<?php
// +----------------------------------------------------------------------
// | likeadmin快速开发前后端分离管理后台（PHP版）
// +----------------------------------------------------------------------
// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
// | 开源版本可自由商用，可去除界面版权logo
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// | github下载：https://github.com/likeshop-github/likeadmin
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// | likeadmin团队 版权所有 拥有最终解释权
// +----------------------------------------------------------------------
// | author: likeadminTeam
// +----------------------------------------------------------------------

namespace app\api\controller;

use IFlytek\Xfyun\Speech\ChatClient;
use WebSocket\Client;

/**
 * 讯飞
 * Class WechatController
 */
class XunFeiController extends BaseApiController
{
    public array $notNeedLogin = ['chat', 'iat'];

    private $app_id='2eda6c2e';

    private $api_key='12ec1f9d113932575fc4b114a2f60ffd';

    private $api_secret='MDEyMzE5YTc5YmQ5NjMwOTU1MWY4N2Y2';

    public function chat()
    {
        header('X-Accel-Buffering: no');
        $parmas=$this->request->param('content');
        if(empty($parmas)){
            return $this->success('success');
        }
        $chat=new ChatClient($this->app_id,$this->api_key,$this->api_secret);
        $client = new Client($chat->assembleAuthUrl('wss://spark-api.xf-yun.com/v2.1/chat'));
        // 连接到 WebSocket 服务器
        if ($client) {
            // 发送数据到 WebSocket 服务器
            $data = $this->getBody($this->app_id,$parmas);

            $client->send($data);
            // 从 WebSocket 服务器接收数据
            $answer = "";
            while(true){
                $response = $client->receive();
                $resp = json_decode($response,true);
                $code = $resp["header"]["code"];
                // echo "从服务器接收到的数据： " . $response;
                if(0 == $code){
                    $status = $resp["header"]["status"];
                    if($status != 2){
                        $content = $resp['payload']['choices']['text'][0]['content'];
                        $answer .= $content;
                        print($answer);
                        ob_flush(); // 刷新输出缓冲区
                        flush(); // 刷新系统输出缓冲区
                    }else{
                        $content = $resp['payload']['choices']['text'][0]['content'];
                        $answer .= $content;
                        $total_tokens = $resp['payload']['usage']['text']['total_tokens'];
                        print("\n本次消耗token用量：\n");
                        print($total_tokens);
                        ob_flush(); // 刷新输出缓冲区
                        flush(); // 刷新系统输出缓冲区
                        break;
                    }
                }else{
                    return $this->fail( "服务返回报错".$response);
                    break;
                }
            }
            ob_flush(); // 刷新输出缓冲区
            flush(); // 刷新系统输出缓冲区
            return $this->success('success');

        } else {
            return $this->fail('无法连接到 WebSocket 服务器');
        }
    }

    //构造参数体
    function getBody($appid,$question){
        $header = array(
            "app_id" => $appid,
            "uid" => "1"
        );
        
        $parameter = array(
            "chat" => array(
                "domain" => "generalv2",
                "temperature" => 0.5,
                "max_tokens" => 1024
            )
        );
        
        $payload = array(
            "message" => array(
                "text" => array(
                    array("role" => "user", "content" => $question)
                )
            )
        );
        
        $json_string = json_encode(array(
            "header" => $header,
            "parameter" => $parameter,
            "payload" => $payload
        ));

        return $json_string;

    }

    public function iat()
    {
        $appid = "fa185cd6";
        $apiSecret = "1474397d85f34828194622aab80f1e51";
        $apiKey = "ZjQOYjhjMmE2NmMzYzhiMjU30GE1NjJl";

        $hostUrl = "ws://iat-api.xfyun.cn/v2/iat";

        // 请填写您的音频文件路径
        $file = storage_path() . '/app/public/audio/1675996119143.mp3';

        $st = microtime(true);

        $authUrl = $this->assembleAuthUrl($hostUrl, $apiKey, $apiSecret);

        $client = new Client($authUrl);

        //打开音频文件
        $audioFile = fopen($file, 'rb');
        if ($audioFile === false) {
            throw new \Exception('open file error');
        }

        $frameSize = 1280; //每一帧的音频大小
        $intervel = 40 * 1000; //发送音频间隔
        $status = 0;
 

        // 连接到 WebSocket 服务器
        if ($client) {
            //发送数据
            while (true) {
                $len = fread($audioFile, $frameSize);
                if ($len === false) {
                    break;
                }
                if ($len === '') { //文件读取完了，改变status = STATUS_LAST_FRAME
                    $status = 2;
                }

                switch ($status) {
                    case 0: //发送第一帧音频，带business 参数
                        $frameData = array(
                            'common' => array(
                                'app_id' => $appid //appid 必须带上，只需第一帧发送
                            ),
                            'business' => array( //business 参数，只需一帧发送
                                'language' => 'en_us',
                                'domain' => 'iat',
                                //  'accent' => 'mandarin'
                            ),
                            'data' => array(
                                'status' => 0,
                                'format' => 'audio/L16;rate=16000',
                                'audio' => base64_encode($len),
                                'encoding' => 'lame'
                            )
                        );
                        $conn->send(json_encode($frameData));
                        $status = 1;
                        break;
                    case 1:
                        $frameData = array(
                            'data' => array(
                                'status' => 1,
                                'format' => 'audio/L16;rate=16000',
                                'audio' => base64_encode($len),
                                'encoding' => 'raw'
                            )
                        );
                        $conn->send(json_encode($frameData));
                        break;
                    case 2:
                        $frameData = array(
                            'data' => array(
                                'status' => 2,
                                'format' => 'audio/L16;rate=16000',
                                'audio' => base64_encode($len),
                                'encoding' => 'raw'
                            )
                        );
                        $conn->send(json_encode($frameData));
                        break 2;
                }

                //模拟音频采样间隔
                usleep($intervel);
            }

            //获取返回的数据
            while (true) {
                $msg = $client->receive();
                if ($msg === null) {
                    break;
                }

                $resp = json_decode($msg, true);

                $code = $resp['code'];
                $message = $resp['message'];
                $data = $resp['data'];
                $result = $data['result'];
                $status = $data['status'];
                $sid = $resp['sid'];

                if ($code != 0) {
                    echo sprintf('%d %s %f', $code, $message, microtime(true) - $st);
                    break;
                }


                var_dump($resp, $result);


                if ($status === 2) {
                    echo sprintf('%d %s %f', $code, $message, microtime(true) - $st);
                    break;
                }
            }
        } else {
            echo "无法连接到 WebSocket 服务器";
        }

       
        fclose($audioFile);
        usleep(1); //等待数据接收完成
    }

    function assembleAuthUrl($hostUrl, $apiKey, $apiSecret)
    {
        $ul = parse_url($hostUrl);
        $date = gmdate('D, d M Y H:i:s T');
        $signString = array(
            'host: ' . $ul['host'],
            'date: ' . $date,
            'GET ' . $ul['path'] . ' HTTP/1.1'
        );
        $sgin = implode("\n", $signString);
        $sha = $this->HmacWithShaTobase64("hmac-sha256", $sgin, $apiSecret);
    
        $authUrl = sprintf('api_key="%s", algorithm="%s", headers="%s", signature="%s"',
            $apiKey, "hmac-sha256", "host date request-line", $sha);
        $authorization = base64_encode($authUrl);
        $v = array(
            'host' => $ul['host'],
            'date' => $date,
            'authorization' => $authorization
        );
        $query = http_build_query($v);
        $callurl = $hostUrl . '?' . $query;
        return $callurl;
    }

    function HmacWithShaTobase64($algorithm, $data, $key)
    {
        $encodeData = hash_hmac('sha256', $data, $key, true);
        return base64_encode($encodeData);
    }

}