Godot 3.1 C# Pck File Exposer

PckFileExposer.cs

public class PckFileExposer : IDisposable
{
    private byte[] _data;
    private string _filename;
    private string _tmpDataFilename;

    private bool _disposed;
    
    public PckFileExposer(string filename)
    {
        _filename = filename;
        
        var file = new File();
        var fileErrorCode = file.Open(filename, (int) File.ModeFlags.ReadWrite);
        if(fileErrorCode != Error.Ok)
        {
            throw new FileLoadException($"There was a problem loading ({filename}) with error code ({fileErrorCode.ToString()})");
        }

        // store data
        _data = file.GetBuffer(file.GetLen());
        
        // close file
        file.Close();
        
        CreateTempDataFile();
    }

    public void DeleteTempDataFile()
    {
        var filename = GetDataPath();
        if(System.IO.File.Exists(filename))
        {
            System.IO.File.Delete(filename);
        }
    }

    public string GetDataPath()
    {
        return $"{GetTempDataDir()}/{_tmpDataFilename}";
    }
    
    private void CreateTempDataFile()
    {
        // NOTE: need to implement your own temp name code here
        _tmpDataFilename = Md5.Hash(_filename + Time.NowTimestamp().ToString());
        
        // attempt to create dir if not exist
        var dir = GetTempDataDir();
        if(!System.IO.Directory.Exists(dir))
        {
            System.IO.Directory.CreateDirectory(dir);
        }
        
        // attempt to create file
        System.IO.File.WriteAllBytes(GetDataPath(), _data);
    }

    private string GetTempDataDir()
    {
        return $"{OS.GetUserDataDir()}/Tmp";
    }

    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    public virtual void Dispose(bool disposing)
    {
        if(_disposed) return;

        if(disposing)
        {
            DeleteTempDataFile();
        }

        _disposed = true;
    }

    ~PckFileExposer() => Dispose(true);
}