<h2>File Contents: /home/planet5/www/haylingdentist.co.uk/wp-content/plugins/jetpack/_inc/lib/class.media-summary.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/haylingdentist.co.uk/wp-content/plugins/jetpack/_inc/lib/class.media-summary.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
 * Provides media summary of a post.
 *
 * @package automattic/jetpack
 */

use Automattic\Jetpack\Image_CDN\Image_CDN_Core;

/**
 * Class Jetpack_Media_Summary
 *
 * Priority: embed [video] &gt; gallery &gt; image &gt; text
 */
class Jetpack_Media_Summary {

	/**
	 * Media cache.
	 *
	 * @var array
	 */
	private static $cache = array();

	/**
	 * Get media summary for a post.
	 *
	 * @param int   $post_id Post ID.
	 * @param int   $blog_id Blog ID, if applicable.
	 * @param array $args {
	 *      Optional. An array of arguments.
	 *      @type int $max_words Maximum number of words.
	 *      @type int $max_chars Maximum number of characters.
	 * }
	 *
	 * @return array|mixed|void
	 */
	public static function get( $post_id, $blog_id = 0, $args = array() ) {
		// @todo: Use type hinting in the line above when at PHP 7.0+.
		$post_id = (int) $post_id;
		$blog_id = (int) $blog_id;

		$defaults = array(
			&#039;max_words&#039; =&gt; 16,
			&#039;max_chars&#039; =&gt; 256,
		);
		$args     = wp_parse_args( $args, $defaults );

		$switched = false;
		if ( ! empty( $blog_id ) &amp;&amp; get_current_blog_id() !== $blog_id &amp;&amp; function_exists( &#039;switch_to_blog&#039; ) ) {
			switch_to_blog( $blog_id );
			$switched = true;
		} else {
			$blog_id = get_current_blog_id();
		}

		$cache_key = &quot;{$blog_id}_{$post_id}_{$args[&#039;max_words&#039;]}_{$args[&#039;max_chars&#039;]}&quot;;
		if ( isset( self::$cache[ $cache_key ] ) ) {
			if ( $switched ) {
				restore_current_blog();
			}
			return self::$cache[ $cache_key ];
		}

		if ( ! class_exists( &#039;Jetpack_Media_Meta_Extractor&#039; ) ) {
			require_once JETPACK__PLUGIN_DIR . &#039;_inc/lib/class.media-extractor.php&#039;;
		}

		$post      = get_post( $post_id );
		$permalink = get_permalink( $post_id );

		$return = array(
			&#039;type&#039;       =&gt; &#039;standard&#039;,
			&#039;permalink&#039;  =&gt; $permalink,
			&#039;image&#039;      =&gt; &#039;&#039;,
			&#039;excerpt&#039;    =&gt; &#039;&#039;,
			&#039;word_count&#039; =&gt; 0,
			&#039;secure&#039;     =&gt; array(
				&#039;image&#039; =&gt; &#039;&#039;,
			),
			&#039;count&#039;      =&gt; array(
				&#039;image&#039; =&gt; 0,
				&#039;video&#039; =&gt; 0,
				&#039;word&#039;  =&gt; 0,
				&#039;link&#039;  =&gt; 0,
			),
		);

		if ( $post instanceof WP_Post &amp;&amp; empty( $post-&gt;post_password ) ) {
			$return[&#039;excerpt&#039;]                 = self::get_excerpt( $post-&gt;post_content, $post-&gt;post_excerpt, $args[&#039;max_words&#039;], $args[&#039;max_chars&#039;], $post );
			$return[&#039;count&#039;][&#039;word&#039;]           = self::get_word_count( $post-&gt;post_content );
			$return[&#039;count&#039;][&#039;word_remaining&#039;] = self::get_word_remaining_count( $post-&gt;post_content, $return[&#039;excerpt&#039;] );
			$return[&#039;count&#039;][&#039;link&#039;]           = self::get_link_count( $post-&gt;post_content );
		}

		$extract = Jetpack_Media_Meta_Extractor::extract( $blog_id, $post_id, Jetpack_Media_Meta_Extractor::ALL );

		if ( empty( $extract[&#039;has&#039;] ) ) {
			if ( $switched ) {
				restore_current_blog();
			}
			self::$cache[ $cache_key ] = $return;
			return $return;
		}

		// Prioritize [some] video embeds.
		if ( ! empty( $extract[&#039;has&#039;][&#039;shortcode&#039;] ) ) {
			foreach ( $extract[&#039;shortcode&#039;] as $type =&gt; $data ) {
				switch ( $type ) {
					case &#039;videopress&#039;:
					case &#039;wpvideo&#039;:
						if ( 0 === $return[&#039;count&#039;][&#039;video&#039;] ) {
							// If there is no id on the video, then let&#039;s just skip this.
							if ( ! isset( $data[&#039;id&#039;][0] ) ) {
								break;
							}

							$guid       = $data[&#039;id&#039;][0];
							$video_info = videopress_get_video_details( $guid );

							// Only add the video tags if the guid returns a valid videopress object.
							if ( $video_info instanceof stdClass ) {
								// Continue early if we can&#039;t find a Video slug.
								if ( empty( $video_info-&gt;files-&gt;std-&gt;mp4 ) ) {
									break;
								}

								$url = sprintf(
									&#039;https://videos.files.wordpress.com/%1$s/%2$s&#039;,
									$guid,
									$video_info-&gt;files-&gt;std-&gt;mp4
								);

								$thumbnail = $video_info-&gt;poster;
								if ( ! empty( $thumbnail ) ) {
									$return[&#039;image&#039;]           = $thumbnail;
									$return[&#039;secure&#039;][&#039;image&#039;] = $thumbnail;
								}

								$return[&#039;type&#039;]            = &#039;video&#039;;
								$return[&#039;video&#039;]           = esc_url_raw( $url );
								$return[&#039;video_type&#039;]      = &#039;video/mp4&#039;;
								$return[&#039;secure&#039;][&#039;video&#039;] = $return[&#039;video&#039;];
							}
						}
						++$return[&#039;count&#039;][&#039;video&#039;];
						break;
					case &#039;youtube&#039;:
						if ( 0 === $return[&#039;count&#039;][&#039;video&#039;] ) {
							$return[&#039;type&#039;]            = &#039;video&#039;;
							$return[&#039;video&#039;]           = esc_url_raw( &#039;http://www.youtube.com/watch?feature=player_embedded&amp;v=&#039; . $extract[&#039;shortcode&#039;][&#039;youtube&#039;][&#039;id&#039;][0] );
							$return[&#039;image&#039;]           = self::get_video_poster( &#039;youtube&#039;, $extract[&#039;shortcode&#039;][&#039;youtube&#039;][&#039;id&#039;][0] );
							$return[&#039;secure&#039;][&#039;video&#039;] = self::https( $return[&#039;video&#039;] );
							$return[&#039;secure&#039;][&#039;image&#039;] = self::https( $return[&#039;image&#039;] );
						}
						++$return[&#039;count&#039;][&#039;video&#039;];
						break;
					case &#039;vimeo&#039;:
						if ( 0 === $return[&#039;count&#039;][&#039;video&#039;] ) {
							$return[&#039;type&#039;]            = &#039;video&#039;;
							$return[&#039;video&#039;]           = esc_url_raw( &#039;http://vimeo.com/&#039; . $extract[&#039;shortcode&#039;][&#039;vimeo&#039;][&#039;id&#039;][0] );
							$return[&#039;secure&#039;][&#039;video&#039;] = self::https( $return[&#039;video&#039;] );

							$poster_image = get_post_meta( $post_id, &#039;vimeo_poster_image&#039;, true );
							if ( ! empty( $poster_image ) ) {
								$return[&#039;image&#039;]           = $poster_image;
								$poster_url_parts          = wp_parse_url( $poster_image );
								$return[&#039;secure&#039;][&#039;image&#039;] = &#039;https://secure-a.vimeocdn.com&#039; . $poster_url_parts[&#039;path&#039;];
							}
						}
						++$return[&#039;count&#039;][&#039;video&#039;];
						break;
				}
			}
		}

		if ( ! empty( $extract[&#039;has&#039;][&#039;embed&#039;] ) ) {
			foreach ( $extract[&#039;embed&#039;][&#039;url&#039;] as $embed ) {
				if ( preg_match( &#039;/((youtube|vimeo|dailymotion)\.com|youtu.be)/&#039;, $embed ) ) {
					if ( 0 === $return[&#039;count&#039;][&#039;video&#039;] ) {
						$return[&#039;type&#039;]            = &#039;video&#039;;
						$return[&#039;video&#039;]           = &#039;http://&#039; . $embed;
						$return[&#039;secure&#039;][&#039;video&#039;] = self::https( $return[&#039;video&#039;] );
						if ( false !== strpos( $embed, &#039;youtube&#039; ) ) {
							$return[&#039;image&#039;]           = self::get_video_poster( &#039;youtube&#039;, jetpack_get_youtube_id( $return[&#039;video&#039;] ) );
							$return[&#039;secure&#039;][&#039;image&#039;] = self::https( $return[&#039;image&#039;] );
						} elseif ( false !== strpos( $embed, &#039;youtu.be&#039; ) ) {
							$youtube_id                = jetpack_get_youtube_id( $return[&#039;video&#039;] );
							$return[&#039;video&#039;]           = &#039;http://youtube.com/watch?v=&#039; . $youtube_id . &#039;&amp;feature=youtu.be&#039;;
							$return[&#039;secure&#039;][&#039;video&#039;] = self::https( $return[&#039;video&#039;] );
							$return[&#039;image&#039;]           = self::get_video_poster( &#039;youtube&#039;, jetpack_get_youtube_id( $return[&#039;video&#039;] ) );
							$return[&#039;secure&#039;][&#039;image&#039;] = self::https( $return[&#039;image&#039;] );
						} elseif ( false !== strpos( $embed, &#039;vimeo&#039; ) ) {
							$poster_image = get_post_meta( $post_id, &#039;vimeo_poster_image&#039;, true );
							if ( ! empty( $poster_image ) ) {
								$return[&#039;image&#039;]           = $poster_image;
								$poster_url_parts          = wp_parse_url( $poster_image );
								$return[&#039;secure&#039;][&#039;image&#039;] = &#039;https://secure-a.vimeocdn.com&#039; . $poster_url_parts[&#039;path&#039;];
							}
						} elseif ( false !== strpos( $embed, &#039;dailymotion&#039; ) ) {
							$return[&#039;image&#039;]           = str_replace( &#039;dailymotion.com/video/&#039;, &#039;dailymotion.com/thumbnail/video/&#039;, $embed );
							$return[&#039;image&#039;]           = wp_parse_url( $return[&#039;image&#039;], PHP_URL_SCHEME ) === null ? &#039;http://&#039; . $return[&#039;image&#039;] : $return[&#039;image&#039;];
							$return[&#039;secure&#039;][&#039;image&#039;] = self::https( $return[&#039;image&#039;] );
						}
					}
					++$return[&#039;count&#039;][&#039;video&#039;];
				}
			}
		}

		// Do we really want to make the video the primary focus of the post?
		if ( &#039;video&#039; === $return[&#039;type&#039;] ) {
			$content              = wpautop( wp_strip_all_tags( $post-&gt;post_content ) );
			$paragraphs           = explode( &#039;&lt;/p&gt;&#039;, $content );
			$number_of_paragraphs = 0;

			foreach ( $paragraphs as $i =&gt; $paragraph ) {
				// Don&#039;t include blank lines as a paragraph.
				if ( &#039;&#039; === trim( $paragraph ) ) {
					unset( $paragraphs[ $i ] );
					continue;
				}
				++$number_of_paragraphs;
			}

			$number_of_paragraphs = $number_of_paragraphs - $return[&#039;count&#039;][&#039;video&#039;]; // subtract amount for videos.

			// More than 2 paragraph? The video is not the primary focus so we can do some more analysis.
			if ( $number_of_paragraphs &gt; 2 ) {
				$return[&#039;type&#039;] = &#039;standard&#039;;
			}
		}

		// If we don&#039;t have any prioritized embed...
		if ( &#039;standard&#039; === $return[&#039;type&#039;] ) {
			if ( ( ! empty( $extract[&#039;has&#039;][&#039;gallery&#039;] ) || ! empty( $extract[&#039;shortcode&#039;][&#039;gallery&#039;][&#039;count&#039;] ) ) &amp;&amp; ! empty( $extract[&#039;image&#039;] ) ) {
				// ... Then we prioritize galleries first (multiple images returned)
				$return[&#039;type&#039;]   = &#039;gallery&#039;;
				$return[&#039;images&#039;] = $extract[&#039;image&#039;];
				foreach ( $return[&#039;images&#039;] as $image ) {
					$return[&#039;secure&#039;][&#039;images&#039;][] = array( &#039;url&#039; =&gt; self::ssl_img( $image[&#039;url&#039;] ) );
					++$return[&#039;count&#039;][&#039;image&#039;];
				}
			} elseif ( ! empty( $extract[&#039;has&#039;][&#039;image&#039;] ) ) {
				// ... Or we try and select a single image that would make sense.
				$content              = wpautop( wp_strip_all_tags( $post-&gt;post_content ) );
				$paragraphs           = explode( &#039;&lt;/p&gt;&#039;, $content );
				$number_of_paragraphs = 0;

				foreach ( $paragraphs as $i =&gt; $paragraph ) {
					// Don&#039;t include &#039;actual&#039; captions as a paragraph.
					if ( false !== strpos( $paragraph, &#039;[caption&#039; ) ) {
						unset( $paragraphs[ $i ] );
						continue;
					}
					// Don&#039;t include blank lines as a paragraph.
					if ( &#039;&#039; === trim( $paragraph ) ) {
						unset( $paragraphs[ $i ] );
						continue;
					}
					++$number_of_paragraphs;
				}

				$return[&#039;image&#039;]           = $extract[&#039;image&#039;][0][&#039;url&#039;];
				$return[&#039;secure&#039;][&#039;image&#039;] = self::ssl_img( $return[&#039;image&#039;] );
				++$return[&#039;count&#039;][&#039;image&#039;];

				if ( $number_of_paragraphs &lt;= 2 &amp;&amp; is_countable( $extract[&#039;image&#039;] ) &amp;&amp; 1 === count( $extract[&#039;image&#039;] ) ) {
					// If we have lots of text or images, let&#039;s not treat it as an image post, but return its first image.
					$return[&#039;type&#039;] = &#039;image&#039;;
				}
			}
		}

		if ( $switched ) {
			restore_current_blog();
		}

		/**
		 * Allow a theme or plugin to inspect and ultimately change the media summary.
		 *
		 * @since 4.4.0
		 *
		 * @param array $data The calculated media summary data.
		 * @param int $post_id The id of the post this data applies to.
		 */
		$return = apply_filters( &#039;jetpack_media_summary_output&#039;, $return, $post_id );

		self::$cache[ $cache_key ] = $return;

		return $return;
	}

	/**
	 * Converts http to https://
	 *
	 * @param string $str URL.
	 *
	 * @return string URL.
	 */
	public static function https( $str ) {
		return str_replace( &#039;http://&#039;, &#039;https://&#039;, $str );
	}

	/**
	 * Returns a Photonized version of the URL.
	 *
	 * @param string $url URL.
	 *
	 * @return string URL.
	 */
	public static function ssl_img( $url ) {
		if ( false !== strpos( $url, &#039;files.wordpress.com&#039; ) ) {
			return self::https( $url );
		} else {
			return self::https( Image_CDN_Core::cdn_url( $url ) );
		}
	}

	/**
	 * Get the video poster.
	 *
	 * @param string $type Video service.
	 * @param string $id Video ID for the service.
	 *
	 * @return string URL of image thumbnail for the video.
	 */
	public static function get_video_poster( $type, $id ) {
		if ( &#039;videopress&#039; === $type ) {
			if ( function_exists( &#039;video_get_highest_resolution_image_url&#039; ) ) {
				return video_get_highest_resolution_image_url( $id );
			} elseif ( class_exists( &#039;VideoPress_Video&#039; ) ) {
				$video = new VideoPress_Video( $id );
				return $video-&gt;poster_frame_uri;
			}
		} elseif ( &#039;youtube&#039; === $type ) {
			return &#039;http://img.youtube.com/vi/&#039; . $id . &#039;/0.jpg&#039;;
		}
	}

	/**
	 * Clean text of shortcodes and tags.
	 *
	 * @param string $text Dirty text.
	 *
	 * @return string Clean text.
	 */
	public static function clean_text( $text ) {
		return trim(
			preg_replace(
				&#039;/[\s]+/&#039;,
				&#039; &#039;,
				preg_replace(
					&#039;@https?://[\S]+@&#039;,
					&#039;&#039;,
					strip_shortcodes(
						wp_strip_all_tags(
							$text
						)
					)
				)
			)
		);
	}

	/**
	 * Retrieve an excerpt for the post summary.
	 *
	 * This function works around a suspected problem with Core. If resolved, this function should be simplified.
	 *
	 * @link https://github.com/Automattic/jetpack/pull/8510
	 * @link https://core.trac.wordpress.org/ticket/42814
	 *
	 * @param  string  $post_content The post&#039;s content.
	 * @param  string  $post_excerpt The post&#039;s excerpt. Empty if none was explicitly set.
	 * @param  int     $max_words Maximum number of words for the excerpt. Used on wp.com. Default 16.
	 * @param  int     $max_chars Maximum characters in the excerpt. Used on wp.com. Default 256.
	 * @param  WP_Post $requested_post The post object.
	 * @return string Post excerpt.
	 **/
	public static function get_excerpt( $post_content, $post_excerpt, $max_words = 16, $max_chars = 256, $requested_post = null ) {
		global $post;
		$original_post = $post; // Saving the global for later use.
		if ( empty( $post_excerpt ) &amp;&amp; function_exists( &#039;wpcom_enhanced_excerpt_extract_excerpt&#039; ) ) {
			return self::clean_text(
				wpcom_enhanced_excerpt_extract_excerpt(
					array(
						&#039;text&#039;                =&gt; $post_content,
						&#039;excerpt_only&#039;        =&gt; true,
						&#039;show_read_more&#039;      =&gt; false,
						&#039;max_words&#039;           =&gt; $max_words,
						&#039;max_chars&#039;           =&gt; $max_chars,
						&#039;read_more_threshold&#039; =&gt; 25,
					)
				)
			);
		} elseif ( $requested_post instanceof WP_Post ) {
			// @todo Refactor to not need to override the global.
			// phpcs:ignore: WordPress.WP.GlobalVariablesOverride.Prohibited
			$post = $requested_post; // setup_postdata does not set the global.
			setup_postdata( $post );
			/** This filter is documented in core/src/wp-includes/post-template.php */
			$post_excerpt = apply_filters( &#039;get_the_excerpt&#039;, $post_excerpt, $post );
			// phpcs:ignore: WordPress.WP.GlobalVariablesOverride.Prohibited
			$post = $original_post; // wp_reset_postdata uses the $post global.
			wp_reset_postdata();
			return self::clean_text( $post_excerpt );
		}
		return &#039;&#039;;
	}

	/**
	 * Split a string into an array of words.
	 *
	 * @param string $text Post content or excerpt.
	 *
	 * @return array Array of words.
	 */
	public static function split_content_in_words( $text ) {
		$words = preg_split( &#039;/[\s!?;,.]+/&#039;, $text, -1, PREG_SPLIT_NO_EMPTY );

		// Return an empty array if the split above fails.
		return $words ? $words : array();
	}

	/**
	 * Get the word count.
	 *
	 * @param string $post_content Post content.
	 *
	 * @return int Word count.
	 */
	public static function get_word_count( $post_content ) {
		return (int) count( self::split_content_in_words( self::clean_text( $post_content ) ) );
	}

	/**
	 * Get remainder word count (after the excerpt).
	 *
	 * @param string $post_content Post content.
	 * @param string $excerpt_content Excerpt content.
	 *
	 * @return int Number of words after the excerpt.
	 */
	public static function get_word_remaining_count( $post_content, $excerpt_content ) {
		$content_word_count = count( self::split_content_in_words( self::clean_text( $post_content ) ) );
		$excerpt_word_count = count( self::split_content_in_words( self::clean_text( $excerpt_content ) ) );

		return (int) $content_word_count - $excerpt_word_count;
	}

	/**
	 * Counts the number of links in a post.
	 *
	 * @param string $post_content Post content.
	 *
	 * @return false|int Number of links.
	 */
	public static function get_link_count( $post_content ) {
		return preg_match_all( &#039;/\&lt;a[\&gt; ]/&#039;, $post_content, $matches );
	}
}
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