refactor(购物车): 清理无用代码并优化数量计算逻辑

移除购物车商品id列表相关无用代码
优化商品数量计算逻辑，提取minNum变量提高可读性
更新api文档注释，保持一致性

libs/api/index.js

@@ -107,11 +107,6 @@ export function getSystemSettingApi(params = {}) {
   });
 }
 
-// //修改默认收货地址
-// module.exports.editDefaultAddress = function (postData, success) {
-//   request('/receiverAddr/updateLastDefaultAddr.do', 'get', postData, success)
-// }
-
 /**
  * 修改默认收货地址
  * @param {*} params
@@ -305,6 +300,10 @@ export function yesterdayOrderApi() {
 //   request('/cart/list.do', 'GET', postData, success)
 // };
 
+/**
+ * 获取购物车信息
+ * @param {{warehouseId: unknown, addrId: unknown}} params
+ */
 export function getCartInfoApi(params = {}) {
   return request({
     errorMessage: "购物车信息",
@@ -332,12 +331,12 @@ export function addCartApi(data = {}) {
 }
 
 /**
- * 订单预览
+ * 预览订单
  * @param {*} params
  */
 export function previewApi(params = {}) {
   return request({
-    errorMessage: "订单预览",
+    errorMessage: "预览订单",
     method: "GET",
     params,
     url: "/order/preview.do",

pages/allDish/allDish.vue

@@ -18,7 +18,7 @@ const store = useStore();
 /**
  * 购物车商品id列表
  */
-const keys = [];
+// const keys = [];
 
 // const plugin = requirePlugin("WechatSI")
 // const manager = plugin.getRecordRecognitionManager()
@@ -711,9 +711,9 @@ async function toCart(item, diff) {
     });
   }
 
-  keys.push(item.id);
+  // keys.push(item.id);
   const res = await addCartApi(data);
-  keys.splice(item.id, 1);
+  // keys.splice(item.id, 1);
   if (res.code !== "0") {
     return;
   }
@@ -740,8 +740,9 @@ function onMinus(item) {
 
   // 判空为 0, 否则转换为数字
   item.sum = Number(item.sum) || 0;
+  const minNum = item.minNum || 1;
   // 达到起订量(item.minNum)直接清空, 否则每次-1
-  const diff = -(item.sum === (item.minNum || 1) ? (item.minNum || 1) : 1);
+  const diff = -(item.sum === minNum ? minNum : 1);
   item.sum += diff;
 
   // 保持输入框与购物车数量同步