using PIC_Simulator.PIC;
using PIC_Simulator.Properties;
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace PIC_Simulator
{
	public partial class Form1 : Form
	{
		private PICProgramm programm;

		private Timer quartztimer = new Timer();

		public Form1()
		{
			InitializeComponent();

		}

		private void Form1_Load(object sender, EventArgs e)
		{
			box_CodeView.Font = new Font("Consolas", 8);

			box_CodeView.Text = Resources.TPicSim1;

			programm = new PICProgramm();
			programm.Laden(Resources.TPicSim1);
		}

		private void cmd_Start_Click(object sender, EventArgs e)
		{
			quartztimer.Stop();
			quartztimer.Interval = int.Parse(insertTime.Text);
			quartztimer.Start();
		}

		private void cmd_next_Click(object sender, EventArgs e)
		{
			StepProgramm();
		}

		private void programmÖffnenToolStripMenuItem_Click(object sender, EventArgs e)
		{
			if (openFileDialog1.ShowDialog() == DialogResult.OK)
			{
				string datei = File.ReadAllText(openFileDialog1.FileName);

				box_CodeView.Text = datei;

				programm = new PICProgramm();
				programm.Laden(datei);
			}
		}

		private void cmdOpenDoc_Click(object sender, EventArgs e)
		{
			string path = Path.GetTempFileName() + ".pdf";
			File.WriteAllBytes(path, Resources.DataSheet);
			System.Diagnostics.Process.Start(path);
		}

		//Funktion um Zeile aktuell ausgeführte Zeile zu markieren
		void Highlight(int line)
		{
			int i1 = box_CodeView.GetFirstCharIndexFromLine(line);
			int i2 = box_CodeView.GetFirstCharIndexFromLine(line + 1);
			if (i2 < 0 || i1 < 0)
			{
				box_CodeView.SelectionColor = Color.Transparent;
			}
			else
			{
				box_CodeView.SelectionStart = i1;
				box_CodeView.SelectionLength = i2 - i1;
				box_CodeView.SelectionBackColor = Color.SteelBlue;
			}
		}

		private void cmd_reset_Click(object sender, EventArgs e)
		{
			//TODO
		}

		private void beendenToolStripMenuItem_Click(object sender, EventArgs e)
		{
			this.Close();
		}

		private void timer1_Tick(object sender, EventArgs e)
		{
			StepProgramm();
		}

		private void cmd_Stop_Click(object sender, EventArgs e)
		{
			quartztimer.Stop();
		}

		private void StepProgramm()
		{
			bool finished = programm.Step();

			if (finished) { quartztimer.Stop(); return; }

			Highlight(programm.befehle[programm.PCCounter].zeilennummer);
		}
	}
}