirtyUrl"
-    }
+    try {
+        val url = if (dirtyUrl.contains("://")) {
+            dirtyUrl
+                .replace("wss://", "https://")
+                .replace("ws://", "http://")
+        } else {
+            "https://$dirtyUrl"
+        }
 
-    val request: Request = Request
-        .Builder()
-        .header("Accept", "application/nostr+json")
-        .url(url)
-        .build()
+        val request: Request = Request
+            .Builder()
+            .header("Accept", "application/nostr+json")
+            .url(url)
+            .build()
 
-    HttpClient.getHttpClient()
-        .newCall(request)
-        .enqueue(
-            object : Callback {
-                override fun onResponse(call: Call, response: Response) {
-                    response.use {
-                        val body = it.body.string()
-                        try {
-                            if (it.isSuccessful) {
-                                onInfo(RelayInformation.fromJson(body))
-                            } else {
+        HttpClient.getHttpClient()
+            .newCall(request)
+            .enqueue(
+                object : Callback {
+                    override fun onResponse(call: Call, response: Response) {
+                        checkNotInMainThread()
+                        response.use {
+                            val body = it.body.string()
+                            try {
+                                if (it.isSuccessful) {
+                                    onInfo(RelayInformation.fromJson(body))
+                                } else {
+                                    scope.launch {
+                                        Toast
+                                            .makeText(
+                                                context,
+                                                context.getString(R.string.an_error_ocurred_trying_to_get_relay_information, dirtyUrl),
+                                                Toast.LENGTH_SHORT
+                                            ).show()
+                                    }
+                                }
+                            } catch (e: Exception) {
+                                Log.e("RelayInfoFail", "Resulting Message from Relay $dirtyUrl in not parseable: $body", e)
                                 scope.launch {
                                     Toast
                                         .makeText(
@@ -320,31 +339,31 @@ fun loadRelayInfo(
                                         ).show()
                                 }
                             }
-                        } catch (e: Exception) {
-                            Log.e("RelayInfoFail", "Resulting Message from Relay in not parseable: $body", e)
-                            scope.launch {
-                                Toast
-                                    .makeText(
-                                        context,
-                                        context.getString(R.string.an_error_ocurred_trying_to_get_relay_information, dirtyUrl),
-                                        Toast.LENGTH_SHORT
-                                    ).show()
-                            }
+                        }
+                    }
+
+                    override fun onFailure(call: Call, e: IOException) {
+                        Log.e("RelayInfoFail", "Resulting Message from Relay in not parseable $dirtyUrl", e)
+                        scope.launch {
+                            Toast
+                                .makeText(
+                                    context,
+                                    context.getString(R.string.an_error_ocurred_trying_to_get_relay_information, dirtyUrl),
+                                    Toast.LENGTH_SHORT
+                                ).show()
                         }
                     }
                 }
-
-                override fun onFailure(call: Call, e: IOException) {
-                    Log.e("RelayInfoFail", "Resulting Message from Relay in not parseable", e)
-                    scope.launch {
-                        Toast
-                            .makeText(
-                                context,
-                                context.getString(R.string.an_error_ocurred_trying_to_get_relay_information, dirtyUrl),
-                                Toast.LENGTH_SHORT
-                            ).show()
-                    }
-                }
-            }
-        )
+            )
+    } catch (e: Exception) {
+        Log.e("RelayInfoFail", "Invalid URL $dirtyUrl", e)
+        scope.launch {
+            Toast
+                .makeText(
+                    context,
+                    context.getString(R.string.an_error_ocurred_trying_to_get_relay_information, dirtyUrl),
+                    Toast.LENGTH_SHORT
+                ).show()
+        }
+    }
 }

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

@@ -0,0 +1,58 @@
+package com.vitorpamplona.amethyst.ui.buttons
+
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.ButtonDefaults
+import androidx.compose.material.Icon
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.OutlinedButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+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.Note
+import com.vitorpamplona.amethyst.ui.actions.NewPostView
+import com.vitorpamplona.amethyst.ui.components.LoadNote
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun NewCommunityNoteButton(communityIdHex: String, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+    LoadNote(baseNoteHex = communityIdHex) {
+        it?.let {
+            NewCommunityNoteButton(it, accountViewModel, nav)
+        }
+    }
+}
+
+@Composable
+fun NewCommunityNoteButton(note: Note, accountViewModel: AccountViewModel, nav: (String) -> Unit) {
+    var wantsToPost by remember {
+        mutableStateOf(false)
+    }
+
+    if (wantsToPost) {
+        NewPostView({ wantsToPost = false }, note, accountViewModel = accountViewModel, nav = nav)
+    }
+
+    OutlinedButton(
+        onClick = { wantsToPost = true },
+        modifier = Modifier.size(55.dp),
+        shape = CircleShape,
+        colors = ButtonDefaults.outlinedButtonColors(backgroundColor = MaterialTheme.colors.primary),
+        contentPadding = PaddingValues(0.dp)
+    ) {
+        Icon(
+            painter = painterResource(R.drawable.ic_compose),
+            null,
+            modifier = Modifier.size(26.dp),
+            tint = Color.White
+        )
+    }
+}

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

@@ -0,0 +1,197 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import android.content.Intent
+import android.net.Uri
+import android.widget.Toast
+import androidx.compose.animation.Crossfade
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.core.content.ContextCompat.startActivity
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.service.CashuProcessor
+import com.vitorpamplona.amethyst.service.CashuToken
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.theme.QuoteBorder
+import com.vitorpamplona.amethyst.ui.theme.subtleBorder
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+@Composable
+fun CashuPreview(cashutoken: String, accountViewModel: AccountViewModel) {
+    var cachuData by remember { mutableStateOf<GenericLoadable<CashuToken>>(GenericLoadable.Loading<CashuToken>()) }
+
+    LaunchedEffect(key1 = cashutoken) {
+        launch(Dispatchers.IO) {
+            val newCachuData = CashuProcessor().parse(cashutoken)
+            launch(Dispatchers.Main) {
+                cachuData = newCachuData
+            }
+        }
+    }
+
+    Crossfade(targetState = cachuData) {
+        when (it) {
+            is GenericLoadable.Loaded<CashuToken> -> CashuPreview(it.loaded, accountViewModel)
+            is GenericLoadable.Error<CashuToken> -> Text(
+                text = "$cashutoken ",
+                style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+            )
+            else -> {}
+        }
+    }
+}
+
+@Composable
+fun CashuPreview(token: CashuToken, accountViewModel: AccountViewModel) {
+    val lud16 = remember(accountViewModel) {
+        accountViewModel.account.userProfile().info?.lud16
+    }
+
+    val useWebService = false
+    val context = LocalContext.current
+    val scope = rememberCoroutineScope()
+    val clipboardManager = LocalClipboardManager.current
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 30.dp, end = 30.dp)
+            .clip(shape = QuoteBorder)
+            .border(1.dp, MaterialTheme.colors.subtleBorder, QuoteBorder)
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(30.dp)
+        ) {
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+            ) {
+                Icon(
+                    painter = painterResource(R.drawable.cashu),
+                    null,
+                    modifier = Modifier.size(20.dp),
+                    tint = Color.Unspecified
+                )
+
+                Text(
+                    text = stringResource(R.string.cashu),
+                    fontSize = 20.sp,
+                    fontWeight = FontWeight.W500,
+                    modifier = Modifier.padding(start = 10.dp)
+                )
+            }
+
+            Divider()
+
+            token.totalAmount.let {
+                Text(
+                    text = "$it ${stringResource(id = R.string.sats)}",
+                    fontSize = 25.sp,
+                    fontWeight = FontWeight.W500,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 10.dp)
+                )
+            }
+
+            Row(
+
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+            ) {
+                Button(
+
+                    modifier = Modifier
+                        .padding(vertical = 10.dp).padding(horizontal = 2.dp),
+                    onClick = {
+                        if (lud16 != null) {
+                            scope.launch(Dispatchers.IO) {
+                                CashuProcessor().melt(
+                                    token,
+                                    lud16,
+                                    onSuccess = {
+                                        scope.launch {
+                                            Toast.makeText(context, it, Toast.LENGTH_SHORT).show()
+                                        }
+                                    },
+                                    onError = {
+                                        scope.launch {
+                                            Toast.makeText(context, it, Toast.LENGTH_SHORT).show()
+                                        }
+                                    }
+                                )
+                            }
+                        } else {
+                            scope.launch {
+                                Toast.makeText(
+                                    context,
+                                    "No Lightning Address set",
+                                    Toast.LENGTH_SHORT
+                                ).show()
+                            }
+                        }
+                    },
+                    shape = QuoteBorder,
+                    colors = ButtonDefaults.buttonColors(
+                        backgroundColor = MaterialTheme.colors.primary
+                    )
+                ) {
+                    Text(
+                        stringResource(R.string.cashu_redeem),
+                        color = Color.White,
+                        fontSize = 18.sp
+                    )
+                }
+                Button(
+                    modifier = Modifier
+                        .padding(vertical = 10.dp).padding(horizontal = 1.dp),
+                    onClick = {
+                        if (useWebService) {
+                            // In case we want to use the cashu.me webservice
+                            val url = "https://redeem.cashu.me?token=$token&lightning=$lud16&autopay=false"
+                            val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
+                            startActivity(context, intent, null)
+                        } else {
+                            // Copying the token to clipboard for now
+                            var orignaltoken = token.token
+                            clipboardManager.setText(AnnotatedString("$orignaltoken"))
+                            scope.launch {
+                                Toast.makeText(context, "Copied token to clipboard", Toast.LENGTH_SHORT).show()
+                            }
+                        }
+                    },
+                    shape = QuoteBorder,
+                    colors = ButtonDefaults.buttonColors(
+                        backgroundColor = MaterialTheme.colors.primary
+                    )
+                ) {
+                    Text("⎘", color = Color.White, fontSize = 18.sp)
+                }
+            }
+        }
+    }
+}

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

@@ -7,6 +7,7 @@ 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.LocalContext
 import androidx.compose.ui.text.AnnotatedString
 
@@ -15,7 +16,7 @@ fun ClickableEmail(email: String) {
     val context = LocalContext.current
 
     ClickableText(
-        text = AnnotatedString("$email "),
+        text = remember { AnnotatedString(email) },
         onClick = { runCatching { context.sendMail(email) } },
         style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
     )

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

@@ -7,6 +7,7 @@ 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.LocalContext
 import androidx.compose.ui.text.AnnotatedString
 
@@ -15,7 +16,7 @@ fun ClickablePhone(phone: String) {
     val context = LocalContext.current
 
     ClickableText(
-        text = AnnotatedString("$phone "),
+        text = remember { AnnotatedString(phone) },
         onClick = { runCatching { context.dial(phone) } },
         style = LocalTextStyle.current.copy(color = MaterialTheme.colors.primary)
     )

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

@@ -50,6 +50,7 @@ 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 com.vitorpamplona.amethyst.ui.note.toShortenHex
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.ImmutableMap
 import kotlinx.collections.immutable.persistentListOf
@@ -78,7 +79,7 @@ fun ClickableRoute(
         else -> {
             Text(
                 remember {
-                    "@${nip19.hex}${nip19.additionalChars} "
+                    "@${nip19.hex}${nip19.additionalChars}"
                 }
             )
         }
@@ -111,7 +112,16 @@ private fun DisplayEvent(
     nav: (String) -> Unit
 ) {
     LoadNote(nip19.hex) {
-        DisplayNoteLink(it, nip19, nav)
+        if (it != null) {
+            DisplayNoteLink(it, nip19, nav)
+        } else {
+            CreateClickableText(
+                clickablePart = remember(nip19) { "@${nip19.hex.toShortenHex()}" },
+                suffix = nip19.additionalChars,
+                route = remember(nip19) { "Event/${nip19.hex}" },
+                nav = nav
+            )
+        }
     }
 }
 
@@ -121,7 +131,16 @@ private fun DisplayNote(
     nav: (String) -> Unit
 ) {
     LoadNote(nip19.hex) {
-        DisplayNoteLink(it, nip19, nav)
+        if (it != null) {
+            DisplayNoteLink(it, nip19, nav)
+        } else {
+            CreateClickableText(
+                clickablePart = remember(nip19) { "@${nip19.hex.toShortenHex()}" },
+                suffix = nip19.additionalChars,
+                route = remember(nip19) { "Event/${nip19.hex}" },
+                nav = nav
+            )
+        }
     }
 }
 
@@ -137,7 +156,7 @@ private fun DisplayNoteLink(
 
     val channelHex = remember(noteState) { note.channelHex() }
     val noteIdDisplayNote = remember(noteState) { "@${note.idDisplayNote()}" }
-    val addedCharts = remember { "${nip19.additionalChars} " }
+    val addedCharts = remember { "${nip19.additionalChars}" }
 
     if (note.event is ChannelCreateEvent || nip19.kind == ChannelCreateEvent.kind) {
         CreateClickableText(
@@ -199,7 +218,7 @@ private fun DisplayAddress(
 
         val route = remember(noteState) { "Note/${nip19.hex}" }
         val displayName = remember(noteState) { "@${noteState?.note?.idDisplayNote()}" }
-        val addedCharts = remember { "${nip19.additionalChars} " }
+        val addedCharts = remember { "${nip19.additionalChars}" }
 
         CreateClickableText(
             clickablePart = displayName,
@@ -212,7 +231,7 @@ private fun DisplayAddress(
     if (noteBase == null) {
         Text(
             remember {
-                "@${nip19.hex}${nip19.additionalChars} "
+                "@${nip19.hex}${nip19.additionalChars}"
             }
         )
     }
@@ -240,7 +259,7 @@ private fun DisplayUser(
     if (userBase == null) {
         Text(
             remember {
-                "@${nip19.hex}${nip19.additionalChars} "
+                "@${nip19.hex}${nip19.additionalChars}"
             }
         )
     }
@@ -268,7 +287,7 @@ private fun RenderUserAsClickableText(
     }
 
     val addedCharts = remember(nip19) {
-        "${nip19.additionalChars} "
+        "${nip19.additionalChars}"
     }
 
     userDisplayName?.let {
@@ -286,7 +305,7 @@ private fun RenderUserAsClickableText(
 @Composable
 fun CreateClickableText(
     clickablePart: String,
-    suffix: String,
+    suffix: String?,
     maxLines: Int = Int.MAX_VALUE,
     overrideColor: Color? = null,
     fontWeight: FontWeight = FontWeight.Normal,
@@ -310,8 +329,10 @@ fun CreateClickableText(
             withStyle(clickablePartStyle) {
                 append(clickablePart)
             }
-            withStyle(nonClickablePartStyle) {
-                append(suffix)
+            if (!suffix.isNullOrBlank()) {
+                withStyle(nonClickablePartStyle) {
+                    append(suffix)
+                }
             }
         }
     }
@@ -378,7 +399,7 @@ fun CreateTextWithEmoji(
             )
         ).toSpanStyle()
 
-        InLineIconRenderer(emojiList, style, maxLines, overflow, modifier)
+        InLineIconRenderer(emojiList, style, fontSize, maxLines, overflow, modifier)
     }
 }
 
@@ -437,7 +458,7 @@ fun CreateTextWithEmoji(
             ).toSpanStyle()
         }
 
-        InLineIconRenderer(emojiList, style, maxLines, overflow, modifier)
+        InLineIconRenderer(emojiList, style, fontSize, maxLines, overflow, modifier)
     }
 }
 
@@ -488,7 +509,7 @@ data class DoubleEmojiList(
 @Composable
 fun CreateClickableTextWithEmoji(
     clickablePart: String,
-    suffix: String,
+    suffix: String?,
     maxLines: Int = Int.MAX_VALUE,
     overrideColor: Color? = null,
     fontWeight: FontWeight = FontWeight.Normal,
@@ -507,7 +528,7 @@ fun CreateClickableTextWithEmoji(
 
             if (emojis.isNotEmpty()) {
                 val newEmojiList1 = assembleAnnotatedList(clickablePart, emojis)
-                val newEmojiList2 = assembleAnnotatedList(suffix, emojis)
+                val newEmojiList2 = suffix?.let { assembleAnnotatedList(it, emojis) } ?: emptyList<Renderable>()
 
                 if (newEmojiList1.isNotEmpty() || newEmojiList2.isNotEmpty()) {
                     emojiLists = DoubleEmojiList(newEmojiList1.toImmutableList(), newEmojiList2.toImmutableList())
@@ -530,7 +551,7 @@ fun CreateClickableTextWithEmoji(
         InLineIconRenderer(
             emojiLists!!.part2,
             LocalTextStyle.current.copy(color = overrideColor ?: MaterialTheme.colors.onBackground, fontWeight = fontWeight).toSpanStyle(),
-            maxLines
+            maxLines = maxLines
         )
     }
 }
@@ -625,6 +646,7 @@ fun ClickableInLineIconRenderer(
 fun InLineIconRenderer(
     wordsInOrder: ImmutableList<Renderable>,
     style: SpanStyle,
+    fontSize: TextUnit = TextUnit.Unspecified,
     maxLines: Int = Int.MAX_VALUE,
     overflow: TextOverflow = TextOverflow.Clip,
     modifier: Modifier = Modifier
@@ -671,6 +693,7 @@ fun InLineIconRenderer(
     Text(
         text = annotatedText,
         inlineContent = inlineContent,
+        fontSize = fontSize,
         maxLines = maxLines,
         overflow = overflow,
         modifier = modifier

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

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.ui.components
 
 import android.content.Intent
 import android.net.Uri
+import androidx.compose.animation.Crossfade
 import androidx.compose.foundation.text.ClickableText
 import androidx.compose.material.LocalTextStyle
 import androidx.compose.material.MaterialTheme
@@ -25,13 +26,16 @@ fun MayBeWithdrawal(lnurlWord: String) {
         }
     }
 
-    lnWithdrawal?.let {
-        ClickableWithdrawal(withdrawalString = it)
+    Crossfade(targetState = lnWithdrawal) {
+        if (it != null) {
+            ClickableWithdrawal(withdrawalString = it)
+        } else {
+            Text(
+                text = lnurlWord,
+                style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+            )
+        }
     }
-        ?: Text(
-            text = "$lnurlWord ",
-            style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-        )
 }
 
 @Composable

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

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
@@ -19,13 +20,12 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.drawBehind
-import androidx.compose.ui.graphics.Brush
 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.ui.actions.ImmutableListOfLists
+import com.vitorpamplona.amethyst.ui.note.getGradient
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.ButtonBorder
 import com.vitorpamplona.amethyst.ui.theme.secondaryButtonBackground
@@ -80,16 +80,7 @@ fun ExpandableRichTextViewer(
                 modifier = Modifier
                     .align(Alignment.BottomCenter)
                     .fillMaxWidth()
-                    .drawBehind {
-                        drawRect(
-                            Brush.verticalGradient(
-                                colors = listOf(
-                                    backgroundColor.value.copy(alpha = 0f),
-                                    backgroundColor.value
-                                )
-                            )
-                        )
-                    }
+                    .background(getGradient(backgroundColor))
             ) {
                 ShowMoreButton() {
                     showFullText = !showFullText

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

@@ -0,0 +1,19 @@
+package com.vitorpamplona.amethyst.ui.components
+
+import androidx.compose.runtime.Immutable
+
+@Immutable
+sealed class GenericLoadable<T> {
+
+    @Immutable
+    class Loading<T> : GenericLoadable<T>()
+
+    @Immutable
+    class Loaded<T>(val loaded: T) : GenericLoadable<T>()
+
+    @Immutable
+    class Empty<T> : GenericLoadable<T>()
+
+    @Immutable
+    class Error<T>(val errorMessage: String) : GenericLoadable<T>()
+}

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

@@ -2,6 +2,7 @@ package com.vitorpamplona.amethyst.ui.components
 
 import android.content.Intent
 import android.net.Uri
+import androidx.compose.animation.Crossfade
 import androidx.compose.foundation.border
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -27,7 +28,7 @@ import com.vitorpamplona.amethyst.service.lnurl.LnInvoiceUtil
 import com.vitorpamplona.amethyst.ui.theme.QuoteBorder
 import com.vitorpamplona.amethyst.ui.theme.subtleBorder
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.launch
 import java.text.NumberFormat
 
 @Composable
@@ -35,7 +36,7 @@ fun MayBeInvoicePreview(lnbcWord: String) {
     var lnInvoice by remember { mutableStateOf<Pair<String, String?>?>(null) }
 
     LaunchedEffect(key1 = lnbcWord) {
-        withContext(Dispatchers.IO) {
+        launch(Dispatchers.IO) {
             val myInvoice = LnInvoiceUtil.findInvoice(lnbcWord)
             if (myInvoice != null) {
                 val myInvoiceAmount = try {
@@ -50,13 +51,16 @@ fun MayBeInvoicePreview(lnbcWord: String) {
         }
     }
 
-    lnInvoice?.let {
-        InvoicePreview(it.first, it.second)
+    Crossfade(targetState = lnInvoice) {
+        if (it != null) {
+            InvoicePreview(it.first, it.second)
+        } else {
+            Text(
+                text = lnbcWord,
+                style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
+            )
+        }
     }
-        ?: Text(
-            text = "$lnbcWord ",
-            style = LocalTextStyle.current.copy(textDirection = TextDirection.Content)
-        )
 }
 
 @Composable

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

@@ -10,6 +10,7 @@ import com.abedelazizshe.lightcompressorlibrary.VideoCompressor
 import com.abedelazizshe.lightcompressorlibrary.VideoQuality
 import com.abedelazizshe.lightcompressorlibrary.config.AppSpecificStorageConfiguration
 import com.abedelazizshe.lightcompressorlibrary.config.Configuration
+import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import id.zelory.compressor.Compressor
 import id.zelory.compressor.constraint.default
 import java.io.File
@@ -24,6 +25,8 @@ class MediaCompressor {
         onReady: (Uri, String?, Long?) -> Unit,
         onError: (String) -> Unit
     ) {
+        checkNotInMainThread()
+
         if (contentType?.startsWith("video", true) == true) {
             VideoCompressor.start(
                 context = applicationContext, // => This is required

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

@@ -50,7 +50,7 @@ fun RobohashAsyncImage(
 @Composable
 fun RobohashFallbackAsyncImage(
     robot: String,
-    model: String,
+    model: String?,
     contentDescription: String?,
     modifier: Modifier = Modifier,
     alignment: Alignment = Alignment.Center,
@@ -91,28 +91,15 @@ fun RobohashAsyncImageProxy(
     colorFilter: ColorFilter? = null,
     filterQuality: FilterQuality = DrawScope.DefaultFilterQuality
 ) {
-    if (model == null) {
-        RobohashAsyncImage(
-            robot = robot,
-            contentDescription = contentDescription,
-            modifier = modifier,
-            alignment = alignment,
-            contentScale = contentScale,
-            alpha = alpha,
-            colorFilter = colorFilter,
-            filterQuality = filterQuality
-        )
-    } else {
-        RobohashFallbackAsyncImage(
-            robot = robot,
-            model = model,
-            contentDescription = contentDescription,
-            modifier = modifier,
-            alignment = alignment,
-            contentScale = contentScale,
-            alpha = alpha,
-            colorFilter = colorFilter,
-            filterQuality = filterQuality
-        )
-    }
+    RobohashFallbackAsyncImage(
+        robot = robot,
+        model = model,
+        contentDescription = contentDescription,
+        modifier = modifier,
+        alignment = alignment,
+        contentScale = contentScale,
+        alpha = alpha,
+        colorFilter = colorFilter,
+        filterQuality = filterQuality
+    )
 }

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

@@ -1,5 +1,6 @@
 package com.vitorpamplona.amethyst.ui.components
 
+import androidx.compose.animation.Crossfade
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -34,6 +35,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.model.EventInterface
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.ButtonBorder
 
@@ -43,7 +45,18 @@ fun SensitivityWarning(
     accountViewModel: AccountViewModel,
     content: @Composable () -> Unit
 ) {
-    val hasSensitiveContent = remember(note.event) { note.event?.isSensitive() ?: false }
+    note.event?.let {
+        SensitivityWarning(it, accountViewModel, content)
+    }
+}
+
+@Composable
+fun SensitivityWarning(
+    event: EventInterface,
+    accountViewModel: AccountViewModel,
+    content: @Composable () -> Unit
+) {
+    val hasSensitiveContent = remember(event) { event.isSensitive() ?: false }
 
     if (hasSensitiveContent) {
         SensitivityWarning(accountViewModel, content)
@@ -63,12 +76,14 @@ fun SensitivityWarning(
         mutableStateOf(accountState?.account?.showSensitiveContent != true)
     }
 
-    if (showContentWarningNote) {
-        ContentWarningNote() {
-            showContentWarningNote = false
+    Crossfade(targetState = showContentWarningNote) {
+        if (it) {
+            ContentWarningNote() {
+                showContentWarningNote = false
+            }
+        } else {
+            content()
         }
-    } else {
-        content()
     }
 }
 

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

@@ -25,7 +25,9 @@ fun UrlPreview(url: String, urlText: String) {
         LaunchedEffect(url) {
             launch(Dispatchers.IO) {
                 UrlCachedPreviewer.previewInfo(url) {
-                    urlPreviewState = it
+                    launch(Dispatchers.Main) {
+                        urlPreviewState = it
+                    }
                 }
             }
         }

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

@@ -62,6 +62,8 @@ import com.vitorpamplona.amethyst.VideoCache
 import com.vitorpamplona.amethyst.service.HttpClient
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlin.time.ExperimentalTime
+import kotlin.time.measureTimedValue
 
 public var DefaultMutedSetting = mutableStateOf(true)
 
@@ -97,12 +99,26 @@ fun LoadThumbAndThenVideoView(videoUri: String, description: String? = null, thu
     }
 }
 
+@OptIn(ExperimentalTime::class)
 @Composable
 fun VideoView(
     videoUri: String,
     description: String? = null,
     thumb: VideoThumb? = null,
     onDialog: ((Boolean) -> Unit)? = null
+) {
+    val (value, elapsed) = measureTimedValue {
+        VideoView1(videoUri, description, thumb, onDialog)
+    }
+    Log.d("Rendering Metrics", "VideoView $elapsed $videoUri")
+}
+
+@Composable
+fun VideoView1(
+    videoUri: String,
+    description: String? = null,
+    thumb: VideoThumb? = null,
+    onDialog: ((Boolean) -> Unit)? = null
 ) {
     var exoPlayerData by remember { mutableStateOf<VideoPlayer?>(null) }
     val defaultToStart by remember { mutableStateOf(DefaultMutedSetting.value) }
@@ -127,6 +143,7 @@ fun VideoView(
     }
 }
 
+@OptIn(ExperimentalTime::class)
 @Composable
 fun VideoView(
     videoUri: String,
@@ -135,6 +152,21 @@ fun VideoView(
     defaultToStart: Boolean = false,
     thumb: VideoThumb? = null,
     onDialog: ((Boolean) -> Unit)? = null
+) {
+    val (value, elapsed) = measureTimedValue {
+        VideoView1(videoUri, description, exoPlayerData, defaultToStart, thumb, onDialog)
+    }
+    Log.d("Rendering Metrics", "VideoView $elapsed $videoUri")
+}
+
+@Composable
+fun VideoView1(
+    videoUri: String,
+    description: String? = null,
+    exoPlayerData: VideoPlayer,
+    defaultToStart: Boolean = false,
+    thumb: VideoThumb? = null,
+    onDialog: ((Boolean) -> Unit)? = null
 ) {
     val lifecycleOwner = rememberUpdatedState(LocalLifecycleOwner.current)