<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class InvoiceItem extends Model
{
	protected $table = 'ab_invoice_item';
	protected $with = ['taxes'];

	private $_tax = 0;

	public function invoice()
	{
		return $this->belongsTo(Invoice::class);
	}

	public function taxes()
	{
		return $this->hasMany(InvoiceItemTax::class);
	}

	public function getSubTotalAttribute()
	{
		return $this->quantity * $this->price_base;
	}

	public function getTaxAttribute()
	{
		if (! $this->_tax)
		{
			foreach ($this->taxes as $o)
			{
				$this->_tax += $o->amount;
			}
		}

		return $this->_tax;
	}

	public function getTotalAttribute()
	{
		return $this->tax + $this->sub_total;
	}
}