rss-bridge/bridges/TwitchApiBridge.php

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<?php
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define('TWITCH_LIMIT', 10); // The default limit
define('TWITCH_BROADCASTS', 'false'); // The default flag for broadcasts
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class TwitchApiBridge extends BridgeAbstract{
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// for use in the getName function!
private $channel;
public function loadMetadatas() {
$this->maintainer = "logmanoriginal";
$this->name = "Twitch API Bridge";
$this->uri = "http://www.twitch.tv";
$this->description = "Returns the newest broadcasts or highlights by channel name using the Twitch API (v3)";
$this->parameters["Get channel without limit"] = array(
'channel'=>array(
'name'=>'Channel',
'required'=>true
),
'broadcasts'=>array(
'name'=>'Broadcasts',
'type'=>'list',
'values'=>array(
'Show broadcasts'=>'true',
'Show highlights'=>'false'
)
)
);
$this->parameters["Get channel with limit"] = array(
'channel'=>array(
'name'=>'Channel',
'required'=>true
),
'limit'=>array(
'name'=>'Limit',
'type'=>'number'
),
'broadcasts'=>array(
'name'=>'Broadcasts',
'type'=>'list',
'values'=>array(
'Show broadcasts'=>'true',
'Show highlights'=>'false'
)
)
);
}
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public function collectData(array $param){
/* In accordance with API description:
* "When specifying a version for a request to the Twitch API, set the Accept HTTP header to the API version you prefer."
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* Now we prefer v3 right now and need to build the context options. */
$opts = array('https' =>
array(
'method' => 'GET',
'header' => 'Accept: application/vnd.twitchtv.v3+json'
)
);
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$context = stream_context_create($opts);
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$channel = '';
$limit = TWITCH_LIMIT;
$broadcasts = TWITCH_BROADCASTS;
$requests = 1;
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if(isset($param['channel'])) {
$channel = $param['channel'];
} else {
$this->returnClientError('You must specify a valid channel name! Received: &channel=' . $param['channel']);
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}
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$this->channel = $channel;
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if(isset($param['limit'])) {
try {
$limit = (int)$param['limit'];
} catch (Exception $e){
$this->returnClientError('The limit you specified is not valid! Received: &limit=' . $param['limit'] . ' Expected: &limit=<num> where <num> is any integer number.');
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}
} else {
$limit = TWITCH_LIMIT;
}
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// The Twitch API allows a limit between 1 .. 100. Therefore any value below must be set to 1, any greater must result in multiple requests.
if($limit < 1) { $limit = 1; }
if($limit > 100) {
$requests = (int)($limit / 100);
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if($limit % 100 != 0) { $requests++; }
}
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if(isset($param['broadcasts']) && ($param['broadcasts'] == 'true' || $param['broadcasts'] == 'false')) {
$broadcasts = $param['broadcasts'];
} else {
$this->returnClientError('The value for broadcasts you specified is not valid! Received: &broadcasts=' . $param['broadcasts'] . ' Expected: &broadcasts=false or &broadcasts=true');
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}
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// Build the initial request, see also: https://github.com/justintv/Twitch-API/blob/master/v3_resources/videos.md#get-channelschannelvideos
$request = '';
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if($requests == 1) {
$request = 'https://api.twitch.tv/kraken/channels/' . $channel . '/videos?limit=' . $limit . '&broadcasts=' . $broadcasts;
} else {
$request = 'https://api.twitch.tv/kraken/channels/' . $channel . '/videos?limit=100&broadcasts=' . $broadcasts;
}
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/* Finally we're ready to request data from the API. Each response provides information for the next request. */
for($i = 0; $i < $requests; $i++) {
$response = $this->getSimpleHTMLDOM($request, false, $context);
if($response == false) {
$this->returnServerError('Request failed! Check if the channel name is valid!');
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}
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$data = json_decode($response);
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foreach($data->videos as $video) {
$item = array();
$item['id'] = $video->_id;
$item['uri'] = $video->url;
$item['title'] = htmlspecialchars($video->title);
$item['timestamp'] = strtotime($video->recorded_at);
$item['content'] = '<a href="' . $item['uri'] . '"><img src="' . $video->preview . '" /></a><br><a href="' . $item['uri'] . '">' . $item['title'] . '</a>';
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$this->items[] = $item;
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// Stop once the number of requested items is reached
if(count($this->items) >= $limit) {
break;
}
}
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// Get next request (if available)
if(isset($data->_links->next)) {
$request = $data->_links->next;
} else {
break;
}
}
}
public function getName(){
return (!empty($this->channel) ? $this->channel . ' - ' : '') . 'Twitch API Bridge';
}
public function getCacheDuration(){
return 10800; // 3 hours
}
}
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?>