blazor-hrm/Features/Payroll/Grade/Cqrs/UpdateGradeHandler.cs

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

namespace Indotalent.Features.Payroll.Grade.Cqrs;

public class UpdateGradeRequest
{
    public string? Id { get; set; }
    public string? Code { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
    public decimal SalaryFrom { get; set; }
    public decimal SalaryTo { get; set; }
    public bool IsOverTimeEligible { get; set; }
    public string? Status { get; set; }
    public DateTimeOffset? CreatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public DateTimeOffset? UpdatedAt { get; set; }
    public string? UpdatedBy { get; set; }
}

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

public record UpdateGradeCommand(UpdateGradeRequest Data) : IRequest<UpdateGradeResponse>;

public class UpdateGradeHandler : IRequestHandler<UpdateGradeCommand, UpdateGradeResponse>
{
    private readonly AppDbContext _context;

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

    public async Task<UpdateGradeResponse> Handle(UpdateGradeCommand request, CancellationToken cancellationToken)
    {
        var isExists = await _context.Grade
            .AnyAsync(x => x.Code == request.Data.Code && x.Id != request.Data.Id, cancellationToken);

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

        var entity = await _context.Grade
            .FirstOrDefaultAsync(x => x.Id == request.Data.Id, cancellationToken);

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

        entity.Code = request.Data.Code;
        entity.Name = request.Data.Name;
        entity.Description = request.Data.Description;
        entity.SalaryFrom = request.Data.SalaryFrom;
        entity.SalaryTo = request.Data.SalaryTo;
        entity.IsOverTimeEligible = request.Data.IsOverTimeEligible;
        entity.Status = request.Data.Status;

        await _context.SaveChangesAsync(cancellationToken);

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