<?php

namespace App\Models;

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

class SupplierInvoice extends Model
{
    use HasFactory;

    protected $fillable = ['invoice_number', 'supplier_id', 'purchase_order_id', 'goods_receipt_note_id', 'invoice_date', 'due_date', 'subtotal', 'vat_amount', 'total_amount', 'paid_amount', 'status', 'notes'];

    protected $casts = [
        'invoice_date' => 'date',
        'due_date' => 'date',
        'subtotal' => 'decimal:2',
        'vat_amount' => 'decimal:2',
        'total_amount' => 'decimal:2',
        'paid_amount' => 'decimal:2',
    ];

    public function supplier()
    {
        return $this->belongsTo(Supplier::class);
    }

    public function purchaseOrder()
    {
        return $this->belongsTo(PurchaseOrder::class);
    }

    public function goodsReceiptNote()
    {
        return $this->belongsTo(GoodsReceiptNote::class);
    }

    public function payments()
    {
        return $this->hasMany(SupplierPayment::class);
    }

    public function getOutstandingAttribute()
    {
        return $this->total_amount - $this->paid_amount;
    }
}