memories/lib/Db/TimelineQueryDays.php

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<?php
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declare(strict_types=1);
namespace OCA\Memories\Db;
use OCA\Memories\ClustersBackend;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\IDBConnection;
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const CTE_FOLDERS = // CTE to get all folders recursively in the given top folders excluding archive
'WITH RECURSIVE *PREFIX*cte_folders_all(fileid) AS (
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SELECT
f.fileid
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FROM
*PREFIX*filecache f
WHERE
f.fileid IN (:topFolderIds)
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UNION ALL
SELECT
f.fileid
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FROM
*PREFIX*filecache f
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INNER JOIN *PREFIX*cte_folders_all c
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ON (f.parent = c.fileid
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AND f.mimetype = (SELECT `id` FROM `*PREFIX*mimetypes` WHERE `mimetype` = \'httpd/unix-directory\')
AND f.name <> \'.archive\'
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)
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), *PREFIX*cte_folders AS (
SELECT
fileid
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FROM
*PREFIX*cte_folders_all
GROUP BY
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fileid
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)';
const CTE_FOLDERS_ARCHIVE = // CTE to get all archive folders recursively in the given top folders
'WITH RECURSIVE *PREFIX*cte_folders_all(fileid, name) AS (
SELECT
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f.fileid,
f.name
FROM
*PREFIX*filecache f
WHERE
f.fileid IN (:topFolderIds)
UNION ALL
SELECT
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f.fileid,
f.name
FROM
*PREFIX*filecache f
INNER JOIN *PREFIX*cte_folders_all c
ON (f.parent = c.fileid
AND f.mimetype = (SELECT `id` FROM `*PREFIX*mimetypes` WHERE `mimetype` = \'httpd/unix-directory\')
)
), *PREFIX*cte_folders(fileid) AS (
SELECT
cfa.fileid
FROM
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*PREFIX*cte_folders_all cfa
WHERE
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cfa.name = \'.archive\'
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GROUP BY
cfa.fileid
UNION ALL
SELECT
f.fileid
FROM
*PREFIX*filecache f
INNER JOIN *PREFIX*cte_folders c
ON (f.parent = c.fileid)
)';
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trait TimelineQueryDays
{
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protected IDBConnection $connection;
/**
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* Get the days response from the database for the timeline.
*
* @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
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*
* @return array The days response
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*/
public function getDays(
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bool $recursive,
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bool $archive,
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array $queryTransforms = []
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): array {
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$query = $this->connection->getQueryBuilder();
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// 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')
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;
$query = $this->joinFilecache($query, null, $recursive, $archive);
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// Group and sort by dayid
$query->groupBy('m.dayid')
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->orderBy('m.dayid', 'DESC')
;
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// Apply all transformations
$this->applyAllTransforms($queryTransforms, $query, true);
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$cursor = $this->executeQueryWithCTEs($query);
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$rows = $cursor->fetchAll();
$cursor->closeCursor();
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return $this->processDays($rows);
}
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/**
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* Get the day response from the database for the timeline.
*
* @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
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*
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* @return array An array of day responses
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*/
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public function getDay(
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?array $day_ids,
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bool $recursive,
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bool $archive,
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array $queryTransforms = []
): array {
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$query = $this->connection->getQueryBuilder();
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// Get all entries also present in filecache
$fileid = $query->createFunction('DISTINCT m.fileid');
// We don't actually use m.datetaken here, but postgres
// needs that all fields in ORDER BY are also in SELECT
// when using DISTINCT on selected fields
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$query->select($fileid, ...TimelineQuery::TIMELINE_SELECT)
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->from('memories', 'm')
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;
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// JOIN with filecache for existing files
$query = $this->joinFilecache($query, null, $recursive, $archive);
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// JOIN with mimetypes to get the mimetype
$query->join('f', 'mimetypes', 'mimetypes', $query->expr()->eq('f.mimetype', 'mimetypes.id'));
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// Filter by dayid unless wildcard
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if (null !== $day_ids) {
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$query->andWhere($query->expr()->in('m.dayid', $query->createNamedParameter($day_ids, IQueryBuilder::PARAM_INT_ARRAY)));
} else {
// Limit wildcard to 100 results
$query->setMaxResults(100);
}
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// Add favorite field
$this->addFavoriteTag($query);
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// Group and sort by date taken
$query->orderBy('m.datetaken', 'DESC');
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$query->addOrderBy('m.fileid', 'DESC'); // tie-breaker
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// Apply all transformations
$this->applyAllTransforms($queryTransforms, $query, false);
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// FETCH all photos in this day
$day = $this->executeQueryWithCTEs($query)->fetchAll();
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// Post process the day in-place
foreach ($day as &$photo) {
$this->processDayPhoto($photo);
}
return $day;
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}
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public function executeQueryWithCTEs(IQueryBuilder $query, string $psql = '')
{
$sql = empty($psql) ? $query->getSQL() : $psql;
$params = $query->getParameters();
$types = $query->getParameterTypes();
// Get SQL
$CTE_SQL = \array_key_exists('cteFoldersArchive', $params) && $params['cteFoldersArchive']
? CTE_FOLDERS_ARCHIVE
: CTE_FOLDERS;
// Add WITH clause if needed
if (false !== strpos($sql, 'cte_folders')) {
$sql = $CTE_SQL.' '.$sql;
}
return $this->connection->executeQuery($sql, $params, $types);
}
/**
* Inner join with oc_filecache.
*
* @param IQueryBuilder $query Query builder
* @param TimelineRoot $root 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
*/
public function joinFilecache(
IQueryBuilder $query,
?TimelineRoot $root = null,
bool $recursive = true,
bool $archive = false
): IQueryBuilder {
if (null === $root) {
$root = $this->root();
}
// Join with memories
$baseOp = $query->expr()->eq('f.fileid', 'm.fileid');
if ($root->isEmpty()) {
return $query->innerJoin('m', 'filecache', 'f', $baseOp);
}
// Filter by folder (recursive or otherwise)
$pathOp = null;
if ($recursive) {
// Join with folders CTE
$this->addSubfolderJoinParams($query, $root, $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', $query->createNamedParameter($root->getOneId(), IQueryBuilder::PARAM_INT));
}
return $query->innerJoin('m', 'filecache', 'f', $query->expr()->andX(
$baseOp,
$pathOp,
));
}
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/**
* Process the days response.
*
* @param array $days
*/
private function processDays($days)
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{
foreach ($days as &$row) {
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$row['dayid'] = (int) $row['dayid'];
$row['count'] = (int) $row['count'];
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}
return $days;
}
/**
* Process the single day response.
*/
private function processDayPhoto(array &$row)
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{
// 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']);
if (!$row['liveid']) {
unset($row['liveid']);
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}
// All cluster transformations
ClustersBackend\Manager::applyDayPostTransforms($this->request, $row);
// We don't need these fields
unset($row['datetaken']);
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}
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/**
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* Get all folders inside a top folder.
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*/
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private function addSubfolderJoinParams(
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IQueryBuilder &$query,
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TimelineRoot &$root,
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bool $archive
) {
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// Add query parameters
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$query->setParameter('topFolderIds', $root->getIds(), IQueryBuilder::PARAM_INT_ARRAY);
$query->setParameter('cteFoldersArchive', $archive, IQueryBuilder::PARAM_BOOL);
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}
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}