<?php

namespace App\InvoiceRule;

use Doctrine\ORM\EntityManagerInterface;

use App\InvoiceRuleInterface;

use App\Entity\ServiceOffering;

class JumpstartWarranty implements InvoiceRuleInterface
{
    protected $em;

    public function __construct(EntityManagerInterface $em)
    {
        $this->em = $em;
    }

    public function getID()
    {   
        return 'jumpstart_warranty';
    }

    public function compute($criteria, &$total)
    {
        $stype = $criteria->getServiceType();

        $items = [];

        if ($stype == $this->getID())
        {
            $fee = $this->getServiceTypeFee();

            // add the service fee to items
            $qty = 1;
            $items[] = [
                'service_type' => $this->getID(),
                'qty' => $qty,
                'title' => $this->getServiceTitle(),
                'price' => $fee,
            ];

            $qty_price = bcmul($fee, $qty, 2);
            $total['total_price'] = bcadd($total['total_price'], $qty_price, 2);
        }

        return $items;
    }

    public function getServiceTypeFee()
    {
        $code = 'jumpstart_warranty_fee';

        // find the service fee using the code
        // if we can't find the fee, return 0
        $fee = $this->em->getRepository(ServiceOffering::class)->findOneBy(['code' => $code]);

        if ($fee == null)
            return 0;

        return $fee->getFee();
    }

    public function validatePromo($criteria, $promo_id)
    {   
        return false;
    }

    public function validateInvoiceItems($criteria, $invoice_items)
    {
        return null;
    }

    protected function getServiceTitle()
    {
        $title = 'Service - Troubleshooting fee';

        return $title;
    }
}