const API_BASE = 'https://api.hasdo.info';

export async function apiFetch<T>(
  path: string,
  opts: { method?: string; body?: any; token?: string } = {}
): Promise<T> {
  const headers: Record<string, string> = { 'Content-Type': 'application/json' };
  if (opts.token) headers['Authorization'] = `Bearer ${opts.token}`;

  const res = await fetch(`${API_BASE}${path}`, {
    method: opts.method || 'GET',
    headers,
    body: opts.body ? JSON.stringify(opts.body) : undefined,
  });

  if (!res.ok) {
    const err = await res.json().catch(() => ({ message: `HTTP ${res.status}` }));
    throw new Error(err.message || `HTTP ${res.status}`);
  }

  return res.json();
}

// Auth
export const login = (data: { email: string; password: string }) =>
  apiFetch<{ data: { token: string; user: any } }>('/api/v1/auth/login', {
    method: 'POST',
    body: data,
  });

export const register = (data: { email: string; name: string; password: string }) =>
  apiFetch<{ data: { token: string; user: any } }>('/api/v1/auth/register', {
    method: 'POST',
    body: data,
  });

// Tasks
export const getTasks = (token: string) =>
  apiFetch<{ data: any[] }>('/api/v1/tasks', { token });

export const createTask = (token: string, data: any) =>
  apiFetch<{ data: any }>('/api/v1/tasks', { method: 'POST', body: data, token });

export const updateTask = (token: string, id: string, data: any) =>
  apiFetch<{ data: any }>(`/api/v1/tasks/${id}`, { method: 'PUT', body: data, token });

export const deleteTask = (token: string, id: string) =>
  apiFetch<void>(`/api/v1/tasks/${id}`, { method: 'DELETE', token });

// Groups
export const getGroups = (token: string) =>
  apiFetch<{ data: any[] }>('/api/v1/groups', { token });

// Goals
export const getGoals = (token: string) =>
  apiFetch<{ data: any[] }>('/api/v1/goals', { token });

// Chat
export const sendChatMessage = (token: string, message: string) =>
  apiFetch<{ data: { reply: string } }>('/api/v1/chat', {
    method: 'POST',
    body: { message },
    token,
  });