frontend/src/utils/api.js

// Tự động chọn base URL:
// - Production (Vercel): dùng VITE_API_URL trỏ về HF Space
// - Development (local): dùng '' để Vite proxy forward về localhost:5000
const BASE_URL = import.meta.env.VITE_API_URL || '';

export const api = {
  get: (path, token = null) =>
    fetch(`${BASE_URL}${path}`, {
      headers: token ? { Authorization: `Bearer ${token}` } : {}
    }).then(r => r.json()),

  post: (path, body, token = null) =>
    fetch(`${BASE_URL}${path}`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        ...(token ? { Authorization: `Bearer ${token}` } : {})
      },
      body: JSON.stringify(body)
    }).then(r => r.json()),

  put: (path, body, token) =>
    fetch(`${BASE_URL}${path}`, {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${token}`
      },
      body: JSON.stringify(body)
    }).then(r => r.json()),

  delete: (path, token) =>
    fetch(`${BASE_URL}${path}`, {
      method: 'DELETE',
      headers: { Authorization: `Bearer ${token}` }
    }).then(r => r.json()),
};