using Microsoft.Toolkit.Uwp.Services.Bing;
using System;
using System.Threading.Tasks;
using Windows.Media.Capture;
using Windows.Storage;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;

namespace UwpSpeechToTextDemo
{
    public sealed partial class MainPage : Page
    {
        private MediaCapture mediaCapture;

        public MainPage()
        {
            InitializeComponent();
        }

        private async Task InitializeMediaCapture()
        {
            try
            {
                mediaCapture = new MediaCapture();
                await mediaCapture.InitializeAsync();
            }
            catch (Exception ex)
            {
                // 處理初始化過程中的異常
                txtResult.Text = $"初始化媒體捕獲失?。簕ex.Message}";
            }
        }

        private async void btnStartStop_Click(object sender, RoutedEventArgs e)
        {
            if (mediaCapture == null)
            {
                await InitializeMediaCapture();
            }

            if (mediaCapture != null)
            {
                if (btnStartStop.Content.ToString() == "Start")
                {
                    await StartSpeechToText();
                }
                else if (btnStartStop.Content.ToString() == "Stop")
                {
                    await StopSpeechToText();
                }
            }
        }

        private async Task StartSpeechToText()
        {
            try
            {
                // 創(chuàng)建臨時文件用于存儲音頻
                StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;
                StorageFile audioFile = await tempFolder.CreateFileAsync("audio.wav", CreationCollisionOption.GenerateUniqueName);

                // 開始錄制音頻
                MediaEncodingProfile encodingProfile = MediaEncodingProfile.CreateWav(AudioEncodingQuality.Auto);
                await mediaCapture.StartRecordToStorageFileAsync(encodingProfile, audioFile);

                // 更新UI狀態(tài)
                btnStartStop.Content = "Stop";
                txtResult.Text = "開始語音錄制...";
            }
            catch (Exception ex)
            {
                // 處理啟動語音錄制過程中的異常
                txtResult.Text = $"無法啟動語音錄制：{ex.Message}";
            }
        }

        private async Task StopSpeechToText()
        {
            try
            {
                // 停止錄制音頻
                await mediaCapture.StopRecordAsync();

                // 使用Bing Speech API進行語音識別
                StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;
                StorageFile audioFile = await tempFolder.GetFileAsync("audio.wav");
                string result = await BingSpeechApiClient.RecognizeSpeechAsync(audioFile);

                // 顯示識別結(jié)果
                txtResult.Text = result;
            }
            catch (Exception ex)
            {
                // 處理停止語音錄制過程中的異常
                txtResult.Text = $"無法停止語音錄制或語音識別失敗：{ex.Message}";
            }
            finally
            {
                // 刪除臨時文件
                if (mediaCapture != null)
                {
                    mediaCapture.Dispose();
                    mediaCapture = null;
                }

                StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;
                StorageFile audioFile = await tempFolder.GetFileAsync("audio.wav");
                await audioFile.DeleteAsync();

                // 更新UI狀態(tài)
                btnStartStop.Content = "Start";
            }
        }
    }
}

xmlns:services="using:Microsoft.Toolkit.Uwp.Services.Bing"