import sys
import unittest
from unittest.mock import patch, MagicMock
import gui_2
import pytest
import importlib
from pathlib import Path
from fastapi.testclient import TestClient

class TestHeadlessAPI(unittest.TestCase):
 def setUp(self) -> None:
  with patch('gui_2.session_logger.open_session'), \
  patch('gui_2.ai_client.set_provider'), \
  patch('gui_2.session_logger.close_session'):
   self.app_instance = gui_2.App()
   # Set a default API key for tests
   self.test_api_key = "test-secret-key"
   self.app_instance.config["headless"] = {"api_key": self.test_api_key}
   self.headers = {"X-API-KEY": self.test_api_key}
   # Clear any leftover state
   self.app_instance._pending_actions = {}
   self.app_instance._pending_dialog = None
   self.api = self.app_instance.create_api()
   self.client = TestClient(self.api)

 def test_health_endpoint(self) -> None:
  response = self.client.get("/health")
  self.assertEqual(response.status_code, 200)
  self.assertEqual(response.json(), {"status": "ok"})

 def test_status_endpoint_unauthorized(self) -> None:
  with patch.dict(self.app_instance.config, {"headless": {"api_key": "some-required-key"}}):
   response = self.client.get("/status")
   self.assertEqual(response.status_code, 403)

 def test_status_endpoint_authorized(self) -> None:
  headers = {"X-API-KEY": "test-secret-key"}
  with patch.dict(self.app_instance.config, {"headless": {"api_key": "test-secret-key"}}):
   response = self.client.get("/status", headers=headers)
   self.assertEqual(response.status_code, 200)

 def test_generate_endpoint(self) -> None:
  payload = {
   "prompt": "Hello AI"
  }
  # Mock ai_client.send and get_comms_log
  with patch('gui_2.ai_client.send') as mock_send, \
  patch('gui_2.ai_client.get_comms_log') as mock_log:
   mock_send.return_value = "Hello from Mock AI"
   mock_log.return_value = [{
     "kind": "response",
     "payload": {
      "usage": {"input_tokens": 10, "output_tokens": 5}
     }
    }]
   response = self.client.post("/api/v1/generate", json=payload, headers=self.headers)
   self.assertEqual(response.status_code, 200)
   data = response.json()
   self.assertEqual(data["text"], "Hello from Mock AI")
   self.assertIn("metadata", data)
   self.assertEqual(data["usage"]["input_tokens"], 10)

 def test_pending_actions_endpoint(self) -> None:
  with patch('gui_2.uuid.uuid4', return_value="test-action-id"):
   dialog = gui_2.ConfirmDialog("dir", ".")
   self.app_instance._pending_actions[dialog._uid] = dialog
   response = self.client.get("/api/v1/pending_actions", headers=self.headers)
   self.assertEqual(response.status_code, 200)
   data = response.json()
   self.assertEqual(len(data), 1)
   self.assertEqual(data[0]["action_id"], "test-action-id")

 def test_confirm_action_endpoint(self) -> None:
  with patch('gui_2.uuid.uuid4', return_value="test-confirm-id"):
   dialog = gui_2.ConfirmDialog("dir", ".")
   self.app_instance._pending_actions[dialog._uid] = dialog
   payload = {"approved": True}
   response = self.client.post("/api/v1/confirm/test-confirm-id", json=payload, headers=self.headers)
   self.assertEqual(response.status_code, 200)
   self.assertTrue(dialog._done)
   self.assertTrue(dialog._approved)

 def test_list_sessions_endpoint(self) -> None:
  Path("logs").mkdir(exist_ok=True)
  # Create a dummy log
  dummy_log = Path("logs/test_session_api.log")
  dummy_log.write_text("dummy content")
  try:
   response = self.client.get("/api/v1/sessions", headers=self.headers)
   self.assertEqual(response.status_code, 200)
   data = response.json()
   self.assertIn("test_session_api.log", data)
  finally:
   if dummy_log.exists():
    dummy_log.unlink()

 def test_get_context_endpoint(self) -> None:
  response = self.client.get("/api/v1/context", headers=self.headers)
  self.assertEqual(response.status_code, 200)
  data = response.json()
  self.assertIn("files", data)
  self.assertIn("screenshots", data)
  self.assertIn("files_base_dir", data)

 def test_endpoint_no_api_key_configured(self) -> None:
  with patch.dict(self.app_instance.config, {"headless": {"api_key": ""}}):
   response = self.client.get("/status", headers=self.headers)
   self.assertEqual(response.status_code, 403)
   self.assertEqual(response.json()["detail"], "API Key not configured on server")

class TestHeadlessStartup(unittest.TestCase):

 @patch('gui_2.immapp.run')
 @patch('gui_2.api_hooks.HookServer')
 @patch('gui_2.save_config')
 @patch('gui_2.ai_client.cleanup')
 @patch('uvicorn.run') # Mock uvicorn.run to prevent hanging
 def test_headless_flag_prevents_gui_run(self, mock_uvicorn_run: MagicMock, mock_cleanup: MagicMock, mock_save_config: MagicMock, mock_hook_server: MagicMock, mock_immapp_run: MagicMock) -> None:
  test_args = ["gui_2.py", "--headless"]
  with patch.object(sys, 'argv', test_args):
   with patch('gui_2.session_logger.close_session'), \
   patch('gui_2.session_logger.open_session'):
    app = gui_2.App()
    # Mock _fetch_models to avoid network calls
    app._fetch_models = MagicMock()
    app.run()
    # Expectation: immapp.run should NOT be called in headless mode
    mock_immapp_run.assert_not_called()
    # Expectation: uvicorn.run SHOULD be called
    mock_uvicorn_run.assert_called_once()

 @patch('gui_2.immapp.run')
 def test_normal_startup_calls_gui_run(self, mock_immapp_run: MagicMock) -> None:
  test_args = ["gui_2.py"]
  with patch.object(sys, 'argv', test_args):
  # In normal mode, it should still call immapp.run
   with patch('gui_2.api_hooks.HookServer'), \
   patch('gui_2.save_config'), \
   patch('gui_2.ai_client.cleanup'), \
   patch('gui_2.session_logger.close_session'), \
   patch('gui_2.session_logger.open_session'):
    app = gui_2.App()
    app._fetch_models = MagicMock()
    app.run()
    mock_immapp_run.assert_called_once()

def test_fastapi_installed() -> None:
 """Verify that fastapi is installed."""
 try:
  importlib.import_module("fastapi")
 except ImportError:
  pytest.fail("fastapi is not installed")

def test_uvicorn_installed() -> None:
 """Verify that uvicorn is installed."""
 try:
  importlib.import_module("uvicorn")
 except ImportError:
  pytest.fail("uvicorn is not installed")

if __name__ == "__main__":
 unittest.main()