Launch SharpDevelop on USB or shared drive

using System;
using System.Linq;
using System.IO;
using System.Xml;
using System.Threading;

namespace SharpDevelop
{
    class Program
    {
        public static void Main()
        {
            /*
            For use on portable installations of SharpDevelop on USB or student documents or school shared network drive.
            It changes the setting for the 'New Project' location then launches \bin\SharpDevelop.exe.
            It uses the PortableApps structure, where the SharpDevelop folder is inside PortableApps folder,
            and the .exe file is expected within this folder in order for PortableApps to start it.
            On a USB the project save path is in X:\Documents\Projects\CSharp
            On student documents the save path is <mapped drive>:\Documents\Projects\CSharp (if .exe allowed)
            On a shared drive at schools the save path is <mapped drive>:\Users\<username>\CSharp. (.exe allowed on this drive only)
            This allows multiple users to use the same install, but save their projects under their own username.

            Place the .exe generated from this code at the root of the SharpDevelop folder
            This project is called 'SharpDevelop' and located in a sub-folder of the 'SharpDevelop'
            install folder, called 'SharpDevelopPortableLauncher'.
            When compiled it creates an .exe file called SharpDevelop.exe in
            SharpDevelopPortableLauncher\SharpDevelop\bin\Debug\SharpDevelop.exe
            This file should be copied to the root folder of the SharpDevelop installation folder:
            <folder>\SharpDevelop\SharpDevelop.exe

            Assume location of this exe is either in same folder as SharpDevelop in PortableApps
            IDE:        <folder>\PortableApps\SharpDevelop\SharpDevelopPortableLauncher\SharpDevelop\bin\Debug\SharpDevelop.exe
            Compiled:   <folder>\PortableApps\SharpDevelop\SharpDevelop.exe
            --> either one launches <folder>\PortableApps\SharpDevelop\bin\SharpDevelop.exe to run the IDE
            need to adjust SharpDevelop\Settings\SharpDevelopProperties.xml for 'NewProjectDialog'
            SharpDevelop could be in:
            1-<any folder or root of drive>\SharpDevelop - Do not alter the settings!
            2-<folder or drive>\PortableApps\SharpDevelop with <folder or drive>\Documents
             = on USB or User Profile on school system. Set save location to \Documents\Projects\CSharp
            3-<folder or drive>\PortableApps\SharpDevelop with <folder or drive>\Users
             = on shared drive. Set save location to \Users\UserName\CSharp
            */
            Console.WriteLine("PortableApps Launcher for SharpDevelop");
            string driveLetter = Path.GetPathRoot(Environment.CurrentDirectory); // X:\
            Console.WriteLine("Drive Letter: " + driveLetter);
            //full startup of .exe eg in .bin folder
            string AppPath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
            Console.WriteLine("App Path: " + AppPath);
            string SDPath = AppPath.Substring(0, AppPath.IndexOf(@"\SharpDevelop")) + @"\SharpDevelop"; // e.g W:\ICT-CLUB\PortableApps\
            Console.WriteLine("SharpDevelop.exe (launcher) located at: " + SDPath);
            Console.WriteLine("SharpDevelop.exe (executable) located at: " + SDPath + @"\bin\SharpDevelop.exe");
            string RootPath = string.Empty;
            string SavesFolder = string.Empty;
            // Check for \PortableApps eg W:\ICT-CLUB\PortableApps\
            if(AppPath.Contains("PortableApps")) //inside PortableApps, so change settings
            {
                RootPath = AppPath.Substring(0, AppPath.IndexOf(@"\PortableApps") + 1); // X:\, W:\ICT-CLUB\
                Console.WriteLine("RootPath = " + RootPath);
                // Check for \Documents
                if(Directory.Exists(Path.Combine(RootPath, @"Documents"))) //on USB OR school user space. Create CSharp folder (No effect if exists)
                {
                    //if on usb RootPath = driveLetter
                    if(RootPath == driveLetter) // on USB
                    {
                        Console.WriteLine("Running from USB (" + driveLetter + ")");
                    }
                    else // not on usb: student space
                    {
                        Console.WriteLine("Running from Documents: (" + RootPath + ")");
                    }
                    if(Directory.Exists(Path.Combine(RootPath, @"Documents\Projects")))     // Documents\Projects already exists
                    {
                        if(!Directory.Exists(Path.Combine(RootPath, @"Documents\Projects\CSharp")))
                        {
                            Console.WriteLine("Creating saves folders");
                            Directory.CreateDirectory(Path.Combine(RootPath, @"\Documents\Projects\CSharp"));
                        }
                        SavesFolder = Path.Combine(RootPath, @"Documents\Projects\CSharp");
                    }
                    else if(Directory.Exists(Path.Combine(RootPath, @"Documents\CSharp")))  // Documents\Projects\CSharp already exists
                    {
                        SavesFolder = Path.Combine(RootPath, @"Documents\CSharp");
                    }
                    else
                    {
                        SavesFolder = Path.Combine(RootPath, @"Documents\Projects\CSharp");
                        Console.WriteLine("Creating / checking saves folders");
                        Directory.CreateDirectory(Path.Combine(RootPath, @"\Documents\Projects\"));
                        Directory.CreateDirectory(Path.Combine(RootPath, @"\Documents\Projects\CSharp"));
                    }
                }
                else if(Directory.Exists(Path.Combine(RootPath, @"Users"))) // on shared folder: create folder from username
                {
                    //Create saves folder based on username for school shared drives
                    Console.WriteLine("Creating / checking saves folders");
                    // CreateDirectory is ignored if the folder already exists
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName));
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\CSharp"));
                    //Can also create folders for portable versions of other IDEs
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\HTML"));
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\Lua"));
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\Java"));
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\Python"));
                    Directory.CreateDirectory(Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\Scratch"));
                    SavesFolder = Path.Combine(RootPath, @"Users\" + Environment.UserName + @"\CSharp");
                }
                Console.WriteLine("Saves Folder: " + SavesFolder);
                // now alter settings
                string settingsFilePath = Path.Combine(SDPath, @"Settings\SharpDevelopProperties.xml");
                XmlDocument SharpDevelopProperties = new XmlDocument();
                SharpDevelopProperties.Load(settingsFilePath);
                try
                {
                    XmlElement DefaultPath =
                        (XmlElement)SharpDevelopProperties.SelectSingleNode(
                        "//Properties/Property[@key='ICSharpCode.SharpDevelop.Gui.Dialogs.NewProjectDialog.DefaultPath']");
                    if (DefaultPath != null)
                    {
                        DefaultPath.InnerText = SavesFolder;
                    }
                    SharpDevelopProperties.Save(settingsFilePath);
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                }
            }
            else
            {
                RootPath = AppPath;
                Console.WriteLine("RootPath = " + RootPath);
            }
            Console.WriteLine("Launching SharpDevelop\n\nHold tight!");
            try
            {
                System.Diagnostics.Process.Start(Path.Combine(SDPath, @"bin\SharpDevelop.exe"));
                Console.WriteLine("\nClosing in 30 seconds...");
                Thread.Sleep(30000);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                Console.WriteLine("Press enter to exit");
                Console.ReadLine();
            }
        }
    }
}