koel/app/Services/LastfmService.php
2021-06-05 12:47:56 +02:00

329 lines
9.1 KiB
PHP

<?php
namespace App\Services;
use App\Models\User;
use App\Values\LastfmLoveTrackParameters;
use GuzzleHttp\Promise\Promise;
use GuzzleHttp\Promise\Utils;
use Illuminate\Support\Collection;
use Throwable;
class LastfmService extends AbstractApiClient implements ApiConsumerInterface
{
/**
* Override the key param, since, again, Last.fm wants to be different.
*/
protected string $keyParam = 'api_key';
/**
* Determine if our application is using Last.fm.
*/
public function used(): bool
{
return (bool) $this->getKey();
}
/**
* Determine if Last.fm integration is enabled.
*/
public function enabled(): bool
{
return $this->getKey() && $this->getSecret();
}
/** @return array<mixed>|null */
public function getArtistInformation(string $name): ?array
{
if (!$this->enabled()) {
return null;
}
$name = urlencode($name);
try {
return $this->cache->remember(
md5("lastfm_artist_$name"),
now()->addWeek(),
function () use ($name): ?array {
$response = $this->get("?method=artist.getInfo&autocorrect=1&artist=$name&format=json");
if (!$response || !isset($response->artist)) {
return null;
}
return $this->buildArtistInformation($response->artist);
}
);
} catch (Throwable $e) {
$this->logger->error($e);
return null;
}
}
/**
* Build a Koel-usable array of artist information using the data from Last.fm.
*
* @param mixed $data
*
* @return array<mixed>
*/
private function buildArtistInformation($data): array
{
return [
'url' => $data->url,
'image' => count($data->image) > 3 ? $data->image[3]->{'#text'} : $data->image[0]->{'#text'},
'bio' => [
'summary' => isset($data->bio) ? $this->formatText($data->bio->summary) : '',
'full' => isset($data->bio) ? $this->formatText($data->bio->content) : '',
],
];
}
/** @return array<mixed>|null */
public function getAlbumInformation(string $albumName, string $artistName): ?array
{
if (!$this->enabled()) {
return null;
}
$albumName = urlencode($albumName);
$artistName = urlencode($artistName);
try {
$cacheKey = md5("lastfm_album_{$albumName}_{$artistName}");
return $this->cache->remember(
$cacheKey,
now()->addWeek(),
function () use ($albumName, $artistName): ?array {
$response = $this
->get("?method=album.getInfo&autocorrect=1&album=$albumName&artist=$artistName&format=json");
if (!$response || !isset($response->album)) {
return null;
}
return $this->buildAlbumInformation($response->album);
}
);
} catch (Throwable $e) {
$this->logger->error($e);
return null;
}
}
/**
* Build a Koel-usable array of album information using the data from Last.fm.
*
* @param mixed $data
*
* @return array<mixed>
*/
private function buildAlbumInformation($data): array
{
return [
'url' => $data->url,
'image' => count($data->image) > 3 ? $data->image[3]->{'#text'} : $data->image[0]->{'#text'},
'wiki' => [
'summary' => isset($data->wiki) ? $this->formatText($data->wiki->summary) : '',
'full' => isset($data->wiki) ? $this->formatText($data->wiki->content) : '',
],
'tracks' => array_map(static fn ($track): array => [
'title' => $track->name,
'length' => (int) $track->duration,
'url' => $track->url,
], isset($data->tracks) ? $data->tracks->track : []),
];
}
/**
* Get Last.fm's session key for the authenticated user using a token.
*
* @param string $token The token after successfully connecting to Last.fm
*
* @see http://www.last.fm/api/webauth#4
*/
public function getSessionKey(string $token): ?string
{
$query = $this->buildAuthCallParams([
'method' => 'auth.getSession',
'token' => $token,
], true);
try {
return $this->get("/?$query&format=json", [], false)->session->key;
} catch (Throwable $e) {
$this->logger->error($e);
return null;
}
}
public function scrobble(
string $artistName,
string $trackName,
$timestamp,
string $albumName,
string $sessionKey
): void {
$params = [
'artist' => $artistName,
'track' => $trackName,
'timestamp' => $timestamp,
'sk' => $sessionKey,
'method' => 'track.scrobble',
];
if ($albumName) {
$params['album'] = $albumName;
}
try {
$this->post('/', $this->buildAuthCallParams($params), false);
} catch (Throwable $e) {
$this->logger->error($e);
}
}
public function toggleLoveTrack(LastfmLoveTrackParameters $params, string $sessionKey, bool $love = true): void
{
try {
$this->post('/', $this->buildAuthCallParams([
'track' => $params->getTrackName(),
'artist' => $params->getArtistName(),
'sk' => $sessionKey,
'method' => $love ? 'track.love' : 'track.unlove',
]), false);
} catch (Throwable $e) {
$this->logger->error($e);
}
}
/**
* @param Collection|array<LastfmLoveTrackParameters> $parameterCollection
*/
public function batchToggleLoveTracks(Collection $parameterCollection, string $sessionKey, bool $love = true): void
{
$promises = $parameterCollection->map(
fn (LastfmLoveTrackParameters $params): Promise => $this->postAsync('/', $this->buildAuthCallParams([
'track' => $params->getTrackName(),
'artist' => $params->getArtistName(),
'sk' => $sessionKey,
'method' => $love ? 'track.love' : 'track.unlove',
]), false)
);
try {
Utils::unwrap($promises);
} catch (Throwable $e) {
$this->logger->error($e);
}
}
/**
* @param int|float $duration Duration of the track, in seconds
*/
public function updateNowPlaying(
string $artistName,
string $trackName,
string $albumName,
$duration,
string $sessionKey
): void {
$params = [
'artist' => $artistName,
'track' => $trackName,
'duration' => $duration,
'sk' => $sessionKey,
'method' => 'track.updateNowPlaying',
];
if ($albumName) {
$params['album'] = $albumName;
}
try {
$this->post('/', $this->buildAuthCallParams($params), false);
} catch (Throwable $e) {
$this->logger->error($e);
}
}
/**
* Build the parameters to use for _authenticated_ Last.fm API calls.
* Such calls require:
* - The API key (api_key)
* - The API signature (api_sig).
*
* @see http://www.last.fm/api/webauth#5
*
* @param array $params The array of parameters
* @param bool $toString Whether to turn the array into a query string
*
* @return array<mixed>|string
*/
public function buildAuthCallParams(array $params, bool $toString = false) // @phpcs:ignore
{
$params['api_key'] = $this->getKey();
ksort($params);
// Generate the API signature.
// @link http://www.last.fm/api/webauth#6
$str = '';
foreach ($params as $name => $value) {
$str .= $name . $value;
}
$str .= $this->getSecret();
$params['api_sig'] = md5($str);
if (!$toString) {
return $params;
}
$query = '';
foreach ($params as $key => $value) {
$query .= "$key=$value&";
}
return rtrim($query, '&');
}
/**
* Correctly format a value returned by Last.fm.
*/
protected function formatText(?string $value): string
{
if (!$value) {
return '';
}
return trim(str_replace('Read more on Last.fm', '', nl2br(strip_tags(html_entity_decode($value)))));
}
public function getKey(): ?string
{
return config('koel.lastfm.key');
}
public function getEndpoint(): ?string
{
return config('koel.lastfm.endpoint');
}
public function getSecret(): ?string
{
return config('koel.lastfm.secret');
}
public function setUserSessionKey(User $user, ?string $sessionKey): void
{
$user->preferences->lastFmSessionKey = $sessionKey;
$user->save();
}
}