using NAudio.Wave;
using System;
using System.Collections.Generic;
using System.IO;
using System.Media;

namespace HL_FristAidPlatform_Frame
{
    public class SpeechLisen
    {
        //调用代码 new Lisen().Tts(str);

        //private readonly Asr _asrClient;
        //private readonly Tts _ttsClient;

        //App ID: 19744948         
        //API Key: MlUf8KEUgpoFthdbesgUQGab         
        //Secret Key: vQWEIymCVP189imqu53rynlypZLiZRGX    

        //public SpeechLisen()
        //{
        //    _asrClient = new Asr("19744948", "MlUf8KEUgpoFthdbesgUQGab", "vQWEIymCVP189imqu53rynlypZLiZRGX");
        //    _ttsClient = new Tts("MlUf8KEUgpoFthdbesgUQGab", "vQWEIymCVP189imqu53rynlypZLiZRGX");
        //}

        /// <summary>
        /// 识别本地文件
        /// </summary>
        //public void AsrData()
        //{
        //    var data = File.ReadAllBytes("语音pcm文件地址");
        //    var result = _asrClient.Recognize(data, "pcm", 16000);
        //    Console.Write(result);
        //}

        /// <summary>
        /// 识别URL中的语音文件
        /// </summary>
        //public void AsrUrl()
        //{
        //    var result = _asrClient.Recoginze(
        //       "http://xxx.com/待识别的pcm文件地址",
        //       "http://xxx.com/识别结果回调地址",
        //       "pcm",
        //       16000);
        //    Console.WriteLine(result);
        //}

        //List<string> listdata = new List<string>(); 

        /// <summary>
        /// 语音文件的生成
        /// </summary>
        /// <param name="str">需要生成的语音字符</param>
        /// <returns></returns>
        //public string Tts(string str)
        //{
        //    lock (this)
        //    {
        //        //音频文件生成路径和名称
        //        string pathwave = AppDomain.CurrentDomain.BaseDirectory + @"notice.mp3";
        //        // 可选参数            
        //        var option = new Dictionary<string, object>()
        //        {
        //            { "spd", 5},//语速,取值0-9，默认为5中语速
        //            { "vol", 10},//音量,取值0-9，默认为5中音量
        //            { "per", 2}//发音人,0:女声,1:男声,3:情感合成(度逍遥),4:情感合成(度YY) 
        //        };
        //        var result = _ttsClient.Synthesis(str, option);
        //        if (result.ErrorCode == 0)  // 或 result.Success 
        //        {
        //            File.WriteAllBytes(pathwave, result.Data);
        //            var mp3FileName = pathwave;
        //            var outputFileName = mp3FileName.Substring(0, mp3FileName.Length - 3) + "wav";
        //            Mp3ToWav(mp3FileName, outputFileName);//mp3转wav文件             
        //            SoundPlayer player = new SoundPlayer();//进行语音文件播放                
        //            player.SoundLocation = outputFileName;
        //            player.Load(); //同步加载声音         
        //            player.Play(); //启用新线程播放    
        //        }
        //        return "";
        //    }
        //}

        /// <summary>
        /// MP3文件转WAV
        /// </summary>
        /// <param name="mp3File">MP3文件路径</param>
        /// <param name="outputFile">WAV文件输出目录</param>
        /// <returns></returns>
        public static string Mp3ToWav(string mp3File, string outputFile)
        {
            using (Mp3FileReader reader = new Mp3FileReader(mp3File))
            {
                var newFormat = new WaveFormat(8000, 8, 1); // 8kHz, 8bit        
                using (var conversionStream = new WaveFormatConversionStream(newFormat, reader))
                {
                    WaveFileWriter.CreateWaveFile(outputFile, conversionStream);
                }
                return outputFile;
            }
        }

        /// <summary>
        /// 转换成Wav文件
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static string Convert2Wav(string filePath)
        {
            string directoryName = Path.GetDirectoryName(filePath); string fileName = Path.GetFileName(filePath); string tempDir = directoryName + "\\temp" + DateTime.Now.ToString("yyyyMMddHHmmss") + "\\"; if (!Directory.Exists(tempDir)) { Directory.CreateDirectory(tempDir); }
            if (filePath.EndsWith(".wav", StringComparison.CurrentCultureIgnoreCase))
            {
                using (var reader = new WaveFileReader(filePath))
                {
                    var newFormat = new WaveFormat(8000, 8, 1); // 8kHz, 8bit              
                    using (var conversionStream = new WaveFormatConversionStream(newFormat, reader))
                    {
                        WaveFileWriter.CreateWaveFile(tempDir + fileName, conversionStream);
                    }
                }
            }
            else if (filePath.EndsWith(".mp3", StringComparison.CurrentCultureIgnoreCase))
            {
                using (Mp3FileReader reader = new Mp3FileReader(filePath))
                {
                    var newFormat = new WaveFormat(8000, 8, 1); // 8kHz, 8bit    
                    using (var conversionStream = new WaveFormatConversionStream(newFormat, reader))
                    {
                        WaveFileWriter.CreateWaveFile(tempDir + fileName, conversionStream);
                    }
                }
            }
            return tempDir + fileName;
        }
    }
}