<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Factories\HasFactory;

class Billing extends Model
{
    use HasFactory;

    protected $table = 'billing';
    protected $primaryKey = 'IdBilling';

    protected $fillable = [
        'IdRegistrasi',
        'TanggalBilling',
        'TotalBiaya',
        'Dibayar',
        'Sisa',
        'StatusPembayaran',
        'Keterangan'
    ];

    public function registrasi()
    {
        return $this->belongsTo(TrRegistrasi::class, 'IdRegistrasi', 'IdRegistrasi');
    }

    // Mendapatkan detail transaksi untuk billing ini
    public function getTransaksiDetails()
    {
        return $this->registrasi->transaksi;
    }

    // Menghitung total biaya dari semua transaksi
    public function calculateTotalBiaya()
    {
        $total = 0;
        foreach ($this->getTransaksiDetails() as $transaksi) {
            $total += $transaksi->tindakan->TarifTindakan * $transaksi->JmlTindakan;
        }
        return $total;
    }

    // Mengupdate sisa pembayaran
    public function updateSisa()
    {
        $this->Sisa = $this->TotalBiaya - $this->Dibayar;
        $this->StatusPembayaran = ($this->Sisa <= 0) ? 'Lunas' : 'Belum Lunas';
        $this->save();
    }
}