feat: tenants 列表支持名称/联系人/电话/认证状态过滤

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/SearchTenantsQueryHandler.cs

@@ -15,26 +15,47 @@ public sealed class SearchTenantsQueryHandler(ITenantRepository tenantRepository
     /// <inheritdoc />
     public async Task<PagedResult<TenantDto>> Handle(SearchTenantsQuery request, CancellationToken cancellationToken)
     {
-        // 1. 查询租户列表
-        var tenants = await tenantRepository.SearchAsync(request.Status, request.Keyword, cancellationToken);
-        var total = tenants.Count;
+        // 1. 按条件分页查询租户
+        var (tenants, total) = await tenantRepository.SearchPagedAsync(
+            request.Status,
+            request.VerificationStatus,
+            request.Name,
+            request.ContactName,
+            request.ContactPhone,
+            request.Keyword,
+            request.Page,
+            request.PageSize,
+            cancellationToken);
 
-        // 2. 分页
-        var paged = tenants
-            .Skip((request.Page - 1) * request.PageSize)
-            .Take(request.PageSize)
-            .ToList();
-
-        // 3. 映射 DTO（带订阅与认证）
-        var result = new List<TenantDto>(paged.Count);
-        foreach (var tenant in paged)
+        // 2. (空行后) 无数据直接返回
+        if (tenants.Count == 0)
         {
-            var subscription = await tenantRepository.GetActiveSubscriptionAsync(tenant.Id, cancellationToken);
-            var verification = await tenantRepository.GetVerificationProfileAsync(tenant.Id, cancellationToken);
+            return new PagedResult<TenantDto>([], request.Page, request.PageSize, total);
+        }
+
+        // 3. (空行后) 批量查询订阅与实名资料（避免 N+1）
+        var tenantIds = tenants.Select(x => x.Id).ToArray();
+        var subscriptionsTask = tenantRepository.GetSubscriptionsAsync(tenantIds, cancellationToken);
+        var verificationsTask = tenantRepository.GetVerificationProfilesAsync(tenantIds, cancellationToken);
+        await Task.WhenAll(subscriptionsTask, verificationsTask);
+
+        // 4. (空行后) 构建订阅与实名资料映射
+        var subscriptionByTenantId = (await subscriptionsTask)
+            .GroupBy(x => x.TenantId)
+            .ToDictionary(x => x.Key, x => x.FirstOrDefault());
+        var verificationByTenantId = (await verificationsTask)
+            .ToDictionary(x => x.TenantId);
+
+        // 5. (空行后) 映射 DTO（带订阅与认证）
+        var result = new List<TenantDto>(tenants.Count);
+        foreach (var tenant in tenants)
+        {
+            subscriptionByTenantId.TryGetValue(tenant.Id, out var subscription);
+            verificationByTenantId.TryGetValue(tenant.Id, out var verification);
             result.Add(TenantMapping.ToDto(tenant, subscription, verification));
         }
 
-        // 4. 返回分页结果
+        // 6. (空行后) 返回分页结果
         return new PagedResult<TenantDto>(result, request.Page, request.PageSize, total);
     }
 }