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

namespace Indotalent.Features.Payroll.Deduction.Cqrs;

public class UpdateDeductionRequest
{
    public string? Id { get; set; }
    public string? Code { get; set; }
    public string? Name { get; set; }
    public string? Description { get; set; }
    public string? Category { get; set; }
    public bool PreTax { get; set; }
    public string? CalculationMethod { 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 UpdateDeductionResponse
{
    public string? Id { get; set; }
    public bool Success { get; set; }
}

public record UpdateDeductionCommand(UpdateDeductionRequest Data) : IRequest<UpdateDeductionResponse>;

public class UpdateDeductionHandler : IRequestHandler<UpdateDeductionCommand, UpdateDeductionResponse>
{
    private readonly AppDbContext _context;

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

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

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

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

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

        entity.Code = request.Data.Code;
        entity.Name = request.Data.Name;
        entity.Description = request.Data.Description;
        entity.Category = request.Data.Category;
        entity.PreTax = request.Data.PreTax;
        entity.CalculationMethod = request.Data.CalculationMethod;
        entity.Status = request.Data.Status;

        await _context.SaveChangesAsync(cancellationToken);

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