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<?php
declare(strict_types=1);
/**
* @copyright 2020 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2020 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OCP\Search;
use OCP\IUser;
/**
* Interface for search providers
*
* These providers will be implemented in apps, so they can participate in the
* global search results of Nextcloud. If an app provides more than one type of
* resource, e.g. contacts and address books in Nextcloud Contacts, it should
* register one provider per group.
*
* @since 20.0.0
*/
interface IProvider {
/**
* Get the unique ID of this search provider
*
* Ideally this should be the app name or an identifier identified with the
* app name, especially if the app registers more than one provider.
*
* Example: 'mail', 'mail_recipients', 'files_sharing'
*
* @return string
*
* @since 20.0.0
*/
public function getId(): string;
/**
* Get the translated name of this search provider
*
* Example: 'Mail', 'Contacts'...
*
* @return string
*
* @since 20.0.0
*/
public function getName(): string;
/**
* Get the search provider order
* The lower the int, the higher it will be sorted (0 will be before 10)
*
* @return int
*
* @since 20.0.0
*/
public function getOrder(): int;
/**
* Find matching search entries in an app
*
* Search results can either be a complete list of all the matches the app can
* find, or ideally a paginated result set where more data can be fetched on
* demand. To be able to tell where the next offset starts the search uses
* "cursors" which are a property of the last result entry. E.g. search results
* that show most recent entries first can look for entries older than the last
* one of the first result set. This approach was chosen over a numeric limit/
* offset approach as the offset moves as new data comes in. The cursor is
* resistant to these changes and will still show results without overlaps or
* gaps.
*
* See https://dev.to/jackmarchant/offset-and-cursor-pagination-explained-b89
* for the concept of cursors.
*
* Implementations that return result pages have to adhere to the limit
* property of a search query.
*
* @param IUser $user
* @param ISearchQuery $query
*
* @return SearchResult
*
* @since 20.0.0
*/
public function search(IUser $user, ISearchQuery $query): SearchResult;
}
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