diff options
author | Marco Nassabain <marco.nassabain@etu.unistra.fr> | 2021-01-17 19:50:45 +0100 |
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committer | Sean Molenaar <SMillerDev@users.noreply.github.com> | 2021-04-08 22:31:21 +0200 |
commit | 527eef0727e3bfceb53f209bc74d096626eb1a6b (patch) | |
tree | caef69aecfc7c89307565eb5fd8db9dfff0cf456 /lib/Db | |
parent | 5b09e74f4099f61fc2a9fb3b627400f4ef8dd5e6 (diff) |
✨ NewsItem: add share functions (mapper + service)
Signed-off-by: Marco Nassabain <marco.nassabain@hotmail.com>
Diffstat (limited to 'lib/Db')
-rw-r--r-- | lib/Db/ItemMapper.php | 545 |
1 files changed, 545 insertions, 0 deletions
diff --git a/lib/Db/ItemMapper.php b/lib/Db/ItemMapper.php new file mode 100644 index 000000000..090461c17 --- /dev/null +++ b/lib/Db/ItemMapper.php @@ -0,0 +1,545 @@ +<?php +/** + * Nextcloud - News + * + * This file is licensed under the Affero General Public License version 3 or + * later. See the COPYING file. + * + * @author Alessandro Cosentino <cosenal@gmail.com> + * @author Bernhard Posselt <dev@bernhard-posselt.com> + * @copyright 2012 Alessandro Cosentino + * @copyright 2012-2014 Bernhard Posselt + */ + +namespace OCA\News\Db; + +use Exception; +use OCA\News\Utility\Time; +use OCP\AppFramework\Db\DoesNotExistException; +use OCP\AppFramework\Db\Entity; +use OCP\AppFramework\Db\MultipleObjectsReturnedException; +use OCP\DB\QueryBuilder\IQueryBuilder; +use OCP\IDBConnection; + +/** + * Class LegacyItemMapper + * + * @package OCA\News\Db + * @deprecated use ItemMapper + */ +class ItemMapper extends NewsMapper +{ + + const TABLE_NAME = 'news_items'; + public function __construct(IDBConnection $db, Time $time) + { + parent::__construct($db, $time, Item::class); + } + + private function makeSelectQuery( + $prependTo = '', + $oldestFirst = false, + $distinctFingerprint = false + ) { + if ($oldestFirst) { + $ordering = 'ASC'; + } else { + $ordering = 'DESC'; + } + + return 'SELECT `items`.* FROM `*PREFIX*news_items` `items` ' . + 'JOIN `*PREFIX*news_feeds` `feeds` ' . + 'ON `feeds`.`id` = `items`.`feed_id` ' . + 'AND `feeds`.`deleted_at` = 0 ' . + 'AND `feeds`.`user_id` = ? ' . + $prependTo . + 'LEFT OUTER JOIN `*PREFIX*news_folders` `folders` ' . + 'ON `folders`.`id` = `feeds`.`folder_id` ' . + 'WHERE `feeds`.`folder_id` IS NULL ' . + 'OR `folders`.`deleted_at` = 0 ' . + 'ORDER BY `items`.`id` ' . $ordering; + } + + /** + * check if type is feed or all items should be shown + * + * @param bool $showAll + * @param int|null $type + * @return string + */ + private function buildStatusQueryPart($showAll, $type = null) + { + $sql = ''; + + if (isset($type) && $type === FeedType::STARRED) { + $sql = 'AND `items`.`starred` = '; + $sql .= $this->db->quote(true, IQueryBuilder::PARAM_BOOL) . ' '; + } elseif (!$showAll || $type === FeedType::UNREAD) { + $sql .= 'AND `items`.`unread` = '; + $sql .= $this->db->quote(true, IQueryBuilder::PARAM_BOOL) . ' '; + } + + return $sql; + } + + private function buildSearchQueryPart(array $search = []) + { + return str_repeat('AND `items`.`search_index` LIKE ? ', count($search)); + } + + /** + * wrap and escape search parameters in a like statement + * + * @param string[] $search an array of strings that should be searched + * @return array with like parameters + */ + private function buildLikeParameters($search = []) + { + return array_map( + function ($param) { + $param = addcslashes($param, '\\_%'); + return '%' . mb_strtolower($param, 'UTF-8') . '%'; + }, + $search + ); + } + + /** + * @param int $id + * @param string $userId + * @return \OCA\News\Db\Item + */ + public function find(string $userId, int $id) + { + $sql = $this->makeSelectQuery('AND `items`.`id` = ? '); + return $this->findEntity($sql, [$userId, $id]); + } + + public function starredCount(string $userId) + { + $sql = 'SELECT COUNT(*) AS size FROM `*PREFIX*news_items` `items` ' . + 'JOIN `*PREFIX*news_feeds` `feeds` ' . + 'ON `feeds`.`id` = `items`.`feed_id` ' . + 'AND `feeds`.`deleted_at` = 0 ' . + 'AND `feeds`.`user_id` = ? ' . + 'AND `items`.`starred` = ? ' . + 'LEFT OUTER JOIN `*PREFIX*news_folders` `folders` ' . + 'ON `folders`.`id` = `feeds`.`folder_id` ' . + 'WHERE `feeds`.`folder_id` IS NULL ' . + 'OR `folders`.`deleted_at` = 0'; + + $params = [$userId, true]; + + $result = $this->execute($sql, $params)->fetch(); + + return (int)$result['size']; + } + + + public function readAll(int $highestItemId, $time, string $userId) + { + $sql = 'UPDATE `*PREFIX*news_items` ' . + 'SET unread = ? ' . + ', `last_modified` = ? ' . + 'WHERE `feed_id` IN (' . + 'SELECT `id` FROM `*PREFIX*news_feeds` ' . + 'WHERE `user_id` = ? ' . + ') ' . + 'AND `id` <= ?'; + $params = [false, $time, $userId, $highestItemId]; + $this->execute($sql, $params); + } + + + public function readFolder(?int $folderId, $highestItemId, $time, $userId) + { + $folderWhere = is_null($folderId) ? 'IS' : '='; + $sql = 'UPDATE `*PREFIX*news_items` ' . + 'SET unread = ? ' . + ', `last_modified` = ? ' . + 'WHERE `feed_id` IN (' . + 'SELECT `id` FROM `*PREFIX*news_feeds` ' . + "WHERE `folder_id` ${folderWhere} ? " . + 'AND `user_id` = ? ' . + ') ' . + 'AND `id` <= ?'; + $params = [false, $time, $folderId, $userId, + $highestItemId]; + $this->execute($sql, $params); + } + + + public function readFeed($feedId, $highestItemId, $time, $userId) + { + $sql = 'UPDATE `*PREFIX*news_items` ' . + 'SET unread = ? ' . + ', `last_modified` = ? ' . + 'WHERE `feed_id` = ? ' . + 'AND `id` <= ? ' . + 'AND EXISTS (' . + 'SELECT * FROM `*PREFIX*news_feeds` ' . + 'WHERE `user_id` = ? ' . + 'AND `id` = ? ) '; + $params = [false, $time, $feedId, $highestItemId, + $userId, $feedId]; + + $this->execute($sql, $params); + } + + + private function getOperator($oldestFirst) + { + if ($oldestFirst) { + return '>'; + } else { + return '<'; + } + } + + + public function findAllNew($updatedSince, $type, $showAll, $userId) + { + $sql = $this->buildStatusQueryPart($showAll, $type); + + $sql .= 'AND `items`.`last_modified` >= ? '; + $sql = $this->makeSelectQuery($sql); + $params = [$userId, $updatedSince]; + return $this->findEntities($sql, $params); + } + + + public function findAllNewFolder(?int $id, $updatedSince, $showAll, $userId) + { + $sql = $this->buildStatusQueryPart($showAll); + + $folderWhere = is_null($id) ? 'IS' : '='; + $sql .= "AND `feeds`.`folder_id` ${$folderWhere} ? " . + 'AND `items`.`last_modified` >= ? '; + $sql = $this->makeSelectQuery($sql); + $params = [$userId, $id, $updatedSince]; + return $this->findEntities($sql, $params); + } + + + public function findAllNewFeed($id, $updatedSince, $showAll, $userId) + { + $sql = $this->buildStatusQueryPart($showAll); + + $sql .= 'AND `items`.`feed_id` = ? ' . + 'AND `items`.`last_modified` >= ? '; + $sql = $this->makeSelectQuery($sql); + $params = [$userId, $id, $updatedSince]; + return $this->findEntities($sql, $params); + } + + + private function findEntitiesIgnoringNegativeLimit($sql, $params, $limit): array + { + // ignore limit if negative to offer a way to return all feeds + if ($limit >= 0) { + return $this->findEntities($sql, $params, $limit); + } else { + return $this->findEntities($sql, $params); + } + } + + + public function findAllFeed( + $id, + $limit, + $offset, + $showAll, + $oldestFirst, + $userId, + $search = [] + ) { + $params = [$userId]; + $params = array_merge($params, $this->buildLikeParameters($search)); + $params[] = $id; + + $sql = $this->buildStatusQueryPart($showAll); + $sql .= $this->buildSearchQueryPart($search); + + $sql .= 'AND `items`.`feed_id` = ? '; + if ($offset !== 0) { + $sql .= 'AND `items`.`id` ' . + $this->getOperator($oldestFirst) . ' ? '; + $params[] = $offset; + } + $sql = $this->makeSelectQuery($sql, $oldestFirst, $search); + return $this->findEntitiesIgnoringNegativeLimit($sql, $params, $limit); + } + + + public function findAllFolder( + ?int $id, + $limit, + $offset, + $showAll, + $oldestFirst, + $userId, + $search = [] + ) { + $params = [$userId]; + $params = array_merge($params, $this->buildLikeParameters($search)); + $params[] = $id; + + $sql = $this->buildStatusQueryPart($showAll); + $sql .= $this->buildSearchQueryPart($search); + + $folderWhere = is_null($id) ? 'IS' : '='; + $sql .= "AND `feeds`.`folder_id` ${folderWhere} ? "; + if ($offset !== 0) { + $sql .= 'AND `items`.`id` ' . $this->getOperator($oldestFirst) . ' ? '; + $params[] = $offset; + } + $sql = $this->makeSelectQuery($sql, $oldestFirst, $search); + return $this->findEntitiesIgnoringNegativeLimit($sql, $params, $limit); + } + + + public function findAllItems( + $limit, + $offset, + $type, + $showAll, + $oldestFirst, + $userId, + $search = [] + ): array { + $params = [$userId]; + $params = array_merge($params, $this->buildLikeParameters($search)); + $sql = $this->buildStatusQueryPart($showAll, $type); + $sql .= $this->buildSearchQueryPart($search); + + if ($offset !== 0) { + $sql .= 'AND `items`.`id` ' . + $this->getOperator($oldestFirst) . ' ? '; + $params[] = $offset; + } + + $sql = $this->makeSelectQuery($sql, $oldestFirst); + + return $this->findEntitiesIgnoringNegativeLimit($sql, $params, $limit); + } + + + public function findAllUnreadOrStarred($userId) + { + $params = [$userId, true, true]; + $sql = 'AND (`items`.`unread` = ? OR `items`.`starred` = ?) '; + $sql = $this->makeSelectQuery($sql); + return $this->findEntities($sql, $params); + } + + + public function findByGuidHash($guidHash, $feedId, $userId) + { + $sql = $this->makeSelectQuery( + 'AND `items`.`guid_hash` = ? ' . + 'AND `feeds`.`id` = ? ' + ); + + return $this->findEntity($sql, [$userId, $guidHash, $feedId]); + } + + + /** + * Delete all items for feeds that have over $threshold unread and not + * starred items + * + * @param int $threshold the number of items that should be deleted + */ + public function deleteReadOlderThanThreshold($threshold) + { + $params = [false, false, $threshold]; + + $sql = 'SELECT (COUNT(*) - `feeds`.`articles_per_update`) AS `size`, ' . + '`feeds`.`id` AS `feed_id`, `feeds`.`articles_per_update` ' . + 'FROM `*PREFIX*news_items` `items` ' . + 'JOIN `*PREFIX*news_feeds` `feeds` ' . + 'ON `feeds`.`id` = `items`.`feed_id` ' . + 'AND `items`.`unread` = ? ' . + 'AND `items`.`starred` = ? ' . + 'GROUP BY `feeds`.`id`, `feeds`.`articles_per_update` ' . + 'HAVING COUNT(*) > ?'; + + $result = $this->execute($sql, $params); + + while ($row = $result->fetch()) { + $size = (int)$row['size']; + $limit = $size - $threshold; + $feed_id = $row['feed_id']; + + if ($limit > 0) { + $params = [false, false, $feed_id, $limit]; + $sql = 'SELECT `id` FROM `*PREFIX*news_items` ' . + 'WHERE `unread` = ? ' . + 'AND `starred` = ? ' . + 'AND `feed_id` = ? ' . + 'ORDER BY `id` ASC ' . + 'LIMIT 1 ' . + 'OFFSET ? '; + } + $limit_result = $this->execute($sql, $params); + if ($limit_row = $limit_result->fetch()) { + $limit_id = (int)$limit_row['id']; + $params = [false, false, $feed_id, $limit_id]; + $sql = 'DELETE FROM `*PREFIX*news_items` ' . + 'WHERE `unread` = ? ' . + 'AND `starred` = ? ' . + 'AND `feed_id` = ? ' . + 'AND `id` < ? '; + $this->execute($sql, $params); + } + } + } + + + public function getNewestItemId($userId) + { + $sql = 'SELECT MAX(`items`.`id`) AS `max_id` ' . + 'FROM `*PREFIX*news_items` `items` ' . + 'JOIN `*PREFIX*news_feeds` `feeds` ' . + 'ON `feeds`.`id` = `items`.`feed_id` ' . + 'AND `feeds`.`user_id` = ?'; + $params = [$userId]; + + $result = $this->findOneQuery($sql, $params); + + return (int)$result['max_id']; + } + + + /** + * Deletes all items of a user + * + * @param string $userId the name of the user + */ + public function deleteUser($userId) + { + $sql = 'DELETE FROM `*PREFIX*news_items` ' . + 'WHERE `feed_id` IN (' . + 'SELECT `feeds`.`id` FROM `*PREFIX*news_feeds` `feeds` ' . + 'WHERE `feeds`.`user_id` = ?' . + ')'; + + $this->execute($sql, [$userId]); + } + + + /** + * Returns a list of ids and userid of all items + */ + public function findAllIds($limit = null, $offset = null) + { + $sql = 'SELECT `id` FROM `*PREFIX*news_items`'; + return $this->execute($sql, [], $limit, $offset)->fetchAll(); + } + + /** + * Update search indices of all items + */ + public function updateSearchIndices() + { + // update indices in steps to prevent memory issues on larger systems + $step = 1000; // update 1000 items at a time + $itemCount = 1; + $offset = 0; + + // stop condition if there are no previously fetched items + while ($itemCount > 0) { + $items = $this->findAllIds($step, $offset); + $itemCount = count($items); + $this->updateSearchIndex($items); + $offset += $step; + } + } + + private function updateSearchIndex(array $items = []) + { + foreach ($items as $row) { + $sql = 'SELECT * FROM `*PREFIX*news_items` WHERE `id` = ?'; + $params = [$row['id']]; + $item = $this->findEntity($sql, $params); + $item->generateSearchIndex(); + $this->update($item); + } + } + + public function readItem($itemId, $isRead, $lastModified, $userId) + { + $item = $this->find($userId, $itemId); + + // reading an item should set all of the same items as read, whereas + // marking an item as unread should only mark the selected instance + // as unread + if ($isRead) { + $sql = 'UPDATE `*PREFIX*news_items` + SET `unread` = ?, + `last_modified` = ? + WHERE `fingerprint` = ? + AND `feed_id` IN ( + SELECT `f`.`id` FROM `*PREFIX*news_feeds` AS `f` + WHERE `f`.`user_id` = ? + )'; + $params = [false, $lastModified, $item->getFingerprint(), $userId]; + $this->execute($sql, $params); + } else { + $item->setLastModified($lastModified); + $item->setUnread(true); + $this->update($item); + } + } + + /** + * NO-OP + * + * @param string $userId + * + * @return array + */ + public function findAllFromUser(string $userId): array + { + return []; + } + + public function findFromUser(string $userId, int $id): Entity + { + return $this->find($id, $userId); + } + + /** + * NO-OP + * @return array + */ + public function findAll(): array + { + return []; + } + + + public function shareItem($itemId, $shareWithId, $userId) + { + // find existing item and copy it + $item = $this->find($userId, $itemId); + + // copy item + $newItem = Item::fromImport($item->jsonSerialize()); + + // copy/initialize fields + $newItem->setUnread(false); + $newItem->setStarred(false); + $newItem->setFeedId(null); + $newItem->setFingerprint($item->getFingerprint()); + $newItem->setContentHash($item->getContentHash()); + $newItem->setSearchIndex($item->getSearchIndex()); + + // set share data + $newItem->setSharedBy($userId); + $newItem->setSharedWith($shareWithId); + + // persist new item + $this->insert($newItem); + } +} |