using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;
using System.IO;

namespace VSMRUManager
{
	public partial class Form1 : Form
	{
		List<string> m_astrVSName = new List<string>();
		List<string> m_astrVSVersion = new List<string>();

		public Form1()
		{
			InitializeComponent();

			GenerateVersion();
			
		}

		private void GenerateVersion()
		{
			string[] astrVSName = { "vs2013", "vs2012", "vs2010", "vs2008", "vs2005", "vs2003" };
			string[] astrVSVersion = { "12.0", "11.0", "10.0", "9.0", "8.0", "7.1" };

			RegistryKey reg = null;
			string strKey;

			for(int i=0; i<astrVSName.Length; i++)
			{
				strKey = "Software\\Microsoft\\VisualStudio\\"+astrVSVersion[i]+"\\ProjectMRUList";
				reg = Registry.CurrentUser.OpenSubKey(strKey);
				if(reg != null)
				{
					m_astrVSName.Add(astrVSName[i]);
					m_astrVSVersion.Add(astrVSVersion[i]);
				}
			}

			cbVSVersion.Items.AddRange(m_astrVSName.ToArray());
			cbVSVersion.SelectedIndex = 0;
		}

		private void UpdateList()
		{
			if(cbVSVersion.SelectedIndex < 0)
				return;

			lvList.Items.Clear();
			int iSelectedVersion = cbVSVersion.SelectedIndex;
			
			string strKey = "Software\\Microsoft\\VisualStudio\\"+m_astrVSVersion[iSelectedVersion]+"\\ProjectMRUList";
			RegistryKey reg = Registry.CurrentUser.OpenSubKey(strKey);
			string[] astrSubValues = reg.GetValueNames();
			for(int i=0; i<astrSubValues.Length; i++)
			{
				ListViewItem item = new ListViewItem(new string[]{ (i+1).ToString(), astrSubValues[i], (string)reg.GetValue(astrSubValues[i]) });
				lvList.Items.Add(item);
			}
		}

		private void cbVSVersion_SelectedIndexChanged(object sender, EventArgs e)
		{
			UpdateList();
		}

		private void btDelAll_Click(object sender, EventArgs e)
		{
			if(MessageBox.Show("Are you sure want to delete all list?", "confirm", MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.No)
				return;
			if(MessageBox.Show("Really?", "confirm", MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.No)
				return;


			int iSelectedVersion = cbVSVersion.SelectedIndex;
			string strKey = "Software\\Microsoft\\VisualStudio\\"+m_astrVSVersion[iSelectedVersion]+"\\ProjectMRUList";
			RegistryKey reg = Registry.CurrentUser.OpenSubKey(strKey, true);
			int iValueCnt = reg.ValueCount;
			for(int i=0; i<iValueCnt; i++)
			{
				int iRow = i;
				string strValueName = lvList.Items[iRow].SubItems[1].Text;
				string strValue = (string)reg.GetValue(strValueName);

				reg.DeleteValue(strValueName);
			}

			UpdateList();
		}

		private void btDelSel_Click(object sender, EventArgs e)
		{
			int iSelectedVersion = cbVSVersion.SelectedIndex;
			string strKey = "Software\\Microsoft\\VisualStudio\\"+m_astrVSVersion[iSelectedVersion]+"\\ProjectMRUList";
			RegistryKey reg = Registry.CurrentUser.OpenSubKey(strKey, true);

			ListView.SelectedIndexCollection selected = lvList.SelectedIndices;
			for(int i=0; i<selected.Count; i++)
			{
				int iRow = selected[i];
				string strValueName = lvList.Items[iRow].SubItems[1].Text;
				string strValue = (string)reg.GetValue(strValueName);

				reg.DeleteValue(strValueName);
			}

			UpdateList();
		}

		private void btClear_Click(object sender, EventArgs e)
		{
			int iSelectedVersion = cbVSVersion.SelectedIndex;
			string strKey = "Software\\Microsoft\\VisualStudio\\"+m_astrVSVersion[iSelectedVersion]+"\\ProjectMRUList";
			RegistryKey reg = Registry.CurrentUser.OpenSubKey(strKey, true);
			int iValueCnt = reg.ValueCount;
			for(int i=0; i<iValueCnt; i++)
			{
				int iRow = i;
				string strValueName = lvList.Items[iRow].SubItems[1].Text;
				string strValue = (string)reg.GetValue(strValueName);

				int iEnd = strValue.IndexOf('|');
				iEnd = (iEnd < 0) ? strValue.Length : iEnd;
				string strFilePath = strValue.Substring(0, iEnd);

				FileInfo finfo = new FileInfo(strFilePath);
				if(finfo.Exists == false)
					reg.DeleteValue(strValueName);
			}

			UpdateList();
		}
	}
}