const API_URL = import.meta.env.VITE_API_URL || 'http://localhost:3005/api';

const getHeaders = () => {
  const token = localStorage.getItem('auth_token');
  return {
    'Content-Type': 'application/json',
    ...(token ? { Authorization: `Bearer ${token}` } : {})
  };
};

export const api = {
  // Auth
  register: async (email, password) => {
    const res = await fetch(`${API_URL}/auth/register`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ email, password })
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data; // returns { status: 'pending' | 'active', token, profile }
  },
  
  login: async (email, password) => {
    const res = await fetch(`${API_URL}/auth/login`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ email, password })
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  getMe: async () => {
    const res = await fetch(`${API_URL}/auth/me`, { headers: getHeaders() });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  // Projects
  getProjects: async () => {
    const res = await fetch(`${API_URL}/projects`, { headers: getHeaders() });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  getProject: async (id) => {
    const res = await fetch(`${API_URL}/projects/${id}`, { headers: getHeaders() });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  saveProject: async (projectData) => {
    const res = await fetch(`${API_URL}/projects`, {
      method: 'POST',
      headers: getHeaders(),
      body: JSON.stringify(projectData)
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  // Admin
  getUsers: async () => {
    const res = await fetch(`${API_URL}/users`, { headers: getHeaders() });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  updateUser: async (id, updateData) => {
    const res = await fetch(`${API_URL}/users/${id}`, {
      method: 'PUT',
      headers: getHeaders(),
      body: JSON.stringify(updateData)
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  // Credits
  deductCredit: async () => {
    const res = await fetch(`${API_URL}/users/deduct-credit`, {
      method: 'POST',
      headers: getHeaders()
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data;
  },
  
  // Storage
  uploadAsset: async (fileBlob) => {
    const formData = new FormData();
    formData.append('file', fileBlob);
    
    const token = localStorage.getItem('auth_token');
    const headers = token ? { Authorization: `Bearer ${token}` } : {};
    
    const res = await fetch(`${API_URL}/upload`, {
      method: 'POST',
      headers,
      body: formData
    });
    const data = await res.json();
    if (!res.ok) throw new Error(data.error);
    return data.url;
  }
};