fix: 对对碰默认不使用优惠券

对对碰支付弹窗新增不使用优惠券选项，并关闭默认使用次数卡，避免优惠券选择器被禁用。

components/PaymentPopup.vue

@@ -65,21 +65,22 @@
             <picker
               class="picker-full"
               mode="selector"
-              :range="coupons"
+              :range="couponOptions"
               range-key="name"
               @change="onCouponChange"
               :value="couponIndex"
-              :disabled="(!coupons || coupons.length === 0) || useGamePass"
+              :disabled="couponPickerDisabled"
             >
               <view class="picker-display" :class="{ 'picker-disabled': useGamePass }">
                 <text v-if="useGamePass" class="placeholder" style="color: #666;">
                   多次卡不可与优惠券同享
                 </text>
-                <text v-if="selectedCoupon" class="selected-text">
+                <text v-else-if="selectedCoupon" class="selected-text">
                   {{ selectedCoupon.name }} (-¥{{ effectiveCouponDiscount.toFixed(2) }})
                   <text v-if="selectedCoupon.amount > maxDeductible" style="font-size: 20rpx; color: #FF9800;">(最高抵扣50%)</text>
                 </text>
-                <text v-else-if="!coupons || coupons.length === 0" class="placeholder">暂无优惠券可用</text>
+                <text v-else-if="!hasUsableCoupons" class="placeholder">暂无优惠券可用</text>
+                <text v-else-if="couponOptionalSelected" class="placeholder">不使用优惠券</text>
                 <text v-else class="placeholder">请选择优惠券</text>
                 <text class="arrow"></text>
               </view>
@@ -129,7 +130,10 @@ const props = defineProps({
   coupons: { type: Array, default: () => [] },
   propCards: { type: Array, default: () => [] },
   showCards: { type: Boolean, default: true },
-  gamePasses: { type: Object, default: () => null } // { total_remaining, passes }
+  gamePasses: { type: Object, default: () => null }, // { total_remaining, passes }
+  couponOptional: { type: Boolean, default: false },
+  defaultUseCoupon: { type: Boolean, default: true },
+  defaultUseGamePass: { type: Boolean, default: true }
 })
 
 const emit = defineEmits(['update:visible', 'confirm', 'cancel'])
@@ -203,6 +207,20 @@ const couponIndex = ref(-1)
 const cardIndex = ref(-1)
 const useGamePass = ref(false)
 
+const hasUsableCoupons = computed(() => Array.isArray(props.coupons) && props.coupons.length > 0)
+
+const couponOptions = computed(() => {
+  const list = Array.isArray(props.coupons) ? props.coupons : []
+  if (!props.couponOptional) return list
+  return [{ id: 0, name: '不使用优惠券', amount: 0, noCoupon: true }, ...list]
+})
+
+const couponOptionalSelected = computed(() => props.couponOptional && Number(couponIndex.value) === 0)
+
+const couponPickerDisabled = computed(() => {
+  return useGamePass.value || !hasUsableCoupons.value
+})
+
 // 次数卡余额
 const gamePassRemaining = computed(() => {
   return props.gamePasses?.total_remaining || 0
@@ -211,8 +229,7 @@ const gamePassRemaining = computed(() => {
 // 监听弹窗打开，若有次数卡则默认选中
 watch(() => props.visible, (newVal) => {
   if (newVal) {
-    // 若有次数卡，默认选中
-    useGamePass.value = gamePassRemaining.value > 0
+    useGamePass.value = props.defaultUseGamePass && gamePassRemaining.value > 0
   }
 })
 
@@ -221,12 +238,20 @@ function toggleGamePass() {
   // Mutually Exclusive: If Game Pass is ON, clear Coupon.
   if (useGamePass.value) {
     couponIndex.value = -1
+  } else {
+    resetCouponSelection()
   }
 }
 
 const selectedCoupon = computed(() => {
-  if (couponIndex.value >= 0 && props.coupons[couponIndex.value]) {
-    return props.coupons[couponIndex.value]
+  const index = Number(couponIndex.value)
+  if (Number.isNaN(index)) return null
+  if (props.couponOptional) {
+    if (index <= 0) return null
+    return props.coupons[index - 1] || null
+  }
+  if (index >= 0 && props.coupons[index]) {
+    return props.coupons[index]
   }
   return null
 })
@@ -262,24 +287,37 @@ const finalPayAmount = computed(() => {
   return Math.max(0, amt - effectiveCouponDiscount.value).toFixed(2)
 })
 
+function resetCouponSelection() {
+  if (useGamePass.value) {
+    couponIndex.value = -1
+    return
+  }
+  if (!hasUsableCoupons.value) {
+    couponIndex.value = props.couponOptional ? 0 : -1
+    return
+  }
+  if (props.couponOptional) {
+    couponIndex.value = props.defaultUseCoupon ? 1 : 0
+    return
+  }
+  if (props.defaultUseCoupon && couponIndex.value < 0) {
+    couponIndex.value = 0
+  }
+}
+
 watch(
   [() => props.visible, () => (Array.isArray(props.coupons) ? props.coupons.length : 0)],
-  ([vis, len]) => {
+  ([vis]) => {
     if (!vis) return
     cardIndex.value = -1
-    if (len <= 0) {
-      couponIndex.value = -1
-      return
-    }
-    if (couponIndex.value < 0) {
-      couponIndex.value = 0
-    }
+    resetCouponSelection()
   },
   { immediate: true }
 )
 
 function onCouponChange(e) {
-  couponIndex.value = e.detail.value
+  const index = Number(e.detail.value)
+  couponIndex.value = Number.isNaN(index) ? -1 : index
 }
 
 function onCardChange(e) {

pages-activity/activity/duiduipeng/index.vue

@@ -180,6 +180,9 @@
         :propCards="propCards"
         :showCards="true"
         :gamePasses="gamePasses"
+        :couponOptional="true"
+        :defaultUseCoupon="false"
+        :defaultUseGamePass="false"
         @confirm="onPaymentConfirm"
       />