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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\GatewayModule\Model;

use App\IqrfAppModule\Model\IqrfAppManager;
use App\Model\CommandManager;
use Nette;

/**
 * Tool for getting information about this gateway
 */
class InfoManager {

    use Nette\SmartObject;

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

    /**
     * @var IqrfAppManager
     */
    private $iqrfAppManager;

    /**
     * Constructor
     * @param CommandManager $commandManager Command manager
     * @param IqrfAppManager $iqrfAppManager
     */
    public function __construct(CommandManager $commandManager, IqrfAppManager $iqrfAppManager) {
        $this->commandManager = $commandManager;
        $this->iqrfAppManager = $iqrfAppManager;
    }

    /**
     * Get IPv4 and IPv6 addresses of the gateway
     * @return array IPv4 and IPv6 addresses
     */
    public function getIpAddresses() {
        $addresses = [];
        $lsInterfaces = $this->commandManager->send('ls /sys/class/net | awk \'{ print $0 }\'', true);
        $interfaces = explode(PHP_EOL, $lsInterfaces);
        foreach ($interfaces as $interface) {
            if ($interface === 'lo') {
                continue;
            }
            $cmd = 'ip a s ' . $interface . ' | grep inet | grep global | grep -v temporary | awk \'{print $2}\'';
            $output = $this->commandManager->send($cmd, true);
            if (!empty($output)) {
                $addresses[$interface] = explode(PHP_EOL, $output);
            }
        }
        return $addresses;
    }

    /**
     * Get MAC addresses of the gateway
     * @return array MAC addresses array
     */
    public function getMacAddresses() {
        $addresses = [];
        $lsInterfaces = $this->commandManager->send('ls /sys/class/net | awk \'{ print $0 }\'', true);
        $interfaces = explode(PHP_EOL, $lsInterfaces);
        foreach ($interfaces as $interface) {
            if ($interface === 'lo') {
                continue;
            }
            $cmd = 'cat /sys/class/net/' . $interface . '/address';
            $addresses[$interface] = $this->commandManager->send($cmd, true);
        }
        return $addresses;
    }

    /**
     * Get version of the daemon
     * @return string IQRF Daemon version
     */
    public function getDaemonVersion() {
        $cmd = 'iqrf_startup version';
        $daemonExistence = $this->commandManager->commandExist('iqrf_startup');
        if (!$daemonExistence) {
            return 'none';
        }
        $result = $this->commandManager->send($cmd);
        if (!empty($result)) {
            return $result;
        }
        return 'unknown';
    }

    /**
     * Get hostname of the gateway
     * @return string Hostname
     */
    public function getHostname() {
        $cmd = 'hostname -f';
        return $this->commandManager->send($cmd);
    }

    /**
     * Get information about the Coordinator
     * @return array Information about the Coordinator
     */
    public function getCoordinatorInfo() {
        $response = $this->iqrfAppManager->sendRaw('00.00.02.00.FF.FF');
        return $this->iqrfAppManager->parseResponse($response);
    }

}