from typing import Generator
import pytest
from unittest.mock import patch, MagicMock
from src import ai_client
from src.gui_2 import App

@pytest.fixture
def app_instance() -> Generator[App, None, None]:
 with (
  patch('src.models.load_config', return_value={'ai': {'provider': 'gemini', 'model': 'gemini-2.5-flash-lite'}, 'projects': {}}),
  patch('src.gui_2.save_config'),
  patch('src.gui_2.project_manager'),
  patch('src.gui_2.session_logger'),
  patch('src.gui_2.immapp.run'),
  patch('src.app_controller.AppController._load_active_project'),
  patch('src.app_controller.AppController._fetch_models'),
  patch.object(App, '_load_fonts'),
  patch.object(App, '_post_init'),
  patch('src.app_controller.AppController._prune_old_logs'),
  patch('src.app_controller.AppController.start_services'),
  # Do not patch _init_ai_and_hooks to ensure _settable_fields is initialized
  patch('src.api_hooks.HookServer'),
  patch('src.ai_client.set_provider'),
  patch('src.ai_client.reset_session')
 ):
  app = App()
  yield app

def test_redundant_calls_in_process_pending_gui_tasks(app_instance: App) -> None:
 app_instance.controller._pending_gui_tasks = [
  {'action': 'set_value', 'item': 'current_provider', 'value': 'anthropic'}
 ]
 with patch('src.ai_client.set_provider') as mock_set_provider, \
      patch('src.ai_client.reset_session') as mock_reset_session:
  app_instance.controller._process_pending_gui_tasks()
  assert mock_set_provider.call_count == 1
  assert mock_reset_session.call_count == 1

def test_gcli_path_updates_adapter(app_instance: App) -> None:
 app_instance.controller.current_provider = 'gemini_cli'
 app_instance.controller._pending_gui_tasks = [
  {'action': 'set_value', 'item': 'gcli_path', 'value': '/new/path/to/gemini'}
 ]
 # Initialize adapter if it doesn't exist (it shouldn't in mock env)
 ai_client._gemini_cli_adapter = None
 app_instance.controller._process_pending_gui_tasks()
 assert ai_client._gemini_cli_adapter is not None
 assert ai_client._gemini_cli_adapter.binary_path == '/new/path/to/gemini'