Allow opening files in chat bubble

app/src/main/java/org/linphone/activities/chat_bubble/ChatBubbleActivity.kt

@@ -19,8 +19,11 @@
  */
 package org.linphone.activities.chat_bubble
 
+import android.content.ActivityNotFoundException
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
+import android.webkit.MimeTypeMap
 import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
@@ -28,6 +31,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import org.linphone.LinphoneApplication
 import org.linphone.LinphoneApplication.Companion.coreContext
 import org.linphone.R
 import org.linphone.activities.GenericActivity
@@ -39,6 +43,7 @@ import org.linphone.core.ChatRoom
 import org.linphone.core.Factory
 import org.linphone.core.tools.Log
 import org.linphone.databinding.ChatBubbleActivityBinding
+import org.linphone.utils.FileUtils
 
 class ChatBubbleActivity : GenericActivity() {
     private lateinit var binding: ChatBubbleActivityBinding
@@ -107,6 +112,12 @@ class ChatBubbleActivity : GenericActivity() {
         // Disable context menu on each message
         adapter.disableContextMenu()
 
+        adapter.openContentEvent.observe(this, {
+            it.consume { path ->
+                openFile(path)
+            }
+        })
+
         val layoutManager = LinearLayoutManager(this)
         layoutManager.stackFromEnd = true
         binding.chatMessagesList.layoutManager = layoutManager
@@ -163,4 +174,41 @@ class ChatBubbleActivity : GenericActivity() {
             binding.chatMessagesList.scrollToPosition(adapter.itemCount - 1)
         }
     }
+
+    private fun openFile(contentFilePath: String) {
+        val intent = Intent(Intent.ACTION_VIEW)
+        val contentUri: Uri = FileUtils.getPublicFilePath(this, contentFilePath)
+        val filePath: String = contentUri.toString()
+        Log.i("[Chat Bubble] Trying to open file: $filePath")
+        var type: String? = null
+        val extension = FileUtils.getExtensionFromFileName(filePath)
+
+        if (extension.isNotEmpty()) {
+            Log.i("[Chat Bubble] Found extension $extension")
+            type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
+        } else {
+            Log.e("[Chat Bubble] Couldn't find extension")
+        }
+
+        if (type != null) {
+            Log.i("[Chat Bubble] Found matching MIME type $type")
+        } else {
+            type = "file/$extension"
+            Log.e("[Chat Bubble] Can't get MIME type from extension: $extension, will use $type")
+        }
+
+        intent.setDataAndType(contentUri, type)
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+
+        try {
+            startActivity(intent)
+
+            if (LinphoneApplication.corePreferences.enableAnimations) {
+                overridePendingTransition(R.anim.enter_right, R.anim.exit_left)
+            }
+        } catch (anfe: ActivityNotFoundException) {
+            Log.e("[Chat Bubble] Couldn't find an activity to handle MIME type: $type")
+        }
+    }
 }