feat: 商户类目数据库化并增加权限种子

src/Application/TakeoutSaaS.Application/App/Merchants/Handlers/GetMerchantAuditLogsQueryHandler.cs

@@ -0,0 +1,35 @@
+using System.Linq;
+using MediatR;
+using TakeoutSaaS.Application.App.Merchants.Dto;
+using TakeoutSaaS.Application.App.Merchants.Queries;
+using TakeoutSaaS.Domain.Merchants.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Results;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Merchants.Handlers;
+
+/// <summary>
+/// 读取商户审核日志。
+/// </summary>
+public sealed class GetMerchantAuditLogsQueryHandler(
+    IMerchantRepository merchantRepository,
+    ITenantProvider tenantProvider)
+    : IRequestHandler<GetMerchantAuditLogsQuery, PagedResult<MerchantAuditLogDto>>
+{
+    private readonly IMerchantRepository _merchantRepository = merchantRepository;
+    private readonly ITenantProvider _tenantProvider = tenantProvider;
+
+    public async Task<PagedResult<MerchantAuditLogDto>> Handle(GetMerchantAuditLogsQuery request, CancellationToken cancellationToken)
+    {
+        var tenantId = _tenantProvider.GetCurrentTenantId();
+        var logs = await _merchantRepository.GetAuditLogsAsync(request.MerchantId, tenantId, cancellationToken);
+        var total = logs.Count;
+        var paged = logs
+            .Skip((request.Page - 1) * request.PageSize)
+            .Take(request.PageSize)
+            .Select(MerchantMapping.ToDto)
+            .ToList();
+
+        return new PagedResult<MerchantAuditLogDto>(paged, request.Page, request.PageSize, total);
+    }
+}