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80 lines
2.7 KiB
PHP
80 lines
2.7 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileContributor: Carl Schwan
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OC\Preview\Storage;
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use LogicException;
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use OC;
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use OC\Files\SimpleFS\SimpleFile;
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use OC\Preview\Db\Preview;
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use OCP\IConfig;
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class LocalPreviewStorage implements IPreviewStorage {
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private const PREVIEW_DIRECTORY = '__preview';
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private readonly string $rootFolder;
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public function __construct(
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private readonly IConfig $config,
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) {
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$this->rootFolder = $this->config->getSystemValue('datadirectory', OC::$SERVERROOT . '/data');
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}
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public function writePreview(Preview $preview, $stream): false|int {
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$previewPath = $this->constructPath($preview);
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$this->createParentFiles($previewPath);
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$file = @fopen($this->rootFolder . '/' . self::PREVIEW_DIRECTORY . '/' . $previewPath, 'w');
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return fwrite($file, $stream);
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}
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public function readPreview(Preview $preview) {
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$previewPath = $this->constructPath($preview);
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return @fopen($this->rootFolder . '/' . self::PREVIEW_DIRECTORY . '/' . $previewPath, 'r');
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}
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public function deletePreview(Preview $preview) {
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$previewPath = $this->constructPath($preview);
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@unlink($this->rootFolder . '/' . self::PREVIEW_DIRECTORY . '/' . $previewPath);
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}
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private function constructPath(Preview $preview): string {
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return implode('/', str_split(substr(md5((string)$preview->getFileId()), 0, 7))) . '/' . $preview->getFileId() . '/' . $preview->getName();
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}
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private function createParentFiles($path) {
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['basename' => $basename, 'dirname' => $dirname] = pathinfo($path);
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$currentDir = $this->rootFolder . '/' . self::PREVIEW_DIRECTORY;
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mkdir($currentDir);
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foreach (explode('/', $dirname) as $suffix) {
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$currentDir .= "/$suffix";
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mkdir($currentDir);
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}
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}
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public function migratePreview(Preview $preview, SimpleFile $file): void {
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$instanceId = $this->config->getSystemValueString('instanceid');
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$previewPath = $this->constructPath($preview);
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$sourcePath = $this->rootFolder . '/appdata_' . $instanceId . '/preview/' . $previewPath;
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$destinationPath = $this->rootFolder . '/' . self::PREVIEW_DIRECTORY . '/' . $previewPath;
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if (!file_exists($sourcePath)) {
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// legacy flat directory
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$sourcePath = $this->rootFolder . '/appdata_' . $instanceId . '/preview/' . $preview->getFileId() . '/' . $preview->getName();
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}
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if (file_exists($destinationPath)) {
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return;
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}
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$this->createParentFiles($previewPath);
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echo 'Copying ' . $sourcePath . ' to ' . $destinationPath . PHP_EOL;
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$ok = rename($sourcePath, $destinationPath);
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if (!$ok) {
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throw new LogicException('Failed to copy ' . $sourcePath . ' to ' . $destinationPath);
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}
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}
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}
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