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

namespace Indotalent.Features.Payroll.PayrollDetails.Cqrs;

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

public class GetPayrollDetailByIdResponse
{
    public string? Id { get; set; }
    public string? PayrollProcessId { get; set; }
    public string? EmployeeId { get; set; }
    public string? EmployeeCode { get; set; }
    public string? EmployeeName { get; set; }
    public decimal BasicSalary { get; set; }
    public decimal TotalIncome { get; set; }
    public decimal TotalDeduction { get; set; }
    public decimal TakeHomePay { get; set; }
    public List<PayrollDetailComponentResponse> Components { get; set; } = new();
}

public class PayrollDetailComponentResponse
{
    public string? ComponentName { get; set; }
    public string? ComponentType { get; set; }
    public decimal Amount { get; set; }
    public string? Description { get; set; }
}

public record GetPayrollDetailByIdQuery(GetPayrollDetailByIdRequest Data) : IRequest<GetPayrollDetailByIdResponse>;

public class GetPayrollDetailByIdHandler : IRequestHandler<GetPayrollDetailByIdQuery, GetPayrollDetailByIdResponse>
{
    private readonly AppDbContext _context;

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

    public async Task<GetPayrollDetailByIdResponse> Handle(GetPayrollDetailByIdQuery request, CancellationToken cancellationToken)
    {
        var entity = await _context.PayrollDetail
            .Include(x => x.Components)
            .FirstOrDefaultAsync(x => x.Id == request.Data.Id, cancellationToken);

        if (entity == null)
        {
            throw new NotFoundException("Payroll Detail", request.Data.Id ?? string.Empty);
        }

        var response = new GetPayrollDetailByIdResponse
        {
            Id = entity.Id,
            PayrollProcessId = entity.PayrollProcessId,
            EmployeeId = entity.EmployeeId,
            EmployeeCode = entity.EmployeeCode,
            EmployeeName = entity.EmployeeName,
            BasicSalary = entity.BasicSalary,
            TotalIncome = entity.TotalIncome,
            TotalDeduction = entity.TotalDeduction,
            TakeHomePay = entity.TakeHomePay,
            Components = entity.Components.Select(c => new PayrollDetailComponentResponse
            {
                ComponentName = c.ComponentName,
                ComponentType = c.ComponentType,
                Amount = c.Amount,
                Description = c.Description
            }).ToList()
        };

        return response;
    }
}