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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\IqrfAppModule\Model;

use Nette;

/**
 * Parser for DPA OS responses
 */
class OsParser {

    use Nette\SmartObject;

    /**
     * Parse DPA OS response
     * @param string $packet DPA packet
     * @return array
     */
    public function parse(string $packet) {
        $data = explode('.', $packet);
        $pcmd = $data[3];
        switch ($pcmd) {
            case '80':
                return $this->parseReadInfo($packet);
        }
    }

    /**
     * Parse response to DPA OS - "Read info" request
     * @param string $packet DPA packet response
     * @return array Information about DCTR module
     */
    public function parseReadInfo(string $packet) {
        $data = [];
        $trTypes = [0 => '52D', 1 => '58D-RJ', 2 => '72D', 3 => '53D', 8 => '54D', 9 => '55D', 10 => '56D', 11 => '76D'];
        $mcuTypes = [3 => 'PIC16F886', 4 => 'PIC16F1938'];
        $packetArray = explode('.', $packet);
        $data['ModuleId'] = strtoupper($packetArray[11] . $packetArray[10] . $packetArray[9] . $packetArray[8]);
        $data['OsVersion'] = (hexdec($packetArray[12]) >> 4) . '.0' . (hexdec($packetArray[12]) & 0x0f) . 'D';
        $trType = hexdec($packetArray[13]) >> 4;
        if (array_key_exists($trType, $trTypes)) {
            $data['TrType'] = ((hexdec($packetArray[11]) & 0x80) ? 'DCTR-' : 'TR-') . $trTypes[$trType];
        } else {
            $data['TrType'] = 'UNKNOWN';
        }
        $mcuType = hexdec($packetArray[13]) & 7;
        $data['McuType'] = array_key_exists($mcuType, $mcuTypes) ? $mcuTypes[$mcuType] : 'UNKNOWN';
        $data['OsBuild'] = $packetArray[14] . $packetArray[15];
        $data['Rssi'] = hexdec($packetArray[16]) - 130;
        $data['SupplyVoltage'] = number_format((261.12 / (127 - hexdec($packetArray[17]))), 2, '.', '') . ' V';
        $data['Flags'] = $packetArray[18];
        $data['SlotLimits'] = $packetArray[19];
        return $data;
    }

}