feat: Improve macOS app chooser functionality and enhance drag operation success criteria

src/webdrop_bridge/core/drag_interceptor.py

@@ -146,7 +146,7 @@ class DragInterceptor(QWidget):
             file_paths: Single local file path or list of local file paths
 
         Returns:
-            True if drag was created successfully
+            True if drag was initiated successfully
         """
         try:
             # Normalize to list
@@ -170,10 +170,15 @@ class DragInterceptor(QWidget):
             # drag.setPixmap(...)
 
             # Start drag operation (blocks until drop or cancel)
-            # Qt.CopyAction allows copying files
+            # In RDP/remote environments, drag.exec() may not return the expected result
+            # even though the drag was successful. We accept the drag as successful if
+            # it completes without exception.
             result = drag.exec(Qt.DropAction.CopyAction)
 
-            return result == Qt.DropAction.CopyAction
+            # Accept any drop action result (including NoDropAction) as successful
+            # in remote environments like RDP where OS feedback is unreliable.
+            logger.debug(f"Drag operation completed with result: {result}")
+            return True
 
         except Exception as e:
             logger.exception(f"Error creating native drag: {e}")

src/webdrop_bridge/ui/main_window.py

@@ -1185,20 +1185,55 @@ class MainWindow(QMainWindow):
 
             if sys.platform == "darwin":
                 # Prompt for an app and open the file with the selected app.
-                script = (
-                    "on run argv\n"
-                    "set targetFile to POSIX file (item 1 of argv)\n"
-                    "set chosenApp to choose application\n"
-                    'tell application "Finder" to open targetFile using chosenApp\n'
-                    "end run"
-                )
-                result = subprocess.run(
-                    ["osascript", "-e", script, file_path],
+                # Use AppleScript with choose application and open the file.
+                # This more reliably opens files with chosen applications.
+                # Use a simple, more direct approach
+                # Get the chosen app via AppleScript, then use open command
+                get_app_script = '''choose application with title "Select an application to open the file"'''
+                try:
+                    # Get the chosen application
+                    app_result = subprocess.run(
+                        ["osascript", "-e", get_app_script],
                         check=False,
                         capture_output=True,
                         text=True,
+                        timeout=30,
                     )
-                return result.returncode == 0
+                    
+                    if app_result.returncode != 0:
+                        logger.warning(f"User cancelled app chooser or error occurred: {app_result.stderr}")
+                        return False
+                    
+                    # Get the application name (strip whitespace)
+                    chosen_app = app_result.stdout.strip()
+                    if not chosen_app:
+                        logger.warning("No application was selected")
+                        return False
+                    
+                    logger.info(f"User selected app: {chosen_app}")
+                    
+                    # Now open the file with the chosen app using the 'open' command
+                    open_result = subprocess.run(
+                        ["open", "-a", chosen_app, normalized_path],
+                        check=False,
+                        capture_output=True,
+                        text=True,
+                        timeout=10,
+                    )
+                    
+                    if open_result.returncode == 0:
+                        logger.info(f"Opened '{normalized_path}' with '{chosen_app}'")
+                        return True
+                    else:
+                        logger.warning(f"Failed to open file with '{chosen_app}': {open_result.stderr}")
+                        return False
+                        
+                except subprocess.TimeoutExpired:
+                    logger.warning("App chooser timed out")
+                    return False
+                except Exception as e:
+                    logger.warning(f"Error in macOS app chooser: {e}")
+                    return False
 
             logger.warning(f"Open-with chooser not implemented for platform: {sys.platform}")
             return False

tests/unit/test_main_window.py

@@ -206,11 +206,31 @@ class TestMainWindowOpenWith:
         test_file = sample_config.allowed_roots[0] / "open_with_macos.txt"
         test_file.write_text("test")
 
-        class _Result:
+        call_count = [0]  # Use list to make it mutable in nested function
+        
+        class _AppChooseResult:
             returncode = 0
+            stdout = "TextEdit"  # Simulated chosen app name
+        
+        class _OpenResult:
+            returncode = 0
+            stdout = ""
+        
+        def mock_run(*args, **kwargs):
+            """Mock subprocess.run with two different behaviors per call."""
+            call_count[0] += 1
+            # First call: osascript to choose application
+            if call_count[0] == 1:
+                return _AppChooseResult()
+            # Second call: open command to open the file
+            elif call_count[0] == 2:
+                return _OpenResult()
+            else:
+                raise AssertionError(f"Unexpected call #{call_count[0]} to subprocess.run")
+        
         
         with patch("webdrop_bridge.ui.main_window.sys.platform", "darwin"):
-            with patch("webdrop_bridge.ui.main_window.subprocess.run", return_value=_Result()):
+            with patch("webdrop_bridge.ui.main_window.subprocess.run", side_effect=mock_run):
                 assert window._open_with_app_chooser(str(test_file)) is True
 
     def test_open_with_app_chooser_unsupported_platform(self, qtbot, sample_config):