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<?php
/**
* @package Internals
* @since 1.8.0
* @version 1.8.0
*/
// Avoid direct calls to this file.
if ( ! class_exists( 'WPSEO_Video_Sitemap' ) ) {
header( 'Status: 403 Forbidden' );
header( 'HTTP/1.1 403 Forbidden' );
exit();
}
/**
*****************************************************************
* TED Talks Video SEO Details
*
* Full API is in limited beta and at this moment (2014-07-22), the page to apply for an API-key is 404-ing.
*
* @link http://developer.ted.com/API_Docs
* @link http://developer.ted.com/io-docs
*
* JSON response format [2014/7/22]:
* {
* "type":"video",
* "version":"1.0",
* "html":"<iframe src=\"http:\/\/embed.ted.com\/talks\/jill_bolte_taylor_s_powerful_stroke_of_insight.html\" width=\"560\" height=\"315\" frameborder=\"0\" scrolling=\"no\" webkitAllowFullScreen mozallowfullscreen allowFullScreen><\/iframe>",
* "width":560,
* "height":315,
* "title":"Jill Bolte Taylor: My stroke of insight",
* "url":"http:\/\/www.ted.com\/talks\/jill_bolte_taylor_s_powerful_stroke_of_insight",
* "author_name":"Jill Bolte Taylor",
* "author_url":"http:\/\/www.ted.com\/speakers\/jill_bolte_taylor",
* "provider_name":"TED",
* "provider_url":"http:\/\/ted.com",
* "thumbnail_url":"http:\/\/images.ted.com\/images\/ted\/e86e4fdeedbff174a70b8e80f6c3ebe12b9e9cfa_480x360.jpg?lang=en",
* "thumbnail_width":"480",
* "thumbnail_height":"360"
* }
*/
if ( ! class_exists( 'WPSEO_Video_Details_Ted' ) ) {
/**
* Class WPSEO_Video_Details_Ted
*/
class WPSEO_Video_Details_Ted extends WPSEO_Video_Details_Oembed {
/**
* Regular expression to retrieve a video ID from a known video URL.
*
* @var string
*/
protected $id_regex = '`[/\.]ted\.com/talks/([a-z0-9_-]+)(?:$|\.html|[/#\?])`i';
/**
* Regular expression to retrieve a numeric video ID from a known video short URL.
*
* @var string
*/
protected $short_id_regex = '`[/\.]ted\.com/talks/view/id/(.+?)(?:$|/)`i';
/**
* Sprintf template to create a URL from an ID.
*
* @var string
*/
protected $url_template = 'http://www.ted.com/talks/%s.html';
/**
* Sprintf template to create a URL from an ID.
*
* @var string
*/
protected $short_id_url_template = 'http://www.ted.com/talks/view/id/%s';
/**
* Information on the remote URL to use for retrieving the video details.
*
* @var array
*/
protected $remote_url = array(
'pattern' => 'http://www.ted.com/talks/oembed.json?url=%s',
'replace_key' => 'url',
'response_type' => 'json',
);
/**
* Deal with potentially wrong ids from short id url format and instantiate the class
*
* @param array $vid The video array with all the data.
* @param array $old_vid The video array with all the data of the previous "fetch", if available.
*
* @return \WPSEO_Video_Details_Ted
*/
public function __construct( $vid, $old_vid = array() ) {
// Check for wrongly set short id as id.
if ( ! empty( $vid['id'] ) && preg_match( '`^[0-9]+$`', $vid['id'] ) ) {
$vid['short_id'] = $vid['id'];
unset( $vid['id'] );
}
parent::__construct( $vid, $old_vid );
}
/**
* Retrieve the video id or short id from a known video url based on a regex match
*
* @uses WPSEO_Video_Details_Ted::$id_regex
* @uses WPSEO_Video_Details_Ted::$short_id_regex
*
* @param int $match_nr The captured parenthesized sub-pattern to use from matches. Defaults to 1.
*
* @return void
*/
protected function determine_video_id_from_url( $match_nr = 1 ) {
$this->determine_id_from_url( $this->vid['url'] );
}
/**
* Retrieve the video id or short id from a known video url based on a regex match
*
* @uses WPSEO_Video_Details_Ted::$id_regex
* @uses WPSEO_Video_Details_Ted::$short_id_regex
*
* @param string $url The video url.
* @param int $match_nr The captured parenthesized sub-pattern to use from matches. Defaults to 1.
*
* @return void
*/
private function determine_id_from_url( $url, $match_nr = 1 ) {
if ( is_string( $url ) && $url !== '' ) {
// Check for short id form first as the normal regex would match on the 'view' bit.
if ( preg_match( $this->short_id_regex, $url, $match ) ) {
$this->vid['short_id'] = $match[ $match_nr ];
}
elseif ( preg_match( $this->id_regex, $url, $match ) ) {
$this->vid['id'] = $match[ $match_nr ];
}
}
}
/**
* Create a video url based on a known video id and url template
*
* @uses WPSEO_Video_Details_Ted::$url_template
* @uses WPSEO_Video_Details_Ted::$short_id_url_template
*
* @return void
*/
protected function determine_video_url_from_id() {
if ( ! empty( $this->vid['id'] ) && $this->url_template !== '' ) {
$this->vid['url'] = sprintf( $this->url_template, $this->vid['id'] );
}
elseif ( ! empty( $this->vid['short_id'] ) && $this->short_id_url_template !== '' ) {
$this->vid['url'] = sprintf( $this->short_id_url_template, $this->vid['short_id'] );
}
}
/**
* Set the player location
*
* @todo - verify if this is the correct setting for content_loc
*/
protected function set_content_loc() {
if ( ! empty( $this->decoded_response->url ) ) {
$this->vid['content_loc'] = $this->decoded_response->url;
}
}
/**
* Set the video id
*/
protected function set_id() {
if ( ! empty( $this->decoded_response->url ) ) {
$this->determine_id_from_url( $this->decoded_response->url );
}
}
/**
* Set the player location
*/
protected function set_player_loc() {
if ( ! empty( $this->vid['id'] ) ) {
$this->vid['player_loc'] = 'http://embed.ted.com/talks/' . rawurlencode( $this->vid['id'] ) . '.html';
}
}
} /* End of class */
} /* End of class-exists wrapper */