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AMREZ.EOP.Application/UseCases/Tenancy/ListTenantsUseCase.cs

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+using System.Data;
+using AMREZ.EOP.Abstractions.Applications.Tenancy;
+using AMREZ.EOP.Abstractions.Applications.UseCases.Tenancy;
+using AMREZ.EOP.Abstractions.Infrastructures.Common;
+using AMREZ.EOP.Abstractions.Infrastructures.Repositories;
+using AMREZ.EOP.Contracts.DTOs.Tenancy.ListTenants;
+using Microsoft.AspNetCore.Http;
+
+namespace AMREZ.EOP.Application.UseCases.Tenancy;
+
+public sealed class ListTenantsUseCase : IListTenantsUseCase
+{
+    private readonly ITenantResolver _resolver;
+    private readonly IHttpContextAccessor _http;
+    private readonly IUnitOfWork _uow;
+    private readonly ITenantRepository _repo;
+
+    public ListTenantsUseCase(ITenantResolver resolver, IHttpContextAccessor http, IUnitOfWork uow, ITenantRepository repo)
+    { _resolver = resolver; _http = http; _uow = uow; _repo = repo; }
+
+    public async Task<ListTenantsResponse?> ExecuteAsync(ListTenantsRequest request, CancellationToken ct = default)
+    {
+        var http = _http.HttpContext ?? throw new InvalidOperationException("No HttpContext");
+        var ctx = _resolver.Resolve(http, hint: null);
+        if (ctx is null) return null;
+
+        await _uow.BeginAsync(ctx, IsolationLevel.ReadCommitted, ct);
+        try
+        {
+            var items = (await _repo.ListTenantsAsync(ct))
+                .Select(x => new TenantDto(x.TenantKey, x.Schema, x.ConnectionString, x.Mode, x.IsActive, x.UpdatedAtUtc))
+                .ToList();
+
+            await _uow.CommitAsync(ct);
+            return new ListTenantsResponse(items);
+        }
+        catch
+        {
+            await _uow.RollbackAsync(ct);
+            throw;
+        }
+    }
+}