<?php

declare(strict_types=1);


/**
 * Nextcloud - Social Support
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Maxence Lange <maxence@artificial-owl.com>
 * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
 * @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\Social\Db;

use DateTime;
use Exception;
use OCA\Social\Exceptions\ActorDoesNotExistException;
use OCA\Social\Exceptions\SocialAppConfigException;
use OCA\Social\Model\ActivityPub\Actor\Person;
use OCP\DB\QueryBuilder\IQueryBuilder;

class ActorsRequest extends ActorsRequestBuilder {


	/**
	 * Create a new Person in the database.
	 * @throws SocialAppConfigException
	 */
	public function create(Person $actor): void {
		$actor->setId($this->configService->getSocialUrl() . '@' . $actor->getPreferredUsername());
		$qb = $this->getActorsInsertSql();

		$qb->setValue('id', $qb->createNamedParameter($actor->getId()))
		   ->setValue('id_prim', $qb->createNamedParameter($this->prim($actor->getId())))
		   ->setValue('user_id', $qb->createNamedParameter($actor->getUserId()))
		   ->setValue('name', $qb->createNamedParameter($actor->getName()))
		   ->setValue('summary', $qb->createNamedParameter($actor->getSummary()))
		   ->setValue('avatar_version', $qb->createNamedParameter($actor->getAvatarVersion()))
		   ->setValue(
			   'preferred_username', $qb->createNamedParameter($actor->getPreferredUsername())
		   )
		   ->setValue('public_key', $qb->createNamedParameter($actor->getPublicKey()))
		   ->setValue('private_key', $qb->createNamedParameter($actor->getPrivateKey()))
		   ->setValue(
			   'creation',
			   $qb->createNamedParameter(new DateTime('now'), IQueryBuilder::PARAM_DATE)
		   );

		$qb->executeStatement();
	}

	public function update(Person $actor): void {
		$qb = $this->getActorsUpdateSql();
		$qb->set('avatar_version', $qb->createNamedParameter($actor->getAvatarVersion()));
		$this->limitToIdString($qb, $actor->getId());

		$qb->executeStatement();
	}

	public function refreshKeys(Person $actor): void {
		$qb = $this->getActorsUpdateSql();
		$qb->set('public_key', $qb->createNamedParameter($actor->getPublicKey()))
		   ->set('private_key', $qb->createNamedParameter($actor->getPrivateKey()));

		try {
			$qb->set(
				'creation',
				$qb->createNamedParameter(new DateTime('now'), IQueryBuilder::PARAM_DATE)
			);
		} catch (Exception $e) {
		}

		$this->limitToIdString($qb, $actor->getId());

		$qb->executeStatement();
	}


	/**
	 * Return Actor from database based on the username
	 *
	 * @throws ActorDoesNotExistException
	 * @throws SocialAppConfigException
	 */
	public function getFromUsername(string $username): Person {
		$qb = $this->getActorsSelectSql();
		$this->limitToPreferredUsername($qb, $username);

		$cursor = $qb->executeQuery();
		$data = $cursor->fetch();
		$cursor->closeCursor();

		if ($data === false) {
			throw new ActorDoesNotExistException('Actor not found');
		}

		return $this->parseActorsSelectSql($data);
	}

	/**
	 * @throws ActorDoesNotExistException
	 * @throws SocialAppConfigException
	 */
	public function getFromId(string $id): Person {
		$qb = $this->getActorsSelectSql();
		$this->limitToIdString($qb, $id);

		$cursor = $qb->executeQuery();
		$data = $cursor->fetch();
		$cursor->closeCursor();

		if ($data === false) {
			throw new ActorDoesNotExistException('Actor not found');
		}

		return $this->parseActorsSelectSql($data);
	}


	/**
	 * return Actor from database, based on the userId of the owner.
	 *
	 * @param string $userId
	 *
	 * @return Person
	 * @throws ActorDoesNotExistException
	 * @throws SocialAppConfigException
	 */
	public function getFromUserId(string $userId): Person {
		$qb = $this->getActorsSelectSql();
		$this->limitToUserId($qb, $userId);

		$cursor = $qb->executeQuery();
		$data = $cursor->fetch();
		$cursor->closeCursor();

		if ($data === false) {
			throw new ActorDoesNotExistException('Actor not found');
		}

		return $this->parseActorsSelectSql($data);
	}


	/**
	 * @return Person[]
	 * @throws SocialAppConfigException
	 */
	public function getAll(): array {
		$qb = $this->getActorsSelectSql();

		$accounts = [];
		$cursor = $qb->executeQuery();
		while ($data = $cursor->fetch()) {
			$accounts[] = $this->parseActorsSelectSql($data);
		}
		$cursor->closeCursor();

		return $accounts;
	}


	/**
	 * @return Person[]
	 * @throws SocialAppConfigException
	 */
	public function searchFromUsername(string $search): array {
		$qb = $this->getActorsSelectSql();
		$this->searchInPreferredUsername($qb, $search);

		$accounts = [];
		$cursor = $qb->executeQuery();
		while ($data = $cursor->fetch()) {
			$accounts[] = $this->parseActorsSelectSql($data);
		}
		$cursor->closeCursor();

		return $accounts;
	}
}