rss-bridge/bridges/SoundcloudBridge.php

239 lines
5.8 KiB
PHP

<?php
class SoundCloudBridge extends BridgeAbstract {
const MAINTAINER = 'kranack, Roliga';
const NAME = 'Soundcloud Bridge';
const URI = 'https://soundcloud.com/';
const CACHE_TIMEOUT = 600; // 10min
const DESCRIPTION = 'Returns 10 newest music from user profile';
const PARAMETERS = array(array(
'u' => array(
'name' => 'username',
'required' => true
),
't' => array(
'name' => 'Content',
'type' => 'list',
'defaultValue' => 'tracks',
'values' => array(
'All (except likes)' => 'all',
'Tracks' => 'tracks',
'Albums' => 'albums',
'Playlists' => 'playlists',
'Reposts' => 'reposts',
'Likes' => 'likes'
)
)
));
private $apiUrl = 'https://api-v2.soundcloud.com/';
// Without url=http, player URL returns a 404
private $playerUrl = 'https://w.soundcloud.com/player/?url=http';
private $widgetUrl = 'https://widget.sndcdn.com/';
private $feedTitle = null;
private $feedIcon = null;
private $clientIDCache = null;
private $clientIdRegex = '/client_id.*?"(.+?)"/';
private $widgetRegex = '/widget-.+?\.js/';
public function collectData() {
$res = $this->getUser($this->getInput('u'))
or returnServerError('No results for this query');
$this->feedTitle = $res->username;
$this->feedIcon = $res->avatar_url;
$apiItems = $this->getUserItems($res->id, $this->getInput('t'))
or returnServerError('No results for ' . $this->getInput('t'));
$hasTrackObject = array('all', 'reposts', 'likes');
foreach ($apiItems->collection as $index => $apiItem) {
if (in_array($this->getInput('t'), $hasTrackObject) === true) {
$apiItem = $apiItem->track;
}
$item = array();
$item['author'] = $apiItem->user->username;
$item['title'] = $apiItem->user->username . ' - ' . $apiItem->title;
$item['timestamp'] = strtotime($apiItem->created_at);
$description = nl2br($apiItem->description);
$item['content'] = <<<HTML
<p>{$description}</p>
HTML;
if (isset($apiItem->tracks) && $apiItem->track_count > 0) {
$list = $this->getTrackList($apiItem->tracks);
$item['content'] .= <<<HTML
<p><strong>Tracks ({$apiItem->track_count})</strong></p>
{$list}
HTML;
}
$item['enclosures'][] = $apiItem->artwork_url;
$item['id'] = $apiItem->permalink_url;
$item['uri'] = $apiItem->permalink_url;
$this->items[] = $item;
if (count($this->items) >= 10) {
break;
}
}
}
public function getIcon(){
if ($this->feedIcon) {
return $this->feedIcon;
}
return parent::getIcon();
}
public function getURI() {
if ($this->getInput('u')) {
return self::URI . $this->getInput('u') . '/' . $this->getInput('t');
}
return parent::getURI();
}
public function getName() {
if($this->feedTitle) {
return $this->feedTitle . ' - ' . ucfirst($this->getInput('t')) . ' - ' . self::NAME;
}
return parent::getName();
}
private function initClientIDCache(){
if($this->clientIDCache !== null)
return;
$cacheFac = new CacheFactory();
$cacheFac->setWorkingDir(PATH_LIB_CACHES);
$this->clientIDCache = $cacheFac->create(Configuration::getConfig('cache', 'type'));
$this->clientIDCache->setScope(get_called_class());
$this->clientIDCache->setKey(array('client_id'));
}
private function getClientID(){
$this->initClientIDCache();
$clientID = $this->clientIDCache->loadData();
if($clientID == null) {
return $this->refreshClientID();
} else {
return $clientID;
}
}
private function refreshClientID(){
$this->initClientIDCache();
$playerHTML = getContents($this->playerUrl)
or returnServerError('Unable to get player page.');
// Extract widget JS filenames from player page
if(preg_match_all($this->widgetRegex, $playerHTML, $matches) == false)
returnServerError('Unable to find widget JS URL.');
$clientID = '';
// Loop widget js files and extract client ID
foreach ($matches[0] as $widgetFile) {
$widgetURL = $this->widgetUrl . $widgetFile;
$widgetJS = getContents($widgetURL)
or returnServerError('Unable to get widget JS page.');
if(preg_match($this->clientIdRegex, $widgetJS, $matches)) {
$clientID = $matches[1];
$this->clientIDCache->saveData($clientID);
return $clientID;
}
}
if (empty($clientID)) {
returnServerError('Unable to find client ID.');
}
}
private function buildApiUrl($endpoint, $parameters) {
return $this->apiUrl
. $endpoint
. '?'
. http_build_query($parameters);
}
private function getUser($username) {
$parameters = array('url' => self::URI . $username);
return $this->getApi('resolve', $parameters);
}
private function getUserItems($userId, $type) {
$parameters = array('limit' => 10);
$endpoint = 'users/' . $userId . '/' . $type;
if ($type === 'playlists') {
$endpoint = 'users/' . $userId . '/playlists_without_albums';
}
if ($type === 'all') {
$endpoint = 'stream/users/' . $userId;
}
if ($type === 'reposts') {
$endpoint = 'stream/users/' . $userId . '/' . $type;
}
return $this->getApi($endpoint, $parameters);
}
private function getApi($endpoint, $parameters) {
$parameters['client_id'] = $this->getClientID();
$url = $this->buildApiUrl($endpoint, $parameters);
try {
return json_decode(getContents($url));
} catch (Exception $e) {
// Retry once with refreshed client ID
$parameters['client_id'] = $this->refreshClientID();
$url = $this->buildApiUrl($endpoint, $parameters);
return json_decode(getContents($url));
}
}
private function getTrackList($tracks) {
$trackids = '';
foreach ($tracks as $track) {
$trackids .= $track->id . ',';
}
$apiItems = $this->getApi(
'tracks', array('ids' => $trackids)
);
$list = '';
foreach($apiItems as $track) {
$list .= <<<HTML
<li>{$track->user->username} — <a href="{$track->permalink_url}">{$track->title}</a></li>
HTML;
}
$html = <<<HTML
<ul>{$list}</ul>
HTML;
return $html;
}
}