Merge pull request #3315 from LubuSeb/lubu/url-comments-304

Add URL-scoped comment feeds

amethyst/src/main/java/com/vitorpamplona/amethyst/service/relayClient/reqCommand/RelaySubscriptionsCoordinator.kt

@@ -71,6 +71,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.datasource.RelayInfo
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.shorts.datasource.ShortsFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.softwareapps.datasource.SoftwareAppsFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.threadview.datasources.ThreadFilterAssembler
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource.UrlFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.video.datasource.VideoFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.wallet.datasource.OnchainZapsFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.workouts.datasource.WorkoutsFilterAssembler
@@ -116,6 +117,7 @@ class RelaySubscriptionsCoordinator(
     val profile = UserProfileFilterAssembler(client)
     val hashtags = HashtagFilterAssembler(client)
     val geohashes = GeoHashFilterAssembler(client)
+    val urls = UrlFilterAssembler(client)
     val relayFeed = RelayFeedFilterAssembler(client)
     val relayInfoNip66 = RelayInfoNip66FilterAssembler(client)
     val followPacks = FollowPackFeedFilterAssembler(client)
@@ -209,6 +211,7 @@ class RelaySubscriptionsCoordinator(
             profile,
             hashtags,
             geohashes,
+            urls,
             relayFeed,
             relayInfoNip66,
             chess,

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

@@ -51,8 +51,10 @@ import com.vitorpamplona.quartz.nip19Bech32.entities.NPub
 import com.vitorpamplona.quartz.nip47WalletConnect.Nip47WalletConnect
 import com.vitorpamplona.quartz.nip52Calendar.appt.day.CalendarDateSlotEvent
 import com.vitorpamplona.quartz.nip52Calendar.appt.time.CalendarTimeSlotEvent
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
 import com.vitorpamplona.quartz.utils.Log
 import com.vitorpamplona.quartz.utils.UriParser
+import java.net.URLDecoder
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.Dispatchers
@@ -147,6 +149,18 @@ fun isNotificationRoute(uri: String) = uri.startsWith("notifications", true) ||
 
 fun isHashtagRoute(uri: String) = uri.startsWith("hashtag?id=") || uri.startsWith("nostr:hashtag?id=")
 
+fun isUrlRoute(uri: String) = uri.startsWith("url?id=") || uri.startsWith("nostr:url?id=")
+
+fun urlRoute(uri: String): Route.Url? {
+    val url =
+        runCatching {
+            val rawUrl = java.net.URI(uri.removePrefix("nostr:")).findParameterValue("id") ?: return null
+            URLDecoder.decode(rawUrl, Charsets.UTF_8.name())
+        }.getOrNull() ?: return null
+
+    return UrlId.toScopeOrNull(url)?.let { Route.Url(it) }
+}
+
 fun isWalletConnectRoute(uri: String) = uri.startsWith("dlnwc?value=") || uri.startsWith("amethyst+walletconnect:dlnwc?value=") || uri.startsWith("amethyst+walletconnect://dlnwc?value=")
 
 fun isMarmotGroupRoute(uri: String) = uri.startsWith("marmot:")
@@ -164,6 +178,9 @@ fun uriToRoute(
     if (isHashtagRoute(uri)) {
         return Route.Hashtag(uri.removePrefix("nostr:").removePrefix("hashtag?id=").lowercase())
     }
+    if (isUrlRoute(uri)) {
+        return urlRoute(uri)
+    }
 
     val nip19 = Nip19Parser.uriToRoute(uri)?.entity
     if (nip19 != null) {

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/LoadUrlPreview.kt

@@ -30,6 +30,8 @@ import com.vitorpamplona.amethyst.commons.richtext.MediaUrlPdf
 import com.vitorpamplona.amethyst.commons.richtext.MediaUrlVideo
 import com.vitorpamplona.amethyst.model.UrlCachedPreviewer
 import com.vitorpamplona.amethyst.ui.actions.CrossfadeIfEnabled
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.HalfVertPadding
 
@@ -39,11 +41,12 @@ fun LoadUrlPreview(
     urlText: String,
     callbackUri: String? = null,
     accountViewModel: AccountViewModel,
+    nav: INav? = null,
 ) {
     if (!accountViewModel.settings.showUrlPreview()) {
         ClickableUrl(urlText, url)
     } else {
-        LoadUrlPreviewDirect(url, urlText, callbackUri, accountViewModel)
+        LoadUrlPreviewDirect(url, urlText, callbackUri, accountViewModel, nav)
     }
 }
 
@@ -53,6 +56,7 @@ fun LoadUrlPreviewDirect(
     urlText: String,
     callbackUri: String? = null,
     accountViewModel: AccountViewModel,
+    nav: INav? = null,
 ) {
     @Suppress("ProduceStateDoesNotAssignValue")
     val urlPreviewState by
@@ -72,7 +76,7 @@ fun LoadUrlPreviewDirect(
     ) { state ->
         when (state) {
             is UrlPreviewState.Loaded -> {
-                RenderLoaded(state, url, callbackUri, accountViewModel)
+                RenderLoaded(state, url, callbackUri, accountViewModel, nav)
             }
 
             is UrlPreviewState.Loading -> {
@@ -94,6 +98,7 @@ fun RenderLoaded(
     url: String,
     callbackUri: String? = null,
     accountViewModel: AccountViewModel,
+    nav: INav? = null,
 ) {
     when {
         state.previewInfo.mimeType.startsWith("image") -> {
@@ -130,7 +135,14 @@ fun RenderLoaded(
         }
 
         else -> {
-            UrlPreviewCard(url, state.previewInfo)
+            UrlPreviewCard(
+                url,
+                state.previewInfo,
+                onUrlComments =
+                    nav?.let {
+                        { it.nav(Route.Url(url)) }
+                    },
+            )
         }
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/RichTextViewer.kt

@@ -549,7 +549,7 @@ private fun RenderWordWithPreview(
         is ImageSegment -> ZoomableContentView(word.segmentText, state, accountViewModel)
         is VideoSegment -> ZoomableContentView(word.segmentText, state, accountViewModel)
         is PdfSegment -> ZoomableContentView(word.segmentText, state, accountViewModel)
-        is LinkSegment -> LoadUrlPreview(word.segmentText, word.segmentText, callbackUri, accountViewModel)
+        is LinkSegment -> LoadUrlPreview(word.segmentText, word.segmentText, callbackUri, accountViewModel, nav)
         is NowhereLinkSegment -> NowhereLinkCard(word)
         is EmojiSegment -> RenderCustomEmoji(word.segmentText, state)
         is InvoiceSegment -> MayBeInvoicePreview(word.segmentText, accountViewModel)

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

@@ -52,6 +52,7 @@ import kotlinx.coroutines.launch
 fun UrlPreviewCard(
     url: String,
     previewInfo: UrlInfoItem,
+    onUrlComments: (() -> Unit)? = null,
 ) {
     val uri = LocalUriHandler.current
     val popupExpanded =
@@ -76,6 +77,15 @@ fun UrlPreviewCard(
                         popupExpanded.value = false
                     }
                 }
+                onUrlComments?.let {
+                    M3ActionRow(
+                        icon = MaterialSymbols.Link,
+                        text = stringRes(R.string.kind_comments),
+                    ) {
+                        popupExpanded.value = false
+                        it()
+                    }
+                }
             }
         }
     }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/markdown/MarkdownMediaRenderer.kt

@@ -132,7 +132,7 @@ class MarkdownMediaRenderer(
                     renderAsCompleteLink(title ?: uri, uri, richTextStringBuilder)
                 } else {
                     renderInlineFullWidth(richTextStringBuilder) {
-                        LoadUrlPreview(uri, title ?: uri, callbackUri, accountViewModel)
+                        LoadUrlPreview(uri, title ?: uri, callbackUri, accountViewModel, nav)
                     }
                 }
             }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AppNavigation.kt

@@ -214,6 +214,8 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.shorts.ShortsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.softwareapps.SoftwareAppDetailScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.softwareapps.SoftwareAppsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.threadview.ThreadScreen
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.url.UrlPostScreen
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.url.UrlScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.video.VideoScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.video.hls.NewHlsVideoScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.wallet.AddCashuWalletScreen
@@ -460,6 +462,7 @@ fun BuildNavigation(
         composableFromEndArgs<Route.ContactListUsers> { ContactListUsersScreen(it.noteId, accountViewModel, nav) }
         composableFromEndArgs<Route.Hashtag> { HashtagScreen(it, accountViewModel, nav) }
         composableFromEndArgs<Route.Geohash> { GeoHashScreen(it, accountViewModel, nav) }
+        composableFromEndArgs<Route.Url> { UrlScreen(it, accountViewModel, nav) }
         composableFromEndArgs<Route.RelayFeed> { RelayFeedScreen(it, accountViewModel, nav) }
         composableFromEndArgs<Route.ChessGame> { ChessGameScreen(it.gameId, accountViewModel, nav) }
         composableFromEndArgs<Route.RelayInfo> { RelayInformationScreen(it.url, accountViewModel, nav) }
@@ -570,6 +573,19 @@ fun BuildNavigation(
             )
         }
 
+        composableFromBottomArgs<Route.UrlPost> {
+            UrlPostScreen(
+                url = it.url,
+                message = it.message,
+                attachment = it.attachment,
+                replyId = it.replyTo,
+                quoteId = it.quote,
+                draftId = it.draft,
+                accountViewModel,
+                nav,
+            )
+        }
+
         composableFromBottomArgs<Route.GenericCommentPost> {
             ReplyCommentPostScreen(
                 replyId = it.replyTo,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/navs/BouncingIntentNav.kt

@@ -34,6 +34,7 @@ import com.vitorpamplona.quartz.nip19Bech32.entities.NEvent
 import com.vitorpamplona.quartz.nip19Bech32.entities.NPub
 import com.vitorpamplona.quartz.nip28PublicChat.admin.ChannelCreateEvent
 import com.vitorpamplona.quartz.utils.Log
+import java.net.URLEncoder
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
@@ -144,6 +145,10 @@ class BouncingIntentNav(
                 NOSTR_URI_PREFIX + "hashtag?id=" + route.hashtag
             }
 
+            is Route.Url -> {
+                NOSTR_URI_PREFIX + "url?id=" + URLEncoder.encode(route.url, Charsets.UTF_8.name())
+            }
+
             is Route.LiveActivityChannel -> {
                 NOSTR_URI_PREFIX + NAddress.create(route.kind, route.pubKeyHex, route.dTag, null)
             }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/routes/Routes.kt

@@ -477,6 +477,10 @@ sealed class Route {
         val geohash: String,
     ) : Route()
 
+    @Serializable data class Url(
+        val url: String,
+    ) : Route()
+
     @Serializable data class ChessGame(
         val gameId: String,
     ) : Route()
@@ -691,6 +695,16 @@ sealed class Route {
         val draft: String? = null,
     ) : Route()
 
+    @Serializable
+    data class UrlPost(
+        val url: String? = null,
+        val message: String? = null,
+        val attachment: String? = null,
+        val replyTo: String? = null,
+        val quote: String? = null,
+        val draft: String? = null,
+    ) : Route()
+
     @Serializable
     data class GenericCommentPost(
         val message: String? = null,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/creators/previews/PreviewUrl.kt

@@ -84,7 +84,7 @@ fun PreviewUrl(
                 }
 
                 else -> {
-                    MyLoadUrlPreviewDirect(myUrlPreview, myUrlPreview, accountViewModel)
+                    MyLoadUrlPreviewDirect(myUrlPreview, myUrlPreview, accountViewModel, nav)
                 }
             }
         }
@@ -104,7 +104,7 @@ fun PreviewUrl(
         }
 
         RichTextParser.isUrlWithoutScheme(myUrlPreview) -> {
-            MyLoadUrlPreviewDirect("https://$myUrlPreview", myUrlPreview, accountViewModel)
+            MyLoadUrlPreviewDirect("https://$myUrlPreview", myUrlPreview, accountViewModel, nav)
         }
     }
 }
@@ -138,7 +138,7 @@ fun PreviewUrlFillWidth(
             }
 
             else -> {
-                MyLoadUrlPreviewDirectFillWidth(myUrlPreview, myUrlPreview, accountViewModel)
+                MyLoadUrlPreviewDirectFillWidth(myUrlPreview, myUrlPreview, accountViewModel, nav)
             }
         }
     } else if (RichTextParser.startsWithNIP19Scheme(myUrlPreview)) {
@@ -154,7 +154,7 @@ fun PreviewUrlFillWidth(
             nav = nav,
         )
     } else if (RichTextParser.isUrlWithoutScheme(myUrlPreview)) {
-        MyLoadUrlPreviewDirectFillWidth("https://$myUrlPreview", myUrlPreview, accountViewModel)
+        MyLoadUrlPreviewDirectFillWidth("https://$myUrlPreview", myUrlPreview, accountViewModel, nav)
     }
 }
 
@@ -200,6 +200,7 @@ private fun MyLoadUrlPreviewDirect(
     url: String,
     urlText: String,
     accountViewModel: AccountViewModel,
+    nav: INav,
 ) {
     @Suppress("ProduceStateDoesNotAssignValue")
     val urlPreviewState by
@@ -268,6 +269,7 @@ private fun MyLoadUrlPreviewDirectFillWidth(
     url: String,
     urlText: String,
     accountViewModel: AccountViewModel,
+    nav: INav,
 ) {
     @Suppress("ProduceStateDoesNotAssignValue")
     val urlPreviewState by
@@ -304,7 +306,11 @@ private fun MyLoadUrlPreviewDirectFillWidth(
                         accountViewModel = accountViewModel,
                     )
                 } else {
-                    UrlPreviewCard(url, previewInfo = state.previewInfo)
+                    UrlPreviewCard(
+                        url,
+                        previewInfo = state.previewInfo,
+                        onUrlComments = { nav.nav(com.vitorpamplona.amethyst.ui.navigation.routes.Route.Url(url)) },
+                    )
                 }
             }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/nip22Comments/DisplayExternalId.kt

@@ -30,7 +30,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.text.LinkAnnotation
 import androidx.compose.ui.text.LinkInteractionListener
 import androidx.compose.ui.text.buildAnnotatedString
@@ -43,6 +42,7 @@ import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbol
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.stringRes
 import com.vitorpamplona.amethyst.ui.theme.StdHorzSpacer
@@ -68,7 +68,7 @@ fun DisplayExternalId(
         }
 
         is UrlId -> {
-            DisplayUrlExternalId(externalId)
+            DisplayUrlExternalId(externalId, nav)
         }
 
         else -> {
@@ -78,13 +78,15 @@ fun DisplayExternalId(
 }
 
 @Composable
-fun DisplayUrlExternalId(externalId: UrlId) {
-    val uriHandler = LocalUriHandler.current
+fun DisplayUrlExternalId(
+    externalId: UrlId,
+    nav: INav,
+) {
     DisplayExternalIdChip(
         symbol = MaterialSymbols.Link,
         contentDescription = stringRes(id = R.string.external_url_scope),
         label = externalId.url,
-        linkInteractionListener = { runCatching { uriHandler.openUri(externalId.url) } },
+        linkInteractionListener = { nav.nav(Route.Url(externalId.url)) },
     )
 }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/NewUrlNoteButton.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url
+
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.FloatingActionButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.painterRes
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.stringRes
+import com.vitorpamplona.amethyst.ui.theme.Size26Modifier
+import com.vitorpamplona.amethyst.ui.theme.Size55Modifier
+
+@Composable
+fun NewUrlPostButton(
+    url: String,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    FloatingActionButton(
+        onClick = {
+            nav.nav(Route.UrlPost(url))
+        },
+        modifier = Size55Modifier,
+        shape = CircleShape,
+        containerColor = MaterialTheme.colorScheme.primary,
+    ) {
+        Icon(
+            painter = painterRes(R.drawable.ic_compose, 1),
+            contentDescription = stringRes(id = R.string.new_community_note),
+            modifier = Size26Modifier,
+            tint = Color.White,
+        )
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/UrlPostScreen.kt

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url
+
+import androidx.compose.foundation.text.input.setTextAndPlaceCursorAtEnd
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.ui.platform.LocalContext
+import androidx.core.net.toUri
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.vitorpamplona.amethyst.ui.actions.uploads.SelectedMedia
+import com.vitorpamplona.amethyst.ui.navigation.navs.Nav
+import com.vitorpamplona.amethyst.ui.note.nip22Comments.CommentPostViewModel
+import com.vitorpamplona.amethyst.ui.note.nip22Comments.GenericCommentPostScreen
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
+import kotlinx.collections.immutable.persistentListOf
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+@Composable
+fun UrlPostScreen(
+    url: String? = null,
+    message: String? = null,
+    attachment: String? = null,
+    replyId: HexKey? = null,
+    quoteId: HexKey? = null,
+    draftId: HexKey? = null,
+    accountViewModel: AccountViewModel,
+    nav: Nav,
+) {
+    val postViewModel: CommentPostViewModel = viewModel()
+    postViewModel.init(accountViewModel)
+
+    val context = LocalContext.current
+
+    LaunchedEffect(postViewModel, accountViewModel) {
+        url?.let {
+            UrlId.toScopeOrNull(it)?.let { normalizedUrl ->
+                postViewModel.newPostFor(UrlId(normalizedUrl))
+            }
+        }
+        replyId?.let { accountViewModel.getNoteIfExists(it) }?.let {
+            postViewModel.reply(it)
+        }
+        draftId?.let { accountViewModel.getNoteIfExists(it) }?.let {
+            postViewModel.editFromDraft(it)
+        }
+        quoteId?.let { accountViewModel.getNoteIfExists(it) }?.let {
+            postViewModel.quote(it)
+        }
+        message?.ifBlank { null }?.let {
+            postViewModel.message.setTextAndPlaceCursorAtEnd(it)
+            postViewModel.onMessageChanged()
+        }
+        attachment?.ifBlank { null }?.toUri()?.let {
+            withContext(Dispatchers.IO) {
+                val mediaType = context.contentResolver.getType(it)
+                postViewModel.selectImage(persistentListOf(SelectedMedia(it, mediaType)))
+            }
+        }
+    }
+
+    GenericCommentPostScreen(postViewModel, accountViewModel, nav)
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/UrlScreen.kt

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url
+
+import android.annotation.SuppressLint
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.vitorpamplona.amethyst.ui.feeds.WatchLifecycleAndUpdateModel
+import com.vitorpamplona.amethyst.ui.layouts.DisappearingScaffold
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.FabBottomBarPadded
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.navigation.topbars.TopBarExtensibleWithBackButton
+import com.vitorpamplona.amethyst.ui.screen.RefresheableFeedView
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.url.dal.UrlFeedViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource.UrlFilterAssemblerSubscription
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
+
+@Composable
+fun UrlScreen(
+    route: Route.Url,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    val url = UrlId.toScopeOrNull(route.url) ?: return
+
+    PrepareViewModelsUrlScreen(url, accountViewModel, nav)
+}
+
+@SuppressLint("StateFlowValueCalledInComposition")
+@Composable
+fun PrepareViewModelsUrlScreen(
+    url: String,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    val urlFeedViewModel: UrlFeedViewModel =
+        viewModel(
+            key = url + "UrlFeedViewModel",
+            factory =
+                UrlFeedViewModel.Factory(
+                    url,
+                    accountViewModel.account.followOutboxesOrProxy.flow.value,
+                    accountViewModel.account,
+                ),
+        )
+
+    UrlScreen(url, urlFeedViewModel, accountViewModel, nav)
+}
+
+@Composable
+fun UrlScreen(
+    url: String,
+    feedViewModel: UrlFeedViewModel,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    WatchLifecycleAndUpdateModel(feedViewModel)
+    UrlFilterAssemblerSubscription(url, accountViewModel)
+
+    DisappearingScaffold(
+        isInvertedLayout = false,
+        topBar = {
+            TopBarExtensibleWithBackButton(
+                title = {
+                    DisplayUrlHeader(url, Modifier.weight(1f))
+                },
+                popBack = nav::popBack,
+            )
+        },
+        floatingButton = {
+            FabBottomBarPadded(nav) {
+                NewUrlPostButton(url, accountViewModel, nav)
+            }
+        },
+        accountViewModel = accountViewModel,
+    ) {
+        RefresheableFeedView(
+            feedViewModel,
+            null,
+            accountViewModel = accountViewModel,
+            nav = nav,
+        )
+    }
+}
+
+@Composable
+fun DisplayUrlHeader(
+    url: String,
+    modifier: Modifier,
+) {
+    Text(
+        url,
+        fontWeight = FontWeight.Bold,
+        modifier = modifier,
+        maxLines = 1,
+        overflow = TextOverflow.Ellipsis,
+    )
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/dal/UrlFeedFilter.kt

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.dal
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.dal.AdditiveFeedFilter
+import com.vitorpamplona.amethyst.ui.dal.sortedByDefaultFeedOrder
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import com.vitorpamplona.quartz.nip22Comments.CommentEvent
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
+
+class UrlFeedFilter(
+    url: String,
+    val relays: Set<NormalizedRelayUrl>,
+    val account: Account,
+    val cache: LocalCache,
+) : AdditiveFeedFilter<Note>() {
+    val normalizedUrl = UrlId.toScopeOrNull(url).orEmpty()
+
+    override fun feedKey(): String = account.userProfile().pubkeyHex + "-" + normalizedUrl
+
+    override fun feed(): List<Note> {
+        val notes =
+            cache.notes.filterIntoSet { _, it ->
+                acceptableEvent(it, normalizedUrl)
+            }
+
+        return sort(notes)
+    }
+
+    override fun applyFilter(newItems: Set<Note>): Set<Note> = newItems.filterTo(HashSet()) { acceptableEvent(it, normalizedUrl) }
+
+    fun acceptableEvent(
+        it: Note,
+        url: String,
+    ): Boolean =
+        acceptableViaScope(it.event, url) &&
+            !it.isHiddenFor(account.hiddenUsers.flow.value) &&
+            account.isAcceptable(it)
+
+    fun acceptableViaScope(
+        event: com.vitorpamplona.quartz.nip01Core.core.Event?,
+        url: String,
+    ): Boolean = UrlId.toScopeOrNull(url)?.let { event is CommentEvent && event.isTaggedScope(it, UrlId::match) } ?: false
+
+    override fun sort(items: Set<Note>): List<Note> = items.sortedByDefaultFeedOrder()
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/dal/UrlFeedViewModel.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.dal
+
+import androidx.compose.runtime.Stable
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.ui.screen.AndroidFeedViewModel
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+
+@Stable
+class UrlFeedViewModel(
+    val url: String,
+    val relays: Set<NormalizedRelayUrl>,
+    val account: Account,
+) : AndroidFeedViewModel(
+        UrlFeedFilter(url, relays, account, LocalCache),
+    ) {
+    @Suppress("UNCHECKED_CAST")
+    class Factory(
+        val url: String,
+        val relays: Set<NormalizedRelayUrl>,
+        val account: Account,
+    ) : ViewModelProvider.Factory {
+        @Suppress("UNCHECKED_CAST")
+        override fun <T : ViewModel> create(modelClass: Class<T>): T = UrlFeedViewModel(url, relays, account) as T
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/datasource/FilterPostsByUrl.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource
+
+import com.vitorpamplona.amethyst.service.relays.SincePerRelayMap
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.home.datasource.nip22Comments.CommentKinds
+import com.vitorpamplona.quartz.nip01Core.relay.client.pool.RelayBasedFilter
+import com.vitorpamplona.quartz.nip01Core.relay.filters.Filter
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
+
+fun filterPostsByUrl(
+    url: String,
+    relays: Set<NormalizedRelayUrl>,
+    since: SincePerRelayMap?,
+): List<RelayBasedFilter> {
+    val normalizedUrl = UrlId.toScopeOrNull(url) ?: return emptyList()
+    val urlScopeMap = mapOf("I" to listOf(normalizedUrl))
+
+    return relays.map { relay ->
+        val since = since?.get(relay)?.time
+        RelayBasedFilter(
+            relay = relay,
+            filter =
+                Filter(
+                    tags = urlScopeMap,
+                    kinds = CommentKinds,
+                    limit = 100,
+                    since = since,
+                ),
+        )
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/datasource/UrlFeedFilterSubAssembler.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource
+
+import com.vitorpamplona.amethyst.service.relayClient.eoseManagers.PerUniqueIdEoseManager
+import com.vitorpamplona.amethyst.service.relays.SincePerRelayMap
+import com.vitorpamplona.quartz.nip01Core.relay.client.INostrClient
+import com.vitorpamplona.quartz.nip01Core.relay.client.pool.RelayBasedFilter
+
+class UrlFeedFilterSubAssembler(
+    client: INostrClient,
+    allKeys: () -> Set<UrlQueryState>,
+) : PerUniqueIdEoseManager<UrlQueryState, String>(client, allKeys) {
+    override fun updateFilter(
+        key: UrlQueryState,
+        since: SincePerRelayMap?,
+    ): List<RelayBasedFilter> = filterPostsByUrl(key.normalizedUrl, key.relays, since)
+
+    override fun id(key: UrlQueryState) = key.normalizedUrl
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/datasource/UrlFilterAssembler.kt

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource
+
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.commons.relayClient.composeSubscriptionManagers.ComposeSubscriptionManager
+import com.vitorpamplona.quartz.nip01Core.relay.client.INostrClient
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import com.vitorpamplona.quartz.nip73ExternalIds.urls.UrlId
+
+class UrlQueryState(
+    val url: String,
+    val relays: Set<NormalizedRelayUrl>,
+) {
+    val normalizedUrl = UrlId.toScopeOrNull(url).orEmpty()
+}
+
+@Stable
+class UrlFilterAssembler(
+    client: INostrClient,
+) : ComposeSubscriptionManager<UrlQueryState>() {
+    val group =
+        listOf(
+            UrlFeedFilterSubAssembler(client, ::allKeys),
+        )
+
+    override fun invalidateKeys() = invalidateFilters()
+
+    override fun invalidateFilters() = group.forEach { it.invalidateFilters() }
+
+    override fun destroy() = group.forEach { it.destroy() }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/datasource/UrlFilterAssemblerSubscription.kt

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource
+
+import android.annotation.SuppressLint
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import com.vitorpamplona.amethyst.commons.relayClient.subscriptions.LifecycleAwareKeyDataSourceSubscription
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@SuppressLint("StateFlowValueCalledInComposition")
+@Composable
+fun UrlFilterAssemblerSubscription(
+    url: String,
+    accountViewModel: AccountViewModel,
+) {
+    val state =
+        remember(url) {
+            UrlQueryState(url, accountViewModel.account.followOutboxesOrProxy.flow.value)
+        }
+
+    LifecycleAwareKeyDataSourceSubscription(state, accountViewModel.dataSources().urls)
+}

amethyst/src/test/java/com/vitorpamplona/amethyst/URIParserTest.kt

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst
+
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.urlRoute
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Test
+import java.net.URLEncoder
+
+class URIParserTest {
+    @Test
+    fun parsesEncodedUrlRoutes() {
+        val url = "HTTPS://Example.com/path?b=2&a=1#section"
+        val route = urlRoute("nostr:url?id=${URLEncoder.encode(url, Charsets.UTF_8.name())}")
+
+        assertEquals(Route.Url("https://example.com/path?b=2&a=1"), route)
+    }
+
+    @Test
+    fun ignoresMalformedEncodedUrlRoutes() {
+        assertNull(urlRoute("nostr:url?id=%"))
+    }
+}

amethyst/src/test/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/url/datasource/FilterPostsByUrlTest.kt

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.url.datasource
+
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.home.datasource.nip22Comments.CommentKinds
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class FilterPostsByUrlTest {
+    @Test
+    fun normalizesUrlAndQueriesNip22UrlScope() {
+        val relay = NormalizedRelayUrl("wss://relay.example/")
+        val filters = filterPostsByUrl("HTTPS://Example.com/path?b=2&a=1#section", setOf(relay), null)
+
+        assertEquals(1, filters.size)
+        assertEquals(relay, filters[0].relay)
+        assertEquals(CommentKinds, filters[0].filter.kinds)
+        assertEquals(mapOf("I" to listOf("https://example.com/path?b=2&a=1")), filters[0].filter.tags)
+        assertEquals(100, filters[0].filter.limit)
+    }
+
+    @Test
+    fun returnsNoFiltersForMalformedUrls() {
+        val relay = NormalizedRelayUrl("wss://relay.example/")
+
+        val filters = filterPostsByUrl("https://", setOf(relay), null)
+
+        assertTrue(filters.isEmpty())
+    }
+}

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip73ExternalIds/urls/UrlId.kt

@@ -43,6 +43,11 @@ class UrlId(
 
         fun toScope(url: String) = Rfc3986.normalizeAndRemoveFragment(url)
 
+        fun toScopeOrNull(url: String) =
+            runCatching { toScope(url) }
+                .getOrNull()
+                ?.takeIf { parse(it) != null }
+
         fun toKind(url: String) = KIND
 
         fun match(