using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestApp
{
  public class Startup
  {
    static void Main(string[] args)
    {
      if (CasioPrizmDevice.IsDetected)
      {
        //Connect to the calculator
        Console.WriteLine("Calculator detected, connecting...");
        var device = CasioPrizmDevice.GetDevice();
        device.ScreenDataReceived += _WriteImageFile;
        device.Connect();

        //Start the screen receiver service, or something
        device.StartScreenReceiverService();
        Console.WriteLine("Screen Receiver service started.");

        //Wait for a key to be pressed
        while (true)
        {
          if (Console.KeyAvailable)
            if (Console.ReadKey().Key == ConsoleKey.Escape) break;
        }

        //Stop the screen receiver service, or something
        device.StopScreenReceiverService();
        Console.WriteLine("Screen Receiver service stopped.");

        //Disconnect from the calculator
        Console.WriteLine("Disconnecting from calculator...");
        device.Disconnect();
        device.ScreenDataReceived -= _WriteImageFile;
        device.Dispose();
        device = null;
      }
      else
        Console.WriteLine("Calculator not detected.");
    }

    //This whole function needs major help.
    private static void _WriteImageFile(object sender, ScreenDataReceivedEventArgs e)
    {
      string fileName = "C:\\ImageData\\img_{0}.png";
      var bmp = new System.Drawing.Bitmap(384, 216);
      switch (e.Type)
      {
        case CasioPrizmDevice.ImageType.Word:
          {
            for (int i = 0; i < 216; i++)
            {
              for (int j = 0; j < 384; j++)
              {
                int offset = (384 * i) + j;
                ushort c = (ushort)(((e.ScreenData[offset * 2] << 8) | (e.ScreenData[(offset * 2) + 1])) & 0xFFFF);
                var color = System.Drawing.Color.FromArgb(c >> 11, (c >> 5) & 0x3F, c & 0x1F);
                bmp.SetPixel(j, i, color);
              }
            }
            break;
          }
        case CasioPrizmDevice.ImageType.Nibble:
          {
            for (int i = 216 - 1; i >= 0; i--)
            {
              for (int j = 384 - 1; j >= 0; j--)
              {
                int offset = ((384 * i) + j) / 2;
                int c;
                if (offset % 2 == 0)
                  c = e.ScreenData[offset] & 0x0F;
                else
                  c = e.ScreenData[offset] >> 4;
                var color = System.Drawing.Color.FromArgb((c & 0x8) > 0 ? 0xFF : 0, (c & 0x4) > 0 ? 0xFF : 0, (c & 0x2) > 0 ? 0xFF : 0);
                bmp.SetPixel(j, i, color);
              }
            }
            break;
          }
        default:
          {
            //Uh?
            break;
          }
      }

      int counter = 0;
      while (System.IO.File.Exists(String.Format(fileName, counter)))
        counter++;

      bmp.Save(String.Format(fileName, counter));
    }
  }
}