<?php

namespace app\queue\utils;


class XunfeiFanyi
{

    protected $error = "";

    public function tocurl($url, $header, $content)
    {
        $ch = curl_init();
        if(substr($url,0,5)=='https'){
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 跳过证书检查
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);  // 从证书中检查SSL加密算法是否存在
            curl_setopt($ch, CURLOPT_SSLVERSION, 1);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $url);
        if (is_array($header)) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        }
        curl_setopt($ch, CURLOPT_POST, true);
        if (!empty($content)) {
            if (is_array($content)) {
                curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($content));
            } else if (is_string($content)) {
                curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
            }
        }
        $response = curl_exec($ch);
        $error=curl_error($ch);
        //var_dump($error);
        if($error){
            die($error);
        }
        $header = curl_getinfo($ch);
        curl_close($ch);
        $data = array('header' => $header,'body' => $response);
        return $data;
    }


    public function xfyun($text = "中华人民共和国于1949年成立", $from = "cn", $to = "en") 
    {
		//在控制台-我的应用-机器翻译获取
        $app_id = "3d46198c";
		//在控制台-我的应用-机器翻译获取
        $api_sec = "ZWY2MmUyNjJjYmFkOTFlYTVmYWVhMGYy";
		//在控制台-我的应用-机器翻译获取
        $api_key = "b6d805f240176ecaea85130cb5f2bca1";
		// 机器翻译接口地址
        $url = "https://ntrans.xfyun.cn/v2/ots";
        //body组装
        // $text = "中华人民共和国于1949年成立";//待翻译文本
        $body = json_encode($this->getBody($app_id, $from, $to, $text));

        // 组装http请求头
        $date =gmdate('D, d M Y H:i:s') . ' GMT';

        $digestBase64  = "SHA-256=".base64_encode(hash("sha256", $body, true));
        $builder = sprintf("host: %s
date: %s
POST /v2/ots HTTP/1.1
digest: %s", "ntrans.xfyun.cn", $date, $digestBase64);
        // echo($builder);
        $sha = base64_encode(hash_hmac("sha256", $builder, $api_sec, true));

        $authorization = sprintf("api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"", $api_key,"hmac-sha256",
            "host date request-line digest", $sha);

        $header = [
            "Authorization: ".$authorization,
            'Content-Type: application/json',
            'Accept: application/json,version=1.0',
            'Host: ntrans.xfyun.cn',
            'Date: ' .$date,
            'Digest: '.$digestBase64
        ];
        $response = $this->tocurl($url, $header, $body);

        // var_dump($response['body']);
        return $response;
    }


    public function getBody($app_id, $from, $to, $text) 
    {
        $common_param = [
            'app_id'   => $app_id
        ];

        $business = [
            'from' => $from,
            'to'   => $to,
        ];

        $data = [
            "text" => base64_encode($text)
        ];

        return $body = [
            'common' => $common_param,
            'business' => $business,
            'data' => $data
        ];
    }
    
    // 翻译
    public function fanyi($text = "", $from = "", $to = "")
    {
        try {
            $res = $this->xfyun($text, $from, $to);
            $data = json_decode($res["body"], true);
            if ($data["code"] === 0) {
                return $data["data"]["result"];
            } else {
                $this->error = $data["message"];
                return false;
            }
        } catch (\Throwable $th) {
            $this->error = $th->getMessage();
            return false;
        }
    }

    // 异常
    public function error()
    {
        return $this->error;
    }

}