A simple script to parse Beat Saber metadata

bs-meta-parser

#!/usr/bin/env php
<?php

 /*
 |--------------------------------------------------------------------------
 | Beat Saber Metadata Parser
 |--------------------------------------------------------------------------
 |
 | This application will parse the metadata from downloaded compressed
 | Beat Saber song files.
 |
 | Usage: ./bs-meta-parser [path/to/song.zip]
 |
 */

$zip = new ZipArchive();

if ($zip->open($argv[1])) {
    $content = $zip->getFromName('info.dat') ?: $zip->getFromName('Info.dat') ?: null;

    if ($content === null) {
        echo 'Failed to find `info.dat` or `Info.dat` in the provided ZIP archive';

        exit(1);
    }

    $song = json_decode($content, true, 512, JSON_THROW_ON_ERROR);

    echo "Name: {$song['_songName']} {$song['_songSubName']}".PHP_EOL;
    echo "Artist: {$song['_songAuthorName']}".PHP_EOL;
    echo "BPM: {$song['_beatsPerMinute']}".PHP_EOL;
    echo "Level Author: {$song['_levelAuthorName']}".PHP_EOL;

    $difficulties = [];
    foreach ($song['_difficultyBeatmapSets'] as $difficulty) {
        foreach ($difficulty['_difficultyBeatmaps'] as $version) {
            $difficulties[] = "{$version['_difficulty']} ({$difficulty['_beatmapCharacteristicName']})";
        }
    }

    echo 'Difficulties: '.implode(', ', $difficulties).PHP_EOL;
}