blazor-scm/Features/Utilities/Todo/Cqrs/UpdateTodoHandler.cs

using Indotalent.Infrastructure.Database;
using MediatR;
using Microsoft.EntityFrameworkCore;

namespace Indotalent.Features.Utilities.Todo.Cqrs;

public class UpdateTodoRequest
{
    public string? Id { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
    public DateTime? StartTime { get; set; }
    public DateTime? EndTime { get; set; }
    public bool IsCompleted { get; set; }
    public DateTimeOffset? CreatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public DateTimeOffset? UpdatedAt { get; set; }
    public string? UpdatedBy { get; set; }
}

public class UpdateTodoResponse
{
    public string? Id { get; set; }
    public bool Success { get; set; }
}

public record UpdateTodoCommand(UpdateTodoRequest Data) : IRequest<UpdateTodoResponse>;

public class UpdateTodoHandler : IRequestHandler<UpdateTodoCommand, UpdateTodoResponse>
{
    private readonly AppDbContext _context;

    public UpdateTodoHandler(AppDbContext context) => _context = context;

    public async Task<UpdateTodoResponse> Handle(UpdateTodoCommand request, CancellationToken cancellationToken)
    {
        var entity = await _context.Todo
            .FirstOrDefaultAsync(x => x.Id == request.Data.Id, cancellationToken);

        if (entity == null)
        {
            return new UpdateTodoResponse { Id = request.Data.Id, Success = false };
        }

        entity.Name = request.Data.Name;
        entity.Description = request.Data.Description;
        entity.StartTime = request.Data.StartTime;
        entity.EndTime = request.Data.EndTime;
        entity.IsCompleted = request.Data.IsCompleted;

        await _context.SaveChangesAsync(cancellationToken);

        return new UpdateTodoResponse
        {
            Id = entity.Id,
            Success = true
        };
    }
}