blazor-saas-hrm/Features/Organization/Employee/Cqrs/CreateEmployeeDeductionHandler.cs

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

namespace Indotalent.Features.Organization.Employee.Cqrs;

public class CreateEmployeeDeductionRequest
{
    public string? EmployeeId { get; set; }
    public string? DeductionId { get; set; }
    public decimal Amount { get; set; }
    public string? Description { get; set; }
    public bool IsActive { get; set; } = true;
}

public class CreateEmployeeDeductionResponse
{
    public string? Id { get; set; }
}

public record CreateEmployeeDeductionCommand(CreateEmployeeDeductionRequest Data) : IRequest<CreateEmployeeDeductionResponse>;

public class CreateEmployeeDeductionHandler : IRequestHandler<CreateEmployeeDeductionCommand, CreateEmployeeDeductionResponse>
{
    private readonly AppDbContext _context;
    public CreateEmployeeDeductionHandler(AppDbContext context) => _context = context;

    public async Task<CreateEmployeeDeductionResponse> Handle(CreateEmployeeDeductionCommand request, CancellationToken cancellationToken)
    {
        var entityName = nameof(Data.Entities.EmployeeDeduction);
        var autoNo = await _context.GenerateAutoNumberAsync(
            entityName: entityName,
            prefixTemplate: $"EDED/{{Year}}/",
            ct: cancellationToken
        );

        var entity = new Data.Entities.EmployeeDeduction
        {
            AutoNumber = autoNo,
            EmployeeId = request.Data.EmployeeId,
            DeductionId = request.Data.DeductionId,
            Amount = request.Data.Amount,
            Description = request.Data.Description,
            IsActive = request.Data.IsActive
        };

        _context.EmployeeDeduction.Add(entity);
        await _context.SaveChangesAsync(cancellationToken);

        return new CreateEmployeeDeductionResponse { Id = entity.Id };
    }
}