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<?php
/**
* Video sitemap.
*
* @package SmartCrawl
*/
namespace SmartCrawl\Sitemaps\Video;
/**
* Sitemap
*
* @todo Remove this class until we can properly develop this feature. We can probably reuse the schema video functionality
*/
class Sitemap {
const VIDEO_SITEMAP_LIMIT = 50000;
/**
* Provider regex.
*
* @var array
*/
private $_provider_regex = array();
/**
* No video oembed.
*
* @var string[]
*/
private $_no_video_oembed = array(
'polldaddy',
'smugmug',
'flickr',
'scribd',
'photobucket',
'twitter',
);
/**
* Items.
*
* @var array
*/
private $_items = array();
/**
* Class constructor.
*/
private function __construct() {
if ( ! is_admin() ) {
$this->_provider_regex = $this->get_provider_regexen();
}
}
/**
* Get provider regexen.
*
* @return array
*/
private function get_provider_regexen() {
$oembed = $this->get_oembed_providers();
$static = $this->get_static_providers();
$supplements = $this->get_supplement_providers();
return array_merge(
$oembed,
$static,
$supplements
);
}
/**
* Get oEmbed providers.
*
* @return array
*/
private function get_oembed_providers() {
if ( ! class_exists( '\WP_oEmbed' ) ) {
// Short out if not available.
include ABSPATH . WPINC . '/class-oembed.php';
}
$embed = new \WP_oEmbed();
$providers = array();
foreach ( $embed->providers as $rx => $provider ) {
if ( empty( $provider[0] ) ) {
continue;
}
if ( ! $this->filter_non_video_provider_callback( $provider[0] ) ) {
continue;
}
if ( ! empty( $provider[1] ) ) {
// Kill front delimiter.
$rx = substr( $rx, 1 );
// Kill end delimiter and possibly the "i" modifier.
$end = ( 'i' === substr( $rx, - 1 ) ) ? 2 : 1;
$rx = substr( $rx, 0, strlen( $rx ) - $end );
}
$providers[] = $rx;
}
return $providers;
}
/**
* Filter non-video provider callback.
*
* @param string $provider Provider URL.
*
* @return bool
*/
private function filter_non_video_provider_callback( $provider ) {
foreach ( $this->_no_video_oembed as $skip ) {
if ( preg_match( '/' . preg_quote( $skip, '/' ) . '/i', $provider ) ) {
return false;
}
}
return true;
}
/**
* Get static providers.
*
* @return array
*/
private function get_static_providers() {
return array(
'//(www\\.)?youtube.com/watch.*',
'//youtu.be/.*',
'//blip.tv/.*',
'//(.*\\.)?vimeo\\.com/.*',
'//(www\\.)?dailymotion\\.com/.*',
'//(www\\.)?hulu\\.com/watch/.*',
'//(www\\.)?viddler\\.com/.*',
'//qik.com/.*',
'//revision3.com/.*',
'//wordpress.tv/.*',
'//(www\\.)?funnyordie\\.com/videos/.*',
);
}
/**
* Get supplement providers.
*
* @return array
*/
private function get_supplement_providers() {
return array(
'//(www\\.)?youtube.com/.*', // For IFRAME embeds.
);
}
/**
* Serve the sitemap.
*/
public static function serve() {
$me = new Sitemap();
$me->add_hooks();
add_action( 'save_post', array( $me, 'clean_posts_cache' ) );
add_action( 'deleted_post', array( $me, 'clean_posts_cache' ) );
add_action( 'wp_trash_post', array( $me, 'clean_posts_cache' ) );
}
/**
* Add hooks.
*/
private function add_hooks() {
if ( is_admin() ) {
return;
}
if ( isset( $_SERVER['REQUEST_URI'] ) && preg_match( '~' . preg_quote( '/video-sitemap.xml', '/' ) . '(\.gz)?$~i', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ) {
$this->update_items_list();
$this->serve_video_sitemap();
}
}
/**
* Update items list.
*/
private function update_items_list() {
global $wpdb;
$posts = wp_cache_get( 'wds-select-items-list', 'wds-video-sitemaps' );
if ( ! $posts ) {
$likes = join( "' OR post_content REGEXP '", $this->_provider_regex );
$limit = self::VIDEO_SITEMAP_LIMIT;
$sql = "SELECT * FROM $wpdb->posts WHERE post_status='publish' AND (post_content REGEXP '$likes') LIMIT $limit";
$posts = $wpdb->get_results( $sql ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
}
wp_cache_add( 'wds-select-items-list', $posts, 'wds-video-sitemaps', 86400 );
foreach ( $posts as $post ) {
// Exclude by post types.
// ...
// Exclude by taxonomies.
// ...
$this->add_video_item( $post );
}
}
/**
* Add video item.
*
* @param object $raw Raw post object.
*/
private function add_video_item( $raw ) {
$player = $this->extract_player_loc( $raw->ID, $raw->post_content );
if ( ! $player ) {
return;
}
$image = apply_filters( 'wds-video_sitemaps-thumbnail_url-default', '' );
if ( ! $image ) {
$image = $this->extract_thumbnail_from_player_src( $raw->ID, $player );
$image = apply_filters( 'wds-video_sitemaps-thumbnail_url', $image, $raw->ID, $player );
$image = $image ? $image : apply_filters( 'wds-video_sitemaps-thumbnail_url-fallback', $image );
}
if ( ! $image ) {
// No thumbnail image, we can't add this item.
return;
}
$loc = urldecode( get_permalink( $raw->ID ) );
$this->_items[ $loc ] = array(
'title' => $raw->post_title,
'description' => substr( wp_strip_all_tags( $raw->post_content ), 0, 12 ),
'thumbnail_loc' => $image,
'player_loc' => $player,
'publication_date' => mysql2date( 'Y-m-d', $raw->post_date ),
);
}
/**
* Extract player location.
*
* @param int $post_id Post ID.
* @param string $body Post content.
*
* @return string|false
*/
private function extract_player_loc( $post_id, $body ) {
$post_id = (int) $post_id;
$markup = false;
$src = false;
// We get all the post meta.
$all_post_meta = get_post_meta( $post_id );
// Now iterate through the meta and see if we can find an _oembed* element.
foreach ( $all_post_meta as $key => $value ) {
if ( preg_match( '/^_oembed.*/', $key ) && $value ) {
// We have found an oembed meta, let's save it.
$markup = $value;
break;
}
}
if ( $markup ) {
$matches = array();
preg_match( '/src=[\'"](.*?)[\'"]/', $markup, $matches );
if ( empty( $matches[1] ) ) {
return apply_filters( 'wds-video_sitemaps-player_loc', false, $post_id, $body );
}
$src = $matches[1];
} else {
// No eombed video found, heuristics should kick in.
foreach ( $this->_provider_regex as $rx ) {
$matches = array();
if ( ! preg_match( '#(' . $rx . '?)[\'"]#i', $body, $matches ) ) {
continue;
}
$src = substr( $matches[0], 0, - 1 );
break;
}
}
return apply_filters( 'wds-video_sitemaps-player_loc', $src, $post_id, $body );
}
/**
* Extract thumbnail from player source.
*
* @param int $post_id Post ID.
* @param string $src Player source URL.
*
* @return string|false
*/
private function extract_thumbnail_from_player_src( $post_id, $src ) {
$host = wp_parse_url( $src, PHP_URL_HOST );
$path = wp_parse_url( $src, PHP_URL_PATH );
$path_parts = explode( '/', $path );
$video_id = end( $path_parts );
if ( preg_match( '/youtu\.?be/', $host ) ) {
// YouTube.
return $video_id
? "http://img.youtube.com/vi/$video_id/hqdefault.jpg"
: '';
} elseif ( preg_match( '/vimeo/', $host ) ) {
// Vimeo requires us to an API call, so...
// First find out video ID and check cache.
$thumbnail = get_post_meta( $post_id, '_vimeo_thumbnail_id-' . $video_id, true );
if ( $thumbnail ) {
return $thumbnail;
}
// Next, check if we're to do this.
if ( ! ( defined( '\SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS' ) && \SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS ) ) {
return false;
}
// No cache - fetch from remote API and update cache for next time.
$response = wp_remote_get( "http://vimeo.com/api/v2/video/$video_id.php" );
if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
return false;
}
if ( ! empty( $body[0]['thumbnail_medium'] ) ) {
$thumbnail = $body[0]['thumbnail_medium'];
update_post_meta( $post_id, '_vimeo_thumbnail_id-' . $video_id, $thumbnail );
}
return $thumbnail;
} elseif ( preg_match( '/blip\.tv/', $host ) ) {
// Blip.tv.
$thumbnail = get_post_meta( $post_id, '_blip_thumbnail_id-' . $video_id, true );
if ( $thumbnail ) {
return $thumbnail;
}
// Blip.tv - same deal as Vimeo, remote call is needed.
if ( ! ( defined( '\SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS' ) && \SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS ) ) {
return false;
}
// No cache - fetch from remote API and update cache for next time.
$response = wp_remote_get( "http://blip.tv/players/episode/$video_id?skin=rss" );
if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
return false;
}
$body = wp_remote_retrieve_body( $response );
preg_match( '/<blip:picture>(.*)<\/blip:picture>/i', $body, $matches );
if ( ! empty( $matches[1] ) ) {
$thumbnail = $matches[1];
update_post_meta( $post_id, '_blip_thumbnail_id-' . $video_id, $thumbnail );
}
return $thumbnail;
} elseif ( preg_match( '/wordpress\./', $host ) ) {
// WordPress.tv.
$thumbnail = get_post_meta( $post_id, '_wordpresstv_thumbnail_id-' . $video_id, true );
if ( $thumbnail ) {
return $thumbnail;
}
// Dispatch an oEmbed call, if allowed and needed.
if ( ! ( defined( '\SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS' ) && \SMARTCRAWL_VIDEO_SITEMAP_ALLOW_API_CALLS ) ) {
return false;
}
$post = get_post( $post_id );
preg_match( '#(//wordpress.tv/[\-_/.a-z0-9]+)#i', $post->post_content, $matches );
if ( empty( $matches[1] ) ) {
return false;
}
$response = wp_remote_get( '//public-api.wordpress.com/oembed/1.0/?format=json&url=' . rawurlencode( $matches[1] ) . '&for=' . rawurlencode( site_url() ) );
if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
return false;
}
$body = json_decode( wp_remote_retrieve_body( $response ), true );
if ( ! $body ) {
return false;
}
if ( ! empty( $body['thumbnail_url'] ) ) {
$thumbnail = $body['thumbnail_url'];
update_post_meta( $post_id, '_wordpresstv_thumbnail_id-' . $video_id, $thumbnail );
}
return $thumbnail;
}
// Default.
return apply_filters( 'wds-video_sitemaps-thumbnail_url-' . $host, '', $src, $post_id );
}
/**
* Serve video sitemap.
*/
private function serve_video_sitemap() {
if ( ! $this->_items ) {
return false;
}
$map = $this->prepare_sitemap();
if ( ! $map ) {
return false;
}
header( 'Content-type: text/xml' );
echo esc_html( $map );
die;
}
/**
* Prepare sitemap.
*
* @return string|false
*/
private function prepare_sitemap() {
if ( ! $this->_items ) {
return false;
}
$xml = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
$xml .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">' . "\n";
foreach ( $this->_items as $loc => $item ) {
$xml .= '<url>';
$xml .= "<loc>$loc</loc>";
$keys = array_keys( $item );
$xml .= '<video>';
foreach ( $keys as $key ) {
$value = empty( $item[ $key ] ) ? '' : htmlspecialchars( $item[ $key ] );
$xml .= "<video:$key>$value</video:$key>\n";
}
$xml .= '</video>';
$xml .= '</url>';
}
$xml .= '</urlset>';
return $xml;
}
/**
* Clean posts cache.
*/
public function clean_posts_cache() {
wp_cache_delete( 'wds-select-items-list', 'wds-video-sitemaps' );
}
}