memories/lib/Db/TimelineQueryDays.php

314 lines
10 KiB
PHP

<?php
declare(strict_types=1);
namespace OCA\Memories\Db;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\Files\Folder;
use OCP\IDBConnection;
const CTE_FOLDERS = // CTE to get all folders recursively in the given top folder
'WITH RECURSIVE *PREFIX*cte_folders(fileid) AS (
SELECT
f.fileid
FROM
*PREFIX*filecache f
WHERE
f.fileid = :topFolderId
UNION ALL
SELECT
f.fileid
FROM
*PREFIX*filecache f
INNER JOIN *PREFIX*cte_folders c
ON (f.parent = c.fileid
AND f.mimetype = (SELECT `id` FROM `*PREFIX*mimetypes` WHERE `mimetype` = \'httpd/unix-directory\')
AND f.fileid <> :excludedFolderId
)
)';
trait TimelineQueryDays
{
protected IDBConnection $connection;
/**
* Get the days response from the database for the timeline.
*
* @param null|Folder $folder The folder to get the days from
* @param bool $recursive Whether to get the days recursively
* @param bool $archive Whether to get the days only from the archive folder
* @param array $queryTransforms An array of query transforms to apply to the query
*
* @return array The days response
*/
public function getDays(
&$folder,
string $uid,
bool $recursive,
bool $archive,
array $queryTransforms = []
): array {
$query = $this->connection->getQueryBuilder();
// Get all entries also present in filecache
$count = $query->func()->count($query->createFunction('DISTINCT m.fileid'), 'count');
$query->select('m.dayid', $count)
->from('memories', 'm')
;
$query = $this->joinFilecache($query, $folder, $recursive, $archive);
// Group and sort by dayid
$query->groupBy('m.dayid')
->orderBy('m.dayid', 'DESC')
;
// Apply all transformations
$this->applyAllTransforms($queryTransforms, $query, $uid);
$cursor = $this->executeQueryWithCTEs($query);
$rows = $cursor->fetchAll();
$cursor->closeCursor();
return $this->processDays($rows);
}
/**
* Get the day response from the database for the timeline.
*
* @param null|Folder $folder The folder to get the day from
* @param string $uid The user id
* @param int[] $day_ids The day ids to fetch
* @param bool $recursive If the query should be recursive
* @param bool $archive If the query should include only the archive folder
* @param array $queryTransforms The query transformations to apply
* @param mixed $day_ids
*
* @return array An array of day responses
*/
public function getDay(
&$folder,
string $uid,
$day_ids,
bool $recursive,
bool $archive,
array $queryTransforms = []
): array {
$query = $this->connection->getQueryBuilder();
// Get all entries also present in filecache
$fileid = $query->createFunction('DISTINCT m.fileid');
// We don't actually use m.datetaken here, but postgres
// needs that all fields in ORDER BY are also in SELECT
// when using DISTINCT on selected fields
$query->select($fileid, 'm.isvideo', 'm.video_duration', 'm.datetaken', 'm.dayid', 'm.w', 'm.h')
->from('memories', 'm')
;
// JOIN with filecache for existing files
$query = $this->joinFilecache($query, $folder, $recursive, $archive);
$query->addSelect('f.etag', 'f.path', 'f.name AS basename');
// JOIN with mimetypes to get the mimetype
$query->join('f', 'mimetypes', 'mimetypes', $query->expr()->eq('f.mimetype', 'mimetypes.id'));
$query->addSelect('mimetypes.mimetype');
// Filter by dayid unless wildcard
if (null !== $day_ids) {
$query->andWhere($query->expr()->in('m.dayid', $query->createNamedParameter($day_ids, IQueryBuilder::PARAM_INT_ARRAY)));
} else {
// Limit wildcard to 100 results
$query->setMaxResults(100);
}
// Add favorite field
$this->addFavoriteTag($query, $uid);
// Group and sort by date taken
$query->orderBy('m.datetaken', 'DESC');
$query->addOrderBy('m.fileid', 'DESC'); // tie-breaker
// Apply all transformations
$this->applyAllTransforms($queryTransforms, $query, $uid);
$cursor = $this->executeQueryWithCTEs($query);
$rows = $cursor->fetchAll();
$cursor->closeCursor();
return $this->processDay($rows, $uid, $folder);
}
/**
* Process the days response.
*
* @param array $days
*/
private function processDays(&$days)
{
foreach ($days as &$row) {
$row['dayid'] = (int) $row['dayid'];
$row['count'] = (int) $row['count'];
}
return $days;
}
/**
* Process the single day response.
*
* @param array $day
* @param string $uid User or blank if not logged in
* @param null|Folder $folder
*/
private function processDay(&$day, $uid, $folder)
{
$basePath = '#__#__#';
$davPath = '';
if (null !== $folder) {
// No way to get the internal path from the folder
$query = $this->connection->getQueryBuilder();
$query->select('path')
->from('filecache')
->where($query->expr()->eq('fileid', $query->createNamedParameter($folder->getId(), IQueryBuilder::PARAM_INT)))
;
$path = $query->executeQuery()->fetchOne();
$basePath = $path ?: $basePath;
// Get user facing path
// getPath looks like /user/files/... but we want /files/user/...
// Split at / and swap these
// For public shares, we just give the relative path
if (!empty($uid)) {
$actualPath = $folder->getPath();
$actualPath = explode('/', $actualPath);
if (\count($actualPath) >= 3) {
$tmp = $actualPath[1];
$actualPath[1] = $actualPath[2];
$actualPath[2] = $tmp;
$davPath = implode('/', $actualPath);
}
}
}
foreach ($day as &$row) {
// We don't need date taken (see query builder)
unset($row['datetaken']);
// Convert field types
$row['fileid'] = (int) $row['fileid'];
$row['isvideo'] = (int) $row['isvideo'];
$row['video_duration'] = (int) $row['video_duration'];
$row['dayid'] = (int) $row['dayid'];
$row['w'] = (int) $row['w'];
$row['h'] = (int) $row['h'];
if (!$row['isvideo']) {
unset($row['isvideo'], $row['video_duration']);
}
if ($row['categoryid']) {
$row['isfavorite'] = 1;
}
unset($row['categoryid']);
// Check if path exists and starts with basePath and remove
if (isset($row['path']) && !empty($row['path'])) {
if (0 === strpos($row['path'], $basePath)) {
$row['filename'] = $davPath.substr($row['path'], \strlen($basePath));
}
unset($row['path']);
}
// All transform processing
$this->processFace($row);
}
return $day;
}
private function executeQueryWithCTEs(IQueryBuilder &$query, string $psql = '')
{
$sql = empty($psql) ? $query->getSQL() : $psql;
$params = $query->getParameters();
$types = $query->getParameterTypes();
// Add WITH clause if needed
if (false !== strpos($sql, 'cte_folders')) {
$sql = CTE_FOLDERS.' '.$sql;
}
return $this->connection->executeQuery($sql, $params, $types);
}
/**
* Get all folders inside a top folder.
*/
private function addSubfolderJoinParams(
IQueryBuilder &$query,
Folder &$folder,
bool $archive
) {
// Query parameters, set at the end
$topFolderId = $folder->getId();
$excludedFolderId = -1;
/** @var Folder Archive folder if it exists */
$archiveFolder = null;
try {
$archiveFolder = $folder->get('.archive/');
} catch (\OCP\Files\NotFoundException $e) {
}
if (!$archive) {
// Exclude archive folder
if ($archiveFolder) {
$excludedFolderId = $archiveFolder->getId();
}
} else {
// Only include archive folder
$topFolderId = $archiveFolder ? $archiveFolder->getId() : -1;
}
// Add query parameters
$query->setParameter('topFolderId', $topFolderId, IQueryBuilder::PARAM_INT);
$query->setParameter('excludedFolderId', $excludedFolderId, IQueryBuilder::PARAM_INT);
}
/**
* Inner join with oc_filecache.
*
* @param IQueryBuilder $query Query builder
* @param null|Folder $folder Either the top folder or null for all
* @param bool $recursive Whether to get the days recursively
* @param bool $archive Whether to get the days only from the archive folder
*/
private function joinFilecache(
IQueryBuilder &$query,
&$folder,
bool $recursive,
bool $archive
) {
// Join with memories
$baseOp = $query->expr()->eq('f.fileid', 'm.fileid');
if (null === $folder) {
return $query->innerJoin('m', 'filecache', 'f', $baseOp);
}
// Filter by folder (recursive or otherwise)
$pathOp = null;
if ($recursive) {
// Join with folders CTE
$this->addSubfolderJoinParams($query, $folder, $archive);
$query->innerJoin('f', 'cte_folders', 'cte_f', $query->expr()->eq('f.parent', 'cte_f.fileid'));
} else {
// If getting non-recursively folder only check for parent
$pathOp = $query->expr()->eq('f.parent', $query->createNamedParameter($folder->getId(), IQueryBuilder::PARAM_INT));
}
return $query->innerJoin('m', 'filecache', 'f', $query->expr()->andX(
$baseOp,
$pathOp,
));
}
}