77 lines
3.1 KiB
C#
77 lines
3.1 KiB
C#
using MediatR;
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using TakeoutSaaS.Application.App.Tenants.Commands;
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using TakeoutSaaS.Application.App.Tenants.Dto;
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using TakeoutSaaS.Domain.Tenants.Entities;
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using TakeoutSaaS.Domain.Tenants.Enums;
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using TakeoutSaaS.Domain.Tenants.Repositories;
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using TakeoutSaaS.Shared.Abstractions.Constants;
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using TakeoutSaaS.Shared.Abstractions.Exceptions;
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using TakeoutSaaS.Shared.Abstractions.Ids;
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namespace TakeoutSaaS.Application.App.Tenants.Handlers;
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/// <summary>
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/// 套餐升降配处理器。
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/// </summary>
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public sealed class ChangeTenantSubscriptionPlanCommandHandler(
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ITenantRepository tenantRepository,
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IIdGenerator idGenerator)
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: IRequestHandler<ChangeTenantSubscriptionPlanCommand, TenantSubscriptionDto>
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{
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/// <inheritdoc />
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public async Task<TenantSubscriptionDto> Handle(ChangeTenantSubscriptionPlanCommand request, CancellationToken cancellationToken)
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{
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// 1. 校验租户与订阅存在性
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_ = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
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?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
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var subscription = await tenantRepository.FindSubscriptionByIdAsync(request.TenantId, request.TenantSubscriptionId, cancellationToken)
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?? throw new BusinessException(ErrorCodes.NotFound, "订阅不存在");
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var previousPackage = subscription.TenantPackageId;
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// 2. 根据立即生效或排期设置目标套餐
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if (request.Immediate)
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{
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subscription.TenantPackageId = request.TargetPackageId;
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subscription.ScheduledPackageId = null;
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}
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else
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{
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subscription.ScheduledPackageId = request.TargetPackageId;
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}
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// 3. 更新订阅并记录变更历史
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await tenantRepository.UpdateSubscriptionAsync(subscription, cancellationToken);
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await tenantRepository.AddSubscriptionHistoryAsync(new TenantSubscriptionHistory
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{
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Id = idGenerator.NextId(),
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TenantId = subscription.TenantId,
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TenantSubscriptionId = subscription.Id,
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FromPackageId = previousPackage,
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ToPackageId = request.TargetPackageId,
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ChangeType = SubscriptionChangeType.Upgrade,
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EffectiveFrom = subscription.EffectiveFrom,
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EffectiveTo = subscription.EffectiveTo,
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Notes = request.Notes
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}, cancellationToken);
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// 4. 记录审计日志
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await tenantRepository.AddAuditLogAsync(new TenantAuditLog
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{
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TenantId = subscription.TenantId,
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Action = TenantAuditAction.SubscriptionPlanChanged,
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Title = request.Immediate ? "套餐立即变更" : "套餐排期变更",
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Description = request.Notes,
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PreviousStatus = null,
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CurrentStatus = null
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}, cancellationToken);
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// 5. 保存并返回 DTO
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await tenantRepository.SaveChangesAsync(cancellationToken);
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return subscription.ToSubscriptionDto()
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?? throw new BusinessException(ErrorCodes.InternalServerError, "订阅更新失败");
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}
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}
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