FNA Save Migration Code Pile

NotProgram.cs

/* This is a snippet of code from the FNA version of Rogue Legacy.
 *
 * A recent FNA update fixed Storage accuracy, affecting save locations:
 * https://plus.google.com/102593483001615978126/posts/7qE6nJGcdL2
 * As a result, games like Rogue Legacy now need a migration process.
 *
 * This is the first one I've written, and I'm posting it here for when
 * I take care of the rest of my affected ports.
 *
 * -flibit
 */
using System;
using System.IO;

using SDL2;

namespace RogueCastle
{
    static class Program
    {
        static string GetOSDir()
        {
            string platform = SDL.SDL_GetPlatform();
            if (platform.Equals("Mac OS X"))
            {
                string osDir = Environment.GetEnvironmentVariable("HOME");
                if (String.IsNullOrEmpty(osDir))
                {
                    return "."; // Oh well.
                }
                return osDir + "/Library/Application Support";
            }
            if (platform.Equals("Linux"))
            {
                string osDir = Environment.GetEnvironmentVariable("XDG_DATA_HOME");
                if (String.IsNullOrEmpty(osDir))
                {
                    osDir = Environment.GetEnvironmentVariable("HOME");
                    if (String.IsNullOrEmpty(osDir))
                    {
                        return "."; // Oh well.
                    }
                    return osDir + "/.local/share";
                }
                return osDir;
            }
            throw new Exception("SDL2 Platform?");
        }

        static void CopyDirectory(string oldPath, string newPath)
        {
            System.Console.WriteLine("Copying directory " + oldPath + " to " + newPath + "...");
            Directory.CreateDirectory(newPath);
            DirectoryInfo dir = new DirectoryInfo(oldPath);
            DirectoryInfo[] dirs = dir.GetDirectories();
            FileInfo[] files = dir.GetFiles();
            foreach (FileInfo file in files)
            {
                System.Console.Write("\tCopying file " + file.Name + "...");
                file.CopyTo(Path.Combine(newPath, file.Name), false);
                System.Console.WriteLine(" Done!");
            }
            foreach (DirectoryInfo subdir in dirs)
            {
                CopyDirectory(subdir.FullName, Path.Combine(newPath, subdir.Name));
            }
            System.Console.WriteLine("Done!");
        }

        static void MigrateSaveData()
        {
            string newSaveDir = Path.Combine(GetOSDir(), "RogueLegacy");
            string oldSaveDir = Path.Combine(GetOSDir(), "RogueLegacyStorageContainer");
            if (!Directory.Exists(newSaveDir) && Directory.Exists(oldSaveDir))
            {
                try
                {
                    System.Console.WriteLine("Performing save migration...");

                    System.Console.Write("Creating new base directories...");
                    Directory.CreateDirectory(newSaveDir);
                    newSaveDir = Path.Combine(newSaveDir, "RogueLegacyStorageContainer");
                    Directory.CreateDirectory(newSaveDir);
                    newSaveDir = Path.Combine(newSaveDir, "AllPlayers");
                    Directory.CreateDirectory(newSaveDir);
                    System.Console.WriteLine(" Done!");

                    CopyDirectory(oldSaveDir, newSaveDir);

                    System.Console.WriteLine("Migration complete!");
                } catch (Exception e)
                {
                    System.Console.WriteLine(e.ToString());
                    SDL.SDL_ShowSimpleMessageBox(
                        SDL.SDL_MessageBoxFlags.SDL_MESSAGEBOX_ERROR,
                        "SAVE THIS MESSAGE!",
                        "Save migration failed!\n" +
                        "Your files are safe, they're just not in the right place yet...",
                        IntPtr.Zero
                    );
                }
            }
        }
    }
}