<?php
/**
 * The PayPal Card Button Gateway
 *
 * @package WooCommerce\PayPalCommerce\WcGateway\Gateway
 */

declare(strict_types=1);

namespace WooCommerce\PayPalCommerce\WcGateway\Gateway;

use Exception;
use Psr\Log\LoggerInterface;
use WC_Order;
use WooCommerce\PayPalCommerce\ApiClient\Exception\PayPalApiException;
use WooCommerce\PayPalCommerce\ApiClient\Exception\RuntimeException;
use WooCommerce\PayPalCommerce\Onboarding\Environment;
use WooCommerce\PayPalCommerce\Onboarding\State;
use WooCommerce\PayPalCommerce\Session\SessionHandler;
use WooCommerce\PayPalCommerce\Subscription\FreeTrialHandlerTrait;
use WooCommerce\PayPalCommerce\Subscription\Helper\SubscriptionHelper;
use WooCommerce\PayPalCommerce\Vaulting\PaymentTokenRepository;
use WooCommerce\PayPalCommerce\WcGateway\Exception\GatewayGenericException;
use WooCommerce\PayPalCommerce\WcGateway\Processor\OrderProcessor;
use WooCommerce\PayPalCommerce\WcGateway\Processor\RefundProcessor;
use Psr\Container\ContainerInterface;
use WooCommerce\PayPalCommerce\WcGateway\Settings\SettingsRenderer;

/**
 * Class CardButtonGateway
 */
class CardButtonGateway extends \WC_Payment_Gateway {

	use ProcessPaymentTrait, FreeTrialHandlerTrait, GatewaySettingsRendererTrait;

	const ID = 'ppcp-card-button-gateway';

	/**
	 * The Settings Renderer.
	 *
	 * @var SettingsRenderer
	 */
	protected $settings_renderer;

	/**
	 * The processor for orders.
	 *
	 * @var OrderProcessor
	 */
	protected $order_processor;

	/**
	 * The settings.
	 *
	 * @var ContainerInterface
	 */
	protected $config;

	/**
	 * The Session Handler.
	 *
	 * @var SessionHandler
	 */
	protected $session_handler;

	/**
	 * The Refund Processor.
	 *
	 * @var RefundProcessor
	 */
	private $refund_processor;

	/**
	 * The state.
	 *
	 * @var State
	 */
	protected $state;

	/**
	 * Service able to provide transaction url for an order.
	 *
	 * @var TransactionUrlProvider
	 */
	protected $transaction_url_provider;

	/**
	 * The subscription helper.
	 *
	 * @var SubscriptionHelper
	 */
	protected $subscription_helper;

	/**
	 * The payment token repository.
	 *
	 * @var PaymentTokenRepository
	 */
	protected $payment_token_repository;

	/**
	 * Whether the plugin is in onboarded state.
	 *
	 * @var bool
	 */
	private $onboarded;

	/**
	 * Whether the gateway should be enabled by default.
	 *
	 * @var bool
	 */
	private $default_enabled;

	/**
	 * The environment.
	 *
	 * @var Environment
	 */
	protected $environment;

	/**
	 * The logger.
	 *
	 * @var LoggerInterface
	 */
	private $logger;

	/**
	 * CardButtonGateway constructor.
	 *
	 * @param SettingsRenderer       $settings_renderer The Settings Renderer.
	 * @param OrderProcessor         $order_processor The Order Processor.
	 * @param ContainerInterface     $config The settings.
	 * @param SessionHandler         $session_handler The Session Handler.
	 * @param RefundProcessor        $refund_processor The Refund Processor.
	 * @param State                  $state The state.
	 * @param TransactionUrlProvider $transaction_url_provider Service providing transaction view URL based on order.
	 * @param SubscriptionHelper     $subscription_helper The subscription helper.
	 * @param bool                   $default_enabled Whether the gateway should be enabled by default.
	 * @param Environment            $environment The environment.
	 * @param PaymentTokenRepository $payment_token_repository The payment token repository.
	 * @param LoggerInterface        $logger  The logger.
	 */
	public function __construct(
		SettingsRenderer $settings_renderer,
		OrderProcessor $order_processor,
		ContainerInterface $config,
		SessionHandler $session_handler,
		RefundProcessor $refund_processor,
		State $state,
		TransactionUrlProvider $transaction_url_provider,
		SubscriptionHelper $subscription_helper,
		bool $default_enabled,
		Environment $environment,
		PaymentTokenRepository $payment_token_repository,
		LoggerInterface $logger
	) {
		$this->id                       = self::ID;
		$this->settings_renderer        = $settings_renderer;
		$this->order_processor          = $order_processor;
		$this->config                   = $config;
		$this->session_handler          = $session_handler;
		$this->refund_processor         = $refund_processor;
		$this->state                    = $state;
		$this->transaction_url_provider = $transaction_url_provider;
		$this->subscription_helper      = $subscription_helper;
		$this->default_enabled          = $default_enabled;
		$this->environment              = $environment;
		$this->onboarded                = $state->current_state() === State::STATE_ONBOARDED;
		$this->payment_token_repository = $payment_token_repository;
		$this->logger                   = $logger;

		if ( $this->onboarded ) {
			$this->supports = array( 'refunds' );
		}
		if (
			defined( 'PPCP_FLAG_SUBSCRIPTION' )
			&& PPCP_FLAG_SUBSCRIPTION
			&& $this->gateways_enabled()
			&& $this->vault_setting_enabled()
		) {
			$this->supports = array(
				'refunds',
				'products',
				'subscriptions',
				'subscription_cancellation',
				'subscription_suspension',
				'subscription_reactivation',
				'subscription_amount_changes',
				'subscription_date_changes',
				'subscription_payment_method_change',
				'subscription_payment_method_change_customer',
				'subscription_payment_method_change_admin',
				'multiple_subscriptions',
			);
		}

		$this->method_title       = __( 'PayPal Card Button', 'woocommerce-paypal-payments' );
		$this->method_description = __( 'The separate payment gateway with the card button. If disabled, the button is included in the PayPal gateway.', 'woocommerce-paypal-payments' );
		$this->title              = $this->get_option( 'title', __( 'Debit & Credit Cards', 'woocommerce-paypal-payments' ) );
		$this->description        = $this->get_option( 'description', '' );

		$this->init_form_fields();
		$this->init_settings();

		add_action(
			'woocommerce_update_options_payment_gateways_' . $this->id,
			array(
				$this,
				'process_admin_options',
			)
		);
	}

	/**
	 * Whether the Gateway needs to be setup.
	 *
	 * @return bool
	 */
	public function needs_setup(): bool {
		return ! $this->onboarded;
	}

	/**
	 * Initializes the form fields.
	 */
	public function init_form_fields() {
		$this->form_fields = array(
			'enabled'     => array(
				'title'       => __( 'Enable/Disable', 'woocommerce-paypal-payments' ),
				'type'        => 'checkbox',
				'label'       => __( 'Enable PayPal Card Button', 'woocommerce-paypal-payments' ),
				'default'     => $this->default_enabled ? 'yes' : 'no',
				'desc_tip'    => true,
				'description' => __( 'Enable/Disable the separate payment gateway with the card button.', 'woocommerce-paypal-payments' ),
			),
			'title'       => array(
				'title'       => __( 'Title', 'woocommerce-paypal-payments' ),
				'type'        => 'text',
				'default'     => $this->title,
				'desc_tip'    => true,
				'description' => __( 'This controls the title which the user sees during checkout.', 'woocommerce-paypal-payments' ),
			),
			'description' => array(
				'title'       => __( 'Description', 'woocommerce-paypal-payments' ),
				'type'        => 'text',
				'default'     => $this->description,
				'desc_tip'    => true,
				'description' => __( 'This controls the description which the user sees during checkout.', 'woocommerce-paypal-payments' ),
			),
			'ppcp'        => array(
				'type' => 'ppcp',
			),
		);
	}

	/**
	 * Process payment for a WooCommerce order.
	 *
	 * @param int $order_id The WooCommerce order id.
	 *
	 * @return array
	 */
	public function process_payment( $order_id ) {
		$wc_order = wc_get_order( $order_id );
		if ( ! is_a( $wc_order, WC_Order::class ) ) {
			return $this->handle_payment_failure(
				null,
				new GatewayGenericException( new Exception( 'WC order was not found.' ) )
			);
		}

		/**
		 * If customer has chosen change Subscription payment.
		 */
		if ( $this->subscription_helper->has_subscription( $order_id ) && $this->subscription_helper->is_subscription_change_payment() ) {
			$saved_paypal_payment = filter_input( INPUT_POST, 'saved_paypal_payment', FILTER_SANITIZE_STRING );
			if ( $saved_paypal_payment ) {
				update_post_meta( $order_id, 'payment_token_id', $saved_paypal_payment );

				return $this->handle_payment_success( $wc_order );
			}
		}

		/**
		 * If the WC_Order is paid through the approved webhook.
		 */
		//phpcs:disable WordPress.Security.NonceVerification.Recommended
		if ( isset( $_REQUEST['ppcp-resume-order'] ) && $wc_order->has_status( 'processing' ) ) {
			return $this->handle_payment_success( $wc_order );
		}
		//phpcs:enable WordPress.Security.NonceVerification.Recommended

		try {
			if ( ! $this->order_processor->process( $wc_order ) ) {
				return $this->handle_payment_failure(
					$wc_order,
					new Exception(
						$this->order_processor->last_error()
					)
				);
			}

			if ( $this->subscription_helper->has_subscription( $order_id ) ) {
				$this->schedule_saved_payment_check( $order_id, $wc_order->get_customer_id() );
			}

			return $this->handle_payment_success( $wc_order );
		} catch ( PayPalApiException $error ) {
			return $this->handle_payment_failure(
				$wc_order,
				new Exception(
					Messages::generic_payment_error_message() . ' ' . $error->getMessage(),
					$error->getCode(),
					$error
				)
			);
		} catch ( RuntimeException $error ) {
			return $this->handle_payment_failure( $wc_order, $error );
		}
	}

	/**
	 * Process refund.
	 *
	 * If the gateway declares 'refunds' support, this will allow it to refund.
	 * a passed in amount.
	 *
	 * @param  int    $order_id Order ID.
	 * @param  float  $amount Refund amount.
	 * @param  string $reason Refund reason.
	 * @return boolean True or false based on success, or a WP_Error object.
	 */
	public function process_refund( $order_id, $amount = null, $reason = '' ) {
		$order = wc_get_order( $order_id );
		if ( ! is_a( $order, \WC_Order::class ) ) {
			return false;
		}
		return $this->refund_processor->process( $order, (float) $amount, (string) $reason );
	}

	/**
	 * Return transaction url for this gateway and given order.
	 *
	 * @param \WC_Order $order WC order to get transaction url by.
	 *
	 * @return string
	 */
	public function get_transaction_url( $order ): string {
		$this->view_transaction_url = $this->transaction_url_provider->get_transaction_url_base( $order );

		return parent::get_transaction_url( $order );
	}

	/**
	 * Returns the settings renderer.
	 *
	 * @return SettingsRenderer
	 */
	protected function settings_renderer(): SettingsRenderer {
		return $this->settings_renderer;
	}
}
