perf: 消除 BOM 齐套分析的全量库存拉取和 O(N·M) 嵌套循环，改为使用后端返回的 current_stock

inventory-web/src/views/outbound/Selection.vue

@@ -432,7 +432,7 @@
 import { ref, computed, watch } from 'vue'
 import { Printer, Search, Plus, Download, List } from '@element-plus/icons-vue'
 import { ElMessage, ElTable, ElMessageBox } from 'element-plus'
-import { getAllStock, getStockList, printSelectionList } from '@/api/inbound/stock'
+import { getStockList, printSelectionList } from '@/api/inbound/stock'
 import { getBomList, getBomDetail } from '@/api/bom'
 import { useUserStore } from '@/stores/user'
 import { submitOutboundRequest } from '@/api/outbound'
@@ -467,7 +467,6 @@ const requestApproverId = ref<number | null>(null)
 const approvers = ref<any[]>([])
 const requestSubmitting = ref(false)
 
-const allStockData = ref<any[]>([])
 const stockList = ref<any[]>([])     // 服务端分页数据
 const stockTotal = ref(0)
 const stockPage = ref(1)
@@ -525,43 +524,35 @@ const totalExportCount = computed(() => {
   return validSelectedItems.value.reduce((sum, item) => sum + (item.export_quantity || 0), 0)
 })
 
-// --- BOM 齐套性分析计算属性 ---
+// --- BOM 齐套性分析计算属性（使用后端已计算的 current_stock，O(N)，无嵌套循环）---
 const maxBuildableSets = computed(() => {
-  if (currentBomDetail.value.length === 0 || allStockData.value.length === 0) return 0
-  let minSets = Infinity
-  currentBomDetail.value.forEach((bomItem: any) => {
-    const dosage = parseFloat(bomItem.dosage) || 0  // 单套需求量
-    if (dosage <= 0) return
-    // 匹配库存中的可用数量
-    const stockItem = allStockData.value.find((s: any) => s.base_id && s.base_id == bomItem.child_id)
-    const available = stockItem ? (stockItem.availableCount || 0) : 0
-    const buildable = Math.floor(available / dosage)
-    if (buildable < minSets) minSets = buildable
-  })
-  return minSets === Infinity ? 0 : minSets
+  if (!currentBomDetail.value?.length) return 0
+  return currentBomDetail.value.reduce((minSets, bomItem: any) => {
+    const dosage = parseFloat(bomItem.dosage) || 0
+    if (dosage <= 0) return minSets
+    const stock = parseFloat(bomItem.current_stock) || 0
+    return Math.min(minSets, Math.floor(stock / dosage))
+  }, Infinity)
 })
 
 const shortageList = computed(() => {
-  if (currentBomDetail.value.length === 0 || allStockData.value.length === 0 || bomSets.value <= 0) return []
-  const target = bomSets.value
-  const shortages: any[] = []
-  currentBomDetail.value.forEach((bomItem: any) => {
-    const dosage = parseFloat(bomItem.dosage) || 0  // 单套需求量
-    const totalNeed = dosage * target
-    const stockItem = allStockData.value.find((s: any) => s.base_id && s.base_id == bomItem.child_id)
-    const available = stockItem ? (stockItem.availableCount || 0) : 0
-    const shortage = totalNeed - available
-    if (shortage > 0) {
-      shortages.push({
-        name: bomItem.child_name || bomItem.name || '未知物料',
-        sku: bomItem.child_sku || bomItem.sku || '-',
-        need: totalNeed,
-        available: available,
-        shortage: shortage
+  if (!currentBomDetail.value?.length || bomSets.value <= 0) return []
+  return currentBomDetail.value
+      .map((bomItem: any) => {
+        const dosage = parseFloat(bomItem.dosage) || 0
+        const totalNeed = dosage * bomSets.value
+        const stock = parseFloat(bomItem.current_stock) || 0
+        const shortage = Math.max(0, totalNeed - stock)
+        return { ...bomItem, shortage, available: stock }
       })
-    }
-  })
-  return shortages
+      .filter((item: any) => item.shortage > 0)
+      .map((item: any) => ({
+        name: item.child_name || item.name || '未知物料',
+        sku: item.child_sku || item.sku || '-',
+        need: item.dosage * bomSets.value,
+        available: item.available,
+        shortage: item.shortage
+      }))
 })
 
 const hasShortage = computed(() => shortageList.value.length > 0 && bomSets.value > maxBuildableSets.value)
@@ -576,31 +567,6 @@ const getTypeTag = (type: string) => {
   }
 }
 
-// --- 核心逻辑 0：加载全量库存数据（BOM 齐套计算依赖此数据） ---
-const ensureAllStockLoaded = async () => {
-  if (allStockData.value.length === 0) {
-    try {
-      const res: any = await getAllStock()
-      const rawMaterials = (res.materials || []).map((i: any) => ({ ...i, type: 'material', typeLabel: '采购件' }))
-      const rawSemis = (res.semis || []).map((i: any) => ({ ...i, type: 'semi', typeLabel: '半成品' }))
-      const rawProducts = (res.products || []).map((i: any) => ({ ...i, type: 'product', typeLabel: '成品' }))
-      const list = [...rawMaterials, ...rawSemis, ...rawProducts]
-      allStockData.value = list.map((i: any) => ({
-        ...i,
-        name: i.name || i.material_name || i.product_name || '未知名称',
-        standard: i.standard || i.spec_model || '',
-        warehouse_location: i.warehouse_location || i.warehouse_loc || i.full_path || '',
-        uniqueKey: `${i.type}_${i.id}`,
-        available_quantity: parseFloat(i.available_quantity) || 0,
-        availableCount: parseFloat(i.available_quantity) || 0,
-        export_quantity: 1
-      }))
-    } catch (e) {
-      ElMessage.error('加载全量库存数据失败（BOM 功能可能受影响）')
-    }
-  }
-}
-
 // --- 核心逻辑 1：手动添加库存 ---
 
 // 服务端加载库存列表
@@ -633,8 +599,6 @@ const openManualSelect = async () => {
   stockPage.value = 1
   searchKeyword.value = ''
   await loadStockList()
-  await ensureAllStockLoaded()
-  allStockData.value.forEach(item => item.export_quantity = 0)
 }
 
 // 搜索框防抖触发服务端过滤
@@ -739,7 +703,6 @@ const openBomSelect = async () => {
   } catch (e) {
     ElMessage.error('加载 BOM 列表失败')
   }
-  await ensureAllStockLoaded()
 }
 
 // 监听 BOM 选择变化，自动加载明细并计算齐套性