connection = $connection; $this->preview = \OC::$server->get(IPreview::class); $this->livePhoto = new LivePhoto($connection); } /** * Process a file to insert Exif data into the database. * * @param File $file File node to process * @param bool $force Update the record even if the file has not changed */ public function processFile(File $file, bool $force = false): bool { // Check if we want to process this file if (!Index::isSupported($file)) { return false; } // Get parameters $mtime = $file->getMtime(); $fileId = $file->getId(); $isvideo = Index::isVideo($file); // Get previous row $prevRow = $this->getCurrentRow($fileId); // Skip if not forced and file has not changed if (!$force && $prevRow && ((int) $prevRow['mtime'] === $mtime)) { return false; } // Get exif data try { $exif = Exif::getExifFromFile($file); } catch (\Exception $e) { $exif = []; } // Hand off if Live Photo video part if ($isvideo && $this->livePhoto->isVideoPart($exif)) { $this->livePhoto->processVideoPart($file, $exif); return true; } // Delete video part if it is no longer valid if ($prevRow && !\array_key_exists('mapcluster', $prevRow)) { $this->livePhoto->deleteVideoPart($file); $prevRow = null; } // Video parameters $videoDuration = round((float) ($isvideo ? ($exif['Duration'] ?? $exif['TrackDuration'] ?? 0) : 0)); // Process location data // This also modifies the exif array in-place to set the LocationTZID [$lat, $lon, $mapCluster] = $this->processExifLocation($fileId, $exif, $prevRow); // Get date parameters (after setting timezone offset) $dateTaken = Exif::getDateTaken($file, $exif); // Store the acutal epoch with the EXIF data $exif['DateTimeEpoch'] = $dateTaken->getTimestamp(); // Store the date taken in the database as UTC (local date) only // Basically, assume everything happens in Greenwich $dateLocalUtc = Exif::forgetTimezone($dateTaken)->getTimestamp(); $dateTakenStr = gmdate('Y-m-d H:i:s', $dateLocalUtc); // We need to use the local time in UTC for the dayId // This way two photos in different timezones on the same date locally // end up in the same dayId group $dayId = floor($dateLocalUtc / 86400); // Get size of image [$w, $h] = Exif::getDimensions($exif); // Get live photo ID of video part $liveid = $this->livePhoto->getLivePhotoId($file, $exif); // Get exif json $exifJson = $this->getExifJson($exif); // Parameters for insert or update $query = $this->connection->getQueryBuilder(); $params = [ 'fileid' => $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT), 'objectid' => $query->createNamedParameter((string) $fileId, IQueryBuilder::PARAM_STR), 'dayid' => $query->createNamedParameter($dayId, IQueryBuilder::PARAM_INT), 'datetaken' => $query->createNamedParameter($dateTakenStr, IQueryBuilder::PARAM_STR), 'mtime' => $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT), 'isvideo' => $query->createNamedParameter($isvideo, IQueryBuilder::PARAM_INT), 'video_duration' => $query->createNamedParameter($videoDuration, IQueryBuilder::PARAM_INT), 'w' => $query->createNamedParameter($w, IQueryBuilder::PARAM_INT), 'h' => $query->createNamedParameter($h, IQueryBuilder::PARAM_INT), 'exif' => $query->createNamedParameter($exifJson, IQueryBuilder::PARAM_STR), 'liveid' => $query->createNamedParameter($liveid, IQueryBuilder::PARAM_STR), 'lat' => $query->createNamedParameter($lat, IQueryBuilder::PARAM_STR), 'lon' => $query->createNamedParameter($lon, IQueryBuilder::PARAM_STR), 'mapcluster' => $query->createNamedParameter($mapCluster, IQueryBuilder::PARAM_INT), ]; // There is no easy way to UPSERT in standard SQL // https://stackoverflow.com/questions/15252213/sql-standard-upsert-call try { if ($prevRow) { $query->update('memories') ->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT))) ; foreach ($params as $key => $value) { $query->set($key, $value); } } else { $query->insert('memories')->values($params); } return $query->executeStatement() > 0; } catch (\Exception $ex) { error_log('Failed to create memories record: '.$ex->getMessage()); return false; } } /** * Remove a file from the exif database. */ public function deleteFile(File &$file) { // Get full record $query = $this->connection->getQueryBuilder(); $query->select('*') ->from('memories') ->where($query->expr()->eq('fileid', $query->createNamedParameter($file->getId(), IQueryBuilder::PARAM_INT))) ; $record = $query->executeQuery()->fetch(); // Delete all records regardless of existence foreach (DELETE_TABLES as $table) { $query = $this->connection->getQueryBuilder(); $query->delete($table) ->where($query->expr()->eq('fileid', $query->createNamedParameter($file->getId(), IQueryBuilder::PARAM_INT))) ; $query->executeStatement(); } // Delete from map cluster if ($record && ($cid = (int) $record['mapcluster']) > 0) { $this->mapRemoveFromCluster($cid, (float) $record['lat'], (float) $record['lon']); } } /** * Clear the entire index. Does not need confirmation! * * @param File $file */ public function clear() { $p = $this->connection->getDatabasePlatform(); foreach (array_merge(DELETE_TABLES, TRUNCATE_TABLES) as $table) { $this->connection->executeStatement($p->getTruncateTableSQL('*PREFIX*'.$table, false)); } } /** * Get the current row for a file_id, from either table. */ private function getCurrentRow(int $fileId): ?array { $fetch = function (string $table) use ($fileId) { $query = $this->connection->getQueryBuilder(); return $query->select('*') ->from($table) ->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT))) ->executeQuery() ->fetch() ; }; return $fetch('memories') ?: $fetch('memories_livephoto') ?: null; } /** * Convert EXIF data to filtered JSON string. */ private function getExifJson(array $exif): string { // Clean up EXIF to keep only useful metadata $filteredExif = []; foreach ($exif as $key => $value) { // Truncate any fields > 2048 chars if (\is_string($value) && \strlen($value) > 2048) { $value = substr($value, 0, 2048); } // Only keep fields in the whitelist if (\array_key_exists($key, EXIF_FIELDS_LIST)) { $filteredExif[$key] = $value; } } // Store JSON string $exifJson = json_encode($filteredExif); // Store error if data > 64kb if (\is_string($exifJson)) { if (\strlen($exifJson) > 65535) { $exifJson = json_encode(['error' => 'Exif data too large']); } } else { $exifJson = json_encode(['error' => 'Exif data encoding error']); } return $exifJson; } }