fix: 修复月卡无法编辑次数的问题

packages/app/src/pages/admin/member-edit.vue

@@ -55,9 +55,16 @@
           </picker>
         </view>
 
-        <view v-if="isTimeBasedCard" class="field">
-          <text class="field-label">剩余次数</text>
-          <input class="field-input" type="number" v-model="editForm.remainingTimes" placeholder="请输入剩余次数" />
+        <view v-if="selectedCardType" class="field">
+          <text class="field-label">
+            {{ canLeaveTimesEmpty ? '剩余次数（留空不限次）' : '剩余次数' }}
+          </text>
+          <input
+            class="field-input"
+            type="number"
+            v-model="editForm.remainingTimes"
+            :placeholder="canLeaveTimesEmpty ? '留空表示不限次' : '请输入剩余次数'"
+          />
         </view>
 
         <view class="field">
@@ -124,7 +131,7 @@ const editForm = ref({
   membershipId: '' as string | '',
   cardTypeIndex: 0,
   cardTypeId: '',
-  remainingTimes: null as number | null,
+  remainingTimes: null as number | string | null,
   startDate: '',
   expireDate: '',
   manuallyEditedExpire: false,
@@ -137,9 +144,15 @@ const membershipPickerLabels = computed(() =>
   existingMemberships.value.map((item) => `${item.cardType.name} · ${item.status}`),
 )
 
-const isTimeBasedCard = computed(() => {
-  const card = cardTypes.value[editForm.value.cardTypeIndex]
-  return card && (card.type === 'TIMES' || card.type === 'TRIAL')
+const selectedCardType = computed(() => cardTypes.value[editForm.value.cardTypeIndex] ?? null)
+const canLeaveTimesEmpty = computed(() => {
+  const cardType = selectedCardType.value
+  const membership = editingMembership.value
+  if (!cardType || cardType.type !== 'DURATION') return false
+
+  return cardType.totalTimes === null || (
+    membership?.cardTypeId === cardType.id && membership.remainingTimes === null
+  )
 })
 
 function calculateExpireDate(startDate: string, durationDays: number): string {
@@ -183,11 +196,11 @@ function onMembershipPick(e: { detail: { value: number } }) {
 function onCardTypeChange(e: { detail: { value: number } }) {
   const idx = Number(e.detail.value)
   const cardType = cardTypes.value[idx]
+  if (!cardType) return
+
   editForm.value.cardTypeIndex = idx
   editForm.value.cardTypeId = cardType.id
-  if (cardType.totalTimes != null) {
-    editForm.value.remainingTimes = cardType.totalTimes
-  }
+  editForm.value.remainingTimes = cardType.totalTimes
   if (!editForm.value.manuallyEditedExpire) {
     editForm.value.startDate = formatDateLocal(new Date())
     editForm.value.expireDate = calculateExpireDate(formatDateLocal(new Date()), cardType.durationDays)
@@ -209,6 +222,17 @@ function onExpireDateChange(e: { detail: { value: string } }) {
   editForm.value.manuallyEditedExpire = true
 }
 
+function parseRemainingTimes(): number | null | undefined {
+  const rawValue = editForm.value.remainingTimes
+  if (rawValue === null || (typeof rawValue === 'string' && rawValue.trim() === '')) {
+    return null
+  }
+
+  const remainingTimes = Number(rawValue)
+  if (!Number.isInteger(remainingTimes) || remainingTimes < 0) return undefined
+  return remainingTimes
+}
+
 async function loadPage() {
   pageLoading.value = true
   try {
@@ -237,6 +261,17 @@ async function onSave() {
     uni.showToast({ title: '请选择卡类型', icon: 'none' })
     return
   }
+
+  const remainingTimes = parseRemainingTimes()
+  if (remainingTimes === undefined) {
+    uni.showToast({ title: '剩余次数需为非负整数', icon: 'none' })
+    return
+  }
+  if (remainingTimes === null && !canLeaveTimesEmpty.value) {
+    uni.showToast({ title: '请输入剩余次数', icon: 'none' })
+    return
+  }
+
   submitting.value = true
   try {
     await adminStore.updateMemberProfile(userId.value, {
@@ -246,7 +281,7 @@ async function onSave() {
     await adminStore.updateUserMembership(userId.value, {
       ...(editForm.value.membershipId ? { membershipId: editForm.value.membershipId } : {}),
       cardTypeId: editForm.value.cardTypeId,
-      remainingTimes: isTimeBasedCard.value ? Number(editForm.value.remainingTimes) || 0 : null,
+      remainingTimes,
       startDate: editForm.value.startDate,
       expireDate: editForm.value.expireDate,
     })