✨ feat: 完成账单管理模块后端功能开发及API优化
核心功能:
- 账单CRUD操作(创建、查询、详情、更新状态、删除)
- 支付记录管理(创建支付、审核支付)
- 批量操作支持(批量更新账单状态)
- 统计分析功能(账单统计、逾期账单查询)
- 导出功能(Excel/PDF/CSV)
API端点 (16个):
- GET /api/admin/v1/billings - 账单列表(分页、筛选、排序)
- POST /api/admin/v1/billings - 创建账单
- GET /api/admin/v1/billings/{id} - 账单详情
- DELETE /api/admin/v1/billings/{id} - 删除账单
- PUT /api/admin/v1/billings/{id}/status - 更新状态
- POST /api/admin/v1/billings/batch/status - 批量更新
- GET /api/admin/v1/billings/{id}/payments - 支付记录
- POST /api/admin/v1/billings/{id}/payments - 创建支付
- PUT /api/admin/v1/billings/payments/{paymentId}/verify - 审核支付
- GET /api/admin/v1/billings/statistics - 统计数据
- GET /api/admin/v1/billings/overdue - 逾期账单
- POST /api/admin/v1/billings/export - 导出账单
架构优化:
- 采用CQRS模式分离读写(MediatR + Dapper + EF Core)
- 完整的领域模型设计(TenantBillingStatement, TenantPayment等)
- FluentValidation请求验证
- 状态机管理账单和支付状态流转
API设计优化 (三项改进):
1. 导出API响应Content-Type改为application/octet-stream
2. 支付审核API添加Approved和Notes可选参数,支持通过/拒绝
3. 移除TenantBillings API中重复的TenantId参数
数据库变更:
- 新增账单相关表及关系
- 支持Snowflake ID主键
- 完整的审计字段支持
🤖 Generated with Claude Code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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using MediatR;
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using TakeoutSaaS.Application.App.Billings.Commands;
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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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namespace TakeoutSaaS.Application.App.Billings.Handlers;
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/// <summary>
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/// 取消账单命令处理器。
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/// </summary>
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public sealed class CancelBillingCommandHandler(
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ITenantBillingRepository billingRepository)
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: IRequestHandler<CancelBillingCommand, Unit>
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{
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/// <inheritdoc />
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public async Task<Unit> Handle(CancelBillingCommand request, CancellationToken cancellationToken)
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{
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// 1. 查询账单
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var billing = await billingRepository.FindByIdAsync(request.BillingId, cancellationToken);
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if (billing is null)
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{
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throw new BusinessException(ErrorCodes.NotFound, "账单不存在");
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}
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// 2. (空行后) 取消账单(领域规则校验在实体方法内)
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billing.Cancel(request.Reason);
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// 3. (空行后) 持久化
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await billingRepository.UpdateAsync(billing, cancellationToken);
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await billingRepository.SaveChangesAsync(cancellationToken);
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return Unit.Value;
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}
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}
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