#!/usr/bin/env php
<?php
require __DIR__ . '/../sig.php';

define('SIG_REFRESH_START', microtime(true));

function sig_log(string $str) {
    $time = round((microtime(true) - SIG_REFRESH_START) * 1000);
    printf('[%d] %s%s', $time, $str, PHP_EOL);
}

function sig_web_get($url) {
    $res = '';
    $req = curl_init($url);
    try {
        curl_setopt_array($req, [
            CURLOPT_AUTOREFERER => true,
            CURLOPT_FAILONERROR => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HEADER => false,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TCP_FASTOPEN => true,
            CURLOPT_CONNECTTIMEOUT => 5,
            CURLOPT_MAXREDIRS => 5,
            CURLOPT_PROTOCOLS => CURLPROTO_HTTPS | CURLPROTO_HTTP,
            CURLOPT_TIMEOUT => 10,
            CURLOPT_USERAGENT => 'flash.moe signature',
        ]);
        $res = curl_exec($req);
    } finally {
        curl_close($req);
    }

    return $res;
}

sig_log('Starting Now Playing refresh...');

$npRaw = json_decode(sig_web_get(NP_URL));

sig_log('Downloaded NP info.');

if(empty($npRaw[0]->nowplaying)) {
    sig_log('Not currently listening to anything.');

    if(is_file(NP_INFO)) {
        sig_log('Deleting NP_INFO file...');
        unlink(NP_INFO);
    }

    if(is_file(NP_COVER_IMG)) {
        sig_log('Deleting NP_COVER_IMG file...');
        unlink(NP_COVER_IMG);
    }
} else {
    sig_log('Currently listening to something!');

    if(is_file(NP_INFO)) {
        sig_log('Fetching previous URL from current NP_INFO file...');
        $npInfo = unserialize(file_get_contents(NP_INFO));
        $npLastUrl = $npInfo->url;
    } else $npLastUrl = '';

    $npInfo = new stdClass;
    $npInfo->v = 1;
    $npInfo->title = $npRaw[0]->name;
    $npInfo->artist = $npRaw[0]->artist->name;
    $npInfo->url = $npRaw[0]->url;

    $sameAsLast = $npLastUrl === $npInfo->url;
    if(!$sameAsLast) {
        sig_log('Writing new NP_INFO file...');
        file_put_contents(NP_INFO, serialize($npInfo));
    }

    $hasCover = basename($npRaw[0]->images->large) !== NP_COVER_DEFAULT;

    if($hasCover) {
        sig_log('Current song has a cover image.');

        if($sameAsLast && is_file(NP_COVER_IMG)) {
            sig_log('Song URL is identical to previous run, leaving existing cover image.');
        } else {
            sig_log('Downloading cover image...');
            $npCover = sig_web_get($npRaw[0]->images->large);
            sig_log('Writing cover image...');
            file_put_contents(NP_COVER_IMG, $npCover);
        }
    } else {
        sig_log('Current song does not have a cover image.');

        if(is_file(NP_COVER_IMG)) {
            sig_log('Deleting NP_COVER_IMG file...');
            unlink(NP_COVER_IMG);
        }
    }
}

sig_log('Done!');