"""
azure voice service
"""
import json
import os
import time
import azure.cognitiveservices.speech as speechsdk
from bridge.reply import Reply, ReplyType
from common.log import logger
from common.tmp_dir import TmpDir
from voice.voice import Voice
from config import conf
"""
Azure voice
主目录设置文件中需填写azure_voice_api_key和azure_voice_region

查看可用的 voice： https://speech.microsoft.com/portal/voicegallery

"""

class AzureVoice(Voice):

    def __init__(self):
        try:
            curdir = os.path.dirname(__file__)
            config_path = os.path.join(curdir, "config.json")
            config = None
            if not os.path.exists(config_path): #如果没有配置文件，创建本地配置文件
                config = { "speech_synthesis_voice_name": "zh-CN-XiaoxiaoNeural", "speech_recognition_language": "zh-CN"}
                with open(config_path, "w") as fw:
                    json.dump(config, fw, indent=4)
            else:
                with open(config_path, "r") as fr:
                    config = json.load(fr)
            self.api_key = conf().get('azure_voice_api_key')
            self.api_region = conf().get('azure_voice_region')
            self.speech_config = speechsdk.SpeechConfig(subscription=self.api_key, region=self.api_region)
            self.speech_config.speech_synthesis_voice_name = config["speech_synthesis_voice_name"]
            self.speech_config.speech_recognition_language = config["speech_recognition_language"]
        except Exception as e:
            logger.warn("AzureVoice init failed: %s, ignore " % e)

    def voiceToText(self, voice_file):
        audio_config = speechsdk.AudioConfig(filename=voice_file)
        speech_recognizer = speechsdk.SpeechRecognizer(speech_config=self.speech_config, audio_config=audio_config)
        result = speech_recognizer.recognize_once()
        if result.reason == speechsdk.ResultReason.RecognizedSpeech:
            logger.info('[Azure] voiceToText voice file name={} text={}'.format(voice_file, result.text))
            reply = Reply(ReplyType.TEXT, result.text)
        else:
            logger.error('[Azure] voiceToText error, result={}'.format(result))
            reply = Reply(ReplyType.ERROR, "抱歉，语音识别失败")
        return reply

    def textToVoice(self, text):
        fileName = TmpDir().path() + 'reply-' + str(int(time.time())) + '.wav'
        audio_config = speechsdk.AudioConfig(filename=fileName)
        speech_synthesizer = speechsdk.SpeechSynthesizer(speech_config=self.speech_config, audio_config=audio_config)
        result = speech_synthesizer.speak_text(text)
        if result.reason == speechsdk.ResultReason.SynthesizingAudioCompleted:
            logger.info(
                '[Azure] textToVoice text={} voice file name={}'.format(text, fileName))
            reply = Reply(ReplyType.VOICE, fileName)
        else:
            logger.error('[Azure] textToVoice error, result={}'.format(result))
            reply = Reply(ReplyType.ERROR, "抱歉，语音合成失败")
        return reply