更新完善页面

2026-06-03 14:15:55 +08:00
parent 4b7ae9c933
commit 1675662537
57 changed files with 7625 additions and 883 deletions
@@ -0,0 +1,277 @@
+const { query, transaction } = require('../config/database')
+const { paginate } = require('../utils/pagination')
+
+const REFUNDABLE_STATUSES = ['paid', 'completed']
+
+function currentUserId(ctx) {
+  return ctx.state.user ? ctx.state.user.id : null
+}
+
+function currentUser(ctx) {
+  return ctx.state.user
+}
+
+async function getRefunds(ctx) {
+  const { page, pageSize, status } = ctx.query
+  let sql = `
+    SELECT
+      r.*,
+      o.status as order_status,
+      o.total_price as order_amount,
+      u.phone as user_phone,
+      u.name as user_name
+    FROM refunds r
+    LEFT JOIN orders o ON r.order_id = o.id
+    LEFT JOIN users u ON r.user_id = u.id
+    WHERE 1=1
+  `
+  const params = []
+
+  if (status !== undefined && status !== '') {
+    sql += ' AND r.status = ?'
+    params.push(parseInt(status))
+  }
+
+  sql += ' ORDER BY r.created_at DESC'
+
+  const result = await paginate(query, sql, params, ctx.query.page, ctx.query.pageSize)
+
+  const rows = (result.data || []).map(item => ({
+    id: item.id,
+    orderId: item.order_id,
+    userId: item.user_id,
+    userPhone: item.user_phone,
+    userName: item.user_name,
+    type: item.type,
+    reason: item.reason,
+    amount: parseFloat(item.amount),
+    status: item.status,
+    adminRemark: item.admin_remark,
+    orderStatus: item.order_status,
+    orderAmount: parseFloat(item.order_amount),
+    processedAt: item.processed_at,
+    createdAt: item.created_at
+  }))
+  result.data = rows
+
+  ctx.body = {
+    code: 200,
+    ...result
+  }
+}
+
+async function getRefundById(ctx) {
+  const refundId = parseInt(ctx.params.id)
+  const refunds = await query(`
+    SELECT
+      r.*,
+      o.status as order_status,
+      o.total_price as order_amount,
+      u.phone as user_phone,
+      u.name as user_name
+    FROM refunds r
+    LEFT JOIN orders o ON r.order_id = o.id
+    LEFT JOIN users u ON r.user_id = u.id
+    WHERE r.id = ?
+  `, [refundId])
+
+  if (refunds.length === 0) {
+    ctx.status = 404
+    ctx.body = { code: 404, message: '退款申请不存在' }
+    return
+  }
+
+  const item = refunds[0]
+  const user = currentUser(ctx)
+  if (user.role !== 2 && user.role !== 1 && item.user_id !== user.id) {
+    ctx.status = 403
+    ctx.body = { code: 403, message: '无权查看该退款' }
+    return
+  }
+
+  ctx.body = {
+    code: 200,
+    data: {
+      id: item.id,
+      orderId: item.order_id,
+      userId: item.user_id,
+      userPhone: item.user_phone,
+      userName: item.user_name,
+      type: item.type,
+      reason: item.reason,
+      amount: parseFloat(item.amount),
+      status: item.status,
+      adminRemark: item.admin_remark,
+      orderStatus: item.order_status,
+      orderAmount: parseFloat(item.order_amount),
+      processedAt: item.processed_at,
+      createdAt: item.created_at
+    }
+  }
+}
+
+async function createRefund(ctx) {
+  const user = currentUser(ctx)
+  if (!user) {
+    ctx.status = 401
+    ctx.body = { code: 401, message: '未登录' }
+    return
+  }
+  const { orderId, type, reason, amount } = ctx.request.body || {}
+
+  if (!orderId || !reason) {
+    ctx.body = { code: 400, message: '缺少必要参数' }
+    return
+  }
+
+  const userId = user.id
+  const orders = await query('SELECT * FROM orders WHERE id = ? AND user_id = ?', [orderId, userId])
+  if (orders.length === 0) {
+    ctx.body = { code: 404, message: '订单不存在' }
+    return
+  }
+
+  const order = orders[0]
+  if (!REFUNDABLE_STATUSES.includes(order.status)) {
+    ctx.body = { code: 400, message: `订单当前状态(${order.status})不可申请退款` }
+    return
+  }
+
+  const existingRefund = await query('SELECT * FROM refunds WHERE order_id = ? AND status = 0', [orderId])
+  if (existingRefund.length > 0) {
+    ctx.body = { code: 400, message: '该订单已有待处理的退款申请' }
+    return
+  }
+
+  const orderTotal = parseFloat(order.total_price)
+  let refundAmount = orderTotal
+  if (amount !== undefined && amount !== null) {
+    const parsed = parseFloat(amount)
+    if (isNaN(parsed) || parsed <= 0) {
+      ctx.body = { code: 400, message: '退款金额无效' }
+      return
+    }
+    if (parsed > orderTotal) {
+      ctx.body = { code: 400, message: `退款金额不能超过订单金额 ¥${orderTotal.toFixed(2)}` }
+      return
+    }
+    refundAmount = parsed
+  }
+
+  const result = await transaction(async (conn) => {
+    const [refundResult] = await conn.execute(
+      'INSERT INTO refunds (order_id, user_id, type, reason, amount) VALUES (?, ?, ?, ?, ?)',
+      [orderId, userId, type || 1, reason, refundAmount]
+    )
+    await conn.execute("UPDATE orders SET status = 'refunding' WHERE id = ?", [orderId])
+    return refundResult.insertId
+  })
+
+  ctx.body = {
+    code: 200,
+    message: '退款申请已提交',
+    data: { id: result, orderId, amount: refundAmount }
+  }
+}
+
+async function processRefund(ctx) {
+  const refundId = parseInt(ctx.params.id)
+  const { status, adminRemark } = ctx.request.body || {}
+
+  if (status !== 1 && status !== 2) {
+    ctx.body = { code: 400, message: '请选择正确的处理结果' }
+    return
+  }
+
+  const refunds = await query('SELECT * FROM refunds WHERE id = ?', [refundId])
+  if (refunds.length === 0) {
+    ctx.body = { code: 404, message: '退款申请不存在' }
+    return
+  }
+
+  const refund = refunds[0]
+
+  if (refund.status !== 0) {
+    ctx.body = { code: 400, message: '该退款申请已处理' }
+    return
+  }
+
+  await transaction(async (conn) => {
+    await conn.execute(
+      'UPDATE refunds SET status = ?, admin_remark = ?, processed_at = NOW() WHERE id = ?',
+      [status, adminRemark || '', refundId]
+    )
+
+    if (status === 1) {
+      await conn.execute("UPDATE orders SET status = 'refunded' WHERE id = ?", [refund.order_id])
+
+      const [userRows] = await conn.execute('SELECT points FROM users WHERE id = ?', [refund.user_id])
+      if (userRows.length > 0) {
+        const deductPoints = Math.min(Math.floor(refund.amount), userRows[0].points)
+        if (deductPoints > 0) {
+          const newPoints = userRows[0].points - deductPoints
+          await conn.execute('UPDATE users SET points = ? WHERE id = ?', [newPoints, refund.user_id])
+          await conn.execute(
+            'INSERT INTO points_logs (user_id, type, amount, description) VALUES (?, ?, ?, ?)',
+            [refund.user_id, 'spend', deductPoints, `订单退款扣除积分: ${refund.order_id}`]
+          )
+        }
+      }
+    } else {
+      await conn.execute("UPDATE orders SET status = 'completed' WHERE id = ?", [refund.order_id])
+    }
+  })
+
+  ctx.body = {
+    code: 200,
+    message: status === 1 ? '已同意退款' : '已拒绝退款'
+  }
+}
+
+async function getUserRefunds(ctx) {
+  const user = currentUser(ctx)
+  if (!user) {
+    ctx.status = 401
+    ctx.body = { code: 401, message: '未登录' }
+    return
+  }
+  const requestedId = parseInt(ctx.query.userId)
+  const userId = (user.role === 2 || user.role === 1) && requestedId ? requestedId : user.id
+
+  const refunds = await query(`
+    SELECT
+      r.*,
+      o.status as order_status
+    FROM refunds r
+    LEFT JOIN orders o ON r.order_id = o.id
+    WHERE r.user_id = ?
+    ORDER BY r.created_at DESC
+  `, [userId])
+
+  const rows = refunds.map(item => ({
+    id: item.id,
+    orderId: item.order_id,
+    type: item.type,
+    reason: item.reason,
+    amount: parseFloat(item.amount),
+    status: item.status,
+    adminRemark: item.admin_remark,
+    orderStatus: item.order_status,
+    processedAt: item.processed_at,
+    createdAt: item.created_at
+  }))
+
+  ctx.body = {
+    code: 200,
+    data: rows
+  }
+}
+
+module.exports = {
+  getRefunds,
+  getRefundById,
+  createRefund,
+  processRefund,
+  getUserRefunds
+}
+