<?php

namespace KupShop\GTMBundle\Utils;

use Decimal;
use KupShop\KupShopBundle\Context\CurrencyContext;
use KupShop\KupShopBundle\Util\Price\Price;
use KupShop\KupShopBundle\Util\Price\TotalPrice;
use KupShop\KupShopBundle\Wrapper\PriceWrapper;

class PriceComputer
{
    /**
     * @var CurrencyContext
     */
    protected $currencyContext;

    public function __construct(CurrencyContext $currencyContext)
    {
        $this->currencyContext = $currencyContext;
    }

    /**
     * @param TotalPrice|Price|array|\Decimal $price
     *
     * @return string
     */
    public function getPrice($price, $withVat = null, $round = true)
    {
        if ($withVat !== null) {
            $sendWithVat = $withVat;
        } else {
            $sendWithVat = !self::sendPriceWithoutVAT();
        }

        if ($price instanceof TotalPrice) {
            // Je to trochu uchylny to vytahovat do Decimal, pak z toho delat pole, pak zas objekt Price..
            // ale je to kvuli prevodu do meny - zbytek tehle funkce
            $price = $sendWithVat ? $price->getPriceWithVat() : $price->getPriceWithoutVat($round);
        }

        if ($price instanceof \Decimal) {
            $price = [
                'value_without_vat' => $price,
                'value_with_vat' => $price,
                'vat' => 0,
            ];
        }

        if (!is_object($price)) {
            $price = new Price(toDecimal($price['value_without_vat']), $this->currencyContext->getActive(), $price['vat']);
        }

        if ($price instanceof PriceWrapper) {
            $price = $price->getObject();
        }

        $price = $this->convertToCorrectPrice($price);

        return ($sendWithVat ? $price->getPriceWithVat() : $price->getPriceWithoutVat($round))->printFloatValue(-2);
    }

    /**
     * @return Price
     */
    public function convertToCorrectPrice($price)
    {
        return \KupShop\KupShopBundle\Util\Price\PriceCalculator::convert($price, $this->getOutputCurrency());
    }

    /**
     * @return \KupShop\I18nBundle\Entity\Currency
     */
    public function getOutputCurrency()
    {
        $dbcfg = \Settings::getDefault();

        if (empty($dbcfg->analytics['google_tag_manager']['currency'])) {
            return $this->currencyContext->getActive();
        }

        return $this->currencyContext->getAll()[$dbcfg->analytics['google_tag_manager']['currency']];
    }

    public static function sendPriceWithoutVAT()
    {
        $dbcfg = \Settings::getDefault();

        return ($dbcfg['analytics']['google_tag_manager']['withoutVAT'] ?? 'N') == 'Y';
    }
}