<?php
namespace hema\device\engine;

use think\facade\Cache;

/**
 * 易联云打印机驱动模块
 * 测试机型号：K4 - K7
 */
class Yilianyun extends Basics
{
    /**
    * 打印订单接口
    * $dev = 设备参数,$content=打印模板
    */
    public function print($dev,$content)
    {
        $content = $this->make_templet($content,$dev['prt_num']);//转换打印模板
        $params = $this->params();
        $params['machine_code'] = $dev['dev_id'];//打印机终端号
        $params['origin_id'] = (string)time();//订单编号
        $params['content'] = $content;//打印内容
        $result = json_decode($this->http_post_json($params,'/print/index'),true);
        sleep(1);//延时1秒
        if($result['error']!=0){
            $this->error = $result['error_description'];
            return false;
        }
        return $result;
    }
    
    /**
    * 授权绑定打印机
    */
    public function add($data)
    {
        $params = $this->params();
        $params['print_name'] = $data['dev_name'];//自定义打印机名称(可填)
        $params['machine_code'] = $data['dev_id'];//打印机终端号
        $params['msign'] = $data['dev_key'];//打印机终端密钥
        $result = json_decode($this->http_post_json($params,'/printer/addprinter'),true);
        if($result['error']!=0){
            $this->error = $result['error_description'];
            return false;
        }
        return $result;
    }
    
    /**
    * 删除授权绑定的打印机
    */
    public function delete($dev_id)
    {
        $params = $this->params();
        $params['machine_code'] = $dev_id;//打印机编号
        $result = json_decode($this->http_post_json($params,'/printer/deleteprinter'),true);
        if($result['error']!=0){
            $this->error = $result['error_description'];
            return false;
        }
        return $result;
    }
    
    /**
    * 获取打印机状态接口 
    */
    public function status($dev_id)
    {
        $params = $this->params();
        $params['machine_code'] = $dev_id;//打印机编号
        $res = json_decode($this->http_post_json($params,'/printer/getprintstatus'),true);
        sleep(1);//延时1秒
        if($res['error']==0){
            $msg = '离线';
            if($res['body']['state']==1){
                $msg = '正常';
            }
            if($res['body']['state']==2){
                $msg = '缺纸';
            }
            return $msg;
        }
        return '未知';
    }

    /**
    * 公共参数
    */
    private function params(){
        $time = time();         //请求时间
        return $params = [
            'client_id' => $this->config['app_key'],
            'access_token' => $this->getToken(),
            'timestamp' => $time,
            'sign' => $this->getSign($time),
            'id' => $this->uuid4(),
        ];
    }
    
    /**
    * 获取Token
    */
    private function getToken()
    {
        $data =  Cache::get('yilianyun_access_token',[]);
        $access_token = '';
        $time = time();
        $params = [
            'grant_type' => 'client_credentials',
            'client_id' => $this->config['app_key'],
            'timestamp' => $time,
            'sign' => $this->getSign($time),
            'id' => $this->uuid4(),
            'scope' => 'all'
        ];
        if(isset($data['access_token'])){
            $access_token = $data['access_token'];
            //token即将过期 提前10天获取
            $ext_time = $time + 10*24*60*60;
            if($data['expires_time'] < $ext_time){
                $result = json_decode($this->http_post_json($params,'/oauth/oauth'),true);
                if($result['error']==0){
                    $data = $result['body'];
                    $data['expires_time'] = $time + $result['body']['expires_in'];//过期时间戳
                    $access_token = $data['access_token'];
                    Cache::set('yilianyun_access_token',$data,30*24*60*60);//有效期30天
                }
            }
        }else{
            //第一次请求，或者缓存过期
            $result = json_decode($this->http_post_json($params,'/oauth/oauth'),true);
            if($result['error']==0){
               $data = $result['body'];
                $data['expires_time'] = $time + $result['body']['expires_in'];//过期时间戳
                $access_token = $data['access_token'];
                Cache::set('yilianyun_access_token',$data,30*24*60*60);//有效期30天
            }
        }
        return $access_token;
    }
    
    /**
    * 生成签名
    */
    private function getSign($timestamp)
    {
        return md5($this->config['app_key'] . $timestamp . $this->config['app_secret']);
    }

    /**
    * 生成uuid4
    */
    private function uuid4(){
        mt_srand((double)microtime() * 10000);
        $charid = strtolower(md5(uniqid(rand(), true)));
        $hyphen = '-';
        $uuidV4 =
            substr($charid, 0, 8) . $hyphen .
            substr($charid, 8, 4) . $hyphen .
            substr($charid, 12, 4) . $hyphen .
            substr($charid, 16, 4) . $hyphen .
            substr($charid, 20, 12);
        return $uuidV4;
    }
    
    
    //发送post请求
    /**
     * PHP发送Json对象数据
     * @return string
     */
    private function http_post_json($data,$url)
    {
        $url = $this->config['api_url'] . $url;
        $data = http_build_query($data);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检测
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/x-www-form-urlencoded'
        )); // 解决数据包大不能提交
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
        curl_setopt($ch, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循
        curl_setopt($ch, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $response;
    }

    /**
     * 制作订单模板
     * $data 订单数据
     * $n 打印份数
     * 58mm的机器,一行打印16个汉字,32个字母;
     */
    private function make_templet($data,$n)
    {
        $content = '<MN>'.$n.'</MN>';
        foreach ($data as $item){
            $row_arr = explode(',',$item);
            $row = $row_arr[0];
            for($m=1;$m<sizeof($row_arr);$m++){
                //字体
                $b_4 = ['<B>','<B1>','<B2>','<B3>','<B4>'];
                $b_8 = ['<B5>','<B6>','<B7>','<B8>'];
                $h_8 = ['<H5>','<H6>','<H7>','<H8>'];
                if(in_array($row_arr[$m],$b_4)){
                    $row = "<FB>" . $row . "</FB>";//加粗
                }elseif(in_array($row_arr[$m],$b_8)){
                    $row = "<FB><FS>" . $row . "</FS></FB>";//加粗字体放大一倍
                }elseif(in_array($row_arr[$m],$h_8)){
                    $row = "<FS>" . $row . "</FS>";
                }
                //居中
                if($row_arr[$m] == '<C>'){
                    $row = "<center>" . $row . "</center>";
                }
            }
            $content .= $row . "\n";
        }
        $content .= "\n\n";
        return $content;
    }
}