// Пусто = тот же origin (фронт отдаётся самим API → один туннель для Telegram).
// Для dev в браузере (Vite на :5173) задай VITE_API_URL=http://localhost:3000 в apps/web/.env
const BASE_URL = import.meta.env.VITE_API_URL ?? '';

async function request(path, options = {}) {
  const token = localStorage.getItem('token');
  const headers = {
    'Content-Type': 'application/json',
    ...(options.headers || {}),
  };

  if (token) {
    headers['Authorization'] = `Bearer ${token}`;
  }

  const config = {
    ...options,
    headers,
  };

  try {
    const response = await fetch(`${BASE_URL}${path}`, config);
    let data = {};
    const contentType = response.headers.get('content-type');
    if (contentType && contentType.includes('application/json')) {
      data = await response.json();
    }

    if (!response.ok) {
      if (data.error) {
        throw data.error;
      }
      throw {
        code: 'HTTP_ERROR',
        message: data.message || `Request failed with status ${response.status}`,
      };
    }

    return data;
  } catch (error) {
    console.error(`API Error on ${path}:`, error);
    if (error.code && error.message) {
      throw error;
    }
    throw {
      code: 'NETWORK_ERROR',
      message: error.message || 'Ошибка сети или бэкенд недоступен',
    };
  }
}

export const api = {
  // Auth
  authTelegram: (initData) => request('/auth/telegram', {
    method: 'POST',
    body: JSON.stringify({ initData }),
  }),
  authRegister: (email, password, name) => request('/auth/register', {
    method: 'POST',
    body: JSON.stringify({ email, password, name }),
  }),
  authLogin: (email, password) => request('/auth/login', {
    method: 'POST',
    body: JSON.stringify({ email, password }),
  }),
  authMe: () => request('/auth/me', {
    method: 'GET',
  }),

  // Spaces
  getSpaces: () => request('/spaces', {
    method: 'GET',
  }),
  createSpace: (name, type) => request('/spaces', {
    method: 'POST',
    body: JSON.stringify({ name, type }),
  }),
  getSpace: (id) => request(`/spaces/${id}`, {
    method: 'GET',
  }),
  joinSpace: (id) => request(`/spaces/${id}/join`, {
    method: 'POST',
  }),
  getSpaceMembers: (id) => request(`/spaces/${id}/members`, {
    method: 'GET',
  }),

  // Finance
  getTransactions: (spaceId) => request(`/spaces/${spaceId}/transactions`, {
    method: 'GET',
  }),
  createTransaction: (spaceId, { title, amount, paid_by, split }) => request(`/spaces/${spaceId}/transactions`, {
    method: 'POST',
    body: JSON.stringify({ title, amount, paid_by, split }),
  }),
  getBalance: (spaceId) => request(`/spaces/${spaceId}/balance`, {
    method: 'GET',
  }),

  // Tasks
  getTasks: (spaceId) => request(`/spaces/${spaceId}/tasks`, {
    method: 'GET',
  }),
  createTask: (spaceId, { title, assignee_id, due_at }) => request(`/spaces/${spaceId}/tasks`, {
    method: 'POST',
    body: JSON.stringify({ title, assignee_id, due_at }),
  }),
  updateTask: (spaceId, taskId, { done, assignee_id, title }) => request(`/spaces/${spaceId}/tasks/${taskId}`, {
    method: 'PATCH',
    body: JSON.stringify({ done, assignee_id, title }),
  }),

  // Feed (posts)
  getPosts: (spaceId) => request(`/spaces/${spaceId}/posts`, {
    method: 'GET',
  }),
  createPost: (spaceId, { text }) => request(`/spaces/${spaceId}/posts`, {
    method: 'POST',
    body: JSON.stringify({ text }),
  }),

  // Calendar (events)
  getEvents: (spaceId) => request(`/spaces/${spaceId}/events`, {
    method: 'GET',
  }),
  createEvent: (spaceId, { title, start_at }) => request(`/spaces/${spaceId}/events`, {
    method: 'POST',
    body: JSON.stringify({ title, start_at }),
  }),
};