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| 1 | <?php |
| 2 | /** |
| 3 | * VideoPress Channel: a page for every video in the media library. |
| 4 | * |
| 5 | * A video is a VideoPress attachment; nothing has to be written around it. |
| 6 | * `/videopress?v=<guid>` renders the theme's `videopress-video` block template |
| 7 | * for that attachment, where a video block with `useQueriedVideo` plays it. |
| 8 | * Titles, posters and the rest of the video's metadata come from VideoPress |
| 9 | * at render time and are never stored on the blog. |
| 10 | * |
| 11 | * Enabled when the active theme declares `add_theme_support( 'videopress-channel' )` |
| 12 | * or the `videopress_channel_enabled` filter returns true. |
| 13 | * |
| 14 | * @package automattic/jetpack-videopress |
| 15 | */ |
| 16 | |
| 17 | namespace Automattic\Jetpack\VideoPress; |
| 18 | |
| 19 | use WP; |
| 20 | use WP_Post; |
| 21 | |
| 22 | /** |
| 23 | * VideoPress Channel feature. |
| 24 | */ |
| 25 | class Channel { |
| 26 | |
| 27 | const MIME_TYPE = 'video/videopress'; |
| 28 | const ENDPOINT = 'videopress'; |
| 29 | const QUERY_VAR = 'videopress_video'; |
| 30 | const TEMPLATE = 'videopress-video'; |
| 31 | |
| 32 | /** |
| 33 | * Whether the feature has been wired up in this request. |
| 34 | * |
| 35 | * @var bool |
| 36 | */ |
| 37 | private static $initialized = false; |
| 38 | |
| 39 | /** |
| 40 | * Hook the feature up. Registration itself waits for `init`, when the |
| 41 | * active theme is known. |
| 42 | * |
| 43 | * @return void |
| 44 | */ |
| 45 | public static function init() { |
| 46 | if ( self::$initialized ) { |
| 47 | return; |
| 48 | } |
| 49 | self::$initialized = true; |
| 50 | |
| 51 | add_action( 'init', array( __CLASS__, 'register' ), 9 ); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Whether the channel feature is enabled for this site. |
| 56 | * |
| 57 | * @return bool |
| 58 | */ |
| 59 | public static function is_enabled() { |
| 60 | $enabled = function_exists( 'current_theme_supports' ) && current_theme_supports( 'videopress-channel' ); |
| 61 | |
| 62 | /** |
| 63 | * Filters whether the VideoPress Channel feature ( video pages ) is enabled. |
| 64 | * |
| 65 | * @since 0.55.0 |
| 66 | * |
| 67 | * @param bool $enabled True when the active theme supports `videopress-channel`. |
| 68 | */ |
| 69 | return (bool) apply_filters( 'videopress_channel_enabled', $enabled ); |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Register the video page routing and the block hooks. |
| 74 | * |
| 75 | * @return void |
| 76 | */ |
| 77 | public static function register() { |
| 78 | if ( ! self::is_enabled() ) { |
| 79 | return; |
| 80 | } |
| 81 | |
| 82 | add_filter( 'query_vars', array( __CLASS__, 'query_vars' ) ); |
| 83 | add_action( 'parse_request', array( __CLASS__, 'route_video_page' ) ); |
| 84 | add_filter( 'attachment_template_hierarchy', array( __CLASS__, 'template_hierarchy' ) ); |
| 85 | add_filter( 'attachment_link', array( __CLASS__, 'attachment_link' ), 10, 2 ); |
| 86 | add_filter( 'videopress_playlist_entry_url', array( __CLASS__, 'playlist_entry_url' ), 10, 2 ); |
| 87 | add_filter( 'render_block_data', array( __CLASS__, 'queried_video_block' ) ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * The VideoPress GUID of an attachment, or an empty string. |
| 92 | * |
| 93 | * Jetpack sites store it in attachment meta; WordPress.com Simple keeps the |
| 94 | * uploaded file's attachment ( still `video/mp4` ) and maps it in the |
| 95 | * platform's videos table. |
| 96 | * |
| 97 | * @param int|WP_Post $attachment The attachment. |
| 98 | * @return string |
| 99 | */ |
| 100 | public static function guid( $attachment ) { |
| 101 | $post = get_post( $attachment ); |
| 102 | if ( ! $post instanceof WP_Post || 'attachment' !== $post->post_type || 0 !== strpos( (string) $post->post_mime_type, 'video/' ) ) { |
| 103 | return ''; |
| 104 | } |
| 105 | $guid = (string) get_post_meta( $post->ID, 'videopress_guid', true ); |
| 106 | if ( '' === $guid ) { |
| 107 | $meta = wp_get_attachment_metadata( $post->ID ); |
| 108 | $guid = isset( $meta['videopress']['guid'] ) ? (string) $meta['videopress']['guid'] : ''; |
| 109 | } |
| 110 | if ( '' === $guid && function_exists( 'video_get_info_by_blogpostid' ) ) { |
| 111 | // WordPress.com's videos table; the package shims this from post meta elsewhere. |
| 112 | $info = video_get_info_by_blogpostid( get_current_blog_id(), $post->ID ); |
| 113 | $guid = is_object( $info ) && ! empty( $info->guid ) ? (string) $info->guid : ''; |
| 114 | } |
| 115 | return preg_match( '/^[a-zA-Z0-9]{8}$/', $guid ) ? $guid : ''; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * The attachment a VideoPress GUID belongs to on this site, or 0. |
| 120 | * |
| 121 | * @param string $guid The GUID. |
| 122 | * @return int |
| 123 | */ |
| 124 | public static function attachment_id( $guid ) { |
| 125 | if ( ! is_string( $guid ) || ! preg_match( '/^[a-zA-Z0-9]{8}$/', $guid ) ) { |
| 126 | return 0; |
| 127 | } |
| 128 | $id = function_exists( 'videopress_get_post_id_by_guid' ) ? videopress_get_post_id_by_guid( $guid ) : false; |
| 129 | if ( ! is_int( $id ) && function_exists( 'video_get_info_by_guid' ) ) { |
| 130 | $info = video_get_info_by_guid( $guid ); |
| 131 | if ( is_object( $info ) && ! empty( $info->post_id ) && (int) $info->blog_id === get_current_blog_id() ) { |
| 132 | $id = (int) $info->post_id; |
| 133 | } |
| 134 | } |
| 135 | return is_int( $id ) && $id > 0 ? $id : 0; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * The channel page of a video: `/videopress?v=<guid>`. |
| 140 | * |
| 141 | * @param int|WP_Post $attachment The attachment. |
| 142 | * @return string Empty when the attachment is not a VideoPress video. |
| 143 | */ |
| 144 | public static function video_url( $attachment ) { |
| 145 | $guid = self::guid( $attachment ); |
| 146 | return '' === $guid ? '' : add_query_arg( 'v', $guid, user_trailingslashit( home_url( '/' . self::ENDPOINT ) ) ); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Public query vars: `v` selects the video, `videopress_video` marks the page. |
| 151 | * |
| 152 | * @param string[] $vars Query vars. |
| 153 | * @return string[] |
| 154 | */ |
| 155 | public static function query_vars( $vars ) { |
| 156 | $vars[] = 'v'; |
| 157 | $vars[] = self::QUERY_VAR; |
| 158 | return $vars; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * `/videopress?v=<guid>` becomes the attachment's request, so the main |
| 163 | * query, the template context and the post blocks all see the video. |
| 164 | * An unknown GUID 404s. |
| 165 | * |
| 166 | * @param WP $wp The request. |
| 167 | * @return void |
| 168 | */ |
| 169 | public static function route_video_page( $wp ) { |
| 170 | $path = trim( (string) $wp->request, '/' ); |
| 171 | if ( self::ENDPOINT !== $path && empty( $wp->query_vars[ self::QUERY_VAR ] ) ) { |
| 172 | return; |
| 173 | } |
| 174 | $guid = isset( $_GET['v'] ) ? sanitize_text_field( wp_unslash( $_GET['v'] ) ) : ( $wp->query_vars['v'] ?? '' ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- public URL. |
| 175 | $id = self::attachment_id( $guid ); |
| 176 | if ( ! $id ) { |
| 177 | $wp->query_vars = array( 'error' => '404' ); |
| 178 | return; |
| 179 | } |
| 180 | $wp->query_vars = array( |
| 181 | 'attachment_id' => $id, |
| 182 | 'post_type' => 'attachment', |
| 183 | self::QUERY_VAR => 1, |
| 184 | 'v' => $guid, |
| 185 | ); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Video pages render the theme's `videopress-video` block template. |
| 190 | * |
| 191 | * @param string[] $templates Template hierarchy. |
| 192 | * @return string[] |
| 193 | */ |
| 194 | public static function template_hierarchy( $templates ) { |
| 195 | if ( get_query_var( self::QUERY_VAR ) ) { |
| 196 | array_unshift( $templates, self::TEMPLATE . '.php' ); |
| 197 | } |
| 198 | return $templates; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * VideoPress attachments link to their channel page. |
| 203 | * |
| 204 | * @param string $link Attachment permalink. |
| 205 | * @param int $post_id The attachment. |
| 206 | * @return string |
| 207 | */ |
| 208 | public static function attachment_link( $link, $post_id ) { |
| 209 | $url = self::video_url( $post_id ); |
| 210 | return '' === $url ? $link : $url; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Playlist entries that open a video link to its channel page when the |
| 215 | * video belongs to this site. |
| 216 | * |
| 217 | * @param string $url The entry URL ( videopress.com by default ). |
| 218 | * @param string $guid The video GUID. |
| 219 | * @return string |
| 220 | */ |
| 221 | public static function playlist_entry_url( $url, $guid ) { |
| 222 | $id = self::attachment_id( $guid ); |
| 223 | return $id ? self::video_url( $id ) : $url; |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * The video a block refers to: the Query Loop entry when it is a |
| 228 | * VideoPress attachment, else the queried attachment. |
| 229 | * |
| 230 | * @param int $context_post_id The block's postId context, if any. |
| 231 | * @return WP_Post|null |
| 232 | */ |
| 233 | public static function current_video( $context_post_id = 0 ) { |
| 234 | $candidates = array( (int) $context_post_id, (int) get_the_ID() ); |
| 235 | $queried = get_queried_object(); |
| 236 | if ( $queried instanceof WP_Post ) { |
| 237 | $candidates[] = (int) $queried->ID; |
| 238 | } |
| 239 | foreach ( $candidates as $id ) { |
| 240 | $post = $id ? get_post( $id ) : null; |
| 241 | if ( $post instanceof WP_Post && '' !== self::guid( $post ) ) { |
| 242 | return $post; |
| 243 | } |
| 244 | } |
| 245 | return null; |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * A video block with `useQueriedVideo` plays the current video. Its title |
| 250 | * and poster are read from VideoPress at render time, not from the blog. |
| 251 | * |
| 252 | * @param array $parsed_block The block being rendered. |
| 253 | * @return array |
| 254 | */ |
| 255 | public static function queried_video_block( $parsed_block ) { |
| 256 | if ( ! isset( $parsed_block['blockName'] ) || 'videopress/video' !== $parsed_block['blockName'] || empty( $parsed_block['attrs']['useQueriedVideo'] ) ) { |
| 257 | return $parsed_block; |
| 258 | } |
| 259 | $post = self::current_video(); |
| 260 | $guid = $post instanceof WP_Post ? self::guid( $post ) : ''; |
| 261 | if ( ! $post instanceof WP_Post || '' === $guid ) { |
| 262 | $parsed_block['attrs']['guid'] = ''; |
| 263 | return $parsed_block; |
| 264 | } |
| 265 | $details = function_exists( 'videopress_get_video_details' ) ? videopress_get_video_details( $guid ) : null; |
| 266 | $details = is_object( $details ) && ! is_wp_error( $details ) ? $details : null; |
| 267 | |
| 268 | $parsed_block['attrs']['guid'] = $guid; |
| 269 | $parsed_block['attrs']['id'] = $post->ID; |
| 270 | $parsed_block['attrs']['src'] = 'https://videopress.com/v/' . $guid; |
| 271 | $parsed_block['attrs']['title'] = $details && ! empty( $details->title ) ? (string) $details->title : get_the_title( $post ); |
| 272 | if ( $details && ! empty( $details->poster ) ) { |
| 273 | $parsed_block['attrs']['poster'] = (string) $details->poster; |
| 274 | } |
| 275 | return $parsed_block; |
| 276 | } |
| 277 | } |