using Microsoft.CognitiveServices.Speech;
using Microsoft.CognitiveServices.Speech.Audio;
using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Diagnostics;

namespace BPASmartClient.Device
{
    public class Speech
    {
        public static uint SND_ASYNC = 0x0001;
        public static uint SND_FILENAME = 0x0002;

        [DllImport("winmm.dll", CharSet = CharSet.Auto)]
        public static extern int mciSendString(string m_strCmd, string m_strReceive, int m_v1, int m_v2);

        [DllImport("Kernel32", CharSet = CharSet.Auto)]
        public static extern Int32 GetShortPathName(string path, StringBuilder shortPath, Int32 shortPathLength);

        private volatile static Speech _Instance;
        public static Speech GetInstance => _Instance ?? (_Instance = new Speech());
        private Speech() { }

        /// <summary>
        /// 播放语音
        /// </summary>
        /// <param name="SpeakText"></param>
        public void Speak(string SpeakText)
        {
            string path = $"{AppDomain.CurrentDomain.BaseDirectory}Sound";//设置音频文件保存路径
            Directory.CreateDirectory(path);
            string SpeakPath = $"{path}\\{SpeakText}.wav";
            SpeakPath = SpeakPath.Replace(' ', '_');
            if (!File.Exists(SpeakPath))
            {
                var res = SynthesizeAudioAsync(SpeakText, SpeakPath);
            }
            StringBuilder shortPath = new StringBuilder(200);
            int result = GetShortPathName(SpeakPath, shortPath, shortPath.Capacity);
            string shortName = shortPath.ToString();
            mciSendString(@"close all", null, 0, 0);
            mciSendString(@"open " + shortName + " alias song", null, 0, 0);
            mciSendString(@"play song", null, 0, 0);
            //return "22";
        }

        /// <summary>
        /// 文字转音频
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        private string SynthesizeAudioAsync(string text, string path)
        {
            var config = SpeechConfig.FromSubscription("b88f6907c8f64075a6169dc4d7dff65a", "chinanorth2");
            config.SpeechSynthesisLanguage = "zh-CN"; //config.SpeechSynthesisVoiceName = "";
            using var audioConfig = AudioConfig.FromWavFileOutput(path);
            using var synthesizer = new SpeechSynthesizer(config, audioConfig);
            synthesizer.SpeakTextAsync(text).Wait();
            //await Task.Delay(TimeSpan.FromSeconds(2));
            return "1";
        }


    }




}