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<?php
define('TWITCH_LIMIT', 10); // The default limit
define('TWITCH_BROADCASTS', 'false'); // The default flag for broadcasts
class TwitchApiBridge extends BridgeAbstract{
// 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->update = "2016-08-09";
$this->parameters["Get channel without limit"] =
'[
{
"name" : "Channel",
"identifier" : "channel"
},
{
"name" : "Broadcasts",
"identifier" : "broadcasts",
"type" : "list",
"values" : [
{
"name" : "Show broadcasts",
"value" : "true"
},
{
"name" : "Show highlights",
"value" : "false"
}
]
}
]';
$this->parameters["Get channel with limit"] =
'[
{
"name" : "Channel",
"identifier" : "channel"
},
{
"name" : "Limit",
"identifier" : "limit",
"type" : "number"
},
{
"name" : "Broadcasts",
"identifier" : "broadcasts",
"type" : "list",
"values" : [
{
"name" : "Show broadcasts",
"value" : "true"
},
{
"name" : "Show highlights",
"value" : "false"
}
]
}
]';
}
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."
* 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'
)
);
$context = stream_context_create($opts);
$channel = '';
$limit = TWITCH_LIMIT;
$broadcasts = TWITCH_BROADCASTS;
$requests = 1;
if(isset($param['channel'])) {
$channel = $param['channel'];
} else {
$this->returnError('You must specify a valid channel name! Received: &channel=' . $param['channel'], 400);
}
$this->channel = $channel;
if(isset($param['limit'])) {
try {
$limit = (int)$param['limit'];
} catch (Exception $e){
$this->returnError('The limit you specified is not valid! Received: &limit=' . $param['limit'] . ' Expected: &limit=<num> where <num> is any integer number.', 400);
}
} else {
$limit = TWITCH_LIMIT;
}
// The Twitch API allows a limit between 1 .. 100. Therefore any value below must be set to 1, any greater must result in multiple requests.
if($limit < 1) { $limit = 1; }
if($limit > 100) {
$requests = (int)($limit / 100);
if($limit % 100 != 0) { $requests++; }
}
if(isset($param['broadcasts']) && ($param['broadcasts'] == 'true' || $param['broadcasts'] == 'false')) {
$broadcasts = $param['broadcasts'];
} else {
$this->returnError('The value for broadcasts you specified is not valid! Received: &broadcasts=' . $param['broadcasts'] . ' Expected: &broadcasts=false or &broadcasts=true', 400);
}
// Build the initial request, see also: https://github.com/justintv/Twitch-API/blob/master/v3_resources/videos.md#get-channelschannelvideos
$request = '';
if($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=' . $broadcasts;
}
/* Finally we're ready to request data from the API. Each response provides information for the next request. */
for($i = 0; $i < $requests; $i++) {
$response = file_get_contents($request, false, $context);
if($response == false) {
$this->returnError('Request failed! Check if the channel name is valid!', 400);
}
$data = json_decode($response);
foreach($data->videos as $video) {
$item = new \Item();
$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>';
$this->items[] = $item;
// Stop once the number of requested items is reached
if(count($this->items) >= $limit) {
break;
}
}
// Get next request (if available)
if(isset($data->_links->next)) {
$request = $data->_links->next;
} else {
break;
}
}
}
public function getName(){
return (!empty($this->channel) ? $this->channel . ' - ' : '') . 'Twitch API Bridge';
}
public function getURI(){
return 'https://www.twitch.tv';
}
public function getCacheDuration(){
return 10800; // 3 hours
}
}
?>
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