class-instant-articles-meta-box.php

<?php
/**
 * Facebook Instant Articles for WP.
 * This source code is licensed under the license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @package default
 */

use Facebook\InstantArticles\Client\Client;
use Facebook\InstantArticles\Client\InstantArticleStatus;
use Facebook\InstantArticles\Client\ServerMessage;

/**
 * Class responsible for drawing the meta box on the post edit page
 *
 * @since 0.1
 */
class Instant_Articles_Meta_Box {

	/**
	 * Initiator for Metabox.
	 */
	public static function init() {
		add_action( 'add_meta_boxes', array( 'Instant_Articles_Meta_Box', 'register_meta_box' ) );
		add_action(
			'wp_ajax_instant_articles_meta_box',
			array( 'Instant_Articles_Meta_Box', 'render_meta_box' )
		);
		add_action(
			'wp_ajax_instant_articles_force_submit',
			array( 'Instant_Articles_Meta_Box', 'force_submit' )
		);
	}

	/**
	 * Register Meta Box renderer.
	 */
	public static function register_meta_box() {
		add_meta_box(
			'instant_article_meta_box',
			'Facebook Instant Articles',
			array( 'Instant_Articles_Meta_Box', 'render_meta_box_loader' ),

			/** This filter is defined in facebook-instant-articles.php. */
			apply_filters( 'instant_articles_post_types', array( 'post' ) ),
			'normal',
			'default'
		);
	}

	/**
	 * Includes the template for Metabox.
	 *
	 * @param Post $post the post request content.
	 */
	public static function render_meta_box_loader( $post ) {
		if ( ! current_user_can( 'edit_post', $post->ID ) ) {
			return;
		}

		include( dirname( __FILE__ ) . '/meta-box-loader-template.php' );
	}

	/**
	 * Renderer for the Metabox.
	 */
	public static function force_submit() {
		$post_id = intval( $_POST[ 'post_ID' ] );

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			wp_die( -1, 403 );
		}

		check_ajax_referer( 'instant-articles-force-submit-' . $post_id, 'security' );
		$force = sanitize_text_field( $_POST[ 'force' ] ) === 'true';
		update_post_meta( $post_id, IA_PLUGIN_FORCE_SUBMIT_KEY, $force );
	}

	/**
	 * Renderer for the Metabox.
	 */
	public static function render_meta_box() {
		$post_id = intval( $_POST[ 'post_ID' ] );

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			wp_die( -1, 403 );
		}

		$ajax_nonce = wp_create_nonce( "instant-articles-force-submit-" . $post_id );
		$post = get_post( $post_id );
		$adapter = new Instant_Articles_Post( $post );

		try {
			$article = $adapter->to_instant_article();
			$canonical_url = $adapter->get_canonical_url();
			$published = ( 'publish' === $post->post_status );
			$dev_mode = false;
			$force_submit = get_post_meta( $post_id, IA_PLUGIN_FORCE_SUBMIT_KEY, true );
			$instant_articles_should_submit_post_filter = apply_filters( 'instant_articles_should_submit_post', true, $adapter );

			Instant_Articles_Wizard::menu_items();
			$settings_page_href = Instant_Articles_Wizard::get_url();

			$publishing_settings = Instant_Articles_Option_Publishing::get_option_decoded();
			$publish_with_warnings = isset( $publishing_settings[ 'publish_with_warnings' ] ) ? $publishing_settings[ 'publish_with_warnings' ] : false;
			$fb_page_settings = Instant_Articles_Option_FB_Page::get_option_decoded();
			$publishing_settings = Instant_Articles_Option_Publishing::get_option_decoded();

			$dev_mode = isset( $publishing_settings['dev_mode'] )
				? ( $publishing_settings['dev_mode'] ? true : false )
				: false;

			include( dirname( __FILE__ ) . '/meta-box-template.php' );
		} catch (Exception $e) {
			include( dirname( __FILE__ ) . '/meta-box-error.php' );
		}

		die();
	}
}