WeeeConfigProvider.php

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<?php
namespace Magento\Weee\Model;

use Magento\Checkout\Model\ConfigProviderInterface;
use Magento\Store\Model\StoreManagerInterface;
use Magento\Weee\Helper\Data as WeeeHelper;
use Magento\Weee\Model\Tax as WeeeDisplayConfig;

class WeeeConfigProvider implements ConfigProviderInterface
{
    protected $weeeHelper;

    protected $storeManager;

    protected $weeeConfig;

    public function __construct(
        WeeeHelper $weeeHelper,
        StoreManagerInterface $storeManager,
        Config $weeeConfig
    ) {
        $this->weeeHelper = $weeeHelper;
        $this->storeManager = $storeManager;
        $this->weeeConfig = $weeeConfig;
    }

    public function getConfig()
    {
        return [
            'isDisplayPriceWithWeeeDetails' => $this->iDisplayPriceWithWeeeDetails(),
            'isDisplayFinalPrice' => $this->isDisplayFinalPrice(),
            'isWeeeEnabled' => $this->isWeeeEnabled(),
            'isIncludedInSubtotal' => $this->isIncludedInSubtotal(),
            'getIncludeWeeeFlag' => $this->getIncludeWeeeFlag()
        ];
    }

    private function getStoreId()
    {
        return $this->storeManager->getStore()->getId();
    }

    public function iDisplayPriceWithWeeeDetails()
    {
        if (!$this->weeeHelper->isEnabled($this->getStoreId())) {
            return false;
        }

        $displayWeeeDetails = $this->weeeHelper->typeOfDisplay(
            [WeeeDisplayConfig::DISPLAY_INCL_DESCR, WeeeDisplayConfig::DISPLAY_EXCL_DESCR_INCL],
            'cart',
            $this->storeManager->getStore()->getId()
        );
        if (!$displayWeeeDetails) {
            return false;
        }
        return true;
    }

    public function isDisplayFinalPrice()
    {
        $flag = $this->weeeHelper->typeOfDisplay(
            WeeeDisplayConfig::DISPLAY_EXCL_DESCR_INCL,
            'cart',
            $this->storeManager->getStore()->getId()
        );

        if (!$flag) {
            return false;
        }

        return true;
    }

    public function isWeeeEnabled()
    {
        return $this->weeeHelper->isEnabled($this->storeManager->getStore()->getId());
    }

    public function getIncludeWeeeFlag()
    {
        $includeWeee = $this->weeeHelper->typeOfDisplay(
            [WeeeDisplayConfig::DISPLAY_INCL_DESCR, WeeeDisplayConfig::DISPLAY_INCL],
            'cart',
            $this->getStoreId()
        );
        return $includeWeee;
    }

    public function isIncludedInSubtotal()
    {
        return $this->weeeConfig->isEnabled() && $this->weeeConfig->includeInSubtotal();
    }
}