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LogMANOriginal 2017-04-30 19:59:54 +00:00 committed by GitHub
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bridges/YoutubeApiBridge.php Normal file
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<?php
/**
* RssBridgeYouTubeApi
* Returns the newest videos
*
* @name YouTube Data API Bridge
* @homepage https://www.youtube.com/
* @description Returns the newest videos by channel name or playlist id using the YouTube Data API
* @maintainer logmanoriginal
* @update 2015-07-13
* @use1(k="YouTube Data API key", u="Channel name", i="Number of feed items")
* @use3(k="YouTube Data API key", p="Playlist id")
*/
class YoutubeApiBridge extends BridgeAbstract{
private $request;
public function collectData(array $param){
$count = 0; // Number of feed items to return
$api = new StdClass(); // Cache for the YouTube Data API
// Load the API key
if (isset($param['k']) && $param['k'] != "") {
$api->key = $param['k'];
} else {
$this->returnError('You must specify a valid API key (?k=...)', 400);
}
// Load number of feed items (count)
if (isset($param['u']) && isset($param['i']) && is_numeric($param['i'])) {
$count = (int)$param['i'];
}
else if (isset($param['p'])) {
// not required
} else {
$this->returnError('You must specify the number of items to return (?i=...)', 400);
}
// Retrieve information by channel name
if (isset($param['u'])) {
$this->request = $param['u'];
// We have to acquire the channel id first.
// For some reason an error from the API results in a false from file_get_contents, so we've to handle that.
$api->channels = file_get_contents('https://www.googleapis.com/youtube/v3/channels?part=contentDetails&forUsername=' . urlencode($this->request) . '&key=' . $api->key);
if($api->channels == false) {
$this->returnError('Request failed! Check channel name and API key!', 400);
}
$channels = json_decode($api->channels);
// Calculate number of requests (max. 50 items per request possible)
$req_count = (int)($count / 50);
if($count % 50 <> 0) {
$req_count++;
}
// Each page is identified by a page token, the first page has none.
$pageToken = '';
// Go through all pages
for($i = 1; $i <= $req_count; $i++){
$api->playlistItems = file_get_contents('https://www.googleapis.com/youtube/v3/playlistItems?part=snippet%2CcontentDetails%2Cstatus&maxResults=50&playlistId=' . $channels->items[0]->contentDetails->relatedPlaylists->uploads . '&pageToken=' . $pageToken . '&key=' . $api->key);
$playlistItems = json_decode($api->playlistItems);
// Get the next token
$pageToken = $playlistItems->nextPageToken;
foreach($playlistItems->items as $element) {
$item = new \Item();
$item->id = $element->contentDetails->videoId;
$item->uri = 'https://www.youtube.com/watch?v='.$item->id;
$item->thumbnailUri = $element->snippet->thumbnails->{'default'}->url;
$item->title = htmlspecialchars($element->snippet->title);
$item->timestamp = strtotime($element->snippet->publishedAt);
$item->content = '<a href="' . $item->uri . '"><img src="' . $item->thumbnailUri . '" /></a><br><a href="' . $item->uri . '">' . $item->title . '</a>';
$this->items[] = $item;
// Stop once the number of requested items is reached
if(count($this->items) >= $count) {
break;
}
}
}
}
// Retrieve information by playlist
else if (isset($param['p'])) {
$this->request = $param['p'];
// Reading playlist information is similar to how it works on a channel. We don't need a channel id though.
// For a playlist we always return all items. YouTube has a limit of 200 items per playlist, so the maximum is 4 calls to the API.
$pageToken = '';
do {
$api->playlistItems = file_get_contents('https://www.googleapis.com/youtube/v3/playlistItems?part=snippet%2CcontentDetails%2Cstatus&maxResults=50&playlistId=' . $this->request . '&pageToken=' . $pageToken . '&key=' . $api->key);
$playlistItems = json_decode($api->playlistItems);
foreach($playlistItems->items as $element) {
$item = new \Item();
$item->id = $element->contentDetails->videoId;
$item->uri = 'https://www.youtube.com/watch?v='.$item->id;
$item->thumbnailUri = $element->snippet->thumbnails->{'default'}->url;
$item->title = htmlspecialchars($element->snippet->title);
$item->timestamp = strtotime($element->snippet->publishedAt);
$item->content = '<a href="' . $item->uri . '"><img src="' . $item->thumbnailUri . '" /></a><br><a href="' . $item->uri . '">' . $item->title . '</a>';
$this->items[] = $item;
}
if (isset($playlistItems->nextPageToken)) {
$pageToken = $playlistItems->nextPageToken;
} else {
$pageToken = '';
}
} while ($pageToken != '');
}
}
public function getName(){
return (!empty($this->request) ? $this->request .' - ' : '') . 'YouTube API Bridge';
}
public function getURI(){
return 'https://www.youtube.com/';
}
public function getCacheDuration(){
return 10800; // 3 hours
}
}
?>