<?php
function err($s) {
	error_log($s);
}
if (empty($_GET['token'])) {
	err("Must specify ?token with your ListenBrainz token.");
	exit;
}
if (empty($_GET['user'])) {
	err("Must specify ?user with your Plex username.");
	exit;
}

$plex = json_decode($_POST['payload'], TRUE);
if (!in_array($plex['event'], explode(' ', 'media.scrobble media.play media.resume'))) {
	exit;
}
if (mb_strtolower($plex['Account']['title']) != mb_strtolower($_GET['user'])) {
	exit;
}

$DIR = dirname(readlink(__FILE__));
$listenbrainz = array(
	'listen_type' => (($plex['event'] == 'media.scrobble') ? 'single' : 'playing_now'),
	'payload' => array(array(
		'track_metadata' => array(
			'artist_name' => $plex['Metadata']['originalTitle'] ?? $plex['Metadata']['grandparentTitle'],
			'track_name' => $plex['Metadata']['title'],
			'release_name' => $plex['Metadata']['parentTitle'],
			'additional_info' => array(
				'media_player' => 'Plex',
				'submission_client' => 'https://jfr.im/git/plex-to-listenbrainz.git/',
				'submission_client_version' => `git --git-dir $DIR describe --long --tags HEAD`,
				'tracknumber' => $plex['Metadata']['index'],
			),
		),
	)),
);
if ($plex['event'] == 'media.scrobble') {
	$listenbrainz['payload'][0]['listened_at'] = time();
	$listenbrainz['listen_type'] = 'single';
} else {
	$listenbrainz['listen_type'] = 'playing_now';
}

if (!empty($plex['Metadata']['attribution'])) {
	$listenbrainz['payload'][0]['track_metadata']['additional_info']['music_service'] = implode('.', array_reverse(explode('.', $plex['Metadata']['attribution'])));
}

$lb_payload = json_encode($listenbrainz);

$ch = curl_init('https://api.listenbrainz.org/1/submit-listens');
curl_setopt_array($ch, array(
	CURLOPT_HTTPHEADER => array(
		'Content-Type: application/json',
		'Authorization: Token ' . $_GET['token'],
	),
	CURLOPT_RETURNTRANSFER => TRUE,
	CURLOPT_POSTFIELDS => json_encode($listenbrainz),
));
$resp = curl_exec($ch);
if ($resp === FALSE) {
	err("Failed to reach ListenBrainz: curl " . curl_errno($ch) . ": " . curl_error($ch));
	exit;
}
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($status != 200) {
	err("Error response from ListenBrainz: HTTP $status: $resp");
	exit;
}

file_put_contents('/home/jrunyon/plexlog', var_export($status, true) . ';' . var_export($resp, true), FILE_APPEND);