using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace SL_Switcher
{
    public partial class SwitcherUI : Form
    {
		private Switcher m_switcher;

        public SwitcherUI()
        {
            InitializeComponent();
			m_switcher = new Switcher(Application.StartupPath);
			m_switcher.WorkStarted += new OperationDelegate(WorkStated);
			m_switcher.WorkFinished += new OperationDelegate(WorkFinished);
			m_switcher.Progress += new OperationProgressDelegate(Progress);
        }

		private void WorkStated(object sender, EventArgs e)
		{
			Status.Text = "Working...";
			progressBar.Value = 0;
			this.Enabled = false;
		}

		private void WorkFinished(object sender, EventArgs e)
		{
			Status.Text = "Ready";
			this.Enabled = true;
		}

		private void Progress(object sender, ProgressEventArgs e)
		{
			progressBar.Maximum = e.Max;
			progressBar.Value = e.Progress;
			Status.Text = e.Message;
			Application.DoEvents();
		}

        private void Form1_Load(object sender, EventArgs e)
        {
			this.Show();

			
			m_switcher.InitDirectories();
			m_switcher.PrepareDirectories();
			m_switcher.DetectInstalled();
			RefreshList();
        }


		private void RefreshList()
		{
			foreach (Program ver in m_switcher.DetectedVersions)
			{
				ListViewItem li = new ListViewItem(ver.Name);
				li.SubItems.Add(ver.Provider);
				li.SubItems.Add(ver.AppVersion);
				li.SubItems.Add(ver.State.ToString());
				li.Tag = ver;
				versionsList.Items.Add(li);
			}
		}

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

		private void StartButton_Click(object sender, EventArgs e)
		{
			ListViewItem li = null;
			if (versionsList.SelectedItems.Count > 0)
			{
				li = versionsList.SelectedItems[0];
			}

			if (li != null)
			{
				try
				{
					Program ver = (Program)li.Tag;
					m_switcher.LaunchVersion(ver);
					this.Close();
				}
				catch (Exception ex)
				{
					MessageBox.Show(ex.Message + "\n" + ex.StackTrace, "Failed to start program", MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
			}
		}

    }
}