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class.media-summary.php
464 lines
| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | /** |
| 3 | * Provides media summary of a post. |
| 4 | * |
| 5 | * @package automattic/jetpack |
| 6 | */ |
| 7 | |
| 8 | use Automattic\Jetpack\Image_CDN\Image_CDN_Core; |
| 9 | |
| 10 | /** |
| 11 | * Class Jetpack_Media_Summary |
| 12 | * |
| 13 | * Priority: embed [video] > gallery > image > text |
| 14 | */ |
| 15 | class Jetpack_Media_Summary { |
| 16 | |
| 17 | /** |
| 18 | * Media cache. |
| 19 | * |
| 20 | * @var array |
| 21 | */ |
| 22 | private static $cache = array(); |
| 23 | |
| 24 | /** |
| 25 | * Get media summary for a post. |
| 26 | * |
| 27 | * @param ?int $post_id Post ID. |
| 28 | * @param int $blog_id Blog ID, if applicable. |
| 29 | * @param array $args { |
| 30 | * Optional. An array of arguments. |
| 31 | * @type int $max_words Maximum number of words. |
| 32 | * @type int $max_chars Maximum number of characters. |
| 33 | * } |
| 34 | * |
| 35 | * @return array|mixed|void |
| 36 | */ |
| 37 | public static function get( ?int $post_id, int $blog_id = 0, array $args = array() ) { |
| 38 | $post_id = (int) $post_id; |
| 39 | $blog_id = (int) $blog_id; |
| 40 | |
| 41 | $defaults = array( |
| 42 | 'max_words' => 16, |
| 43 | 'max_chars' => 256, |
| 44 | ); |
| 45 | $args = wp_parse_args( $args, $defaults ); |
| 46 | |
| 47 | $switched = false; |
| 48 | if ( ! empty( $blog_id ) && get_current_blog_id() !== $blog_id && function_exists( 'switch_to_blog' ) ) { |
| 49 | switch_to_blog( $blog_id ); |
| 50 | $switched = true; |
| 51 | } else { |
| 52 | $blog_id = get_current_blog_id(); |
| 53 | } |
| 54 | |
| 55 | $cache_key = "{$blog_id}_{$post_id}_{$args['max_words']}_{$args['max_chars']}"; |
| 56 | if ( isset( self::$cache[ $cache_key ] ) ) { |
| 57 | if ( $switched ) { |
| 58 | restore_current_blog(); |
| 59 | } |
| 60 | return self::$cache[ $cache_key ]; |
| 61 | } |
| 62 | |
| 63 | if ( ! class_exists( 'Jetpack_Media_Meta_Extractor' ) ) { |
| 64 | require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-extractor.php'; |
| 65 | } |
| 66 | |
| 67 | $post = get_post( $post_id ); |
| 68 | $permalink = get_permalink( $post_id ); |
| 69 | |
| 70 | $return = array( |
| 71 | 'type' => 'standard', |
| 72 | 'permalink' => $permalink, |
| 73 | 'image' => '', |
| 74 | 'excerpt' => '', |
| 75 | 'word_count' => 0, |
| 76 | 'secure' => array( |
| 77 | 'image' => '', |
| 78 | ), |
| 79 | 'count' => array( |
| 80 | 'image' => 0, |
| 81 | 'video' => 0, |
| 82 | 'word' => 0, |
| 83 | 'link' => 0, |
| 84 | ), |
| 85 | ); |
| 86 | |
| 87 | if ( $post instanceof WP_Post && empty( $post->post_password ) ) { |
| 88 | $return['excerpt'] = self::get_excerpt( $post->post_content, $post->post_excerpt, $args['max_words'], $args['max_chars'], $post ); |
| 89 | $return['count']['word'] = self::get_word_count( $post->post_content ); |
| 90 | $return['count']['word_remaining'] = self::get_word_remaining_count( $post->post_content, $return['excerpt'] ); |
| 91 | $return['count']['link'] = self::get_link_count( $post->post_content ); |
| 92 | } |
| 93 | |
| 94 | $extract = Jetpack_Media_Meta_Extractor::extract( $blog_id, $post_id, Jetpack_Media_Meta_Extractor::ALL ); |
| 95 | |
| 96 | if ( empty( $extract['has'] ) ) { |
| 97 | if ( $switched ) { |
| 98 | restore_current_blog(); |
| 99 | } |
| 100 | self::$cache[ $cache_key ] = $return; |
| 101 | return $return; |
| 102 | } |
| 103 | |
| 104 | // Prioritize [some] video embeds. |
| 105 | if ( ! empty( $extract['has']['shortcode'] ) ) { |
| 106 | foreach ( $extract['shortcode'] as $type => $data ) { |
| 107 | switch ( $type ) { |
| 108 | case 'videopress': |
| 109 | case 'wpvideo': |
| 110 | if ( 0 === $return['count']['video'] ) { |
| 111 | // If there is no id on the video, then let's just skip this. |
| 112 | if ( ! isset( $data['id'][0] ) ) { |
| 113 | break; |
| 114 | } |
| 115 | |
| 116 | $guid = $data['id'][0]; |
| 117 | $video_info = videopress_get_video_details( $guid ); |
| 118 | |
| 119 | // Only add the video tags if the guid returns a valid videopress object. |
| 120 | if ( $video_info instanceof stdClass ) { |
| 121 | // Continue early if we can't find a Video slug. |
| 122 | if ( empty( $video_info->files->std->mp4 ) ) { |
| 123 | break; |
| 124 | } |
| 125 | |
| 126 | $url = sprintf( |
| 127 | 'https://videos.files.wordpress.com/%1$s/%2$s', |
| 128 | $guid, |
| 129 | $video_info->files->std->mp4 |
| 130 | ); |
| 131 | |
| 132 | $thumbnail = $video_info->poster; |
| 133 | if ( ! empty( $thumbnail ) ) { |
| 134 | $return['image'] = $thumbnail; |
| 135 | $return['secure']['image'] = $thumbnail; |
| 136 | } |
| 137 | |
| 138 | $return['type'] = 'video'; |
| 139 | $return['video'] = esc_url_raw( $url ); |
| 140 | $return['video_type'] = 'video/mp4'; |
| 141 | $return['secure']['video'] = $return['video']; |
| 142 | } |
| 143 | } |
| 144 | ++$return['count']['video']; |
| 145 | break; |
| 146 | case 'youtube': |
| 147 | if ( 0 === $return['count']['video'] ) { |
| 148 | if ( ! isset( $extract['shortcode']['youtube']['id'][0] ) ) { |
| 149 | break; |
| 150 | } |
| 151 | $return['type'] = 'video'; |
| 152 | $return['video'] = esc_url_raw( 'http://www.youtube.com/watch?feature=player_embedded&v=' . $extract['shortcode']['youtube']['id'][0] ); |
| 153 | $return['image'] = self::get_video_poster( 'youtube', $extract['shortcode']['youtube']['id'][0] ); |
| 154 | $return['secure']['video'] = self::https( $return['video'] ); |
| 155 | $return['secure']['image'] = self::https( $return['image'] ); |
| 156 | } |
| 157 | ++$return['count']['video']; |
| 158 | break; |
| 159 | case 'vimeo': |
| 160 | if ( 0 === $return['count']['video'] ) { |
| 161 | $return['type'] = 'video'; |
| 162 | $return['video'] = esc_url_raw( 'http://vimeo.com/' . $extract['shortcode']['vimeo']['id'][0] ); |
| 163 | $return['secure']['video'] = self::https( $return['video'] ); |
| 164 | |
| 165 | $poster_image = get_post_meta( $post_id, 'vimeo_poster_image', true ); |
| 166 | if ( ! empty( $poster_image ) ) { |
| 167 | $return['image'] = $poster_image; |
| 168 | $poster_url_parts = wp_parse_url( $poster_image ); |
| 169 | $return['secure']['image'] = 'https://secure-a.vimeocdn.com' . $poster_url_parts['path']; |
| 170 | } |
| 171 | } |
| 172 | ++$return['count']['video']; |
| 173 | break; |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | if ( ! empty( $extract['has']['embed'] ) ) { |
| 179 | foreach ( $extract['embed']['url'] as $embed ) { |
| 180 | if ( preg_match( '/((youtube|vimeo|dailymotion)\.com|youtu.be)/', $embed ) ) { |
| 181 | if ( 0 === $return['count']['video'] ) { |
| 182 | $return['type'] = 'video'; |
| 183 | $return['video'] = 'http://' . $embed; |
| 184 | $return['secure']['video'] = self::https( $return['video'] ); |
| 185 | if ( str_contains( $embed, 'youtube' ) ) { |
| 186 | $return['image'] = self::get_video_poster( 'youtube', jetpack_get_youtube_id( $return['video'] ) ); |
| 187 | $return['secure']['image'] = self::https( $return['image'] ); |
| 188 | } elseif ( str_contains( $embed, 'youtu.be' ) ) { |
| 189 | $youtube_id = jetpack_get_youtube_id( $return['video'] ); |
| 190 | $return['video'] = 'http://youtube.com/watch?v=' . $youtube_id . '&feature=youtu.be'; |
| 191 | $return['secure']['video'] = self::https( $return['video'] ); |
| 192 | $return['image'] = self::get_video_poster( 'youtube', jetpack_get_youtube_id( $return['video'] ) ); |
| 193 | $return['secure']['image'] = self::https( $return['image'] ); |
| 194 | } elseif ( str_contains( $embed, 'vimeo' ) ) { |
| 195 | $poster_image = get_post_meta( $post_id, 'vimeo_poster_image', true ); |
| 196 | if ( ! empty( $poster_image ) ) { |
| 197 | $return['image'] = $poster_image; |
| 198 | $poster_url_parts = wp_parse_url( $poster_image ); |
| 199 | $return['secure']['image'] = 'https://secure-a.vimeocdn.com' . $poster_url_parts['path']; |
| 200 | } |
| 201 | } elseif ( str_contains( $embed, 'dailymotion' ) ) { |
| 202 | $return['image'] = str_replace( 'dailymotion.com/video/', 'dailymotion.com/thumbnail/video/', $embed ); |
| 203 | $return['image'] = wp_parse_url( $return['image'], PHP_URL_SCHEME ) === null ? 'http://' . $return['image'] : $return['image']; |
| 204 | $return['secure']['image'] = self::https( $return['image'] ); |
| 205 | } |
| 206 | } |
| 207 | ++$return['count']['video']; |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | // Do we really want to make the video the primary focus of the post? |
| 213 | if ( 'video' === $return['type'] ) { |
| 214 | $content = wpautop( wp_strip_all_tags( $post->post_content ) ); |
| 215 | $paragraphs = explode( '</p>', $content ); |
| 216 | $number_of_paragraphs = 0; |
| 217 | |
| 218 | foreach ( $paragraphs as $i => $paragraph ) { |
| 219 | // Don't include blank lines as a paragraph. |
| 220 | if ( '' === trim( $paragraph ) ) { |
| 221 | unset( $paragraphs[ $i ] ); |
| 222 | continue; |
| 223 | } |
| 224 | ++$number_of_paragraphs; |
| 225 | } |
| 226 | |
| 227 | $number_of_paragraphs = $number_of_paragraphs - $return['count']['video']; // subtract amount for videos. |
| 228 | |
| 229 | // More than 2 paragraph? The video is not the primary focus so we can do some more analysis. |
| 230 | if ( $number_of_paragraphs > 2 ) { |
| 231 | $return['type'] = 'standard'; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | // If we don't have any prioritized embed... |
| 236 | if ( 'standard' === $return['type'] ) { |
| 237 | if ( ( ! empty( $extract['has']['gallery'] ) || ! empty( $extract['shortcode']['gallery']['count'] ) ) && ! empty( $extract['image'] ) ) { |
| 238 | // ... Then we prioritize galleries first (multiple images returned) |
| 239 | $return['type'] = 'gallery'; |
| 240 | $return['images'] = $extract['image']; |
| 241 | foreach ( $return['images'] as $image ) { |
| 242 | $return['secure']['images'][] = array( 'url' => self::ssl_img( $image['url'] ) ); |
| 243 | ++$return['count']['image']; |
| 244 | } |
| 245 | } elseif ( ! empty( $extract['has']['image'] ) ) { |
| 246 | // ... Or we try and select a single image that would make sense. |
| 247 | $content = wpautop( wp_strip_all_tags( $post->post_content ) ); |
| 248 | $paragraphs = explode( '</p>', $content ); |
| 249 | $number_of_paragraphs = 0; |
| 250 | |
| 251 | foreach ( $paragraphs as $i => $paragraph ) { |
| 252 | // Don't include 'actual' captions as a paragraph. |
| 253 | if ( str_contains( $paragraph, '[caption' ) ) { |
| 254 | unset( $paragraphs[ $i ] ); |
| 255 | continue; |
| 256 | } |
| 257 | // Don't include blank lines as a paragraph. |
| 258 | if ( '' === trim( $paragraph ) ) { |
| 259 | unset( $paragraphs[ $i ] ); |
| 260 | continue; |
| 261 | } |
| 262 | ++$number_of_paragraphs; |
| 263 | } |
| 264 | |
| 265 | $return['image'] = $extract['image'][0]['url']; |
| 266 | $return['secure']['image'] = self::ssl_img( $return['image'] ); |
| 267 | ++$return['count']['image']; |
| 268 | |
| 269 | if ( $number_of_paragraphs <= 2 && is_countable( $extract['image'] ) && 1 === count( $extract['image'] ) ) { |
| 270 | // If we have lots of text or images, let's not treat it as an image post, but return its first image. |
| 271 | $return['type'] = 'image'; |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | if ( $switched ) { |
| 277 | restore_current_blog(); |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Allow a theme or plugin to inspect and ultimately change the media summary. |
| 282 | * |
| 283 | * @since 4.4.0 |
| 284 | * |
| 285 | * @param array $data The calculated media summary data. |
| 286 | * @param int $post_id The id of the post this data applies to. |
| 287 | */ |
| 288 | $return = apply_filters( 'jetpack_media_summary_output', $return, $post_id ); |
| 289 | |
| 290 | self::$cache[ $cache_key ] = $return; |
| 291 | |
| 292 | return $return; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Converts http to https:// |
| 297 | * |
| 298 | * @param string $str URL. |
| 299 | * |
| 300 | * @return string URL. |
| 301 | */ |
| 302 | public static function https( $str ) { |
| 303 | return str_replace( 'http://', 'https://', $str ); |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * Returns a Photonized version of the URL. |
| 308 | * |
| 309 | * @param string $url URL. |
| 310 | * |
| 311 | * @return string URL. |
| 312 | */ |
| 313 | public static function ssl_img( $url ) { |
| 314 | if ( str_contains( $url, 'files.wordpress.com' ) ) { |
| 315 | return self::https( $url ); |
| 316 | } else { |
| 317 | return self::https( Image_CDN_Core::cdn_url( $url ) ); |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Get the video poster. |
| 323 | * |
| 324 | * @param string $type Video service. |
| 325 | * @param string $id Video ID for the service. |
| 326 | * |
| 327 | * @return string URL of image thumbnail for the video. |
| 328 | */ |
| 329 | public static function get_video_poster( $type, $id ) { |
| 330 | if ( 'videopress' === $type ) { |
| 331 | if ( function_exists( 'video_get_highest_resolution_image_url' ) ) { |
| 332 | return video_get_highest_resolution_image_url( $id ); |
| 333 | } elseif ( class_exists( 'VideoPress_Video' ) ) { |
| 334 | $video = new VideoPress_Video( $id ); |
| 335 | return $video->poster_frame_uri; |
| 336 | } |
| 337 | } elseif ( 'youtube' === $type ) { |
| 338 | return 'http://img.youtube.com/vi/' . $id . '/0.jpg'; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Clean text of shortcodes and tags. |
| 344 | * |
| 345 | * @param string $text Dirty text. |
| 346 | * |
| 347 | * @return string Clean text. |
| 348 | */ |
| 349 | public static function clean_text( $text ) { |
| 350 | return trim( |
| 351 | preg_replace( |
| 352 | '/[\s]+/', |
| 353 | ' ', |
| 354 | preg_replace( |
| 355 | '@https?://[\S]+@', |
| 356 | '', |
| 357 | strip_shortcodes( |
| 358 | wp_strip_all_tags( |
| 359 | $text |
| 360 | ) |
| 361 | ) |
| 362 | ) |
| 363 | ) |
| 364 | ); |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Retrieve an excerpt for the post summary. |
| 369 | * |
| 370 | * This function works around a suspected problem with Core. If resolved, this function should be simplified. |
| 371 | * |
| 372 | * @link https://github.com/Automattic/jetpack/pull/8510 |
| 373 | * @link https://core.trac.wordpress.org/ticket/42814 |
| 374 | * |
| 375 | * @param string $post_content The post's content. |
| 376 | * @param string $post_excerpt The post's excerpt. Empty if none was explicitly set. |
| 377 | * @param int $max_words Maximum number of words for the excerpt. Used on wp.com. Default 16. |
| 378 | * @param int $max_chars Maximum characters in the excerpt. Used on wp.com. Default 256. |
| 379 | * @param WP_Post $requested_post The post object. |
| 380 | * @return string Post excerpt. |
| 381 | **/ |
| 382 | public static function get_excerpt( $post_content, $post_excerpt, $max_words = 16, $max_chars = 256, $requested_post = null ) { |
| 383 | global $post; |
| 384 | $original_post = $post; // Saving the global for later use. |
| 385 | if ( empty( $post_excerpt ) && function_exists( 'wpcom_enhanced_excerpt_extract_excerpt' ) ) { |
| 386 | return self::clean_text( |
| 387 | wpcom_enhanced_excerpt_extract_excerpt( |
| 388 | array( |
| 389 | 'text' => $post_content, |
| 390 | 'excerpt_only' => true, |
| 391 | 'show_read_more' => false, |
| 392 | 'max_words' => $max_words, |
| 393 | 'max_chars' => $max_chars, |
| 394 | 'read_more_threshold' => 25, |
| 395 | ) |
| 396 | ) |
| 397 | ); |
| 398 | } elseif ( $requested_post instanceof WP_Post ) { |
| 399 | // @todo Refactor to not need to override the global. |
| 400 | // phpcs:ignore: WordPress.WP.GlobalVariablesOverride.Prohibited |
| 401 | $post = $requested_post; // setup_postdata does not set the global. |
| 402 | setup_postdata( $post ); |
| 403 | /** This filter is documented in core/src/wp-includes/post-template.php */ |
| 404 | $post_excerpt = apply_filters( 'get_the_excerpt', $post_excerpt, $post ); |
| 405 | // phpcs:ignore: WordPress.WP.GlobalVariablesOverride.Prohibited |
| 406 | $post = $original_post; // wp_reset_postdata uses the $post global. |
| 407 | wp_reset_postdata(); |
| 408 | return self::clean_text( $post_excerpt ); |
| 409 | } |
| 410 | return ''; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Split a string into an array of words. |
| 415 | * |
| 416 | * @param string $text Post content or excerpt. |
| 417 | * |
| 418 | * @return array Array of words. |
| 419 | */ |
| 420 | public static function split_content_in_words( $text ) { |
| 421 | $words = preg_split( '/[\s!?;,.]+/', $text, -1, PREG_SPLIT_NO_EMPTY ); |
| 422 | |
| 423 | // Return an empty array if the split above fails. |
| 424 | return $words ? $words : array(); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Get the word count. |
| 429 | * |
| 430 | * @param string $post_content Post content. |
| 431 | * |
| 432 | * @return int Word count. |
| 433 | */ |
| 434 | public static function get_word_count( $post_content ) { |
| 435 | return (int) count( self::split_content_in_words( self::clean_text( $post_content ) ) ); |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Get remainder word count (after the excerpt). |
| 440 | * |
| 441 | * @param string $post_content Post content. |
| 442 | * @param string $excerpt_content Excerpt content. |
| 443 | * |
| 444 | * @return int Number of words after the excerpt. |
| 445 | */ |
| 446 | public static function get_word_remaining_count( $post_content, $excerpt_content ) { |
| 447 | $content_word_count = count( self::split_content_in_words( self::clean_text( $post_content ) ) ); |
| 448 | $excerpt_word_count = count( self::split_content_in_words( self::clean_text( $excerpt_content ) ) ); |
| 449 | |
| 450 | return (int) $content_word_count - $excerpt_word_count; |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Counts the number of links in a post. |
| 455 | * |
| 456 | * @param string $post_content Post content. |
| 457 | * |
| 458 | * @return false|int Number of links. |
| 459 | */ |
| 460 | public static function get_link_count( $post_content ) { |
| 461 | return preg_match_all( '/\<a[\> ]/', $post_content, $matches ); |
| 462 | } |
| 463 | } |
| 464 |