feat(finance): 完成发票管理模块后端实现

src/Domain/TakeoutSaaS.Domain/Tenants/Repositories/ITenantInvoiceRepository.cs

@@ -0,0 +1,104 @@
+using TakeoutSaaS.Domain.Tenants.Entities;
+using TakeoutSaaS.Domain.Tenants.Enums;
+
+namespace TakeoutSaaS.Domain.Tenants.Repositories;
+
+/// <summary>
+/// 租户发票仓储契约。
+/// </summary>
+public interface ITenantInvoiceRepository
+{
+    /// <summary>
+    /// 查询租户发票设置。
+    /// </summary>
+    Task<TenantInvoiceSetting?> GetSettingAsync(long tenantId, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增发票设置。
+    /// </summary>
+    Task AddSettingAsync(TenantInvoiceSetting entity, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 更新发票设置。
+    /// </summary>
+    Task UpdateSettingAsync(TenantInvoiceSetting entity, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 分页查询发票记录。
+    /// </summary>
+    Task<(IReadOnlyList<TenantInvoiceRecord> Items, int TotalCount)> SearchRecordsAsync(
+        long tenantId,
+        DateTime? startUtc,
+        DateTime? endUtc,
+        TenantInvoiceStatus? status,
+        TenantInvoiceType? invoiceType,
+        string? keyword,
+        int page,
+        int pageSize,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 获取发票页统计。
+    /// </summary>
+    Task<TenantInvoiceRecordStatsSnapshot> GetStatsAsync(
+        long tenantId,
+        DateTime nowUtc,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 根据标识查询发票记录。
+    /// </summary>
+    Task<TenantInvoiceRecord?> FindRecordByIdAsync(
+        long tenantId,
+        long recordId,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 判断租户下发票号码是否已存在。
+    /// </summary>
+    Task<bool> ExistsInvoiceNoAsync(
+        long tenantId,
+        string invoiceNo,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 新增发票记录。
+    /// </summary>
+    Task AddRecordAsync(TenantInvoiceRecord entity, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 更新发票记录。
+    /// </summary>
+    Task UpdateRecordAsync(TenantInvoiceRecord entity, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// 持久化变更。
+    /// </summary>
+    Task SaveChangesAsync(CancellationToken cancellationToken = default);
+}
+
+/// <summary>
+/// 发票页面统计快照。
+/// </summary>
+public sealed record TenantInvoiceRecordStatsSnapshot
+{
+    /// <summary>
+    /// 本月已开票金额。
+    /// </summary>
+    public decimal CurrentMonthIssuedAmount { get; init; }
+
+    /// <summary>
+    /// 本月已开票张数。
+    /// </summary>
+    public int CurrentMonthIssuedCount { get; init; }
+
+    /// <summary>
+    /// 待开票张数。
+    /// </summary>
+    public int PendingCount { get; init; }
+
+    /// <summary>
+    /// 已作废张数。
+    /// </summary>
+    public int VoidedCount { get; init; }
+}