using System.Speech.Synthesis;
using System.Windows.Forms;
 
namespace SpeechBroadcaster
{
    public partial class MainForm : Form
    {
        private SpeechSynthesizer synthesizer;
 
        public MainForm()
        {
            InitializeComponent();
            InitSpeechEngine(); // 初始化語音引擎
        }
 
        /// <summary>
        /// 初始化語音合成器
        /// </summary>
        private void InitSpeechEngine()
        {
            synthesizer = new SpeechSynthesizer();
            synthesizer.SetOutputToDefaultAudioDevice(); // 設置默認音頻輸出
            synthesizer.SelectVoiceByHints(VoiceGender.Female, VoiceAge.Adult); // 選擇女聲
        }
 
        /// <summary>
        /// 播報按鈕點擊事件
        /// </summary>
        private void btnSpeak_Click(object sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(txtContent.Text))
            {
                ConfigureParameters(); // 配置播報參數(shù)
                synthesizer.SpeakAsync(txtContent.Text); // 異步播報（不阻塞UI）
            }
        }
 
        /// <summary>
        /// 配置音量、語速參數(shù)
        /// </summary>
        private void ConfigureParameters()
        {
            synthesizer.Volume = trackVolume.Value;    // 音量范圍0-100
            synthesizer.Rate = trackSpeed.Value - 10;  // 語速范圍-10（慢）到10（快）
        }
 
        /// <summary>
        /// 窗體關閉時釋放資源
        /// </summary>
        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            synthesizer?.Dispose();
            base.OnFormClosing(e);
        }
    }
}

// 獲取已安裝的語音包
foreach (InstalledVoice voice in synthesizer.GetInstalledVoices())
{
    comboBox1.Items.Add(voice.VoiceInfo.Culture.Name);
}
 
// 設置語音類型
synthesizer.SelectVoice(selectedVoiceName);

synthesizer.SetOutputToWaveFile("output.wav");
synthesizer.Speak(text);
synthesizer.SetOutputToDefaultAudioDevice();

private Queue<string> speechQueue = new Queue<string>();
 
private void AddToQueue(string text)
{
    speechQueue.Enqueue(text);
    if (!synthesizer.State.Equals(SynthesizerState.Speaking))
    {
        ProcessQueue();
    }
}
 
private void ProcessQueue()
{
    while (speechQueue.Count > 0)
    {
        synthesizer.Speak(speechQueue.Dequeue());
    }
}

try
{
    synthesizer.Speak(text);
}
catch (Exception ex)
{
    MessageBox.Show($"播報失敗：{ex.Message}");
}