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<?php |
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namespace App\Models; |
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use App\Facades\Download; |
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use Exception; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Facades\Log; |
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use RuntimeException; |
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use ZipArchive; |
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class SongZipArchive |
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{ |
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/** |
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* @var ZipArchive |
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*/ |
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private $archive; |
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/** |
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* Path to the zip archive. |
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* |
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* @var string |
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*/ |
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private $path; |
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/** |
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* Names of the files in the archive |
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* Format: [file-name.mp3' => currentFileIndex]. |
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* |
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* @var array |
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*/ |
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private $fileNames = []; |
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public function __construct(string $path = '') |
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{ |
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$this->path = $path ?: self::generateRandomArchivePath(); |
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$this->archive = new ZipArchive(); |
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if ($this->archive->open($this->path, ZipArchive::CREATE) !== true) { |
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throw new RuntimeException('Cannot create zip file.'); |
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} |
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} |
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/** |
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* Add multiple songs into the archive. |
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*/ |
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public function addSongs(Collection $songs): self |
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{ |
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$songs->each([$this, 'addSong']); |
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return $this; |
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} |
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/** |
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* Add a single song into the archive. |
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*/ |
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public function addSong(Song $song): self |
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{ |
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try { |
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$path = Download::fromSong($song); |
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$this->archive->addFile($path, $this->generateZipContentFileNameFromPath($path)); |
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} catch (Exception $e) { |
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Log::error($e); |
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} |
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return $this; |
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} |
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/** |
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* Finish (close) the archive. |
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*/ |
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public function finish(): self |
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{ |
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$this->archive->close(); |
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return $this; |
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} |
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public function getPath(): string |
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{ |
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return $this->path; |
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} |
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/** |
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* We add all files into the zip archive as a flat structure. |
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* As a result, there can be duplicate file names. |
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* This method makes sure each file name is unique in the zip archive. |
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*/ |
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private function generateZipContentFileNameFromPath(string $path): string |
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{ |
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$name = basename($path); |
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if (array_key_exists($name, $this->fileNames)) { |
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$this->fileNames[$name]++; |
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$parts = explode('.', $name); |
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$ext = $parts[count($parts) - 1]; |
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$parts[count($parts) - 1] = $this->fileNames[$name].".$ext"; |
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$name = implode('.', $parts); |
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} else { |
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$this->fileNames[$name] = 1; |
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} |
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return $name; |
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} |
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private static function generateRandomArchivePath(): string |
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{ |
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// We use system's temp dir instead of storage_path() here, so that the generated files |
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// can be cleaned up automatically after server reboot. |
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return sprintf('%s%skoel-download-%s.zip', sys_get_temp_dir(), DIRECTORY_SEPARATOR, uniqid()); |
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} |
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public function getArchive(): ZipArchive |
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{ |
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return $this->archive; |
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} |
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} |
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phanan /
koel
