Open Android web links from shared channel and PM message UI

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/components/ConversationMessages.kt

@@ -2,8 +2,14 @@ package com.utun.chat.ui.components
 
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.*
-import androidx.compose.runtime.Composable
+import androidx.compose.runtime.*
-import androidx.compose.runtime.LaunchedEffect
+import android.content.Intent
+import android.content.ActivityNotFoundException
+import android.net.Uri
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.drawWithCache
 import androidx.compose.ui.geometry.Offset
@@ -14,11 +20,13 @@ import androidx.compose.ui.graphics.ShaderBrush
 import androidx.compose.ui.graphics.TileMode
 import androidx.compose.ui.graphics.drawscope.scale
 import androidx.compose.ui.res.imageResource
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.utun.chat.R
 import com.utun.chat.data.ConversationTarget
 import com.utun.chat.data.LogManager
 import com.utun.chat.data.Message
+import com.utun.chat.data.MessageLinks
 import com.utun.chat.viewmodel.ChatViewModel
 
 /** Общий список; направление включено в ключ, поскольку PM имеет два потока seq. */
@@ -29,6 +37,30 @@ fun ConversationMessages(target: ConversationTarget, messages: List<Message>, st
                          onOpenFile: (Message) -> Unit, onPlayVideo: (Message) -> Unit,
                          onDownloadFile: (Message) -> Unit = {}, onOpenImage: (Message) -> Unit = {},
                          onInviteLink: (String) -> Unit = {}) {
+    val context = LocalContext.current
+    var openFailed by remember { mutableStateOf(false) }
+    val onLink: (String) -> Unit = { link ->
+        if (link.startsWith("utun://")) onInviteLink(link)
+        else if (!MessageLinks.isWebUrl(link)) {
+            LogManager.addLog("ERROR", "LINK", "invalid external message link: bytes=${link.length}")
+            openFailed = true
+        } else {
+            val uri = Uri.parse(link)
+            try {
+                context.startActivity(Intent(Intent.ACTION_VIEW, uri))
+                LogManager.addLog("INFO", "LINK", "external open requested: scheme=${uri.scheme} host=${uri.host}")
+            } catch (e: ActivityNotFoundException) {
+                LogManager.addLog("ERROR", "LINK", "no URL handler: scheme=${uri.scheme} host=${uri.host} error=${e.message}")
+                openFailed = true
+            } catch (e: SecurityException) {
+                LogManager.addLog("ERROR", "LINK", "URL handler denied: scheme=${uri.scheme} host=${uri.host} error=${e.message}")
+                openFailed = true
+            }
+        }
+    }
+    if (openFailed) AlertDialog(onDismissRequest = { openFailed = false },
+        text = { Text(stringResource(R.string.link_open_failed)) },
+        confirmButton = { TextButton(onClick = { openFailed = false }) { Text(stringResource(R.string.close)) } })
     val background = ImageBitmap.imageResource(R.drawable.chat_background)
     LaunchedEffect(background) {
         LogManager.addLog("DEBUG", "UI", "Chat background ready: desktop bg.png tile=${background.width}x${background.height}")
@@ -45,7 +77,7 @@ fun ConversationMessages(target: ConversationTarget, messages: List<Message>, st
     LazyColumn(modifier = modifier.then(backgroundModifier), state = state, reverseLayout = true) {
         item { Spacer(Modifier.height(8.dp)) }
         items(messages.reversed(), key = { "${target.nativeId}:${it.isOutgoing}:${it.id}" }) { message ->
-            MessageBubble(message, playbackState, onPlayVoice, onSeekVoice, onDownloadFile, onOpenFile, onOpenImage, onPlayVideo, onInviteLink)
+            MessageBubble(message, playbackState, onPlayVoice, onSeekVoice, onDownloadFile, onOpenFile, onOpenImage, onPlayVideo, onLink)
         }
     }
 }