memories/lib/Db/TimelineWrite.php

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<?php
declare(strict_types=1);
namespace OCA\Memories\Db;
use OCA\Memories\AppInfo\Application;
use OCA\Memories\Exif;
use OCP\Files\File;
use OCP\IDBConnection;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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class TimelineWrite {
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protected IDBConnection $connection;
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public function __construct(IDBConnection $connection) {
$this->connection = $connection;
}
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/**
* Check if a file has a valid mimetype for processing
* @param File $file
* @return int 0 for invalid, 1 for image, 2 for video
*/
public function getFileType(File $file): int {
$mime = $file->getMimeType();
if (in_array($mime, Application::IMAGE_MIMES)) {
return 1;
} elseif (in_array($mime, Application::VIDEO_MIMES)) {
return 2;
}
return 0;
}
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/**
* Process a file to insert Exif data into the database
* @param File $file
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* @return int 2 if processed, 1 if skipped, 0 if not valid
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*/
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public function processFile(
File &$file,
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bool $force=false
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): int {
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// There is no easy way to UPSERT in a standard SQL way, so just
// do multiple calls. The worst that can happen is more updates,
// but that's not a big deal.
// https://stackoverflow.com/questions/15252213/sql-standard-upsert-call
// Check if we want to process this file
$fileType = $this->getFileType($file);
$isvideo = ($fileType === 2);
if (!$fileType) {
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return 0;
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}
// Get parameters
$mtime = $file->getMtime();
$fileId = $file->getId();
// Check if need to update
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$query = $this->connection->getQueryBuilder();
$query->select('fileid', 'mtime')
->from('memories')
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->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
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$prevRow = $query->executeQuery()->fetch();
if ($prevRow && !$force && intval($prevRow['mtime']) === $mtime) {
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return 1;
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}
// Get exif data
$exif = [];
try {
$exif = Exif::getExifFromFile($file);
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} catch (\Exception $e) {}
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// Get more parameters
$dateTaken = Exif::getDateTaken($file, $exif);
$dayId = floor($dateTaken / 86400);
$dateTaken = gmdate('Y-m-d H:i:s', $dateTaken);
if ($prevRow) {
// Update existing row
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$query->update('memories')
->set('dayid', $query->createNamedParameter($dayId, IQueryBuilder::PARAM_INT))
->set('datetaken', $query->createNamedParameter($dateTaken, IQueryBuilder::PARAM_STR))
->set('mtime', $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT))
->set('isvideo', $query->createNamedParameter($isvideo, IQueryBuilder::PARAM_INT))
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->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
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$query->executeStatement();
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} else {
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// Try to create new row
try {
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$query->insert('memories')
->values([
'fileid' => $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT),
'dayid' => $query->createNamedParameter($dayId, IQueryBuilder::PARAM_INT),
'datetaken' => $query->createNamedParameter($dateTaken, IQueryBuilder::PARAM_STR),
'mtime' => $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT),
'isvideo' => $query->createNamedParameter($isvideo, IQueryBuilder::PARAM_INT),
]);
$query->executeStatement();
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} catch (\Exception $ex) {
error_log("Failed to create memories record: " . $ex->getMessage());
}
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}
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return 2;
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}
/**
* Remove a file from the exif database
* @param File $file
*/
public function deleteFile(File &$file) {
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$query = $this->connection->getQueryBuilder();
$query->delete('memories')
->where($query->expr()->eq('fileid', $query->createNamedParameter($file->getId(), IQueryBuilder::PARAM_INT)));
$query->executeStatement();
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}
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/**
* Clear the entire index. Does not need confirmation!
* @param File $file
*/
public function clear() {
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$query = $this->connection->getQueryBuilder();
$query->delete('memories');
$query->executeStatement();
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}
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}