Added dialog to allow user to attempt opening a file as plain text if no app is registered for the deduced mime type from it's extension

app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt

@@ -542,8 +542,27 @@ class DetailChatRoomFragment : MasterFragment() {
             startActivity(intent)
         } catch (anfe: ActivityNotFoundException) {
             Log.e("[Chat Message] Couldn't find an activity to handle MIME type: $type")
-            val activity = requireActivity() as MainActivity
-            activity.showSnackBar(R.string.chat_room_cant_open_file_no_app_found)
+
+            val dialogViewModel = DialogViewModel(getString(R.string.dialog_try_open_file_as_text_body), getString(R.string.dialog_try_open_file_as_text_title))
+            val dialog = DialogUtils.getDialog(requireContext(), dialogViewModel)
+
+            dialogViewModel.showCancelButton {
+                dialog.dismiss()
+            }
+
+            dialogViewModel.showOkButton({
+                dialog.dismiss()
+                intent.setDataAndType(contentUri, "text/plain")
+                try {
+                    startActivity(intent)
+                } catch (anfe: ActivityNotFoundException) {
+                    Log.e("[Chat Message] Couldn't find an activity to handle text/plain MIME type")
+                    val activity = requireActivity() as MainActivity
+                    activity.showSnackBar(R.string.chat_room_cant_open_file_no_app_found)
+                }
+            })
+
+            dialog.show()
         }
     }
 }

app/src/main/java/org/linphone/activities/main/viewmodels/DialogViewModel.kt

@@ -41,6 +41,7 @@ class DialogViewModel(val message: String, val title: String = "") : ViewModel()
 
     init {
         doNotAskAgain.value = false
+        showTitle = title.isNotEmpty()
     }
 
     var showCancel: Boolean = false

app/src/main/java/org/linphone/utils/LinphoneUtils.kt

@@ -79,7 +79,7 @@ class LinphoneUtils {
         fun deleteFilesAttachedToChatMessage(chatMessage: ChatMessage) {
             for (content in chatMessage.contents) {
                 val filePath = content.filePath
-                if (filePath != null) {
+                if (filePath != null && filePath.isNotEmpty()) {
                     Log.i("[Linphone Utils] Deleting file $filePath")
                     FileUtils.deleteFile(filePath)
                 }

app/src/main/res/values/strings.xml

@@ -560,6 +560,8 @@
         <item quantity="other">@string/dialog_default_delete_many</item>
     </plurals>
     <string name="dialog_update_available">An update is available</string>
+    <string name="dialog_try_open_file_as_text_title">No app found for this kind of file</string>
+    <string name="dialog_try_open_file_as_text_body">Would you like to try opening it as a plain text file?</string>
 
     <!-- Content description -->
     <string name="content_description_add_sip_address_field">Add a SIP address field</string>