feat: tenant门店管理首批接口落地

src/Application/TakeoutSaaS.Application/App/Stores/Handlers/GetStoreStatsQueryHandler.cs

@@ -0,0 +1,45 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Stores.Dto;
+using TakeoutSaaS.Application.App.Stores.Queries;
+using TakeoutSaaS.Application.App.Stores.Services;
+using TakeoutSaaS.Domain.Stores.Enums;
+using TakeoutSaaS.Domain.Stores.Repositories;
+
+namespace TakeoutSaaS.Application.App.Stores.Handlers;
+
+/// <summary>
+/// 租户端门店统计查询处理器。
+/// </summary>
+public sealed class GetStoreStatsQueryHandler(
+    StoreContextService storeContextService,
+    IStoreRepository storeRepository)
+    : IRequestHandler<GetStoreStatsQuery, StoreStatsDto>
+{
+    /// <inheritdoc />
+    public async Task<StoreStatsDto> Handle(GetStoreStatsQuery request, CancellationToken cancellationToken)
+    {
+        // 1. 解析上下文
+        var context = storeContextService.GetRequiredContext();
+
+        // 2. 查询当前商户全部门店
+        var stores = await storeRepository.SearchAsync(
+            context.TenantId,
+            context.MerchantId,
+            status: null,
+            auditStatus: null,
+            businessStatus: null,
+            ownershipType: null,
+            keyword: null,
+            includeDeleted: false,
+            cancellationToken: cancellationToken);
+
+        // 3. 统计并返回
+        return new StoreStatsDto
+        {
+            Total = stores.Count,
+            Operating = stores.Count(store => store.BusinessStatus == StoreBusinessStatus.Open),
+            Resting = stores.Count(store => store.BusinessStatus == StoreBusinessStatus.Resting),
+            PendingAudit = stores.Count(store => store.AuditStatus == StoreAuditStatus.Pending)
+        };
+    }
+}