using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Speech.Recognition;

namespace SpeechRecognitionForms
{

    public partial class Form1 : Form
    {
        public SpeechRecognitionEngine recEngine;
        public static bool keyHold = false;

        NotifyIcon IconPicture;
        Icon ActiveIcon;

        public static Dictionary<string, string> CommandsList { get; set; }

        public Form1()
        {
            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            #region Icon and windows system tray dropdown text & click events
            //Creating icon and setting it to default.
            ActiveIcon = new Icon("speak_lzW_icon.ico");
            IconPicture = new NotifyIcon();
            IconPicture.Icon = ActiveIcon;
            //iconPicture.Visible = true;

            //Creating menu item for window in system tray.
            MenuItem ProgNameMenuItem = new MenuItem("Voice detection by: Lmannen");
            MenuItem QuitMenuItem = new MenuItem("Quit");
            ContextMenu contextMenu = new ContextMenu();
            contextMenu.MenuItems.Add(ProgNameMenuItem);
            contextMenu.MenuItems.Add(QuitMenuItem);

            //Adding the icon to the system tray window.
            IconPicture.ContextMenu = contextMenu;

            //System tray click event handlers
            QuitMenuItem.Click += QuitMenuItem_Click;
            IconPicture.MouseDoubleClick += IconPicture_MouseDoubleClick1;
            #endregion

            CommandsList = new Dictionary<string, string>();

            #region SpeechRecognition commands & event handlers
            recEngine = new SpeechRecognitionEngine();
            recEngine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(recEngine_SpeechRecognized);
            recEngine.AudioStateChanged += new EventHandler<AudioStateChangedEventArgs>(recEngine_AudioStateChange);

            Choices commands = new Choices();
            commands.Add(CommandsList);  // this gives error etc
            GrammarBuilder gBuilder = new GrammarBuilder();
            gBuilder.Append(commands);
            Grammar grammar = new Grammar(gBuilder);

            recEngine.SetInputToDefaultAudioDevice();
            recEngine.LoadGrammarAsync(grammar);
            recEngine.RequestRecognizerUpdate();
            recEngine.RecognizeAsync(RecognizeMode.Multiple);
            #endregion
        }

        internal void recEngine_AudioStateChange(object sender, AudioStateChangedEventArgs e)
        {
            InputStatusLbl.Text = string.Format("{0}", e.AudioState);
        }

        internal static void recEngine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            string command = "";
            if(CommandsList.TryGetValue(e.Result.Text, out command))
            {
                System.Diagnostics.Process.Start(command);
            }

        }

        private void Form1_Resize(object sender, EventArgs e)
        {
            if (WindowState == FormWindowState.Minimized)
            {
                ShowInTaskbar = false;
                ShowIcon = false;
                IconPicture.Visible = true;

            }
        }

        private void IconPicture_MouseDoubleClick1(object sender, MouseEventArgs e)
        {
            ShowInTaskbar = true;
            IconPicture.Visible = false;
            ShowIcon = true;
            WindowState = FormWindowState.Normal;
        }

        private void QuitMenuItem_Click(object sender, EventArgs e)
        {
            IconPicture.Dispose();
            this.Close();
        }



        private void addToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string key = Microsoft.VisualBasic.Interaction.InputBox("Add a voice-command by text", "Command");
            MessageBox.Show(key + " is now added to the command list");

            string value = Microsoft.VisualBasic.Interaction.InputBox("Add path to the command", "Executable path");
            MessageBox.Show(value + " is now added to the commands path");

            CommandsList.Add(key, value);

        }
    }
}