<?php

namespace rednaoeasycalculationforms\core\Managers\FormManager\Calculator;

use Exception;
use rednaoeasycalculationforms\core\Managers\FormManager\Fields\FBMultipleOptionsField;
use rednaoeasycalculationforms\core\Managers\FormManager\Utilities\NumericUtilities;

class PricePerItemCalculator extends CalculatorBase
{

    private $CustomSalePrice;
    private $CustomRegularPrice;

    public function __construct($field)
    {
        parent::__construct($field);
        $this->CustomRegularPrice = null;
        $this->CustomSalePrice = null;
    }

    public function SetRegularPrice($price)
    {
        $this->CustomRegularPrice = $price;
        return $this;
    }

    public function SetSalePrice($price) {
        $this->CustomSalePrice = $price;
        return $this;
    }

    public function ExecutedCalculation($value)
    {
        if($value == null)
            $value = $this->Field->GetValue();

        $numberOfItems = \count($value);

        $regularPriceToUse = $this->CustomRegularPrice != null ? $this->CustomRegularPrice : $this->Field->GetRegularPrice();

        $priceItem = 0;
        $saleItem = 0;
        $regularPriceItem = 0;

        if($regularPriceToUse != '')
        {
            $regularPriceItem = \floatval($regularPriceToUse);
            $priceItem = $regularPriceItem;
            $regularPriceToUse *= $numberOfItems;
        }

        foreach($value as $currentItem)
        {
            if(!isset($currentItem->total))
            {
                throw new Exception('Total of item was not defined');
            }

            if($currentItem->total->Quantity != 0)
                throw new Exception('Quantity of item does not match');

            if($currentItem->total->RegularPrice != $regularPriceItem)
                throw new Exception('Regular price of item does not match');

            if($currentItem->total->SalePrice != $saleItem)
                throw new Exception('Sale price of item does not match');

            if($currentItem->total->Price != $priceItem)
                throw new Exception('Price of item does not match');
        }

        if((\is_array($value) && count($value) > 0) || (!\is_array($value) && \strlen($value) > 0))
        {
            return $this->CreateCalculationObject($regularPriceToUse, '', 0);
        }else
            return $this->CreateCalculationObject('', '', 0);
    }

}