/**
 * 认证路由
 * @file auth.js
 * @description 认证相关的路由定义
 */
const express = require('express');
const { body } = require('express-validator');
const authController = require('../controllers/authController');
const { authMiddleware } = require('../middleware/auth');

const router = express.Router();

// 登录验证规则
const loginValidation = [
  body('username')
    .notEmpty()
    .withMessage('用户名不能为空')
    .isLength({ min: 3, max: 50 })
    .withMessage('用户名长度必须在3-50个字符之间'),
  body('password')
    .notEmpty()
    .withMessage('密码不能为空')
    .isLength({ min: 6 })
    .withMessage('密码长度不能少于6个字符')
];

// 修改密码验证规则
const changePasswordValidation = [
  body('oldPassword')
    .notEmpty()
    .withMessage('原密码不能为空'),
  body('newPassword')
    .notEmpty()
    .withMessage('新密码不能为空')
    .isLength({ min: 6 })
    .withMessage('新密码长度不能少于6个字符')
    .matches(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)/)
    .withMessage('新密码必须包含大小写字母和数字')
];

/**
 * @swagger
 * /api/auth/login:
 *   post:
 *     summary: 用户登录
 *     tags: [认证]
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             required:
 *               - username
 *               - password
 *             properties:
 *               username:
 *                 type: string
 *                 description: 用户名
 *               password:
 *                 type: string
 *                 description: 密码
 *     responses:
 *       200:
 *         description: 登录成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 message:
 *                   type: string
 *                 data:
 *                   type: object
 *                   properties:
 *                     token:
 *                       type: string
 *                     user:
 *                       type: object
 *       401:
 *         description: 登录失败
 */
router.post('/login', loginValidation, authController.login);

/**
 * @swagger
 * /api/auth/logout:
 *   post:
 *     summary: 用户登出
 *     tags: [认证]
 *     security:
 *       - bearerAuth: []
 *     responses:
 *       200:
 *         description: 登出成功
 */
router.post('/logout', authMiddleware, authController.logout);

/**
 * @swagger
 * /api/auth/refresh:
 *   post:
 *     summary: 刷新令牌
 *     tags: [认证]
 *     security:
 *       - bearerAuth: []
 *     responses:
 *       200:
 *         description: 令牌刷新成功
 *       401:
 *         description: 令牌无效
 */
router.post('/refresh', authMiddleware, authController.refreshToken);

/**
 * @swagger
 * /api/auth/me:
 *   get:
 *     summary: 获取当前用户信息
 *     tags: [认证]
 *     security:
 *       - bearerAuth: []
 *     responses:
 *       200:
 *         description: 获取成功
 *       401:
 *         description: 未授权
 */
router.get('/me', authMiddleware, authController.getCurrentUser);

/**
 * @swagger
 * /api/auth/change-password:
 *   post:
 *     summary: 修改密码
 *     tags: [认证]
 *     security:
 *       - bearerAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             required:
 *               - oldPassword
 *               - newPassword
 *             properties:
 *               oldPassword:
 *                 type: string
 *                 description: 原密码
 *               newPassword:
 *                 type: string
 *                 description: 新密码
 *     responses:
 *       200:
 *         description: 密码修改成功
 *       400:
 *         description: 请求参数错误
 */
router.post('/change-password', authMiddleware, changePasswordValidation, authController.changePassword);

module.exports = router;
