blazor-saas-hrm/Features/Organization/Designation/Cqrs/UpdateDesignationHandler.cs

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

namespace Indotalent.Features.Organization.Designation.Cqrs;

public class UpdateDesignationRequest : CreateDesignationRequest
{
    public string? Id { get; set; }
    public DateTimeOffset? CreatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public DateTimeOffset? UpdatedAt { get; set; }
    public string? UpdatedBy { get; set; }
}

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

public record UpdateDesignationCommand(UpdateDesignationRequest Data) : IRequest<UpdateDesignationResponse>;

public class UpdateDesignationHandler : IRequestHandler<UpdateDesignationCommand, UpdateDesignationResponse>
{
    private readonly AppDbContext _context;

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

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

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

        var isExists = await _context.Designation
            .AnyAsync(x => x.Code == request.Data.Code && x.Id != request.Data.Id, cancellationToken);

        if (isExists)
        {
            throw new AlreadyExistsException("Designation", request.Data.Code ?? string.Empty);
        }

        entity.Code = request.Data.Code;
        entity.Name = request.Data.Name;
        entity.Description = request.Data.Description;
        entity.Level = request.Data.Level;
        entity.OtherInformation1 = request.Data.OtherInformation1;
        entity.OtherInformation2 = request.Data.OtherInformation2;
        entity.OtherInformation3 = request.Data.OtherInformation3;

        await _context.SaveChangesAsync(cancellationToken);

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