using System;
using System.Collections.Generic;
using System.Linq;
using System.Media;
using System.Speech.Synthesis;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.Core.Helpers;

namespace Tango.MachineStudio.Common.Speech
{
    /// <summary>
    /// Represents the default speech provider.
    /// </summary>
    /// <seealso cref="Tango.Core.ExtendedObject" />
    /// <seealso cref="Tango.MachineStudio.Common.Speech.ISpeechProvider" />
    public class DefaultSpeechProvider : ExtendedObject, ISpeechProvider
    {
        private SpeechSynthesizer _speech;
        private SoundPlayer _soundPlayer;
        private SoundPlayer _soundPlayerErr;

        private bool _mute;
        /// <summary>
        /// Gets or sets a value indicating whether this <see cref="ISpeechProvider" /> is mute.
        /// </summary>
        public bool Mute
        {
            get { return _mute; }
            set { _mute = value; RaisePropertyChangedAuto(); }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="DefaultSpeechProvider"/> class.
        /// </summary>
        public DefaultSpeechProvider()
        {
            _speech = new SpeechSynthesizer();
            _soundPlayer = new SoundPlayer(EmbeddedResourceHelper.GetEmbeddedResourceStream("Tango.MachineStudio.Common.bip.wav"));
            _soundPlayerErr = new SoundPlayer(EmbeddedResourceHelper.GetEmbeddedResourceStream("Tango.MachineStudio.Common.error.wav"));
            _speech.SelectVoice(_speech.GetInstalledVoices().LastOrDefault(x => x.VoiceInfo.Gender == VoiceGender.Female).VoiceInfo.Name);
        }

        /// <summary>
        /// Speaks the specified text associated with an information sound.
        /// </summary>
        /// <param name="text">The text.</param>
        public void SpeakInfo(string text)
        {
            if (!Mute)
            {
                _soundPlayer.Play();
                _speech.SpeakAsync(text);
            }
        }

        /// <summary>
        /// Speaks the specified text associated with an error sound.
        /// </summary>
        /// <param name="text">The text.</param>
        public void SpeakError(string text)
        {
            if (!Mute)
            {
                _soundPlayerErr.Play();
                _speech.SpeakAsync(text);
            }
        }
    }
}