feat(miniprogram): add advance detail withdraw

Co-authored-by: Cursor <cursoragent@cursor.com>

miniprogram/pages/bx/advance/detail.vue

@@ -185,6 +185,16 @@
       <template v-if="detail?.status === 'rejected'">
         <button class="btn btn-primary" style="flex: 1" @click="handleResubmit">重新提交</button>
       </template>
+      <template v-if="canWithdraw">
+        <button
+          class="btn btn-ghost"
+          style="flex: 1"
+          :disabled="actionLoading.withdraw"
+          @click="handleWithdraw"
+        >
+          撤回
+        </button>
+      </template>
     </view>
   </view>
 </template>
@@ -202,15 +212,28 @@ import {
   formatApplyDateTime
 } from '@/utils/bxFormat'
 import { getSafeAreaStyle } from '@/utils/safeArea'
+import { useUserStore } from '@/stores/user'
 
 const safeAreaStyle = getSafeAreaStyle()
+const userStore = useUserStore()
 
 const detailId = ref('')
 const detail = ref(null)
 const detailTab = ref(0)
 const approvals = ref([])
 const attachments = ref([])
-const actionLoading = reactive({ submit: false, delete: false })
+const actionLoading = reactive({ submit: false, delete: false, withdraw: false })
+
+function currentUserId() {
+  const u = userStore.userInfo || {}
+  return String(u.id || u.userId || '')
+}
+
+const canWithdraw = computed(() => {
+  const d = detail.value
+  if (!d) return false
+  return d.status === 'pending' && String(d.applicantId || '') === currentUserId()
+})
 
 const isAdvanceIssued = computed(() => {
   const d = detail.value
@@ -220,7 +243,7 @@ const isAdvanceIssued = computed(() => {
 const showActions = computed(() => {
   if (!detail.value) return false
   const status = detail.value.status
-  return status === 'draft' || status === 'rejected'
+  return status === 'draft' || status === 'rejected' || canWithdraw.value
 })
 
 function goBack() {
@@ -336,6 +359,28 @@ function handleResubmit() {
   })
 }
 
+function handleWithdraw() {
+  if (!detail.value) return
+  uni.showModal({
+    title: '确认撤回',
+    content: '确定撤回该备用金申请？撤回后可修改再提交。',
+    confirmText: '确定撤回',
+    success: async (res) => {
+      if (!res.confirm) return
+      actionLoading.withdraw = true
+      try {
+        await advanceApi.withdraw(detail.value.id)
+        uni.showToast({ title: '已撤回', icon: 'success' })
+        await loadDetail()
+      } catch (e) {
+        // toasted
+      } finally {
+        actionLoading.withdraw = false
+      }
+    }
+  })
+}
+
 onLoad((query) => {
   detailId.value = query?.id ? String(query.id) : ''
   loadDetail()