package com.waywings.react_native_xunfei;

import java.util.Map;
import java.util.HashMap;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;

import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.modules.core.DeviceEventManagerModule;
import com.facebook.react.modules.core.RCTNativeAppEventEmitter;

import com.iflytek.speech.util.JsonParser;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechUtility;
import com.iflytek.cloud.ErrorCode;
import com.iflytek.cloud.InitListener;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechUnderstander;
import com.iflytek.cloud.SpeechUnderstanderListener;
import com.iflytek.cloud.TextUnderstander;
import com.iflytek.cloud.TextUnderstanderListener;
import com.iflytek.cloud.UnderstanderResult;
import com.iflytek.speech.setting.UnderstanderSettings;

import org.json.JSONObject;


/**
 * Created by yanpeipan on 16/7/22.
 */
public class SpeechUnderstanderModule extends ReactContextBaseJavaModule {

    private Context context;
    // 语义理解对象（语音到语义）。
    private SpeechUnderstander mSpeechUnderstander;
    // 语义理解对象（文本到语义）。
    private TextUnderstander   mTextUnderstander;

    private SharedPreferences mSharedPreferences;

    public SpeechUnderstanderModule(ReactApplicationContext reactContext) {
        super(reactContext);
        context = reactContext.getBaseContext();
        // 初始化对象
        mSpeechUnderstander = SpeechUnderstander.createUnderstander(context, mSpeechUdrInitListener);
        mTextUnderstander = TextUnderstander.createTextUnderstander(context, mTextUdrInitListener);
        mSharedPreferences = context.getSharedPreferences(UnderstanderSettings.PREFER_NAME, Activity.MODE_PRIVATE);
    }

    @Override
    public String getName() {
        return "XFlySpeechUnderstander";
    }

    @Override
    public Map<String, Object> getConstants() {
        final Map<String, Object> constants = new HashMap<>();
        return constants;
    }

    int ret = 0;// 函数调用返回值
    @ReactMethod
    public void speechUnderstander() {


        setParam();

        if (mSpeechUnderstander.isUnderstanding()) {// 开始前检查状态
            mSpeechUnderstander.stopUnderstanding();
            Log.d("IFLY", "停止录音");
        } else {
            ret = mSpeechUnderstander.startUnderstanding(mSpeechUnderstanderListener);

            if(ret != 0){
                Log.d("IFLY", "startUnderstanding:"	+ ret);
            }else {
                Log.d("IFLY", "startUnderstanding"	+ ret);
            }
        }
    }
    /**
     * 初始化监听器（语音到语义）。
     */
    private InitListener mSpeechUdrInitListener = new InitListener() {

        @Override
        public void onInit(int code) {
            Log.d("IFLY", "speechUnderstanderListener init() code = " + code);
            if (code != ErrorCode.SUCCESS) {
                Log.d("IFLY", "speechUnderstanderListener初始化失败,错误码：" + code);
            }
        }
    };

    /**
     * 初始化监听器（文本到语义）。
     */
    private InitListener mTextUdrInitListener = new InitListener() {

        @Override
        public void onInit(int code) {
            Log.d("IFLY", "textUnderstanderListener init() code = " + code);
            if (code != ErrorCode.SUCCESS) {
                Log.d("IFLY", "mTextUdrInitListener初始化失败,错误码："+code);
            }
        }
    };

    /**
     * 语义理解回调。
     */
    private SpeechUnderstanderListener mSpeechUnderstanderListener = new SpeechUnderstanderListener() {

        @Override
        public void onResult(final UnderstanderResult result) {
            if (null != result) {
                Log.d("IFLY getResultString", result.getResultString());

                // 显示
                String resultString = result.getResultString();

                WritableMap map = Arguments.createMap();
                map.putString("event", "onResults");
                map.putString("from", "SpeechUnderstander");
                map.putString("result", resultString);

                getReactApplicationContext()
                        .getJSModule(RCTNativeAppEventEmitter.class)
                        .emit("IFly", map);

            } else {
                Log.d("IFLY", "识别结果不正确");
            }
        }

        @Override
        public void onVolumeChanged(int volume, byte[] data) {

            WritableMap map = Arguments.createMap();
            map.putString("event", "onVolumeChanged");
            map.putString("from", "SpeechUnderstander");
            map.putInt("volume", volume);

            getReactApplicationContext()
                    .getJSModule(RCTNativeAppEventEmitter.class)
                    .emit("IFly", map);
        }

        @Override
        public void onEndOfSpeech() {
            // 此回调表示：检测到了语音的尾端点，已经进入识别过程，不再接受语音输入
            WritableMap map = Arguments.createMap();
            map.putString("event", "onEndOfSpeech");
            map.putString("from", "SpeechUnderstander");

            getReactApplicationContext()
                    .getJSModule(RCTNativeAppEventEmitter.class)
                    .emit("IFly", map);
        }

        @Override
        public void onBeginOfSpeech() {
            // 此回调表示：sdk内部录音机已经准备好了，用户可以开始语音输入
            WritableMap map = Arguments.createMap();
            map.putString("event", "onBeginOfSpeech");
            map.putString("from", "SpeechUnderstander");

            getReactApplicationContext()
                    .getJSModule(RCTNativeAppEventEmitter.class)
                    .emit("IFly", map);
        }

        @Override
        public void onError(SpeechError error) {

            WritableMap map = Arguments.createMap();
            map.putString("event", "onError");
            map.putString("from", "SpeechUnderstander");

            getReactApplicationContext()
                    .getJSModule(RCTNativeAppEventEmitter.class)
                    .emit("IFly", map);
        }

        @Override
        public void onEvent(int eventType, int arg1, int arg2, Bundle obj) {
            WritableMap map = Arguments.createMap();
            map.putString("event", "onEvent");
            map.putString("from", "SpeechUnderstander");

            getReactApplicationContext()
                    .getJSModule(RCTNativeAppEventEmitter.class)
                    .emit("IFly", map);
        }
    };

    /**
     * 参数设置
     * @return
     */
    public void setParam() {
        String lang = mSharedPreferences.getString("understander_language_preference", "mandarin");
        if (lang.equals("en_us")) {
            // 设置语言
            mSpeechUnderstander.setParameter(SpeechConstant.LANGUAGE, "en_us");
        }else {
            // 设置语言
            mSpeechUnderstander.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
            // 设置语言区域
            mSpeechUnderstander.setParameter(SpeechConstant.ACCENT, lang);
        }
        // 设置语音前端点:静音超时时间，即用户多长时间不说话则当做超时处理
        mSpeechUnderstander.setParameter(SpeechConstant.VAD_BOS, mSharedPreferences.getString("understander_vadbos_preference", "4000"));

        // 设置语音后端点:后端点静音检测时间，即用户停止说话多长时间内即认为不再输入， 自动停止录音
        mSpeechUnderstander.setParameter(SpeechConstant.VAD_EOS, mSharedPreferences.getString("understander_vadeos_preference", "1000"));

        // 设置标点符号，默认：1（有标点）
        mSpeechUnderstander.setParameter(SpeechConstant.ASR_PTT, mSharedPreferences.getString("understander_punc_preference", "0"));

        // 设置音频保存路径，保存音频格式支持pcm、wav，设置路径为sd卡请注意WRITE_EXTERNAL_STORAGE权限
        // 注：AUDIO_FORMAT参数语记需要更新版本才能生效
        //mSpeechUnderstander.setParameter(SpeechConstant.AUDIO_FORMAT, "wav");
        //mSpeechUnderstander.setParameter(SpeechConstant.ASR_AUDIO_PATH, Environment.getExternalStorageDirectory()+"/msc/sud.wav");
    }
}