using System;

using Microsoft.SPOT;
using Microsoft.SPOT.Input;
using Microsoft.SPOT.Presentation;
using Microsoft.SPOT.Presentation.Controls;

using SPL.Script.Engine;

namespace SPLMFEngine.Sample1
{
    public class Program : Microsoft.SPOT.Application
    {
        public static void Main()
        {
            Program myApplication = new Program();

            Window mainWindow = myApplication.CreateWindow();

            GPIOButtonInputProvider inputProvider = new GPIOButtonInputProvider(null);

            myApplication.Run(mainWindow);
        }

        private Window mainWindow;

        //##########################  Sample Code  #################################
        private ConsoleWindow _consoleWindow;
        private SPLScriptEngine _engine = null;
        //##########################  Sample Code  #################################

        public Window CreateWindow()
        {
            mainWindow = new Window();
            mainWindow.Height = SystemMetrics.ScreenHeight;
            mainWindow.Width = SystemMetrics.ScreenWidth;


            //##########################  Sample Code  #################################
            Font font = Resources.GetFont(Resources.FontResources.small);
            _consoleWindow = new ConsoleWindow(font);

            mainWindow.Child = _consoleWindow;
            //##########################  Sample Code  #################################


            mainWindow.AddHandler(Buttons.ButtonUpEvent, new ButtonEventHandler(OnButtonUp), false);

            mainWindow.Visibility = Visibility.Visible;

            Buttons.Focus(mainWindow);


            //##########################  Sample Code  #################################
            _engine = new SPLScriptEngine(mainWindow, _consoleWindow, Dispatcher.CurrentDispatcher);
            _engine.AddFont("small", Resources.GetFont(Resources.FontResources.small));

            _consoleWindow.WriteLine("Please push any button!.");
            _consoleWindow.WriteLine("Select button will clear screen.");
            //##########################  Sample Code  #################################


            return mainWindow;
        }

        private void OnButtonUp(object sender, ButtonEventArgs e)
        {
            Debug.Print(e.Button.ToString());

            //##########################  Sample Code  #################################
            if (e.Button == Microsoft.SPOT.Hardware.Button.VK_SELECT)
            {
                _consoleWindow.ClearConsole();
            }
            else if (e.Button == Microsoft.SPOT.Hardware.Button.VK_LEFT)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("a = 10");
                sb.Append("b = 20");
                sb.Append("c = a + b");
                sb.Append("print \"c -> \" + c");

                _engine.ExecuteScriptText(sb.ToText());
            }
            else if (e.Button == Microsoft.SPOT.Hardware.Button.VK_RIGHT)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("procedure Sum(a, b)");
                sb.Append("  return a+b");
                sb.Append("end");
                sb.Append("mysum = Sum(33, 55)");
                sb.Append("print \"mysum = \" + mysum");

                _engine.ExecuteScriptText(sb.ToText());
            }
            else if (e.Button == Microsoft.SPOT.Hardware.Button.VK_UP)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("a = 0");
                sb.Append("print \"start for loop\"");
                sb.Append("for (i=1; i <= 5; i++)");
                sb.Append("{");
                sb.Append("  a = a + i");
                sb.Append("  print \"a -> \" + a");                
                sb.Append("}");
                sb.Append("print \"end for loop\"");

                _engine.ExecuteScriptText(sb.ToText());
            }
            else if (e.Button == Microsoft.SPOT.Hardware.Button.VK_DOWN)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("a = 0");
                sb.Append("s = 0");
                sb.Append("print \"start while loop\"");
                sb.Append("while (a < 5)");
                sb.Append("{");
                sb.Append("  a++");
                sb.Append("  s = s + a");
                sb.Append("  print \"s -> \" + s");                
                sb.Append("}");
                sb.Append("print \"end of while loop\"");

                _engine.ExecuteScriptText(sb.ToText());
            }
            //##########################  Sample Code  #################################
        }
    }
}