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<?php

/**
 * Copyright 2017 MICRORISC s.r.o.
 * Copyright 2017 IQRF Tech s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

declare(strict_types=1);

namespace App\ServiceModule\Model;

use App\Model\CommandManager;
use App\ServiceModule\Model\NotSupportedInitSystemException;
use Nette;

/**
 * Tool for managing services.
 */
class ServiceManager {

    use Nette\SmartObject;

    /**
     * @var string Init daemon
     */
    private $initDaemon;

    /**
     * @var CommandManager Command Manager
     */
    private $commandManager;

    /**
     * Constructor
     * @param string $initDaemon Init daemon
     * @param CommandManager $commandManager Command manager
     */
    public function __construct(string $initDaemon, CommandManager $commandManager) {
        $this->initDaemon = $initDaemon;
        $this->commandManager = $commandManager;
    }

    /**
     * Start IQRF daemon
     * @throws NotSupportedInitSystemException
     */
    public function start() {
        switch ($this->initDaemon) {
            case 'docker-supervisor':
                $cmd = 'supervisorctl start iqrf-daemon';
                break;
            case 'systemd':
                $cmd = 'systemctl start iqrf-daemon.service';
                break;
            default:
                throw new NotSupportedInitSystemException();
        }
        return $this->commandManager->send($cmd, true);
    }

    /**
     * Stop IQRF daemon
     * @throws NotSupportedInitSystemException
     */
    public function stop() {
        switch ($this->initDaemon) {
            case 'docker-supervisor':
                $cmd = 'supervisorctl stop iqrf-daemon';
                break;
            case 'systemd':
                $cmd = 'systemctl stop iqrf-daemon.service';
                break;
            default:
                throw new NotSupportedInitSystemException();
        }
        return $this->commandManager->send($cmd, true);
    }

    /**
     * Retart IQRF daemon
     * @throws NotSupportedInitSystemException
     */
    public function restart() {
        switch ($this->initDaemon) {
            case 'docker-supervisor':
                $cmd = 'supervisorctl restart iqrf-daemon';
                break;
            case 'systemd':
                $cmd = 'systemctl restart iqrf-daemon.service';
                break;
            default:
                throw new NotSupportedInitSystemException();
        }
        return $this->commandManager->send($cmd, true);
    }

    /**
     * Get status of IQRF daemon
     * @throws NotSupportedInitSystemException
     */
    public function getStatus() {
        switch ($this->initDaemon) {
            case 'docker-supervisor':
                $cmd = 'supervisorctl status iqrf-daemon';
                break;
            case 'systemd':
                $cmd = 'systemctl status iqrf-daemon.service';
                break;
            default:
                throw new NotSupportedInitSystemException();
        }
        return $this->commandManager->send($cmd, true);
    }

}