78 lines
1.9 KiB
PHP
78 lines
1.9 KiB
PHP
<?php
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namespace App\Services;
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use Carbon\Carbon;
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use getID3;
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class Mp3MetadataService
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{
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/**
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* Extract ID3 and audio metadata from an MP3 file on disk.
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*
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* @return array{
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* title: ?string,
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* artist: ?string,
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* album: ?string,
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* duration_seconds: ?int,
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* recorded_at: ?string
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* }
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*/
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public function extract(string $absolutePath): array
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{
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$analyzer = new getID3;
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$info = $analyzer->analyze($absolutePath);
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$tags = [];
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if (isset($info['tags']['id3v2'])) {
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$tags = $info['tags']['id3v2'];
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} elseif (isset($info['tags']['id3v1'])) {
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$tags = $info['tags']['id3v1'];
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}
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$title = $this->firstTag($tags, 'title');
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$artist = $this->firstTag($tags, 'artist');
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$album = $this->firstTag($tags, 'album');
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$year = $this->firstTag($tags, 'year') ?? $this->firstTag($tags, 'recording_time');
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$duration = isset($info['playtime_seconds'])
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? (int) round((float) $info['playtime_seconds'])
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: null;
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$recordedAt = null;
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if (filled($year) && preg_match('/^\d{4}/', $year)) {
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try {
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$recordedAt = Carbon::parse($year)->toDateTimeString();
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} catch (\Throwable) {
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$recordedAt = null;
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}
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}
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return [
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'title' => $title,
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'artist' => $artist,
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'album' => $album,
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'duration_seconds' => $duration,
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'recorded_at' => $recordedAt,
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];
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}
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/**
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* @param array<string, mixed> $tags
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*/
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private function firstTag(array $tags, string $key): ?string
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{
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if (! isset($tags[$key])) {
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return null;
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}
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$value = $tags[$key];
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if (is_array($value)) {
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$value = $value[0] ?? null;
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}
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return filled($value) ? (string) $value : null;
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}
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}
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