115 lines
3.4 KiB
TypeScript
115 lines
3.4 KiB
TypeScript
// File: lib/api/client.ts
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import axios, { AxiosInstance, InternalAxiosRequestConfig, AxiosError } from 'axios';
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import { v4 as uuidv4 } from 'uuid';
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// อ่านค่า Base URL จาก Environment Variable
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const baseURL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001/api';
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// Token cache for API calls outside React components
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let cachedToken: string | null = null;
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let tokenPromise: Promise<string | null> | null = null;
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// Async function to get token
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async function getAuthToken(): Promise<string | null> {
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if (cachedToken) return cachedToken;
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if (tokenPromise) return tokenPromise;
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tokenPromise = (async () => {
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try {
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if (typeof window !== 'undefined') {
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const { getSession } = await import('next-auth/react');
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const session = await getSession();
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cachedToken = session?.accessToken || null;
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return cachedToken;
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}
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} catch (_error) {
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// Fallback to localStorage
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try {
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const authStorage = localStorage.getItem('auth-storage');
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if (authStorage) {
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const parsed = JSON.parse(authStorage);
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cachedToken = parsed?.state?.token || null;
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return cachedToken;
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}
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} catch (__error) {
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// All methods failed
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}
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}
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return null;
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})();
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return tokenPromise;
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}
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// Function to clear token cache (call on logout)
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export function clearAuthTokenCache(): void {
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cachedToken = null;
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tokenPromise = null;
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}
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// สร้าง Axios Instance หลัก
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const apiClient: AxiosInstance = axios.create({
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baseURL,
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headers: {
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'Content-Type': 'application/json',
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},
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timeout: 15000, // Timeout 15 วินาที
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});
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// ---------------------------------------------------------------------------
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// Request Interceptors
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// ---------------------------------------------------------------------------
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apiClient.interceptors.request.use(
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async (config: InternalAxiosRequestConfig) => {
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// 1. Idempotency Key Injection
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// ป้องกันการทำรายการซ้ำสำหรับ Method ที่เปลี่ยนแปลงข้อมูล
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const method = config.method?.toLowerCase();
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if (method && ['post', 'put', 'delete', 'patch'].includes(method)) {
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config.headers['Idempotency-Key'] = uuidv4();
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}
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// 2. Authentication Token Injection
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// ดึง Token จาก NextAuth session ผ่าน getSession()
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if (typeof window !== 'undefined') {
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const token = await getAuthToken();
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if (token) {
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config.headers['Authorization'] = `Bearer ${token}`;
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}
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}
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return config;
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},
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(error) => {
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return Promise.reject(error);
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}
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);
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// ---------------------------------------------------------------------------
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// Response Interceptors
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// ---------------------------------------------------------------------------
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apiClient.interceptors.response.use(
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(response) => {
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return response;
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},
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(error: AxiosError) => {
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if (error.response) {
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const { status } = error.response;
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// กรณี Token หมดอายุ หรือ ไม่มีสิทธิ์
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if (status === 401) {
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// Clear cached token and redirect to login
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clearAuthTokenCache();
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if (typeof window !== 'undefined') {
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window.location.href = '/login';
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}
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}
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}
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return Promise.reject(error);
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}
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);
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export default apiClient;
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