android: connect channel reply navigation and camera context

tools/chatgui-android/app/src/main/java/com/utun/chat/MainActivity.kt

@@ -206,6 +206,7 @@ class MainActivity : AppCompatActivity() {
                     if (it.startsWith("dm:")) ConversationTarget.Pm(it.removePrefix("dm:")) else ConversationTarget.Channel(it)
                 }
                 var photoMessage by remember { mutableStateOf<Message?>(null) }
+                var photoTargetId by rememberSaveable { mutableStateOf<String?>(null) }
                 var hadCall by rememberSaveable { mutableStateOf(false) }
                 var screenBeforeCall by rememberSaveable { mutableStateOf<Screen?>(null) }
                 val snackbarHostState = remember { SnackbarHostState() }
@@ -371,8 +372,14 @@ class MainActivity : AppCompatActivity() {
                                         onBack = { screen = Screen.ChannelList },
                                         onPlayVideo = { msg -> videoMessage = msg },
                                         onViewPhoto = { msg -> photoMessage = msg },
-                                        onRecordVideo = { videoTargetId = ConversationTarget.Channel(channel.id).nativeId; screen = Screen.VideoRecord },
-                                        onCapturePhoto = { screen = Screen.PhotoRecord }
+                                        onRecordVideo = {
+                                            val target = ConversationTarget.Channel(channel.id)
+                                            videoTargetId = target.nativeId; vm.captureCameraReply(target); screen = Screen.VideoRecord
+                                        },
+                                        onCapturePhoto = {
+                                            photoTargetId = channel.id
+                                            vm.captureCameraReply(ConversationTarget.Channel(channel.id)); screen = Screen.PhotoRecord
+                                        }
                                     )
                                 }
                             }
@@ -399,7 +406,10 @@ class MainActivity : AppCompatActivity() {
                                         messages = dmMessages,
                                         viewModel = vm,
                                         onSendMessage = { vm.sendDmMessage(it) },
-                                        onRecordVideo = { videoTargetId = ConversationTarget.Pm(dm.convId).nativeId; screen = Screen.VideoRecord },
+                                        onRecordVideo = {
+                                            val target = ConversationTarget.Pm(dm.convId)
+                                            videoTargetId = target.nativeId; vm.captureCameraReply(target); screen = Screen.VideoRecord
+                                        },
                                         onPlayVideo = { videoMessage = it },
                                         onBack = { vm.closeDm(); screen = Screen.ChannelList }
                                     )
@@ -417,7 +427,7 @@ class MainActivity : AppCompatActivity() {
                                 if (target != null) {
                                     VideoRecordScreen(
                                         onSend = { path ->
-                                            vm.sendVideoMessage(path, target)
+                                            vm.sendVideoMessage(path, target, vm.cameraReply)
                                             screen = if (target is ConversationTarget.Pm) Screen.Dm else Screen.Chat
                                         },
                                         onClose = { screen = if (target is ConversationTarget.Pm) Screen.Dm else Screen.Chat }
@@ -429,7 +439,7 @@ class MainActivity : AppCompatActivity() {
                                 if (channel != null) {
                                     PhotoRecordScreen(
                                         onSend = { path, width, height ->
-                                            vm.sendPhotoMessage(path, width, height)
+                                            vm.sendPhotoMessage(path, width, height, photoTargetId ?: channel.id, vm.cameraReply)
                                             screen = Screen.Chat
                                         },
                                         onClose = { screen = Screen.Chat }

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChatScreen.kt

@@ -117,10 +117,30 @@ fun ChatScreen(
     }
 
     val playbackState by viewModel.playbackState.collectAsState()
+    val originals by viewModel.replyOriginals.collectAsState()
+    val anchor by viewModel.historyAnchor.collectAsState()
+    val jump by viewModel.messageJump.collectAsState()
+    val originalMissing by viewModel.originalMissing.collectAsState()
+    var highlighted by remember(channel.id) { mutableStateOf("") }
+    if (originalMissing) AlertDialog(onDismissRequest = viewModel::dismissOriginalMissing,
+        text = { Text(stringResource(R.string.reply_original_missing)) },
+        confirmButton = { TextButton(onClick = viewModel::dismissOriginalMissing) { Text(stringResource(R.string.close)) } })
+
+    LaunchedEffect(jump) {
+        val destination = jump ?: return@LaunchedEffect
+        val index = if (destination.messageId.isEmpty()) 0
+            else messages.asReversed().indexOfFirst { it.messageId == destination.messageId }.let { if (it < 0) -1 else it + 1 }
+        if (index >= 0) {
+            listState.scrollToItem(index)
+            highlighted = destination.messageId
+            kotlinx.coroutines.delay(1500)
+            highlighted = ""
+        }
+    }
 
     /* своё сообщение — подтягиваемся вниз (в reverseLayout индекс 0 — это низ) */
     LaunchedEffect(messages.size) {
-        if (messages.lastOrNull()?.isOutgoing == true) {
+        if (anchor.isEmpty() && messages.lastOrNull()?.isOutgoing == true) {
             listState.scrollToItem(0)
         }
     }
@@ -196,8 +216,11 @@ fun ChatScreen(
                 onDownloadFile = { viewModel.downloadAttachment(it) },
                 onOpenFile = { if (it.filePath.isNotEmpty()) { pendingSaveFilePath = it.filePath; saveFileLauncher.launch(it.text) } },
                 onOpenImage = onViewPhoto, onPlayVideo = onPlayVideo, onInviteLink = viewModel::openInviteLink,
-                reactionCatalog = reactionCatalog, onVote = viewModel::vote, onReact = viewModel::react, authorName = viewModel::radioName
+                reactionCatalog = reactionCatalog, onVote = viewModel::vote, onReact = viewModel::react, authorName = viewModel::radioName,
+                onReply = viewModel::selectReply, onOriginal = viewModel::showOriginal, originals = originals, highlightedId = highlighted
             )
+            if (anchor.isNotEmpty()) FilledTonalButton(onClick = viewModel::showLatestMessages,
+                modifier = Modifier.align(Alignment.BottomEnd).padding(12.dp)) { Text(stringResource(R.string.reply_latest)) }
             if (radioActive && !overlayShown) {
                 RadioPttButton(
                     modifier = Modifier.align(Alignment.TopCenter).padding(top = 12.dp),