mirror of
https://github.com/Terranom674/Piwigo_Bratonien_Tools.git
synced 2026-09-19 16:24:33 +00:00
Precache WebDAV previews during sync
This commit is contained in:
Terranom674
179
runtime/lib/precache-webdav-previews.php
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179
runtime/lib/precache-webdav-previews.php
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#!/usr/bin/env php
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<?php
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if (PHP_SAPI !== 'cli')
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{
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fwrite(STDERR, "CLI only\n");
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exit(1);
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}
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function fail_preview($message)
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{
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throw new RuntimeException($message);
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}
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function quote_webdav_path($path)
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{
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$parts = array_values(array_filter(explode('/', trim((string)$path, '/')), 'strlen'));
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return implode('/', array_map('rawurlencode', $parts));
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}
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function fetch_remote_blob($url, $user, $password)
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{
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$ch = curl_init($url);
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curl_setopt_array($ch, array(
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_FOLLOWLOCATION => false,
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CURLOPT_CONNECTTIMEOUT => 10,
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CURLOPT_TIMEOUT => 120,
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CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
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CURLOPT_USERPWD => $user.':'.$password,
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CURLOPT_FAILONERROR => false,
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CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.5.19',
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));
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$body = curl_exec($ch);
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$errno = curl_errno($ch);
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$error = curl_error($ch);
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$http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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if ($body === false || $errno !== 0) fail_preview('WebDAV-Bild konnte nicht geladen werden: '.$error);
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if ($http < 200 || $http >= 300) fail_preview('WebDAV-Bild antwortete mit HTTP '.$http.'.');
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return (string)$body;
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}
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function write_preview($blob, $target)
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{
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$dir = dirname($target);
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if (!is_dir($dir) && !mkdir($dir, 0755, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');
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if (class_exists('Imagick'))
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{
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$image = new Imagick();
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$image->readImageBlob($blob);
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if (method_exists($image, 'autoOrientImage')) @$image->autoOrientImage();
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$image->setIteratorIndex(0);
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$image->thumbnailImage(1600, 1600, true, true);
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$image->setImageFormat('webp');
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$image->setImageCompressionQuality(85);
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if (!$image->writeImage($target)) fail_preview('Imagick konnte das Preview nicht schreiben.');
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$image->clear();
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$image->destroy();
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@chmod($target, 0644);
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return;
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}
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if (function_exists('imagecreatefromstring') && function_exists('imagewebp'))
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{
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$source = @imagecreatefromstring($blob);
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if (!$source) fail_preview('GD konnte das Bild nicht dekodieren.');
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$width = imagesx($source);
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$height = imagesy($source);
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if ($width < 1 || $height < 1)
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{
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imagedestroy($source);
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fail_preview('Bildabmessungen sind ungültig.');
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}
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$scale = min(1, 1600 / $width, 1600 / $height);
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$target_width = max(1, (int)round($width * $scale));
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$target_height = max(1, (int)round($height * $scale));
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$preview = imagecreatetruecolor($target_width, $target_height);
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imagealphablending($preview, false);
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imagesavealpha($preview, true);
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$transparent = imagecolorallocatealpha($preview, 0, 0, 0, 127);
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imagefilledrectangle($preview, 0, 0, $target_width, $target_height, $transparent);
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imagecopyresampled($preview, $source, 0, 0, 0, 0, $target_width, $target_height, $width, $height);
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if (!imagewebp($preview, $target, 85))
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{
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imagedestroy($preview);
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imagedestroy($source);
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fail_preview('GD konnte das Preview nicht schreiben.');
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}
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imagedestroy($preview);
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imagedestroy($source);
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@chmod($target, 0644);
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return;
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}
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fail_preview('Weder Imagick noch GD/WebP ist für die Preview-Erzeugung verfügbar.');
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}
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try
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{
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$options = getopt('', array('mapping:', 'base-url:', 'user:', 'password-file:', 'cache-dir:'));
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$mapping_file = (string)($options['mapping'] ?? '');
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$base_url = rtrim((string)($options['base-url'] ?? ''), '/');
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$user = trim((string)($options['user'] ?? ''));
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$password_file = (string)($options['password-file'] ?? '');
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$cache_dir = rtrim((string)($options['cache-dir'] ?? ''), '/');
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if ($mapping_file === '' || !is_readable($mapping_file)) fail_preview('WebDAV-Mapping ist nicht lesbar.');
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if ($base_url === '' || $user === '' || $password_file === '' || !is_readable($password_file) || $cache_dir === '') fail_preview('Preview-Parameter sind unvollständig.');
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if (!function_exists('curl_init')) fail_preview('PHP-cURL ist nicht verfügbar.');
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$password = rtrim((string)file_get_contents($password_file), "\r\n");
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if ($password === '') fail_preview('Nextcloud-Passwort fehlt.');
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$mapping = json_decode((string)file_get_contents($mapping_file), true);
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if (!is_array($mapping) || !isset($mapping['files']) || !is_array($mapping['files'])) fail_preview('WebDAV-Mapping ist ungültig.');
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if (!is_dir($cache_dir) && !mkdir($cache_dir, 0755, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
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@chmod($cache_dir, 0755);
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$state_file = $cache_dir.'/state.json';
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$old_state = array();
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if (is_readable($state_file))
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{
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$decoded = json_decode((string)file_get_contents($state_file), true);
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if (is_array($decoded)) $old_state = $decoded;
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}
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$new_state = array();
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$generated = 0;
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$cached = 0;
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$errors = 0;
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foreach ($mapping['files'] as $entry)
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{
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if (!is_array($entry) || (string)($entry['kind'] ?? '') !== 'file') continue;
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$webdav_path = trim((string)($entry['webdav_path'] ?? ''), '/');
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if ($webdav_path === '') continue;
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$etag = (string)($entry['etag'] ?? '');
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$key = sha1($webdav_path);
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$target = $cache_dir.'/'.$key.'.webp';
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$new_state[$key] = array('path'=>$webdav_path, 'etag'=>$etag);
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if (is_file($target) && isset($old_state[$key]) && (string)($old_state[$key]['etag'] ?? '') === $etag)
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{
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$cached++;
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continue;
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}
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try
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{
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$url = $base_url.'/remote.php/dav/files/'.rawurlencode($user).'/'.quote_webdav_path($webdav_path);
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$blob = fetch_remote_blob($url, $user, $password);
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write_preview($blob, $target);
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$generated++;
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}
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catch (Throwable $e)
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{
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$errors++;
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fwrite(STDERR, $webdav_path.': '.$e->getMessage()."\n");
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}
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}
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foreach (glob($cache_dir.'/*.webp') ?: array() as $file)
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{
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$key = basename($file, '.webp');
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if (!isset($new_state[$key])) @unlink($file);
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}
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file_put_contents($state_file, json_encode($new_state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT)."\n", LOCK_EX);
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@chmod($state_file, 0644);
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echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' fehler='.$errors."\n";
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exit($errors > 0 ? 1 : 0);
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}
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catch (Throwable $e)
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{
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fwrite(STDERR, 'WebDAV-Preview-Cache: '.$e->getMessage()."\n");
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exit(1);
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}
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