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import websocket
import datetime
import hashlib
import base64
import hmac
import json
from urllib.parse import urlencode
import time
import ssl
from wsgiref.handlers import format_date_time
from datetime import datetime
from time import mktime
STATUS_FIRST_FRAME = 0  # 第一帧的标识
STATUS_CONTINUE_FRAME = 1  # 中间帧标识
STATUS_LAST_FRAME = 2  # 最后一帧的标识
finalResult = ""  # 声明全局
class Ws_Param(object):
    def __init__(self, APPID, APIKey, APISecret, AudioFile):
        self.APPID = APPID
        self.APIKey = APIKey
        self.APISecret = APISecret
        self.AudioFile = AudioFile
        self.CommonArgs = {"app_id": self.APPID}
        self.BusinessArgs = {"domain": "iat", "language": "zh_cn", "accent": "mandarin", "vinfo": 1, "vad_eos": 10000}
    def create_url(self):
        url = 'wss://ws-api.xfyun.cn/v2/iat'
        now = datetime.now()
        date = format_date_time(mktime(now.timetuple()))
        signature_origin = "host: ws-api.xfyun.cn\n"
        signature_origin += "date: " + date + "\n"
        signature_origin += "GET /v2/iat HTTP/1.1"
        
        signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'), hashlib.sha256).digest()
        signature_sha = base64.b64encode(signature_sha).decode('utf-8')
        
        authorization_origin = "api_key=%s, algorithm=hmac-sha256, headers=host date request-line, signature=%s" % (self.APIKey, signature_sha)
        authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode('utf-8')
        
        url = url + '?' + urlencode({"authorization": authorization, "date": date, "host": "ws-api.xfyun.cn"})
        return url
def on_message(ws, message):
    global finalResult
    try:
        code = json.loads(message)["code"]
        sid = json.loads(message)["sid"]
        if code != 0:
            errMsg = json.loads(message)["message"]
            print("sid:%s call error:%s code is:%s" % (sid, errMsg, code))
        else:
            data = json.loads(message)["data"]["result"]["ws"]
            result = ""
            for i in data:
                for w in i["cw"]:
                    result += w["w"]
            print("sid:%s call success!,data is:%s" % (sid, json.dumps(data, ensure_ascii=False)))
            finalResult += result
    except Exception as e:
        print("receive msg,but parse exception:", e)
def on_error(ws, error):
    print("### error:", error)
def on_close(ws):
    print("### closed ###")
def on_open(ws):
    def run(*args):
        frameSize = 8000  # 每一帧的音频大小
        interval = 0.04  # 发送音频间隔(单位:s)
        status = STATUS_FIRST_FRAME
        
        with open(wsParam.AudioFile, "rb") as fp:
            while True:
                buf = fp.read(frameSize)
                if not buf:
                    status = STATUS_LAST_FRAME
                if status == STATUS_FIRST_FRAME:
                    d = {
                        "common": wsParam.CommonArgs,
                        "business": wsParam.BusinessArgs,
                        "data": {
                            "status": 0,
                            "format": "audio/L16;rate=16000",
                            "audio": str(base64.b64encode(buf), 'utf-8'),
                            "encoding": "raw"
                        }
                    }
                    ws.send(json.dumps(d))
                    status = STATUS_CONTINUE_FRAME
                elif status == STATUS_CONTINUE_FRAME:
                    d = {
                        "data": {
                            "status": 1,
                            "format": "audio/L16;rate=16000",
                            "audio": str(base64.b64encode(buf), 'utf-8'),
                            "encoding": "raw"
                        }
                    }
                    ws.send(json.dumps(d))
                elif status == STATUS_LAST_FRAME:
                    d = {
                        "data": {
                            "status": 2,
                            "format": "audio/L16;rate=16000",
                            "audio": str(base64.b64encode(buf), 'utf-8'),
                            "encoding": "raw"
                        }
                    }
                    ws.send(json.dumps(d))
                    time.sleep(1)
                    break
                time.sleep(interval)
        ws.close()
    thread.start_new_thread(run, ())
   
  
   
请注意：以上代码仅为示例，具体参数配置请根据实际需求进行调整。代码中包含了WebSocket连接的实现，包括消息处理、错误处理、连接关闭等功能。如果需要更详细的功能扩展或优化，请根据实际应用场景进行调整。

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