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

const router = express.Router();

// 订单管理路由


// 获取订单列表
router.get('/', auth, async (req, res) => {
  try {
    const { page = 1, limit = 10, search = '', orderNumber = '', username = '', status = '', startDate = '', endDate = '' } = req.query;



    // 确保参数为有效数字
    const pageNum = parseInt(page) || 1;
    const limitNum = parseInt(limit) || 10;
    const offset = (pageNum - 1) * limitNum;
    const isAdmin = req.user.role === 'admin';

    let whereClause = 'WHERE 1=1';
    const params = [];

    // 非管理员只能查看自己的订单
    if (!isAdmin) {
      whereClause += ' AND o.user_id = ?';
      params.push(req.user.id);
    }

    if (search) {
      whereClause += ' AND (o.order_no LIKE ? OR u.username LIKE ?)';
      params.push(`%${search}%`, `%${search}%`);
    }

    if (orderNumber) {
      whereClause += ' AND o.order_no LIKE ?';
      params.push(`%${orderNumber}%`);
    }

    if (username) {
      whereClause += ' AND u.username LIKE ?';
      params.push(`%${username}%`);
    }

    if (status && status.trim()) {
      whereClause += ' AND o.status = ?';
      params.push(status);
    }

    if (startDate && startDate.trim()) {
      whereClause += ' AND DATE(o.created_at) >= ?';
      params.push(startDate);
    }

    if (endDate && endDate.trim()) {
      whereClause += ' AND DATE(o.created_at) <= ?';
      params.push(endDate);
    }

    // 获取总数
    const countQuery = `
      SELECT COUNT(*) as total 
      FROM orders as o 
      LEFT JOIN users u ON o.user_id = u.id 
      ${whereClause}
    `;
    console.log(countQuery, params);

    const [countResult] = await getDB().execute(countQuery, params);
    const total = countResult[0].total;
    console.log(total, '数量');

    // 获取订单列表
    const query = `
      SELECT 
        o.id, o.order_no, o.user_id, o.total_amount, o.total_points, 
        o.status, o.address, o.created_at, o.updated_at,o.total_rongdou,
        u.username
      FROM orders o
      LEFT JOIN users u ON o.user_id = u.id
      ${whereClause}
      ORDER BY o.created_at DESC
      LIMIT ${limitNum} OFFSET ${offset}
    `;

    const [orders] = await getDB().execute(query, [...params]);

    // 为每个订单获取商品详情
    for (const order of orders) {
      const [orderItems] = await getDB().execute(
        `SELECT 
          oi.id, oi.product_id, oi.quantity, oi.price, oi.points_price, oi.rongdou_price,
          oi.spec_combination_id,
          p.name as product_name, p.image_url, p.description,
          psc.spec_values as spec_info
        FROM order_items oi
        LEFT JOIN products p ON oi.product_id = p.id
        LEFT JOIN product_spec_combinations psc ON oi.spec_combination_id = psc.id
        WHERE oi.order_id = ?`,
        [order.id]
      );

      // 处理规格信息
      for (const item of orderItems) {
        if (item.spec_info) {
          try {
            item.spec_info = JSON.parse(item.spec_info);
          } catch (e) {
            item.spec_info = null;
          }
        }
      }

      // 处理地址信息
      console.log(order.address,'order.address');
      
      if (order.address) {
        try {
          order.address = order.address;
        } catch (e) {
          order.address = null;
        }
      }

      order.items = orderItems;
    }

    res.json({
      success: true,
      data: {
        orders,
        pagination: {
          page: pageNum,
          limit: limitNum,
          total,
          pages: Math.ceil(total / limitNum)
        }
      }
    });

    
    router.post('/confirm', auth, async (req, res) => {
      const connection = await getDB().getConnection();

      try {
        await connection.beginTransaction();

        const { pre_order_id, address } = req.body;
        const userId = req.user.id;

        // 验证必填字段
        if (!pre_order_id || !address) {
          return res.status(400).json({ success: false, message: '预订单ID和收货地址为必填项' });
        }

        const { recipient_name, phone, province, city, district, detail_address } = address;
        if (!recipient_name || !phone || !province || !city || !district || !detail_address) {
          return res.status(400).json({ success: false, message: '收货地址信息不完整' });
        }

        // 获取预订单信息
        const [preOrders] = await connection.execute(
          `SELECT id, order_no, user_id, total_amount, total_points, total_rongdou, status 
       FROM orders WHERE id = ? AND user_id = ? AND status = 'pre_order'`,
          [pre_order_id, userId]
        );

        if (preOrders.length === 0) {
          await connection.rollback();
          return res.status(404).json({ success: false, message: '预订单不存在或已处理' });
        }

        const preOrder = preOrders[0];

        // 获取用户当前积分和融豆
        const [users] = await connection.execute(
          'SELECT points, rongdou FROM users WHERE id = ?',
          [userId]
        );

        if (users.length === 0) {
          await connection.rollback();
          return res.status(404).json({ success: false, message: '用户不存在' });
        }

        const user = users[0];

        // 检查积分和融豆是否足够
        if (preOrder.total_points > 0 && user.points < preOrder.total_points) {
          await connection.rollback();
          return res.status(400).json({ success: false, message: '积分不足' });
        }

        if (preOrder.total_rongdou > 0 && user.rongdou < preOrder.total_rongdou) {
          await connection.rollback();
          return res.status(400).json({ success: false, message: '融豆不足' });
        }

        // 扣除积分
        if (preOrder.total_points > 0) {
          await connection.execute(
            'UPDATE users SET points = points - ? WHERE id = ?',
            [preOrder.total_points, userId]
          );

          // 记录积分变动历史
          await connection.execute(
            `INSERT INTO points_history (user_id, type, amount, description, order_id) 
         VALUES (?, 'spend', ?, ?, ?)`,
            [userId, preOrder.total_points, `订单消费 - ${preOrder.order_no}`, pre_order_id]
          );
        }

        // 扣除融豆
        if (preOrder.total_rongdou > 0) {
          await connection.execute(
            'UPDATE users SET rongdou = rongdou - ? WHERE id = ?',
            [preOrder.total_rongdou, userId]
          );

          // 记录融豆变动历史
          await connection.execute(
            `INSERT INTO rongdou_history (user_id, type, amount, description, order_id) 
         VALUES (?, 'spend', ?, ?, ?)`,
            [userId, preOrder.total_rongdou, `订单消费 - ${preOrder.order_no}`, pre_order_id]
          );
        }

        // 更新订单状态和收货地址
        const addressStr = JSON.stringify({
          recipient_name,
          phone,
          province,
          city,
          district,
          detail_address
        });

        await connection.execute(
          `UPDATE orders SET status = 'pending', address = ?, updated_at = NOW() 
       WHERE id = ?`,
          [addressStr, pre_order_id]
        );

        await connection.commit();

        res.json({
          success: true,
          message: '订单确认成功',
          data: {
            order_id: pre_order_id,
            order_no: preOrder.order_no
          }
        });

      } catch (error) {
        await connection.rollback();
        console.error('确认下单失败:', error);
        res.status(500).json({ success: false, message: '确认下单失败' });
      } finally {
        connection.release();
      }
    });

    
    router.get('/pre-order/:id', auth, async (req, res) => {
      try {
        const preOrderId = req.params.id;
        const userId = req.user.id;

        // 获取预订单基本信息
        const [orders] = await getDB().execute(
          `SELECT id, order_no, user_id, total_amount, total_points, total_rongdou, 
       status, created_at FROM orders WHERE id = ? AND user_id = ? AND status = 'pre_order'`,
          [preOrderId, userId]
        );

        if (orders.length === 0) {
          return res.status(404).json({ success: false, message: '预订单不存在' });
        }

        const order = orders[0];

        // 获取预订单商品详情
        const [orderItems] = await getDB().execute(
          `SELECT 
        oi.id, oi.product_id, oi.quantity, oi.price, oi.points_price, oi.rongdou_price,
        oi.spec_combination_id,
        p.name as product_name, p.image_url, p.description,
        psc.spec_values as spec_info
      FROM order_items oi
      LEFT JOIN products p ON oi.product_id = p.id
      LEFT JOIN product_spec_combinations psc ON oi.spec_combination_id = psc.id
      WHERE oi.order_id = ?`,
          [preOrderId]
        );

        // 处理规格信息
        for (const item of orderItems) {
          if (item.spec_info) {
            try {
              item.spec_info = JSON.parse(item.spec_info);
            } catch (e) {
              item.spec_info = null;
            }
          }
        }

        res.json({
          success: true,
          data: {
            ...order,
            items: orderItems
          }
        });
      } catch (error) {
        console.error('获取预订单详情失败:', error);
        res.status(500).json({ success: false, message: '获取预订单详情失败' });
      }
    });
  } catch (error) {
    console.error('获取订单列表失败:', error);
    res.status(500).json({ success: false, message: '获取订单列表失败' });
  }
});


router.get('/:id', auth, async (req, res) => {
  try {
    const { id } = req.params;
    const isAdmin = req.user.role === 'admin';

    let whereClause = 'WHERE o.id = ?';
    const params = [id];

    // 非管理员只能查看自己的订单
    if (!isAdmin) {
      whereClause += ' AND o.user_id = ?';
      params.push(req.user.id);
    }

    const query = `
      SELECT 
        o.id, o.order_no, o.user_id, o.total_amount, o.total_points, 
        o.status, o.address, o.created_at, o.updated_at,
        u.username, u.phone
      FROM orders o
      LEFT JOIN users u ON o.user_id = u.id
      ${whereClause}
    `;

    const [orders] = await getDB().execute(query, params);

    if (orders.length === 0) {
      return res.status(404).json({ success: false, message: '订单不存在' });
    }

    const order = orders[0];

    // 获取订单商品详情
    const [orderItems] = await getDB().execute(
      `SELECT 
        oi.id, oi.product_id, oi.quantity, oi.price, oi.points_price, oi.rongdou_price,
        oi.spec_combination_id,
        p.name as product_name, p.image_url, p.description,
        psc.spec_values as spec_info
      FROM order_items oi
      LEFT JOIN products p ON oi.product_id = p.id
      LEFT JOIN product_spec_combinations psc ON oi.spec_combination_id = psc.id
      WHERE oi.order_id = ?`,
      [order.id]
    );

    // 处理规格信息
    for (const item of orderItems) {
      if (item.spec_info) {
        try {
          item.spec_info = JSON.parse(item.spec_info);
        } catch (e) {
          item.spec_info = null;
        }
      }
    }

    // 处理地址信息
    // console.log(order.address,'order.address');
    
    if (order.address) {
      try {
        order.address = order.address;
      } catch (e) {
        order.address = null;
      }
    }

    order.items = orderItems;

    res.json({
      success: true,
      data: { order }
    });
  } catch (error) {
    console.error('获取订单详情失败:', error);
    res.status(500).json({ success: false, message: '获取订单详情失败' });
  }
});

// 创建预订单
router.post('/create-from-cart', auth, async (req, res) => {
  const db = getDB();
  await db.query('START TRANSACTION');

  try {
    const { cart_item_ids } = req.body;
    const user_id = req.user.id;

    // 验证必填字段
    if (!cart_item_ids || !Array.isArray(cart_item_ids) || cart_item_ids.length === 0) {
      await db.query('ROLLBACK');
      return res.status(400).json({ success: false, message: '请选择要购买的商品' });
    }

    // 获取购物车商品信息和支付方式
    const placeholders = cart_item_ids.map(() => '?').join(',');
    const cartQuery = `
      SELECT 
        c.id, c.product_id, c.quantity, c.specification_id,
        p.name, p.price, p.points_price, p.rongdou_price, p.stock, p.status, p.payment_methods,
        psc.price_adjustment, psc.points_adjustment, psc.rongdou_adjustment, psc.stock as spec_stock
      FROM cart_items c
      LEFT JOIN products p ON c.product_id = p.id
      LEFT JOIN product_spec_combinations psc ON c.specification_id = psc.id
      WHERE c.id IN (${placeholders}) AND c.user_id = ?
    `;

    const [cartItems] = await db.execute(cartQuery, [...cart_item_ids, user_id]);

    if (cartItems.length === 0) {
      await db.query('ROLLBACK');
      return res.status(400).json({ success: false, message: '购物车商品不存在' });
    }

    for (const item of cartItems) {

      const [stock] = await getDB().execute(
        `SELECT stock FROM product_spec_combinations WHERE id = ?`,
        [item.specification_id]
      );

      if (stock[0].stock < item.quantity) {
        await db.query('ROLLBACK');
        return res.status(400).json({ success: false, message: `商品 ${item.name} 库存不足` });
      }
      await db.execute(
        `UPDATE product_spec_combinations SET stock = stock - ? WHERE id = ?`,
        [item.quantity, item.specification_id]
      );
    }

    // 验证商品状态和库存，计算总价和支付方式
    let totalAmount = 0;
    let totalPoints = 0;
    let totalRongdou = 0;
    let allPaymentMethods = [];

    for (const item of cartItems) {
      if (item.status !== 'active') {
        await db.query('ROLLBACK');
        return res.status(400).json({ success: false, message: `商品 ${item.name} 已下架` });
      }

      const availableStock = item.specification_id ? item.spec_stock : item.stock;
      if (availableStock < item.quantity) {
        await db.query('ROLLBACK');
        return res.status(400).json({ success: false, message: `商品 ${item.name} 库存不足` });
      }

      // 解析商品支付方式
      let productPaymentMethods = ['rongdou']; // 默认支付方式
      if (item.payment_methods) {
        try {
          productPaymentMethods = JSON.parse(item.payment_methods);
        } catch (e) {
          console.error('解析商品支付方式失败:', e);
        }
      }
      console.log(productPaymentMethods,'productPaymentMethods');
      
      allPaymentMethods = allPaymentMethods.concat(productPaymentMethods);

      const finalPrice = item.price + (item.price_adjustment || 0);
      const finalRongdouPrice = item.rongdou_price + (item.rongdou_adjustment || 0);

      totalAmount += finalPrice * item.quantity;
      
      // 根据支付方式计算积分和融豆需求
      const hasPoints = productPaymentMethods.includes('points') || productPaymentMethods.includes('points_rongdou');
      const hasRongdou = productPaymentMethods.includes('rongdou') || productPaymentMethods.includes('points_rongdou');
      
      if (hasPoints && !hasRongdou) {
        // 仅积分支付：按10000积分=1融豆计算
        totalPoints += finalRongdouPrice * item.quantity * 10000;
        totalRongdou += finalRongdouPrice * item.quantity;
      } else if (!hasPoints && hasRongdou) {
        // 仅融豆支付
        totalRongdou += finalRongdouPrice * item.quantity;
      } else {
        // 组合支付或默认：记录融豆价格，前端可选择支付方式
        totalRongdou += finalRongdouPrice * item.quantity;
      }
    }
    
    // 去重支付方式
     const uniquePaymentMethods = [...new Set(allPaymentMethods)];
     console.log('订单支付方式:', uniquePaymentMethods);

    // 生成预订单号
    const orderNumber = 'PRE' + Date.now() + Math.random().toString(36).substr(2, 5).toUpperCase();

    // 创建预订单（状态为pre_order）
    const [orderResult] = await db.execute(
      `INSERT INTO orders (order_no, user_id, total_amount, total_points, total_rongdou, 
       status, created_at, updated_at) 
       VALUES (?, ?, ?, ?, ?, 'pre_order', NOW(), NOW())`,
      [orderNumber, user_id, totalAmount, totalPoints, totalRongdou]
    );

    const preOrderId = orderResult.insertId;

    // 创建预订单项
    for (const item of cartItems) {
      const finalPrice = item.price + (item.price_adjustment || 0);
      const finalPointsPrice = item.points_price + (item.points_adjustment || 0);
      const finalRongdouPrice = item.rongdou_price + (item.rongdou_adjustment || 0);

      await db.execute(
        `INSERT INTO order_items (order_id, product_id, spec_combination_id, quantity, 
         price, points, points_price, rongdou, rongdou_price, created_at) 
         VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, NOW())`,
        [preOrderId, item.product_id, item.specification_id, item.quantity,
          finalPrice, finalPointsPrice * item.quantity, finalPointsPrice, finalRongdouPrice * item.quantity, finalRongdouPrice]
      );
    }

    // 删除购物车中的商品
    await db.execute(
      `DELETE FROM cart_items WHERE id IN (${placeholders})`,
      cart_item_ids
    );

    await db.query('COMMIT');

    res.status(201).json({
      success: true,
      message: '预订单创建成功',
      data: {
        preOrderId,
        orderNumber,
        totalAmount,
        totalPoints,
        totalRongdou,
        paymentMethods: uniquePaymentMethods
       }
     });
  } catch (error) {
    await db.query('ROLLBACK');
    console.error('创建预订单失败:', error);
    res.status(500).json({ success: false, message: '创建预订单失败' });
  }
});

/**
 * @swagger
 * /api/orders/{id}/cancel:
 *   put:
 *     summary: 用户取消订单
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 订单ID
 *     responses:
 *       200:
 *         description: 订单取消成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 message:
 *                   type: string
 *       400:
 *         description: 只能取消待处理的订单
 *       401:
 *         description: 未授权
 *       404:
 *         description: 订单不存在
 *       500:
 *         description: 服务器错误
 */
router.put('/:id/cancel', auth, async (req, res) => {
  const db = getDB();
  await db.query('START TRANSACTION');

  try {

    const orderId = req.params.id;
    const userId = req.user.id;

    // 检查订单是否存在且属于当前用户
    const [orders] = await db.execute(
      'SELECT id, user_id, total_points, status FROM orders WHERE id = ? AND user_id = ?',
      [orderId, userId]
    );

    if (orders.length === 0) {
      await db.query('ROLLBACK');
      return res.status(404).json({ success: false, message: '订单不存在' });
    }

    const order = orders[0];

    if (order.status !== 'pending' && order.status !== 'pre_order') {
      await db.query('ROLLBACK');
      return res.status(400).json({ success: false, message: '只能取消待处理或待支付的订单' });
    }

    // 退还用户积分
    await db.execute(
      'UPDATE users SET points = points + ? WHERE id = ?',
      [order.total_points, userId]
    );

    // 记录积分历史
    await db.execute(
      `INSERT INTO points_history (user_id, amount, type, description, created_at)
       VALUES (?, ?, 'refund', '订单取消退还积分', NOW())`,
      [userId, order.total_points]
    );

    console.log(12345,order.id);
    const [orderDetails] = await db.execute(
      'SELECT * FROM order_items WHERE order_id = ?',
      [order.id]
    );
    console.log(12345,orderDetails);
    // 返还库存
    await db.execute(
      'UPDATE product_spec_combinations SET stock = stock + ? WHERE id = ?',
      [orderDetails[0].quantity, orderDetails[0].spec_combination_id]
    );
    

    // 更新订单状态
    await db.execute(
      'UPDATE orders SET status = "cancelled", updated_at = NOW() WHERE id = ?',
      [orderId]
    );

    await db.query('COMMIT');

    res.json({ success: true, message: '订单已取消' });
  } catch (error) {
    await db.query('ROLLBACK');
    console.error('取消订单失败:', error);
    res.status(500).json({ success: false, message: '取消订单失败' });
  }
});

/**
 * @swagger
 * /api/orders/{id}/confirm:
 *   put:
 *     summary: 确认收货
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 订单ID
 *     responses:
 *       200:
 *         description: 确认收货成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 message:
 *                   type: string
 *       400:
 *         description: 只能确认已发货的订单
 *       401:
 *         description: 未授权
 *       404:
 *         description: 订单不存在
 *       500:
 *         description: 服务器错误
 */
router.put('/:id/confirm', auth, async (req, res) => {
  try {
    const orderId = req.params.id;
    const userId = req.user.id;

    // 检查订单是否存在且属于当前用户
    const [orders] = await getDB().execute(
      'SELECT id, status FROM orders WHERE id = ? AND user_id = ?',
      [orderId, userId]
    );

    if (orders.length === 0) {
      return res.status(404).json({ success: false, message: '订单不存在' });
    }

    const order = orders[0];

    if (order.status !== 'shipped') {
      return res.status(400).json({ success: false, message: '只能确认已发货的订单' });
    }

    // 更新订单状态
    await getDB().execute(
      'UPDATE orders SET status = "completed", updated_at = NOW() WHERE id = ?',
      [orderId]
    );

    res.json({ success: true, message: '确认收货成功' });
  } catch (error) {
    console.error('确认收货失败:', error);
    res.status(500).json({ success: false, message: '确认收货失败' });
  }
});

/**
 * @swagger
 * /api/orders/{id}/status:
 *   put:
 *     summary: 更新订单状态（管理员）
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 订单ID
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               status:
 *                 type: string
 *                 enum: [pending, shipped, completed, cancelled]
 *                 description: 订单状态
 *             required:
 *               - status
 *     responses:
 *       200:
 *         description: 订单状态更新成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 message:
 *                   type: string
 *       400:
 *         description: 无效的订单状态
 *       401:
 *         description: 未授权
 *       403:
 *         description: 无管理员权限
 *       404:
 *         description: 订单不存在
 *       500:
 *         description: 服务器错误
 */
router.put('/:id/status', auth, adminAuth, async (req, res) => {
  const db = getDB();
  await db.query('START TRANSACTION');

  try {

    const orderId = req.params.id;
    const { status } = req.body;

    const validStatuses = ['pending', 'shipped', 'completed', 'cancelled'];
    if (!validStatuses.includes(status)) {
      await db.query('ROLLBACK');
      return res.status(400).json({ success: false, message: '无效的订单状态' });
    }

    // 检查订单是否存在
    const [orders] = await db.execute(
      'SELECT id, user_id, total_points, total_rongdou, status FROM orders WHERE id = ?',
      [orderId]
    );

    if (orders.length === 0) {
      await db.query('ROLLBACK');
      return res.status(404).json({ success: false, message: '订单不存在' });
    }

    const order = orders[0];

    // 如果是取消订单，需要退还积分和融豆
    if (status === 'cancelled' && order.status !== 'cancelled' && order.status !== 'pre_order') {
      // 退还用户积分
      if (order.total_points > 0) {
        await db.execute(
          'UPDATE users SET points = points + ? WHERE id = ?',
          [order.total_points, order.user_id]
        );

        // 记录积分历史
        await db.execute(
          `INSERT INTO points_history (user_id, amount, type, description, created_at)
            VALUES (?, ?, 'earn', '订单取消退还积分', NOW())`,
          [order.user_id, order.total_points]
        );
      }

      // 退还用户融豆
      if (order.total_rongdou > 0) {
        await db.execute(
          'UPDATE users SET balance = balance - ? WHERE id = ?',
          [order.total_rongdou, order.user_id]
        );

        // 记录融豆历史
        await db.execute(
          `INSERT INTO rongdou_history (user_id, amount, type, description, created_at)
            VALUES (?, ?, 'earn', '订单取消退还融豆', NOW())`,
          [order.user_id, order.total_rongdou]
        );
      }
    }

    // 更新订单状态
    await db.execute(
      'UPDATE orders SET status = ?, updated_at = NOW() WHERE id = ?',
      [status, orderId]
    );

    await db.query('COMMIT');

    res.json({ success: true, message: '订单状态已更新' });
  } catch (error) {
    await db.query('ROLLBACK');
    console.error('更新订单状态失败:', error);
    res.status(500).json({ success: false, message: '更新订单状态失败' });
  }
});

/**
 * @swagger
 * /api/orders/pending-payment/{id}:
 *   get:
 *     summary: 获取待支付预订单详情
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     parameters:
 *       - in: path
 *         name: id
 *         required: true
 *         schema:
 *           type: integer
 *         description: 预订单ID
 *     responses:
 *       200:
 *         description: 获取预订单详情成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 data:
 *                   type: object
 *                   properties:
 *                     id:
 *                       type: integer
 *                     order_no:
 *                       type: string
 *                     total_amount:
 *                       type: integer
 *                     total_points:
 *                       type: integer
 *                     total_rongdou:
 *                       type: integer
 *                     status:
 *                       type: string
 *                     created_at:
 *                       type: string
 *                     items:
 *                       type: array
 *                       items:
 *                         type: object
 *                         properties:
 *                           id:
 *                             type: integer
 *                           product_id:
 *                             type: integer
 *                           product_name:
 *                             type: string
 *                           quantity:
 *                             type: integer
 *                           price:
 *                             type: integer
 *                           points_price:
 *                             type: integer
 *                           rongdou_price:
 *                             type: integer
 *                           spec_info:
 *                             type: object
 *       401:
 *         description: 未授权
 *       404:
 *         description: 预订单不存在
 *       500:
 *         description: 服务器错误
 */
router.get('/pending-payment/:id', auth, async (req, res) => {
  try {
    const preOrderId = req.params.id;
    const userId = req.user.id;

    // 获取预订单基本信息
    const [orders] = await getDB().execute(
      `SELECT id, order_no, user_id, total_amount, total_points, total_rongdou, 
       status, created_at FROM orders WHERE id = ? AND user_id = ? AND status = 'pre_order'`,
      [preOrderId, userId]
    );

    if (orders.length === 0) {
      return res.status(404).json({ success: false, message: '预订单不存在' });
    }

    const order = orders[0];

    // 获取预订单商品详情
    const [orderItems] = await getDB().execute(
      `SELECT 
        oi.id, oi.product_id, oi.quantity, oi.price, oi.points_price, oi.rongdou_price,
        oi.spec_combination_id,
        p.name as product_name, p.image_url, p.description, p.payment_methods,
        psc.spec_values as spec_info
      FROM order_items oi
      LEFT JOIN products p ON oi.product_id = p.id
      LEFT JOIN product_spec_combinations psc ON oi.spec_combination_id = psc.id
      WHERE oi.order_id = ?`,
      [preOrderId]
    );

    // 处理规格信息
    for (const item of orderItems) {
      if (item.spec_info) {
        try {
          item.spec_info = JSON.parse(item.spec_info);
        } catch (e) {
          item.spec_info = null;
        }
      }
    }

    res.json({
      success: true,
      data: {
        ...order,
        items: orderItems.map(item => ({
          ...item,
          payment_methods: JSON.parse(item.payment_methods)
        }))
      }
    });
  } catch (error) {
    console.error('获取预订单详情失败:', error);
    res.status(500).json({ success: false, message: '获取预订单详情失败' });
  }
});

/**
 * @swagger
 * /api/orders/confirm-payment:
 *   post:
 *     summary: 确认支付订单
 *     description: |
 *       根据商品支付方式确认订单支付：
 *       - 仅积分支付：按10000积分=1融豆的比例扣除积分
 *       - 仅融豆支付：直接扣除融豆
 *       - 组合支付：优先扣除积分（按10000:1转换），不足部分扣除融豆
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             required:
 *               - order_id
 *               - address_id
 *             properties:
 *               order_id:
 *                 type: integer
 *                 description: 订单ID
 *                 example: 123
 *               address_id:
 *                 type: integer
 *                 description: 收货地址ID
 *                 example: 456
 *     responses:
 *       200:
 *         description: 确认支付成功
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: true
 *                 message:
 *                   type: string
 *                   example: "订单支付成功"
 *                 data:
 *                   type: object
 *                   properties:
 *                     order_id:
 *                       type: integer
 *                       example: 123
 *                     order_no:
 *                       type: string
 *                       example: "ORD20240101123456"
 *       400:
 *         description: 请求参数错误或余额不足
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: false
 *                 message:
 *                   type: string
 *                   enum: ["订单ID和收货地址ID为必填项", "积分不足", "融豆不足", "积分和融豆余额不足", "商品支付方式配置错误"]
 *       401:
 *         description: 未授权
 *       404:
 *         description: 订单或地址不存在
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                   example: false
 *                 message:
 *                   type: string
 *                   enum: ["订单不存在或已处理", "收货地址不存在", "用户不存在"]
 *       500:
 *         description: 服务器错误
 */
router.post('/confirm-payment', auth, async (req, res) => {
  const connection = await getDB().getConnection();

  try {
    await connection.beginTransaction();

    const { orderId: order_id, addressId: address_id, couponRecordId, paymentMethod } = req.body;
    const userId = req.user.id;

    // 验证必填字段
    if (!order_id || !address_id) {
      return res.status(400).json({ success: false, message: '订单ID和收货地址ID为必填项' });
    }

    // 获取订单信息和商品支付方式
    const [orders] = await connection.execute(
      `SELECT o.id, o.order_no, o.user_id, o.total_amount, o.total_points, o.total_rongdou, o.status,
              GROUP_CONCAT(DISTINCT p.payment_methods) as payment_methods_list
       FROM orders o
       JOIN order_items oi ON o.id = oi.order_id
       JOIN products p ON oi.product_id = p.id
       WHERE o.id = ? AND o.user_id = ? AND o.status = 'pre_order'
       GROUP BY o.id`,
      [order_id, userId]
    );

    if (orders.length === 0) {
      await connection.rollback();
      return res.status(404).json({ success: false, message: '订单不存在或已处理' });
    }

    const order = orders[0];
    
    // 解析支付方式
    // let allPaymentMethods = [];
    // // console.log(typeof order.payment_methods_list);
    
    // if (order.payment_methods_list) {
    //   try {
    //     // 数据库中存储的是序列化的JSON字符串，直接解析
       
    //     allPaymentMethods = JSON.parse(JSON.parse(order.payment_methods_list));
    //   } catch (e) {
    //     console.error('解析支付方式失败:', e, 'raw data:', order.payment_methods_list);
    //     allPaymentMethods = [];
    //   }
    // }
    
    // // 去重支付方式
    // allPaymentMethods = [...new Set(allPaymentMethods)];
    
    // // 判断支付方式类型
    // const hasPoints = allPaymentMethods.includes('points') || allPaymentMethods.includes('points_rongdou');
    // const hasRongdou = allPaymentMethods.includes('rongdou') || allPaymentMethods.includes('points_rongdou');
    // const isComboPayment = allPaymentMethods.includes('points_rongdou');
    
    // console.log('订单支付方式:', allPaymentMethods, { hasPoints, hasRongdou, isComboPayment });

    // 获取收货地址信息
    const [addresses] = await connection.execute(
      'SELECT id, receiver_name, receiver_phone, province, city, district, detailed_address as detail_address FROM user_addresses WHERE id = ? AND user_id = ?',
      [address_id, userId]
    );

    if (addresses.length === 0) {
      await connection.rollback();
      return res.status(404).json({ success: false, message: '收货地址不存在' });
    }

    const address = addresses[0];

    // 获取用户当前积分和融豆
    const [users] = await connection.execute(
      'SELECT points, balance FROM users WHERE id = ?',
      [userId]
    );

    if (users.length === 0) {
      await connection.rollback();
      return res.status(404).json({ success: false, message: '用户不存在' });
    }

    const user = users[0];
    if (user.balance > 0) {
      return res.status(400).json({ success: false, message: '融豆不足' });
    }
    user.balance = Math.abs(user.balance);

    // 开始扣钱
    switch (paymentMethod) {
      case 'points':
        // 积分支付逻辑
        if (user.points < order.total_points) {
          await connection.rollback();
          return res.status(400).json({ success: false, message: '积分不足' });
        }
        await connection.execute(
          'UPDATE users SET points = points - ? WHERE id = ?',
          [order.total_points, userId]
        );

        // 记录积分变动历史
        await connection.execute(
          `INSERT INTO points_history (user_id, type, amount, description, order_id) 
          VALUES (?, 'spend', ?, ?, ?)`,
          [userId, order.total_points, `订单支付 - ${order.order_no}`, order_id]
        );

        // 供应商分佣
        // await connection.execute(
        //   'UPDATE users SET points = points + ? WHERE id = ?',
        //   [order.total_points * 0.1, order.shop_id]
        // );
        // console.log(123,order)

        break;
      case 'beans':
        // 融豆支付逻辑
        if (user.balance < order.total_rongdou) {
          await connection.rollback();
          return res.status(400).json({ success: false, message: '融豆不足' });
        }
        await connection.execute(
          'UPDATE users SET balance = balance + ? WHERE id = ?',
          [order.total_rongdou, userId]
        );

        // 记录融豆变动历史
        await connection.execute(
          `INSERT INTO points_history (user_id, type, amount, description, order_id) 
          VALUES (?, 'spend', ?, ?, ?)`,
          [userId, order.total_rongdou, `订单支付 - ${order.order_no}`, order_id]
        );
        break;
      case 'mixed':
        // 积分和融豆组合支付逻辑

        if(user.points < order.total_points) {
          const needPoints = (user.points/10000).floor(0) * 10000;
          const needBeans = order.total_rongdou - needPoints/10000;
          if(user.balance < needBeans) {
            await connection.rollback();
            return res.status(400).json({ success: false, message: '融豆不足' });
          }

          await connection.execute(
            'UPDATE users SET points = points - ? WHERE id = ?',
            [needPoints, userId]
          );

          // 记录积分变动历史
          await connection.execute(
            `INSERT INTO points_history (user_id, type, amount, description, order_id) 
            VALUES (?, 'spend', ?, ?, ?)`,
            [userId, needPoints, `订单支付 - ${order.order_no}`, order_id]
          );

          await connection.execute(
            'UPDATE users SET balance = balance + ? WHERE id = ?',
            [needBeans, userId]
          );

          // 记录融豆变动历史
          await connection.execute(
            `INSERT INTO points_history (user_id, type, amount, description, order_id) 
            VALUES (?, 'spend', ?, ?, ?)`,
            [userId, needBeans, `订单支付 - ${order.order_no}`, order_id]
          );
        } else {
          await connection.execute(
            'UPDATE users SET points = points - ? WHERE id = ?',
            [order.total_points, userId]
          );
          // 记录积分变动历史
          await connection.execute(
            `INSERT INTO points_history (user_id, type, amount, description, order_id) 
            VALUES (?, 'spend', ?, ?, ?)`,
            [userId, order.total_points, `订单支付 - ${order.order_no}`, order_id]
          );
        }

        break;
      default:
        await connection.rollback();
        return res.status(400).json({ success: false, message: '支付方式配置错误' });
    }
    
    // // 根据支付方式处理扣费逻辑
    // let totalRongdouNeeded = order.total_rongdou; // 需要的融豆总数
    // let pointsToDeduct = 0; // 需要扣除的积分
    // let rongdouToDeduct = 0; // 需要扣除的融豆
    
    // if (!hasRongdou && !hasPoints) {
    //   await connection.rollback();
    //   return res.status(400).json({ success: false, message: '商品支付方式配置错误' });
    // }
    
    // if (hasPoints && !hasRongdou) {
    //   // 只支持积分支付，按10000积分=1融豆转换
    //   const pointsNeeded = totalRongdouNeeded * 10000;
    //   if (user.points < pointsNeeded) {
    //     await connection.rollback();
    //     return res.status(400).json({ success: false, message: '积分不足' });
    //   }
    //   pointsToDeduct = pointsNeeded;
    //   rongdouToDeduct = 0;
    // } else if (!hasPoints && hasRongdou) {
    //   // 只支持融豆支付
    //   if (user.balance < totalRongdouNeeded) {
    //     await connection.rollback();
    //     return res.status(400).json({ success: false, message: '融豆不足' });
    //   }
    //   pointsToDeduct = 0;
    //   rongdouToDeduct = totalRongdouNeeded;
    // } else if (hasPoints && hasRongdou) {
    //   // 组合支付：先扣积分，不足部分用融豆
    //   const availablePointsInRongdou = Math.floor(user.points / 10000); // 积分可转换的融豆数
      
    //   if (availablePointsInRongdou >= totalRongdouNeeded) {
    //     // 积分足够支付全部
    //     pointsToDeduct = totalRongdouNeeded * 10000;
    //     rongdouToDeduct = 0;
    //   } else {
    //     // 积分不够，需要组合支付
    //     pointsToDeduct = availablePointsInRongdou * 10000;
    //     rongdouToDeduct = totalRongdouNeeded - availablePointsInRongdou;
        
    //     if (user.balance < rongdouToDeduct) {
    //       await connection.rollback();
    //       return res.status(400).json({ success: false, message: '积分和融豆余额不足' });
    //     }
    //   }
    // }
    
    // console.log('扣费计算:', { totalRongdouNeeded, pointsToDeduct, rongdouToDeduct, userPoints: user.points, userBalance: user.balance });

    // 扣除积分
    // if (pointsToDeduct > 0) {
    //   await connection.execute(
    //     'UPDATE users SET points = points - ? WHERE id = ?',
    //     [pointsToDeduct, userId]
    //   );

    //   // 记录积分变动历史
    //   await connection.execute(
    //     `INSERT INTO points_history (user_id, type, amount, description, order_id) 
    //      VALUES (?, 'spend', ?, ?, ?)`,
    //     [userId, pointsToDeduct, `订单支付 - ${order.order_no}`, order_id]
    //   );
    // }

    // // 扣除融豆
    // if (rongdouToDeduct > 0) {
    //   await connection.execute(
    //     'UPDATE users SET balance = balance + ? WHERE id = ?',
    //     [rongdouToDeduct, userId]
    //   );

    //   // 记录融豆变动历史
    //   await connection.execute(
    //     `INSERT INTO rongdou_history (user_id, type, amount, description, order_id) 
    //      VALUES (?, 'spend', ?, ?, ?)`,
    //     [userId, rongdouToDeduct, `订单支付 - ${order.order_no}`, order_id]
    //   );
    // }

    // 更新优惠券记录
    if (couponRecordId) {
      await connection.execute(
        'UPDATE coupon_use SET use_time = NOW(), order_id = ? WHERE id = ?',
        [order_id, couponRecordId]
      );
    }

    // 更新订单状态和收货地址
    const addressStr = JSON.stringify({
      recipient_name: address.receiver_name,
      phone: address.receiver_phone,
      province: address.province,
      city: address.city,
      district: address.district,
      detail_address: address.detail_address
    });

    await connection.execute(
      `UPDATE orders SET status = 'pending', address = ?, updated_at = NOW() 
       WHERE id = ?`,
      [addressStr, order_id]
    );

    // 减组合库存
    // await connection.execute(
    //   'UPDATE product_spec_combinations SET stock = stock - 1 WHERE id = ?',
    //   [order.product_combination_id]
    // );

    await connection.commit();

    res.json({
      success: true,
      message: '订单支付成功',
      data: {
        order_id: order_id,
        order_no: order.order_no
      }
    });

  } catch (error) {
    await connection.rollback();
    console.error('确认支付失败:', error);
    res.status(500).json({ success: false, message: '确认支付失败' });
  } finally {
    connection.release();
  }
});

/**
 * @swagger
 * /api/orders/stats:
 *   get:
 *     summary: 获取订单统计信息（管理员权限）
 *     tags: [Orders]
 *     security:
 *       - bearerAuth: []
 *     responses:
 *       200:
 *         description: 成功获取订单统计信息
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 success:
 *                   type: boolean
 *                 data:
 *                   type: object
 *                   properties:
 *                     totalOrders:
 *                       type: integer
 *                       description: 总订单数
 *                     pendingOrders:
 *                       type: integer
 *                       description: 待发货订单数
 *                     completedOrders:
 *                       type: integer
 *                       description: 已完成订单数
 *                     monthOrders:
 *                       type: integer
 *                       description: 本月新增订单数
 *                     monthGrowthRate:
 *                       type: number
 *                       description: 月增长率
 *                     totalPointsConsumed:
 *                       type: number
 *                       description: 总积分消费
 *       401:
 *         description: 未授权
 *       403:
 *         description: 无管理员权限
 *       500:
 *         description: 服务器错误
 */
router.get('/stats', auth, adminAuth, async (req, res) => {
  try {
    // 总订单数
    const [totalOrders] = await getDB().execute('SELECT COUNT(*) as count FROM orders');

    // 待发货订单数
    const [pendingOrders] = await getDB().execute('SELECT COUNT(*) as count FROM orders WHERE status = "pending"');

    // 已完成订单数
    const [completedOrders] = await getDB().execute('SELECT COUNT(*) as count FROM orders WHERE status = "completed"');

    // 本月新增订单
    const [monthOrders] = await getDB().execute(
      'SELECT COUNT(*) as count FROM orders WHERE YEAR(created_at) = YEAR(NOW()) AND MONTH(created_at) = MONTH(NOW())'
    );

    // 上月订单数（用于计算增长率）
    const [lastMonthOrders] = await getDB().execute(
      'SELECT COUNT(*) as count FROM orders WHERE YEAR(created_at) = YEAR(DATE_SUB(NOW(), INTERVAL 1 MONTH)) AND MONTH(created_at) = MONTH(DATE_SUB(NOW(), INTERVAL 1 MONTH))'
    );

    // 计算月增长率
    const lastMonthCount = lastMonthOrders[0].count;
    const currentMonthCount = monthOrders[0].count;
    let monthGrowthRate = 0;
    if (lastMonthCount > 0) {
      monthGrowthRate = ((currentMonthCount - lastMonthCount) / lastMonthCount * 100).toFixed(1);
    }

    // 总积分消费
    const [totalPointsConsumed] = await getDB().execute('SELECT SUM(points_cost) as total FROM orders WHERE status != "cancelled"');

    res.json({
      success: true,
      data: {
        totalOrders: totalOrders[0].count,
        pendingOrders: pendingOrders[0].count,
        completedOrders: completedOrders[0].count,
        monthOrders: monthOrders[0].count,
        monthGrowthRate: parseFloat(monthGrowthRate),
        totalPointsConsumed: totalPointsConsumed[0].total || 0
      }
    });
  } catch (error) {
    console.error('获取订单统计失败:', error);
    res.status(500).json({ success: false, message: '获取订单统计失败' });
  }
});


module.exports = router;