import { http, HttpResponse } from 'msw';
import { setupServer } from 'msw/node';

/**
 * Создание mock HTTP сервера для тестирования
 */
export function createMockServer() {
  const handlers = [
    // Mock для успешного GET запроса
    http.get('https://api.example.com/users', () => {
      return HttpResponse.json([
        { id: '1', email: 'user1@example.com', name: 'User 1' },
        { id: '2', email: 'user2@example.com', name: 'User 2' },
      ]);
    }),

    // Mock для GET с параметрами
    http.get('https://api.example.com/users/:id', ({ params }) => {
      const { id } = params;
      if (id === '1') {
        return HttpResponse.json({ id: '1', email: 'user1@example.com', name: 'User 1' });
      }
      return HttpResponse.json({ error: 'Not found' }, { status: 404 });
    }),

    // Mock для POST запроса
    http.post('https://api.example.com/users', async ({ request }) => {
      const body = await request.json() as Record<string, any>;
      return HttpResponse.json(
        { id: '3', ...body },
        { status: 201 }
      );
    }),

    // Mock для PATCH запроса
    http.patch('https://api.example.com/users/:id', async ({ request, params }) => {
      const body = await request.json() as Record<string, any>;
      return HttpResponse.json({ id: params.id, ...body });
    }),

    // Mock для DELETE запроса
    http.delete('https://api.example.com/users/:id', () => {
      return new HttpResponse(null, { status: 204 });
    }),

    // Mock для авторизации
    http.post('https://api.example.com/auth/login', async ({ request }) => {
      const body = await request.json() as any;
      if (body.email === 'test@example.com' && body.password === 'password') {
        return HttpResponse.json({ token: 'mock-jwt-token' });
      }
      return HttpResponse.json({ error: 'Unauthorized' }, { status: 401 });
    }),

    // Mock для защищенного endpoint
    http.get('https://api.example.com/profile', ({ request }) => {
      const auth = request.headers.get('Authorization');
      if (auth && auth.startsWith('Bearer ')) {
        return HttpResponse.json({ id: '1', email: 'test@example.com' });
      }
      return HttpResponse.json({ error: 'Unauthorized' }, { status: 401 });
    }),

    // Mock для ошибки сервера
    http.get('https://api.example.com/error', () => {
      return HttpResponse.json({ error: 'Internal Server Error' }, { status: 500 });
    }),

    // Mock для network error
    http.get('https://api.example.com/network-error', () => {
      return HttpResponse.error();
    }),
  ];

  const server = setupServer(...handlers);

  return {
    server,
    start: () => server.listen({ onUnhandledRequest: 'warn' }),
    stop: () => server.close(),
    reset: () => server.resetHandlers(),
  };
}

/**
 * Тип для mock сервера
 */
export type MockServer = ReturnType<typeof createMockServer>;