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<?php

namespace Simply_Static;

class Yoast_Integration extends Integration {

	/**
	 * Given plugin handler ID.
	 *
	 * @var string Handler ID.
	 */
	protected $id = 'yoast';

	public function __construct() {
		$this->name = __( 'Yoast', 'simply-static' );
		$this->description = __( 'Automatically includes your XML sitemaps, handles URL replacements in schema.org markup, and creates redirects on your static site for you.', 'simply-static' );
	}

	/**
	 * Run the integration.
	 *
	 * @return void
	 */
	public function run() {
		add_action( 'ss_after_setup_task', [ $this, 'register_sitemap_page' ] );
		add_action( 'ss_after_setup_task', [ $this, 'register_redirections' ] );
		add_action( 'ss_dom_before_save', [ $this, 'replace_json_schema' ], 10, 2 );

		// Maybe update sitemap on single export.
		$add_sitemap_single_export = apply_filters( 'ssp_single_export_add_xml_sitemap', false );

		if ( $add_sitemap_single_export ) {
			add_filter( 'ssp_single_export_additional_urls', [ $this, 'add_sitemap_url' ] );
		}

		$this->include_file( 'handlers/class-ss-yoast-sitemap-handler.php' );
	}

	/**
	 * Register all redirections.
	 *
	 * @return void
	 */
	public function register_redirections() {
		// Only on full or update exports.
		$use_single = get_option( 'simply-static-use-single' );
		$use_build  = get_option( 'simply-static-use-build' );

		if ( ! empty( $use_build ) || ! empty( $use_single ) ) {
			return;
		}

		$redirections = get_option("wpseo-premium-redirects-base");

		if ( ! $redirections ) {
			return;
		}

		foreach ( $redirections as $redirection ) {

			if ( strpos( $redirection['origin'], 'http' ) === 0 ) {
				continue;
			}

			$url = home_url( $redirection['origin'] );
			Util::debug_log( 'Adding Yoast redirection URL to queue: ' . $url );
			/** @var \Simply_Static\Page $static_page */
			$static_page = Page::query()->find_or_initialize_by( 'url', $url );
			$static_page->set_status_message( __( 'Yoast Redirection URL', 'simply-static' ) );
			$static_page->found_on_id = 0;
			$static_page->save();
		}

	}

	/**
	 * Register sitemap maps for static export.
	 *
	 * @return void
	 */
	public function register_sitemap_page() {
		if ( ! class_exists( 'WPSEO_Sitemaps_Router' ) ) {
			return;
		}

		$urls = array(
			\WPSEO_Sitemaps_Router::get_base_url( 'sitemap.xml' ),
			\WPSEO_Sitemaps_Router::get_base_url( 'sitemap_index.xml' ),
		);

		foreach ( $urls as $url ) {
			Util::debug_log( 'Adding sitemap URL to queue: ' . $url );
			/** @var \Simply_Static\Page $static_page */
			$static_page = Page::query()->find_or_initialize_by( 'url', $url );
			$static_page->set_status_message( __( 'Sitemap URL', 'simply-static' ) );
			$static_page->found_on_id = 0;
			$static_page->handler     = Yoast_Sitemap_Handler::class;
			$static_page->save();
		}
	}

	/**
	 * Add XML sitemap to single exports.
	 *
	 * @param $urls
	 *
	 * @return mixed
	 */
	public function add_sitemap_url( $urls ) {
		if ( ! class_exists( 'WPSEO_Sitemaps_Router' ) ) {
			return $urls;
		}

		$urls[] = \WPSEO_Sitemaps_Router::get_base_url( 'sitemap.xml' );
		$urls[] = \WPSEO_Sitemaps_Router::get_base_url( 'sitemap_index.xml' );

		return $urls;
	}

	/**
	 * Replace JSON schema for schema.org
	 *
	 * @param object $dom given dom element.
	 * @param string $url given URL.
	 *
	 * @return object
	 */
	public function replace_json_schema( $dom, $url ) {
		$options = Options::instance();

		foreach ( $dom->find( 'script.yoast-schema-graph' ) as $script ) {
			$decoded_text      = html_entity_decode( $script->outertext, ENT_NOQUOTES );
			$text              = preg_replace( '/(https?:)?\/\/' . addcslashes( Util::origin_host(), '/' ) . '/i', $options->get_destination_url(), $decoded_text );
			$script->outertext = $text;
		}

		return $dom;
	}

	/**
	 * Return if the dependency is active.
	 *
	 * @return boolean
	 */
	public function dependency_active() {
		return defined( 'WPSEO_FILE' );
	}
}