37 lines
1.4 KiB
C#
37 lines
1.4 KiB
C#
using System.Linq;
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using MediatR;
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using TakeoutSaaS.Application.App.Tenants.Dto;
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using TakeoutSaaS.Application.App.Tenants.Queries;
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using TakeoutSaaS.Domain.Tenants.Repositories;
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using TakeoutSaaS.Shared.Abstractions.Results;
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namespace TakeoutSaaS.Application.App.Tenants.Handlers;
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/// <summary>
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/// 通知分页查询处理器。
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/// </summary>
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public sealed class SearchTenantNotificationsQueryHandler(ITenantNotificationRepository notificationRepository)
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: IRequestHandler<SearchTenantNotificationsQuery, PagedResult<TenantNotificationDto>>
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{
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public async Task<PagedResult<TenantNotificationDto>> Handle(SearchTenantNotificationsQuery request, CancellationToken cancellationToken)
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{
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// 1. 查询通知
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var notifications = await notificationRepository.SearchAsync(
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request.TenantId,
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request.Severity,
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request.UnreadOnly,
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null,
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null,
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cancellationToken);
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// 2. 排序与分页
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var ordered = notifications.OrderByDescending(x => x.SentAt).ToList();
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var page = request.Page <= 0 ? 1 : request.Page;
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var size = request.PageSize <= 0 ? 20 : request.PageSize;
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var items = ordered.Skip((page - 1) * size).Take(size).Select(x => x.ToDto()).ToList();
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// 3. 返回分页结果
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return new PagedResult<TenantNotificationDto>(items, page, size, ordered.Count);
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}
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}
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