const express = require('express');
const router = express.Router();
const { getDB } = require('../database');
const { auth } = require('../middleware/auth');

/**
 * @swagger
 * components:
 *   schemas:
 *     Address:
 *       type: object
 *       properties:
 *         id:
 *           type: integer
 *           description: 地址ID
 *         user_id:
 *           type: integer
 *           description: 用户ID
 *         recipient_name:
 *           type: string
 *           description: 收件人姓名
 *         phone:
 *           type: string
 *           description: 联系电话
 *         province_code:
 *           type: string
 *           description: 省份编码
 *         province_name:
 *           type: string
 *           description: 省份名称
 *         city_code:
 *           type: string
 *           description: 城市编码
 *         city_name:
 *           type: string
 *           description: 城市名称
 *         district_code:
 *           type: string
 *           description: 区县编码
 *         district_name:
 *           type: string
 *           description: 区县名称
 *         detailed_address:
 *           type: string
 *           description: 详细地址
 *         postal_code:
 *           type: string
 *           description: 邮政编码
 *         label_id:
 *           type: integer
 *           description: 地址标签ID
 *         is_default:
 *           type: boolean
 *           description: 是否为默认地址
 *         label_name:
 *           type: string
 *           description: 标签名称
 *         label_color:
 *           type: string
 *           description: 标签颜色
 *       required:
 *         - recipient_name
 *         - phone
 *         - province_code
 *         - province_name
 *         - city_code
 *         - city_name
 *         - district_code
 *         - district_name
 *         - detailed_address
 */

/**
 * @swagger
 * /addresses:
 *   get:
 *     summary: 获取用户收货地址列表
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     responses:
 *       200:
 *         description: 成功获取地址列表
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 data:
 *                   type: array
 *                   items:
 *                     $ref: '#/components/schemas/Address'
 *       401:
 *         description: 未授权
 *       500:
 *         description: 服务器错误
 */
router.get('/', auth, async (req, res) => {
  try {
    const userId = req.user.id;
    
    const [addresses] = await getDB().execute(
      `SELECT ua.*, al.name as label_name, al.color as label_color
       FROM user_addresses ua
       LEFT JOIN address_labels al ON ua.label_id = al.id
       WHERE ua.user_id = ? AND ua.deleted_at IS NULL
       ORDER BY ua.is_default DESC, ua.created_at DESC`,
      [userId]
    );
    
    res.json({
      success: true,
      data: addresses
    });
  } catch (error) {
    console.error('获取收货地址列表错误:', error);
    res.status(500).json({ message: '获取收货地址列表失败' });
  }
});

/**
 * @swagger
 * /addresses/{id}:
 *   get:
 *     summary: 获取单个收货地址详情
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 地址ID
 *     responses:
 *       200:
 *         description: 成功获取地址详情
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 data:
 *                   $ref: '#/components/schemas/Address'
 *       401:
 *         description: 未授权
 *       404:
 *         description: 地址不存在
 *       500:
 *         description: 服务器错误
 */
router.get('/:id', auth, async (req, res) => {
  try {
    const addressId = req.params.id;
    const userId = req.user.id;
    
    const [addresses] = await getDB().execute(
      `SELECT ua.*, al.name as label_name, al.color as label_color
       FROM user_addresses ua
       LEFT JOIN address_labels al ON ua.label_id = al.id
       WHERE ua.id = ? AND ua.user_id = ? AND ua.deleted_at IS NULL`,
      [addressId, userId]
    );
    
    if (addresses.length === 0) {
      return res.status(404).json({ message: '收货地址不存在' });
    }
    
    res.json({
      success: true,
      data: addresses[0]
    });
  } catch (error) {
    console.error('获取收货地址详情错误:', error);
    res.status(500).json({ message: '获取收货地址详情失败' });
  }
});

/**
 * @swagger
 * /addresses:
 *   post:
 *     summary: 创建收货地址
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               recipient_name:
 *                 type: string
 *                 description: 收件人姓名
 *               phone:
 *                 type: string
 *                 description: 联系电话
 *               province_code:
 *                 type: string
 *                 description: 省份编码
 *               province_name:
 *                 type: string
 *                 description: 省份名称
 *               city_code:
 *                 type: string
 *                 description: 城市编码
 *               city_name:
 *                 type: string
 *                 description: 城市名称
 *               district_code:
 *                 type: string
 *                 description: 区县编码
 *               district_name:
 *                 type: string
 *                 description: 区县名称
 *               detailed_address:
 *                 type: string
 *                 description: 详细地址
 *               postal_code:
 *                 type: string
 *                 description: 邮政编码
 *               label_id:
 *                 type: integer
 *                 description: 地址标签ID
 *               is_default:
 *                 type: boolean
 *                 description: 是否为默认地址
 *             required:
 *               - recipient_name
 *               - phone
 *               - province_code
 *               - province_name
 *               - city_code
 *               - city_name
 *               - district_code
 *               - district_name
 *               - detailed_address
 *     responses:
 *       201:
 *         description: 地址创建成功
 *       400:
 *         description: 请求参数错误
 *       401:
 *         description: 未授权
 *       500:
 *         description: 服务器错误
 */
router.post('/', auth, async (req, res) => {
  try {
    const userId = req.user.id;
    const {
      recipient_name,
      phone,
      province_code,
      province_name,
      city_code,
      city_name,
      district_code,
      district_name,
      detailed_address,
      postal_code,
      label_id,
      is_default = false
    } = req.body;
    
    // 验证必填字段
    if (!recipient_name || !phone || !province_code || !city_code || !district_code || !detailed_address) {
      return res.status(400).json({ message: '收件人姓名、电话、省市区和详细地址不能为空' });
    }
    
    // 如果设置为默认地址，先取消其他默认地址
    if (is_default) {
      await getDB().execute(
        'UPDATE user_addresses SET is_default = false WHERE user_id = ? AND deleted_at IS NULL',
        [userId]
      );
    }
    
    const [result] = await getDB().execute(
      `INSERT INTO user_addresses (
        user_id, recipient_name, phone, province_code, province_name, city_code, city_name,
        district_code, district_name, detailed_address, postal_code, label_id, is_default, created_at, updated_at
      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, NOW(), NOW())`,
      [
        userId, recipient_name, phone, province_code, province_name, city_code, city_name,
        district_code, district_name, detailed_address, postal_code, label_id, is_default
      ]
    );
    
    res.status(201).json({
      success: true,
      message: '收货地址创建成功',
      data: { addressId: result.insertId }
    });
  } catch (error) {
    console.error('创建收货地址错误:', error);
    res.status(500).json({ message: '创建收货地址失败' });
  }
});

/**
 * @swagger
 * /addresses/{id}:
 *   put:
 *     summary: 更新收货地址
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 地址ID
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               recipient_name:
 *                 type: string
 *                 description: 收件人姓名
 *               phone:
 *                 type: string
 *                 description: 联系电话
 *               province_code:
 *                 type: string
 *                 description: 省份编码
 *               province_name:
 *                 type: string
 *                 description: 省份名称
 *               city_code:
 *                 type: string
 *                 description: 城市编码
 *               city_name:
 *                 type: string
 *                 description: 城市名称
 *               district_code:
 *                 type: string
 *                 description: 区县编码
 *               district_name:
 *                 type: string
 *                 description: 区县名称
 *               detailed_address:
 *                 type: string
 *                 description: 详细地址
 *               postal_code:
 *                 type: string
 *                 description: 邮政编码
 *               label_id:
 *                 type: integer
 *                 description: 地址标签ID
 *               is_default:
 *                 type: boolean
 *                 description: 是否为默认地址
 *     responses:
 *       200:
 *         description: 地址更新成功
 *       400:
 *         description: 请求参数错误
 *       401:
 *         description: 未授权
 *       404:
 *         description: 地址不存在
 *       500:
 *         description: 服务器错误
 */
router.put('/:id', auth, async (req, res) => {
  try {
    const addressId = req.params.id;
    const userId = req.user.id;
    const {
      recipient_name,
      phone,
      province_code,
      province_name,
      city_code,
      city_name,
      district_code,
      district_name,
      detailed_address,
      postal_code,
      label_id,
      is_default
    } = req.body;
    
    // 检查地址是否存在且属于当前用户
    const [existing] = await getDB().execute(
      'SELECT id FROM user_addresses WHERE id = ? AND user_id = ? AND deleted_at IS NULL',
      [addressId, userId]
    );
    
    if (existing.length === 0) {
      return res.status(404).json({ message: '收货地址不存在' });
    }
    
    // 如果设置为默认地址，先取消其他默认地址
    if (is_default) {
      await getDB().execute(
        'UPDATE user_addresses SET is_default = false WHERE user_id = ? AND id != ? AND deleted_at IS NULL',
        [userId, addressId]
      );
    }
    
    const [result] = await getDB().execute(
      `UPDATE user_addresses SET 
        recipient_name = ?, phone = ?, province_code = ?, province_name = ?, 
        city_code = ?, city_name = ?, district_code = ?, district_name = ?,
        detailed_address = ?, postal_code = ?, label_id = ?, is_default = ?, updated_at = NOW()
       WHERE id = ? AND user_id = ?`,
      [
        recipient_name, phone, province_code, province_name, city_code, city_name,
        district_code, district_name, detailed_address, postal_code, label_id, is_default,
        addressId, userId
      ]
    );
    
    res.json({
      success: true,
      message: '收货地址更新成功'
    });
  } catch (error) {
    console.error('更新收货地址错误:', error);
    res.status(500).json({ message: '更新收货地址失败' });
  }
});

/**
 * @swagger
 * /addresses/{id}:
 *   delete:
 *     summary: 删除收货地址（软删除）
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 地址ID
 *     responses:
 *       200:
 *         description: 地址删除成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: true
 *                 message:
 *                   type: string
 *                   example: 收货地址删除成功
 *       401:
 *         description: 未授权
 *       404:
 *         description: 地址不存在
 *       500:
 *         description: 服务器错误
 */
router.delete('/:id', auth, async (req, res) => {
  try {
    const addressId = req.params.id;
    const userId = req.user.id;
    
    const [result] = await getDB().execute(
      'UPDATE user_addresses SET deleted_at = NOW() WHERE id = ? AND user_id = ? AND deleted_at IS NULL',
      [addressId, userId]
    );
    
    if (result.affectedRows === 0) {
      return res.status(404).json({ message: '收货地址不存在' });
    }
    
    res.json({
      success: true,
      message: '收货地址删除成功'
    });
  } catch (error) {
    console.error('删除收货地址错误:', error);
    res.status(500).json({ message: '删除收货地址失败' });
  }
});

/**
 * @swagger
 * /addresses/{id}/default:
 *   put:
 *     summary: 设置默认地址
 *     tags: [Addresses]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 地址ID
 *     responses:
 *       200:
 *         description: 默认地址设置成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: true
 *                 message:
 *                   type: string
 *                   example: 默认地址设置成功
 *       401:
 *         description: 未授权
 *       404:
 *         description: 地址不存在
 *       500:
 *         description: 服务器错误
 */
router.put('/:id/default', auth, async (req, res) => {
  try {
    const addressId = req.params.id;
    const userId = req.user.id;
    
    // 检查地址是否存在且属于当前用户
    const [existing] = await getDB().execute(
      'SELECT id FROM user_addresses WHERE id = ? AND user_id = ? AND deleted_at IS NULL',
      [addressId, userId]
    );
    
    if (existing.length === 0) {
      return res.status(404).json({ message: '收货地址不存在' });
    }
    
    // 取消其他默认地址
    await getDB().execute(
      'UPDATE user_addresses SET is_default = false WHERE user_id = ? AND deleted_at IS NULL',
      [userId]
    );
    
    // 设置当前地址为默认
    await getDB().execute(
      'UPDATE user_addresses SET is_default = true WHERE id = ? AND user_id = ?',
      [addressId, userId]
    );
    
    res.json({
      success: true,
      message: '默认地址设置成功'
    });
  } catch (error) {
    console.error('设置默认地址错误:', error);
    res.status(500).json({ message: '设置默认地址失败' });
  }
});

module.exports = router;