Initial code commit.

Sufi.Demo.PeopleDirectory.Application/Features/Contacts/Commands/DeleteContactCommand.cs

@@ -0,0 +1,53 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.Extensions.Logging;
+using Sufi.Demo.PeopleDirectory.Application.Contracts.Repositories;
+using Sufi.Demo.PeopleDirectory.Application.Contracts.Services;
+using Sufi.Demo.PeopleDirectory.Domain.Entities.Misc;
+using Sufi.Demo.PeopleDirectory.Shared.Wrapper;
+
+namespace Sufi.Demo.PeopleDirectory.Application.Features.Contacts.Commands
+{
+	public class DeleteContactCommand : IRequest<IResult>
+	{
+		public int Id { get; set; }
+	}
+
+	public sealed class DeleteContactCommandValidator : AbstractValidator<DeleteContactCommand>
+	{
+		public DeleteContactCommandValidator()
+		{
+			RuleFor(v => v.Id)
+				.GreaterThan(0)
+				.WithMessage("A valid Id is required.");
+		}
+	}
+
+	public class DeleteContactCommandHandler(
+			IUnitOfWork<int> unitOfWork,
+			ILogger<DeleteContactCommandHandler> logger,
+			IAppCache appCache
+			) : IRequestHandler<DeleteContactCommand, IResult>
+	{
+		public async Task<IResult> Handle(DeleteContactCommand request, CancellationToken cancellationToken)
+		{
+			var itemToDelete = await unitOfWork.Repository<Contact>().GetByIdAsync(request.Id);
+			if (itemToDelete != null)
+			{
+				await unitOfWork.Repository<Contact>().DeleteByIdAsync(request.Id);
+
+				// Clear cache entries related to contacts.
+				await appCache.RemoveAsync($"contact_{request.Id}");
+				await appCache.RemoveAsync("contact_all");
+
+				logger.LogInformation("Contact with ID: {Id} deleted.", request.Id);
+
+				return Result.Success();
+			}
+
+			logger.LogWarning("No contact found with ID: {Id}", request.Id);
+
+			return Result.Fail("No data to delete.");
+		}
+	}
+}