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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Payment\Block\Form;

use Magento\Framework\App\ObjectManager;
use Magento\Payment\Model\Method\AbstractMethod;

/**
 * Base container block for payment methods forms
 *
 * @method \Magento\Quote\Model\Quote getQuote()
 *
 * @api
 * @since 100.0.2
 */
class Container extends \Magento\Framework\View\Element\Template
{
    /**
     * @var \Magento\Payment\Helper\Data
     */
    protected $_paymentHelper;

    /**
     * @var \Magento\Payment\Model\Checks\SpecificationFactory
     */
    protected $methodSpecificationFactory;

    /**
     * @var \Magento\Payment\Api\PaymentMethodListInterface
     */
    private $paymentMethodList;

    /**
     * @var \Magento\Payment\Model\Method\InstanceFactory
     */
    private $paymentMethodInstanceFactory;

    /**
     * @var array
     * @since 100.1.3
     */
    protected $additionalChecks;

    /**
     * @param \Magento\Framework\View\Element\Template\Context $context
     * @param \Magento\Payment\Helper\Data $paymentHelper
     * @param \Magento\Payment\Model\Checks\SpecificationFactory $methodSpecificationFactory
     * @param array $data
     * @param array $additionalChecks
     */
    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Payment\Helper\Data $paymentHelper,
        \Magento\Payment\Model\Checks\SpecificationFactory $methodSpecificationFactory,
        array $data = [],
        array $additionalChecks = []
    ) {
        $this->_paymentHelper = $paymentHelper;
        $this->methodSpecificationFactory = $methodSpecificationFactory;
        $this->additionalChecks = $additionalChecks;
        parent::__construct($context, $data);
    }

    /**
     * Prepare children blocks
     *
     * @return $this
     */
    protected function _prepareLayout()
    {
        /**
         * Create child blocks for payment methods forms
         */
        foreach ($this->getMethods() as $method) {
            $this->setChild(
                'payment.method.' . $method->getCode(),
                $this->_paymentHelper->getMethodFormBlock($method, $this->_layout)
            );
        }

        return parent::_prepareLayout();
    }

    /**
     * Check payment method model
     *
     * @param \Magento\Payment\Model\MethodInterface $method
     * @return bool
     */
    protected function _canUseMethod($method)
    {
        $checks = array_merge(
            [
                AbstractMethod::CHECK_USE_FOR_COUNTRY,
                AbstractMethod::CHECK_USE_FOR_CURRENCY,
                AbstractMethod::CHECK_ORDER_TOTAL_MIN_MAX,
                AbstractMethod::CHECK_ZERO_TOTAL
            ],
            $this->additionalChecks
        );

        return $this->methodSpecificationFactory->create($checks)->isApplicable(
            $method,
            $this->getQuote()
        );
    }

    /**
     * Check and prepare payment method model
     *
     * Redeclare this method in child classes for declaring method info instance
     *
     * @param \Magento\Payment\Model\MethodInterface $method
     * @return $this
     */
    protected function _assignMethod($method)
    {
        $method->setInfoInstance($this->getQuote()->getPayment());
        return $this;
    }

    /**
     * Declare template for payment method form block
     *
     * @param string $method
     * @param string $template
     * @return $this
     */
    public function setMethodFormTemplate($method = '', $template = '')
    {
        if (!empty($method) && !empty($template)) {
            if ($block = $this->getChildBlock('payment.method.' . $method)) {
                $block->setTemplate($template);
            }
        }
        return $this;
    }

    /**
     * Retrieve available payment methods
     *
     * @return array
     */
    public function getMethods()
    {
        $methods = $this->getData('methods');
        if ($methods === null) {
            $quote = $this->getQuote();
            $store = $quote ? $quote->getStoreId() : null;
            $methods = [];
            foreach ($this->getPaymentMethodList()->getActiveList($store) as $method) {
                $methodInstance = $this->getPaymentMethodInstanceFactory()->create($method);
                if ($methodInstance->isAvailable($quote) && $this->_canUseMethod($methodInstance)) {
                    $this->_assignMethod($methodInstance);
                    $methods[] = $methodInstance;
                }
            }
            $this->setData('methods', $methods);
        }
        return $methods;
    }

    /**
     * Retrieve code of current payment method
     *
     * @return string|false
     */
    public function getSelectedMethodCode()
    {
        $methods = $this->getMethods();
        if (!empty($methods)) {
            reset($methods);
            return current($methods)->getCode();
        }
        return false;
    }

    /**
     * Get payment method list.
     *
     * @return \Magento\Payment\Api\PaymentMethodListInterface
     * @deprecated 100.1.3
     */
    private function getPaymentMethodList()
    {
        if ($this->paymentMethodList === null) {
            $this->paymentMethodList = ObjectManager::getInstance()->get(
                \Magento\Payment\Api\PaymentMethodListInterface::class
            );
        }
        return $this->paymentMethodList;
    }

    /**
     * Get payment method instance factory.
     *
     * @return \Magento\Payment\Model\Method\InstanceFactory
     * @deprecated 100.1.3
     */
    private function getPaymentMethodInstanceFactory()
    {
        if ($this->paymentMethodInstanceFactory === null) {
            $this->paymentMethodInstanceFactory = ObjectManager::getInstance()->get(
                \Magento\Payment\Model\Method\InstanceFactory::class
            );
        }
        return $this->paymentMethodInstanceFactory;
    }
}