<?php
// +----------------------------------------------------------------------
// | Laravel框架 [ Laravel ]
// +----------------------------------------------------------------------
// | 版权所有 2017~2021 Laravel研发中心
// +----------------------------------------------------------------------
// | 官方网站: http://www.laravel.cn
// +----------------------------------------------------------------------
// | Author: wesmiler <12345678@qq.com>
// +----------------------------------------------------------------------

namespace App\Services;

use App\Models\ConfigModel;

/**
 * 拍照图片-服务类
 * @author wesmiler
 * @since 2020/11/11
 * Class ItemService
 * @package App\Services
 */
class SnapshotService extends BaseService
{
    protected $uuid = null;
    protected $appKey = null;
    protected $appSecret = null;
    protected $token = null;
    protected $movedCard = 5;
    protected $apiUrl = 'https://rds.xmeye.net/v1';
    protected $apiUrls = [
        // 设备登录 token参数
        'login'=>'/rtc/device/login/%s',
        // 获取配置 token参数
        'getconfig'=> '/rtc/device/getconfig/%s',
        // 获取拍照设置 token参数
        'setconfig'=> '/rtc/device/setconfig/%s',
    ];
    public static $instance = null;
    public function __construct()
    {
        $this->model = new ConfigModel();

        $config = $this->model->where(['config_group_id'=> 5,'status'=> 1])
            ->select(['value','code'])
            ->get()
            ->keyBy('code');

        $config = $config? $config->toArray() : [];
        if(!$config){
            throw new \Exception('缺少参数配置');
        }


        $this->uuid = $config['snapshot_uuid']['value']? $config['snapshot_uuid']['value'] : '';
        $this->appKey = $config['snapshot_appkey']['value']? $config['snapshot_appkey']['value'] : $this->appKey;
        $this->appSecret = $config['snapshot_appsecret']['value']? $config['snapshot_appsecret']['value'] : $this->appSecret;
        $this->apiUrl = $config['snapshot_apiurl']['value']? $config['snapshot_apiurl']['value'] : $this->apiUrl;
    }

    /**
     * 入口
     * @return SnapshotService|null
     */
    public static function make(){
        if(self::$instance == null){
            self::$instance = new SnapshotService();
        }

        return self::$instance;
    }

    public function requestApi(string $apiName, array $params=[]){
        if(!isset($this->apiUrls[$apiName])){
            return false;
        }

        $url = $this->apiUrl.$this->apiUrls[$apiName];


    }

    /**
     * 获取签名
     * @param int $movedCard
     * @return string
     */
    public function makeSign(int $movedCard  = 0){
        $movedCard = $movedCard? $movedCard : $this->movedCard;
        $signStr = $this->uuid.''.$this->appKey.''.$this->appSecret.'00000011461748332239';
//        $signStr = $this->uuid.''.$this->appKey.''.$this->appSecret.$this->getTimeMillis();
        $bytes = $this->getBytes($signStr);
        $changeBytes = $this->change($signStr, $movedCard);
        $mergeBytes = $this->mergeByte($bytes, $changeBytes);
        return md5($this->byteToStr($mergeBytes));
    }

    public function getTimeMillis(){
        $rand = rand(1,9999999);
        $len = mb_strlen($rand, 'utf8');
        $rand = $len<7? str_repeat('0', 7-$len).$rand : $rand;
        return $rand.''.time().rand(100,999);
    }

    public function getBytes($string) {
        $bytes = array();
        for($i = 0; $i < strlen($string); $i++){
            $bytes[] = ord(iconv('utf8','ISO-8859-1', $string[$i]));
        }
        return $bytes;
    }

    public static function byteToStr($bytes) {
        $str = '';
        foreach($bytes as $ch) {
            $str .= chr($ch);
        }

        return $str;
    }

    /**
     * 简单移位运算
     * @param $str
     * @param int $moveCard
     * @return array
     */
    public function change($str, int $moveCard ){
        $bytes = $this->getBytes($str);
        $len = count($bytes);
          for ($i = 0; $i < $len; $i++) {
              $tempBytes = (($i % $moveCard) > (($len - $i) % $moveCard)) ? $bytes[$i] : $bytes[$len - ($i + 1)];
              $bytes[$i] = $bytes[$len - ($i + 1)];
              $bytes[$len - ($i + 1)] = $tempBytes;
        }
          return $bytes;
    }

    /**
     * 合并
     * @param array $bytes
     * @param array $bytes1
     * @return array
     */
    public function mergeByte(array $bytes, array $bytes1 ){
        $tempBytes = [];
        $len = count($bytes);
        $len1 = count($bytes1)*2;
        for ($i = 0; $i < $len; $i++) {
            $tempBytes[$i] = $bytes[$i];
            $tempBytes[$len1 - 1 - $i] = $bytes1[$i];
        }
        ksort($tempBytes);
        return $tempBytes;
    }
}