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<?php
/**
 * Block Settings
 *
 * @package WPDesk\FS\Compatibility
 */

namespace WPDesk\FS\Compatibility;

use WC_Shipping_Zones;
use WPDesk_Flexible_Shipping;

/**
 * Can prevent Flexible Shipping settings saving.
 */
class BlockSettings {
	/**
	 * @var PluginCompatibilityChecker .
	 */
	private $plugin_compatibility_checker;

/**
	 * Notice constructor.
	 *
	 * @param PluginCompatibilityChecker $plugin_compatibility_checker .
	 */
	public function __construct( PluginCompatibilityChecker $plugin_compatibility_checker ) {
		$this->plugin_compatibility_checker = $plugin_compatibility_checker;
	}

/**
	 * Add hooks.
	 */
	public function hooks() {
		add_action( 'admin_init', array( $this, 'block_save_settings' ) );
		add_action( 'flexible-shipping/method-rules-settings/table/before', array(
			$this,
			'add_flexible_shipping_method_message'
		) );
		add_action( 'flexible_shipping_method_script', array( $this, 'add_flexible_shipping_method_message' ) );
	}

/**
	 * Action when setting are saving.
	 */
	public function block_save_settings() {
		if ( ! isset( $_POST['save'], $_POST['settings_saving_block'] ) ) {
			return;
		}

$tab  = filter_input( INPUT_GET, 'tab' );
		$page = filter_input( INPUT_GET, 'page' );

if ( 'wc-settings' !== $page || 'shipping' !== $tab ) {
			return;
		}

$_wpnonce = filter_input( INPUT_POST, '_wpnonce' );

if ( ! wp_verify_nonce( wp_unslash( $_wpnonce ), 'woocommerce-settings' ) ) {
			return;
		}

$method_title = filter_input( INPUT_POST, 'woocommerce_flexible_shipping_method_title' );
		$instance_id  = absint( wp_unslash( filter_input( INPUT_GET, 'instance_id' ) ) );

if ( ! $method_title || ! $instance_id ) {
			return;
		}

$shipping_method = WC_Shipping_Zones::get_shipping_method( $instance_id );

if ( ! $shipping_method ) {
			return;
		}

wp_die( $this->get_general_message(), '', array(
			'link_url'  => $this->get_plugin_update_url(),
			'link_text' => $this->get_plugin_update_label(),
			'back_link' => true,
		) ); // WPCS: XSS OK.
	}

/**
	 * Add scripts for FS method.
	 */
	public function add_flexible_shipping_method_message() {
		$status = (bool) apply_filters( 'plugin_compatibility_checker/js_added', false );

if ( $status ) {
			return;
		}

$action = filter_input( INPUT_GET, 'action' );

if ( ! $action ) {
			return;
		}

add_filter( 'plugin_compatibility_checker/js_added', '__return_true' );

$message = $this->get_message_for_settings();

include wp_normalize_path( __DIR__ . '/views/html-update-settings-alert.php' );
	}

/**
	 * Message for incompatible plugins.
	 *
	 * @return string
	 */
	private function get_message_for_settings() {
		return sprintf(
			'%s %s',
			$this->get_general_message(),
			sprintf(
				'%s%s%s',
				sprintf(
					'<a target="_blank" href="%s">',
					$this->get_plugin_update_url()
				),
				$this->get_plugin_update_label(),
				'</a>'
			)
		);
	}

/**
	 * @return string
	 */
	private function get_general_message() {
		$plugins = implode( ', ', $this->plugin_compatibility_checker->get_list_of_incompatible_plugins() );

return sprintf(
			__( 'In order to prevent any further issues with the plugin configuration or its proper functioning, before saving the changes please update the following: %s.', 'wp-wpdesk-fs-compatibility' ),
			sprintf( '<strong>%s</strong>', $plugins )
		);
	}

/**
	 * @return string
	 */
	private function get_plugin_update_label() {
		return __( 'Go to the plugins list &rarr;', 'wp-wpdesk-fs-compatibility' );
	}

/**
	 * @return string
	 */
	private function get_plugin_update_url() {
		return add_query_arg( 's', 'Flexible Shipping', admin_url( 'plugins.php' ) );
	}
}