new api

controllers/points-goods.js

@@ -0,0 +1,143 @@
+const { query } = require('../config/database')
+
+async function getPointsGoods(ctx) {
+  let sql = 'SELECT * FROM points_goods WHERE 1=1'
+  const params = []
+
+  if (ctx.query.visible === '1') {
+    sql += ' AND is_show = 1'
+  }
+
+  sql += ' ORDER BY points ASC'
+  const goods = await query(sql, params)
+
+  ctx.body = {
+    code: 200,
+    data: goods
+  }
+}
+
+async function getPointsGoodsById(ctx) {
+  const id = parseInt(ctx.params.id)
+  const goods = await query('SELECT * FROM points_goods WHERE id = ?', [id])
+
+  if (goods.length > 0) {
+    ctx.body = { code: 200, data: goods[0] }
+  } else {
+    ctx.body = { code: 404, message: '积分商品不存在' }
+  }
+}
+
+async function createPointsGoods(ctx) {
+  const { name, points, stock, image, description } = ctx.request.body
+
+  if (!name || points === undefined) {
+    ctx.body = { code: 400, message: '请填写商品名称和所需积分' }
+    return
+  }
+
+  const result = await query(
+    'INSERT INTO points_goods (name, points, stock, image, description) VALUES (?, ?, ?, ?, ?)',
+    [name, parseInt(points) || 0, parseInt(stock) || 0, image || '', description || '']
+  )
+
+  ctx.body = {
+    code: 200,
+    message: '添加成功',
+    data: { id: result.insertId }
+  }
+}
+
+async function updatePointsGoods(ctx) {
+  const id = parseInt(ctx.params.id)
+  const { name, points, stock, image, description } = ctx.request.body
+
+  if (!name || points === undefined) {
+    ctx.body = { code: 400, message: '请填写商品名称和所需积分' }
+    return
+  }
+
+  const result = await query(
+    'UPDATE points_goods SET name = ?, points = ?, stock = ?, image = ?, description = ? WHERE id = ?',
+    [name, parseInt(points) || 0, parseInt(stock) || 0, image || '', description || '', id]
+  )
+
+  if (result.affectedRows > 0) {
+    ctx.body = { code: 200, message: '更新成功' }
+  } else {
+    ctx.body = { code: 404, message: '积分商品不存在' }
+  }
+}
+
+async function deletePointsGoods(ctx) {
+  const id = parseInt(ctx.params.id)
+
+  const result = await query('DELETE FROM points_goods WHERE id = ?', [id])
+  if (result.affectedRows > 0) {
+    ctx.body = { code: 200, message: '删除成功' }
+  } else {
+    ctx.body = { code: 404, message: '积分商品不存在' }
+  }
+}
+
+async function exchangePointsGoods(ctx) {
+  const { userId, goodsId, quantity } = ctx.request.body
+
+  if (!userId || !goodsId) {
+    ctx.body = { code: 400, message: '参数不完整' }
+    return
+  }
+
+  const qty = quantity || 1
+
+  const users = await query('SELECT * FROM users WHERE id = ? AND status = 1', [userId])
+  if (users.length === 0) {
+    ctx.body = { code: 404, message: '用户不存在' }
+    return
+  }
+  const user = users[0]
+
+  const goods = await query('SELECT * FROM points_goods WHERE id = ? AND is_show = 1', [goodsId])
+  if (goods.length === 0) {
+    ctx.body = { code: 404, message: '积分商品不存在' }
+    return
+  }
+  const goodsItem = goods[0]
+
+  if (goodsItem.stock < qty) {
+    ctx.body = { code: 400, message: '库存不足' }
+    return
+  }
+
+  const totalPoints = goodsItem.points * qty
+  if (user.points < totalPoints) {
+    ctx.body = { code: 400, message: '积分不足' }
+    return
+  }
+
+  const newPoints = user.points - totalPoints
+  await query('UPDATE users SET points = ? WHERE id = ?', [newPoints, userId])
+  await query('UPDATE points_goods SET stock = stock - ? WHERE id = ?', [qty, goodsId])
+
+  await query(
+    'INSERT INTO points_logs (user_id, type, amount, description) VALUES (?, ?, ?, ?)',
+    [userId, 'spend', totalPoints, `兑换「${goodsItem.name}」x${qty}`]
+  )
+
+  ctx.body = {
+    code: 200,
+    message: '兑换成功',
+    data: {
+      remainingPoints: newPoints
+    }
+  }
+}
+
+module.exports = {
+  getPointsGoods,
+  getPointsGoodsById,
+  createPointsGoods,
+  updatePointsGoods,
+  deletePointsGoods,
+  exchangePointsGoods
+}