fix(submit): 修复支付流程逻辑并优化错误处理

重构支付流程以支持订单重试，避免重复创建订单
添加支付失败时的错误提示和状态管理
优化加载状态显示和代码结构

 <!--
 <!--
  * @Date: 2024-01-15 16:25:51
  * @Date: 2024-01-15 16:25:51
  * @LastEditors: hookehuyr hookehuyr@gmail.com
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2026-01-12 18:42:42
+ * @LastEditTime: 2026-01-12 18:54:33
  * @FilePath: /xyxBooking-weapp/src/pages/submit/index.vue
  * @FilePath: /xyxBooking-weapp/src/pages/submit/index.vue
  * @Description: 预约人员信息
  * @Description: 预约人员信息
 -->
 -->
@@ -116,10 +116,15 @@ const goToVisitor = () => {
 const submitBtn = async () => {
 const submitBtn = async () => {
   if (!checked_visitors.value.length) {
   if (!checked_visitors.value.length) {
     Taro.showToast({ title: '请先添加参观者', icon: 'none' })
     Taro.showToast({ title: '请先添加参观者', icon: 'none' })
-  } else {
+    return;
+  }
+
+  let pay_id = pending_pay_id.value;
+
+  if (!pay_id) {
     // TAG: 提交订单跳转到支付页面
     // TAG: 提交订单跳转到支付页面
     Taro.showLoading({ title: '提交中...' });
     Taro.showLoading({ title: '提交中...' });
-    const { code, data } = await addReserveAPI({
+    const { code, data, msg } = await addReserveAPI({
         reserve_date: date.value,
         reserve_date: date.value,
         begin_time: time.value.split('-')[0],
         begin_time: time.value.split('-')[0],
         end_time: time.value.split('-')[1],
         end_time: time.value.split('-')[1],
@@ -128,30 +133,44 @@ const submitBtn = async () => {
 
 
     Taro.hideLoading();
     Taro.hideLoading();
 
 
-    if (code) {
-      // 如果金额大于零, 走微信支付, 如果等于零直接跳转成功页
-      if (total.value > 0) {
-        const payParams = await wxPayAPI({ pay_id: data.pay_id }); // 参数接口
-
-        if (payParams.code) {
-            let pay = payParams.data;
-            Taro.requestPayment({
-                timeStamp: pay.timeStamp,
-                nonceStr: pay.nonceStr,
-                package: pay.package,
-                signType: pay.signType,
-                paySign: pay.paySign,
-                success (res) {
-                    go('/success', { pay_id: data.pay_id });
-                },
-                fail (res) { }
-            })
-        }
-      } else {
-        // 金额等于零, 直接跳转成功页
-        go('/success', { pay_id: data.pay_id });
-      }
+    if (!code || code !== 1) {
+      Taro.showToast({ title: msg || '提交失败', icon: 'none' });
+      return;
     }
     }
+    pay_id = data.pay_id;
+    pending_pay_id.value = pay_id;
+  }
+
+  // 如果金额大于零, 走微信支付, 如果等于零直接跳转成功页
+  if (total.value > 0) {
+    Taro.showLoading({ title: '支付准备中...' });
+    const payParams = await wxPayAPI({ pay_id: pay_id }); // 参数接口
+    Taro.hideLoading();
+
+    if (payParams.code) {
+        let pay = payParams.data;
+        Taro.requestPayment({
+            timeStamp: pay.timeStamp,
+            nonceStr: pay.nonceStr,
+            package: pay.package,
+            signType: pay.signType,
+            paySign: pay.paySign,
+            success (res) {
+                go('/success', { pay_id: pay_id });
+            },
+            fail (res) {
+                // 支付取消或失败，保留 pending_pay_id，允许用户再次点击按钮尝试支付同一订单
+                // 只有当 wxPayAPI 获取支付参数失败时（如下面的 else 分支），才重置 ID 以便重新创建订单
+                Taro.showToast({ title: '支付失败，请重试', icon: 'none' });
+            }
+        })
+    } else {
+        pending_pay_id.value = null; // 支付参数获取失败，重置订单ID
+        Taro.showToast({ title: payParams.msg || '获取支付信息失败', icon: 'none' });
+    }
+  } else {
+    // 金额等于零, 直接跳转成功页
+    go('/success', { pay_id: pay_id });
   }
   }
 }
 }