<?php

class WCML_WPSEO {

	private $updated_post_id;

	public function __construct() {

		add_filter( 'wcml_product_content_label', [ $this, 'wpseo_custom_field_label' ], 10, 2 );

		if ( 'all' === WPML\FP\Obj::prop( 'clang', $_GET ) ) {
			add_filter( 'wpseo_robots_array', [ $this, 'noindex_all_comments_page' ], 10, 1 );
		}

		if ( defined( 'WPSEO_VERSION' ) && defined( 'WPSEO_PATH' ) && isset( $_GET['page'] ) && $_GET['page'] == 'wpml-wcml' && isset( $_GET['tab'] ) && $_GET['tab'] == 'products' ) {
			if ( version_compare( WPSEO_VERSION, '3', '<' ) ) {
				require_once WPSEO_PATH . 'admin/class-metabox.php';
			} elseif ( file_exists( WPSEO_PATH . 'admin/metabox/class-metabox.php' ) ) {
				require_once WPSEO_PATH . 'admin/metabox/class-metabox.php';
			}
		}

		add_action( 'post_updated', [ $this, 'set_updated_post_id' ] );
		add_action( 'wpseo_premium_post_redirect_slug_change', [ $this, 'wpseo_premium_post_redirect_slug_change' ] );
	}

	public function wpseo_custom_field_label( $field, $product_id ) {
		global $woocommerce_wpml, $wpseo_metabox;

		$yoast_seo_fields = [ '_yoast_wpseo_focuskw', '_yoast_wpseo_title', '_yoast_wpseo_metadesc' ];

		if ( ! is_array( maybe_unserialize( get_post_meta( $product_id, $field, true ) ) ) ) {

			if ( ! is_null( $wpseo_metabox ) && in_array( $field, $yoast_seo_fields ) ) {

				$wpseo_metabox_values = $wpseo_metabox->get_meta_boxes( 'product' );

				$label = $wpseo_metabox_values[ str_replace( '_yoast_wpseo_', '', $field ) ]['title'];

				return $label;
			}
		}

		return $field;
	}

	public function set_updated_post_id( $post_id ) {
		$this->updated_post_id = $post_id;
	}

	public function wpseo_premium_post_redirect_slug_change( $slug_changed_flag ) {

		if ( null !== $this->updated_post_id && get_post_type( $this->updated_post_id ) === 'product_variation' ) {
			return true;
		}

		return $slug_changed_flag;
	}

	public function noindex_all_comments_page( $robotsArray ) {
		if ( isset( $robotsArray['index'] ) ) {
			unset( $robotsArray['index'] );
		}
		$robotsArray['noindex'] = 'noindex';
		return $robotsArray;
	}

}