🐞 fix(shop): 修复弱网下商品可买次数为负问题

game-server/app/services/shopService.ts

@@ -106,6 +106,22 @@ export function getShopPrice(goodId: number, count: number, buyCount: number, st
     }]
 }
 
+/**
+ * 获取商品的最大购买次数
+ *
+ * @export
+ * @param {string} str  比如: 1&0|2&50|3&100|4&150|5&200
+ */
+export function getShopMaxBuyTimes(str: string) {
+    let arr = parseShopPrice(str);
+    for (let { times, maxTimes } of arr) {
+        if (maxTimes === -1) {
+            return times;
+        }
+    }
+    return 0;
+}
+
 function parseShopPrice(str: string) {
     let result = new Array<{ times: number, price: number, maxTimes: number }>();
     if (!str) return result;