import QMUtil  from "../../util.js";

let { config } = QMUtil;
let btnStatus = "UNDEFINED"; // "UNDEFINED" "CONNECTING" "PLAY" "STOP"

const audioPlayer = new AudioPlayer("../");
audioPlayer.onPlay = () => {
  btnStatus = "PLAY";
  window.changeVideo();
};

audioPlayer.onStop = (audioDatas) => {
  if(btnStatus === "PLAY"){
    btnStatus="STOP";
    window.playOver();
  }
};
function getWebSocketUrl(apiKey, apiSecret) {
  var url = "wss://tts-api.xfyun.cn/v2/tts";
  var host = location.host;
  var date = new Date().toGMTString();
  var algorithm = "hmac-sha256";
  var headers = "host date request-line";
  var signatureOrigin = `host: ${host}\ndate: ${date}\nGET /v2/tts HTTP/1.1`;
  var signatureSha = CryptoJS.HmacSHA256(signatureOrigin, apiSecret);
  var signature = CryptoJS.enc.Base64.stringify(signatureSha);
  var authorizationOrigin = `api_key="${apiKey}", algorithm="${algorithm}", headers="${headers}", signature="${signature}"`;
  var authorization = btoa(authorizationOrigin);
  url = `${url}?authorization=${authorization}&date=${date}&host=${host}`;
  return url;
}

let ttsWS;
function connectWebSocket(str) {
  const url = getWebSocketUrl(config.API_KEY, config.API_SECRET);
  if ("WebSocket" in window) {
    ttsWS = new WebSocket(url);
  } else if ("MozWebSocket" in window) {
    ttsWS = new MozWebSocket(url);
  } else {
    alert("浏览器不支持WebSocket");
    return;
  }
  btnStatus = "CONNECTING";
  
  ttsWS.onopen = (e) => {
    audioPlayer.start({
      autoPlay: true,
      sampleRate: 16000,
      resumePlayDuration: 1000
    });
    btnStatus = "PLAY";
    var params = {
      common: {
        app_id: config.APPID,
      },
      business: {
        aue: "raw",
        auf: "audio/L16;rate=16000",
        vcn: "x4_mengmengneutral",
        speed: 60,  //语速
        volume: 80,  //音量
        pitch: 50,  //音高
        tte:"UTF8",
      },
      data: {
        status: 2,
        text: Base64.encode(str),
      },
    };
    
    ttsWS.send(JSON.stringify(params));
  };
  ttsWS.onmessage = (e) => {
    let jsonData = JSON.parse(e.data);
    // 合成失败
    if (jsonData.code !== 0) {
      console.error(jsonData);
      btnStatus = "UNDEFINED";
      return;
    }
    audioPlayer.postMessage({
      type: "base64",
      data: jsonData.data.audio,
      isLastData: jsonData.data.status === 2,
    });
    if (jsonData.code === 0 && jsonData.data.status === 2) {
      ttsWS.close();
    }
  };
  ttsWS.onerror = (e) => {
    console.error(e);
  };
  ttsWS.onclose = (e) => {
    // console.log(e);
  };
}

window.stopTTS = function(){
  btnStatus = "UNDEFINED";
  ttsWS?.close();
  audioPlayer.reset();
  audioPlayer.stop();
  window.changeBg();
}

window.startTTS = function(str) {
  stopTTS();
  // 开始合成
  connectWebSocket(str);
}