download music from http://music.yandex.ru

Yandex Music Grub

<?php

class YandexMusic {

	public static function getAlbumInfo($url) {
		$req = file_get_contents($url);
		$data = preg_match('/var\s+Mu\s+=\s+(.+?);\s+<\/script>/is', $req, $matches);
		$data = json_decode($matches[1], true);
		return $data['pageData'];
	}

	public static function getPlaylistInfo($url) {
		$data = static::getAlbumInfo($url);
		return $data['playlist'];
	}

	public static function getTrackUrl($storage_dir) {
		$req = file_get_contents(sprintf('http://music.yandex.ru/api/v1.5/handlers/api-jsonp.jsx?requestId=2&nc=%d&action=getTrackSrc&p=download-info/%s/2.mp3', time(), $storage_dir));
		$data = json_decode($req, true);

		$hash = md5('XGRlBW9FXlekgbPrRHuSiA' . substr($data['path'], 1) . $data['s']);
		$storage_dir = explode('.', $storage_dir);

		$url = sprintf('http://%s/get-mp3/%s/%s?track-id=%s&from=service-10-track&similarities-experiment=default', $data['host'], $hash, $data['ts'] . $data['path'], $storage_dir[1]);
		return $url;
	}

	public static function download($url, $path) {
		$response = file_get_contents($url);
		file_put_contents($path, $response);
	}

	public static function downloadAlbum($url, $path) {
		$data = static::getAlbumInfo($url);
		$playlist_dir = rtrim($path, '\/') . '/' . $data['title'];
		if (!is_dir($playlist_dir))
			mkdir($playlist_dir);
		$count = count($data['volumes'][0]);
		$i = 1;
		foreach ($data['volumes'][0] as $track) {
			$mp3_path = $playlist_dir . '/' . str_pad($i, strlen((string)$count), '0', STR_PAD_LEFT) . '. ' . $track['artists'][0]['name'] . ' - ' . $track['title'] . '.mp3';
			$i++;
			static::download(static::getTrackUrl($track['storageDir']), $mp3_path);
			sleep(5);
		}
	}

	public static function downloadTrack($url, $path) {
		$data = static::getAlbumInfo($url);
		$playlist_dir = rtrim($path, '\/') . '/';
		if (!is_dir($playlist_dir))
			mkdir($playlist_dir);
		$track_id = substr($url, strrpos($url, '/') + 1);
		var_dump($data['volumes'][0]);
		foreach ($data['volumes'][0] as $track) {
			if ($track['id'] == $track_id) {
				$mp3_path = $playlist_dir . '/' . $track['artists'][0]['name'] . ' - ' . $track['title'] . '.mp3';
				static::download(static::getTrackUrl($track['storageDir']), $mp3_path);
				return true;
			}
		}
	}

}