<?php

declare(strict_types=1);
/**
 * @copyright Copyright (c) 2018 Joas Schilling <coding@schilljs.com>
 *
 * @author Joas Schilling <coding@schilljs.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\Talk\Migration;

use Doctrine\DBAL\Platforms\PostgreSQL94Platform;
use Doctrine\DBAL\Types\Types;
use OCP\DB\ISchemaWrapper;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\Migration\SimpleMigrationStep;
use OCP\Migration\IOutput;

class Version2001Date20180103144447 extends SimpleMigrationStep {

	/** @var IDBConnection */
	protected $connection;

	/** @var IConfig */
	protected $config;

	public function __construct(IDBConnection $connection,
								IConfig $config) {
		$this->connection = $connection;
		$this->config = $config;
	}


	/**
	 * @param IOutput $output
	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
	 * @param array $options
	 * @return null|ISchemaWrapper
	 * @since 13.0.0
	 */
	public function changeSchema(IOutput $output, \Closure $schemaClosure, array $options): ?ISchemaWrapper {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		$table = $schema->getTable('talk_rooms');

		if (!$table->hasColumn('active_since')) {
			$table->addColumn('active_since', Types::DATETIME_MUTABLE, [
				'notnull' => false,
			]);
			$table->addColumn('active_guests', Types::INTEGER, [
				'notnull' => true,
				'length' => 4,
				'default' => 0,
				'unsigned' => true,
			]);
		}

		$table = $schema->getTable('talk_participants');

		if (!$table->hasColumn('user_id')) {
			$table->addColumn('user_id', Types::STRING, [
				'notnull' => false,
				'length' => 255,
			]);
			$table->addColumn('room_id', Types::INTEGER, [
				'notnull' => true,
				'length' => 11,
				'default' => 0,
				'unsigned' => true,
			]);
			$table->addColumn('last_ping', Types::INTEGER, [
				'notnull' => true,
				'length' => 11,
				'default' => 0,
				'unsigned' => true,
			]);
			$table->addColumn('session_id', Types::STRING, [
				'notnull' => true,
				'length' => 255,
				'default' => '0',
			]);
			$table->addColumn('participant_type', Types::SMALLINT, [
				'notnull' => true,
				'length' => 6,
				'default' => 0,
				'unsigned' => true,
			]);
			$table->addColumn('in_call', Types::BOOLEAN, [
				'default' => 0,
			]);
		}

		return $schema;
	}

	/**
	 * @param IOutput $output
	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
	 * @param array $options
	 * @since 13.0.0
	 */
	public function postSchemaChange(IOutput $output, \Closure $schemaClosure, array $options): void {
		if (version_compare($this->config->getAppValue('spreed', 'installed_version', '0.0.0'), '2.0.0', '<')) {
			// Migrations only work after 2.0.0
			return;
		}

		if (!$this->connection->getDatabasePlatform() instanceof PostgreSQL94Platform) {
			$update = $this->connection->getQueryBuilder();
			$update->update('talk_rooms')
				->set('active_since', 'activeSince')
				->set('active_guests', 'activeGuests');
			$update->executeStatement();

			$update = $this->connection->getQueryBuilder();
			$update->update('talk_participants')
				->set('user_id', 'userId')
				->set('room_id', 'roomId')
				->set('last_ping', 'lastPing')
				->set('session_id', 'sessionId')
				->set('participant_type', 'participantType')
				->set('in_call', 'inCall');
			$update->executeStatement();
		} else {
			$update = $this->connection->getQueryBuilder();
			$update->update('talk_rooms')
				->set('active_since', 'activesince')
				->set('active_guests', 'activeguests');
			$update->executeStatement();

			$update = $this->connection->getQueryBuilder();
			$update->update('talk_participants')
				->set('user_id', 'userid')
				->set('room_id', 'roomid')
				->set('last_ping', 'lastping')
				->set('session_id', 'sessionid')
				->set('participant_type', 'participanttype')
				->set('in_call', 'incall');
			$update->executeStatement();
		}
	}
}
