feat: add MediatR handlers for template and channel CRUD

- ServiceResult<T>, ServiceError, ServiceErrorCode, Unit, ServiceResultHelper in Services/Core - RequestHandler<TRequest, TResponse> base class (MediatR-adapted, DoOnHandle pattern) - EmailTemplate handlers: Create, Update, Delete, Get, GetByService - EmailChannel handlers: Create, Update, Delete, Get, GetByService Ref: IT-628 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-05-02 01:07:13 +03:00
parent 73b506992c
commit a03d2269a6
26 changed files with 565 additions and 0 deletions
@@ -0,0 +1,43 @@
+using HrynCo.NotificationService.DAL.Abstract;
+using HrynCo.NotificationService.DAL.Abstract.Repositories;
+using HrynCo.NotificationService.Services.Core;
+using HrynCo.NotificationService.Services.Logging;
+using static HrynCo.NotificationService.Services.Core.ServiceResultHelper;
+
+namespace HrynCo.NotificationService.Services.EmailChannels.Update;
+
+internal sealed class UpdateEmailChannelHandler
+    : RequestHandler<UpdateEmailChannelCommand, ServiceResult<Unit>>
+{
+    private readonly IEmailChannelRepository _channels;
+
+    public UpdateEmailChannelHandler(
+        IContextualSerilogLogger<UpdateEmailChannelCommand> logger,
+        IUnitOfWork unitOfWork,
+        IEmailChannelRepository channels)
+        : base(logger, unitOfWork)
+    {
+        _channels = channels;
+    }
+
+    protected override async Task<ServiceResult<Unit>> DoOnHandle(
+        UpdateEmailChannelCommand request, CancellationToken cancellationToken)
+    {
+        var channel = await _channels.GetByIdAsync(request.Id, cancellationToken);
+
+        if (channel is null)
+            return Failure<Unit>("Email channel not found.", ServiceErrorCode.NotFound);
+
+        channel.Priority = request.Priority;
+        channel.Settings = request.Settings;
+        channel.DailyLimit = request.DailyLimit;
+        channel.MonthlyLimit = request.MonthlyLimit;
+        channel.WarnThresholdPercent = request.WarnThresholdPercent;
+        channel.IsActive = request.IsActive;
+        channel.Updated = DateTimeOffset.UtcNow;
+
+        await _channels.UpdateAsync(channel, cancellationToken);
+
+        return Success(Unit.Value);
+    }
+}