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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

declare(strict_types=1);

namespace Magento\Paypal\Block\PayLater;

use Magento\Framework\View\Element\Template;
use Magento\Paypal\Model\PayLaterConfig;
use Magento\Paypal\Model\SdkUrl;
use Magento\Paypal\Model\Config as PaypalConfig;
use Magento\Framework\App\ObjectManager;

/**
 * PayPal PayLater component block
 * @api
 */
class Banner extends Template
{
    /**
     * @var PayLaterConfig
     */
    private $payLaterConfig;

    /**
     * @var SdkUrl
     */
    private $sdkUrl;

    /**
     * @var string
     */
    private $placement = '';

    /**
     * @var string
     */
    private $position = '';

    /**
     * @var PaypalConfig
     */
    private $paypalConfig;

    /**
     * @param Template\Context $context
     * @param PayLaterConfig $payLaterConfig
     * @param SdkUrl $sdkUrl
     * @param array $data
     * @param PaypalConfig $paypalConfig
     */
    public function __construct(
        Template\Context $context,
        PayLaterConfig $payLaterConfig,
        SdkUrl $sdkUrl,
        array $data = [],
        PaypalConfig $paypalConfig = null
    ) {
        parent::__construct($context, $data);
        $this->payLaterConfig = $payLaterConfig;
        $this->sdkUrl = $sdkUrl;
        $this->placement = $data['placement'] ??  '';
        $this->position = $data['position'] ??  '';
        $this->paypalConfig = $paypalConfig ?: ObjectManager::getInstance()
            ->get(PaypalConfig::class);
    }

    /**
     * Disable block output
     *
     * @return string
     */
    protected function _toHtml(): string
    {
        if (!$this->isEnabled()) {
            return '';
        }
        return parent::_toHtml();
    }

    /**
     * @inheritdoc
     */
    public function getJsLayout()
    {
        $jsComponent = $this->jsLayout['components']['payLater']['component']
            ?? 'Magento_Paypal/js/view/paylater';

        //Extend block component config with defaults
        $componentConfig = $this->jsLayout['components']['payLater']['config'] ?? [];
        $defaultConfig = ['sdkUrl' => $this->getPayPalSdkUrl()];
        $config = array_replace($defaultConfig, $componentConfig);
        $displayAmount = $config['displayAmount'] ?? false;
        $config['displayAmount'] = !$displayAmount || $this->payLaterConfig->isPPBillingAgreementEnabled()
            ? false : true;
        $config['dataAttributes'] = [
            'data-partner-attribution-id' => $this->paypalConfig->getBuildNotationCode()
        ];

        //Extend block component attributes with defaults
        $componentAttributes = $this->jsLayout['components']['payLater']['config']['attributes'] ?? [];
        $config['attributes'] = array_replace($this->getStyleAttributesConfig(), $componentAttributes);
        $config['attributes']['data-pp-placement'] = $this->placement;

        $this->jsLayout = [
            'components' => [
                'payLater' => [
                    'component' => $jsComponent,
                    'config' => $config
                ]
            ]
        ];

        return parent::getJsLayout();
    }

    /**
     * Build\Get URL to PP SDK
     *
     * @return string
     */
    private function getPayPalSdkUrl(): string
    {
        return $this->sdkUrl->getUrl();
    }

    /**
     * Retrieve style configuration
     *
     * @return string[]
     */
    private function getStyleAttributesConfig(): array
    {
        return $this->payLaterConfig->getSectionConfig($this->placement, PayLaterConfig::CONFIG_KEY_STYLE);
    }

    /**
     * Check if block should be displayed
     *
     * @return bool
     */
    private function isEnabled(): bool
    {
        $enabled = $this->payLaterConfig->isEnabled($this->placement);
        return $enabled &&
            $this->payLaterConfig->getSectionConfig($this->placement, PayLaterConfig::CONFIG_KEY_POSITION) ===
                $this->position;
    }
}