<?php
/**
 * @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
 *
 * @author Julius Härtl <jus@bitgrid.net>
 *
 * @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 OCA\Deck\Db;

use OCP\IDb;


class BoardMapper extends DeckMapper implements IPermissionMapper {

    private $labelMapper;
	private $aclMapper;
	private $stackMapper;

    public function __construct(IDb $db, LabelMapper $labelMapper, AclMapper $aclMapper, StackMapper $stackMapper) {
        parent::__construct($db, 'deck_boards', '\OCA\Deck\Db\Board');
        $this->labelMapper = $labelMapper;
        $this->aclMapper = $aclMapper;
		$this->stackMapper = $stackMapper;
    }


	/**
	 * @param $id
	 * @param bool $withLabels
	 * @param bool $withAcl
	 * @return \OCP\AppFramework\Db\Entity if not found
	 */
    public function find($id, $withLabels=false, $withAcl=false) {
        $sql = 'SELECT id, title, owner, color, archived FROM `*PREFIX*deck_boards` ' .
            'WHERE `id` = ?';
        $board = $this->findEntity($sql, [$id]);

        // Add labels
        $labels = $this->labelMapper->findAll($id);
        $board->setLabels($labels);

        // Add acl
        $acl = $this->aclMapper->findAll($id);
        $board->setAcl($acl);
        
        return $board;
    }

    /**
     * Find all boards for a given user
     * @param $userId
     * @param null $limit
     * @param null $offset
     * @return array
     */
    public function findAllByUser($userId, $limit=null, $offset=null) {
        $sql = 'SELECT id, title, owner, color, archived, 0 as shared FROM oc_deck_boards WHERE owner = ? UNION ' .
            'SELECT boards.id, title, owner, color, archived, 1 as shared FROM oc_deck_boards as boards ' .
            'JOIN oc_deck_board_acl as acl ON boards.id=acl.board_id WHERE acl.participant=? AND acl.type=\'user\' AND boards.owner != ?';
        $entries = $this->findEntities($sql, [$userId, $userId, $userId], $limit, $offset);
        /* @var Board $entry */
        foreach ($entries as $entry) {
            $acl = $this->aclMapper->findAll($entry->id);
            $entry->setAcl($acl);
        }
        return $entries;
    }

	/**
	 * Find all boards for a given user
	 *
	 * @param $userId
	 * @param $groups
	 * @param null $limit
	 * @param null $offset
	 * @return array
	 */
    public function findAllByGroups($userId, $groups, $limit=null, $offset=null) {
        if(count($groups)<=0) {
            return [];
        }
        $sql = 'SELECT boards.id, title, owner, color, archived, 2 as shared FROM oc_deck_boards as boards ' .
            'INNER JOIN oc_deck_board_acl as acl ON boards.id=acl.board_id WHERE owner != ? AND type=\'group\' AND (';
		for($i=0;$i<count($groups);$i++) {
			$sql .= 'acl.participant = ? ';
			if(count($groups)>1 && $i<count($groups)-1) {
				$sql .= ' OR ';
			}
		}
        $sql .= ');';
        $entries = $this->findEntities($sql,  array_merge([$userId], $groups), $limit, $offset);
        /* @var Board $entry */
        foreach ($entries as $entry) {
            $acl = $this->aclMapper->findAll($entry->id);
            $entry->setAcl($acl);
        }
        return $entries;
    }

    public function delete(/** @noinspection PhpUnnecessaryFullyQualifiedNameInspection */
		\OCP\AppFramework\Db\Entity $entity) {
    	// delete acl
		$acl = $this->aclMapper->findAll($entity->getId());
		foreach ($acl as $item) {
			$this->aclMapper->delete($item);
		}

		// delete stacks ( includes cards, assigned labels)
		$stacks = $this->stackMapper->findAll($entity->getId());
		foreach ($stacks as $stack) {
			$this->stackMapper->delete($stack);
		}
		// delete labels
		$labels = $this->labelMapper->findAll($entity->getId());
		foreach ($labels as $label) {
			$this->labelMapper->delete($label);
		}

        return parent::delete($entity);
    }

    public function isOwner($userId, $boardId) {
        $board = $this->find($boardId);
        return ($board->getOwner() === $userId);
    }

    public function findBoardId($id) {
        return $id;
    }


}