using System;
using System.IO;

public class AFile
{
    public static string CheckFOURCC(FileStream fs, ref long bytesRead)
    {
        var buffer = AAssit.ReadByArray(fs, ref bytesRead, 4, 0);
        string FOURCC = System.Text.Encoding.ASCII.GetString(buffer);
        Console.WriteLine($"File {fs.Name} FOURCC: {FOURCC}");
        if (FOURCC != "MOXB" && FOURCC != "MOXT")
        {
            // not a valid FOURCC. No need to read it. 
            bytesRead = 0;
        }

        return FOURCC;
    }
    
    public static string NormalizePath(string path, bool bundlePath = false)
    {
        if (string.IsNullOrEmpty(path))
            return path;

        // Remove invalid characters from the path
        char[] invalidChars = Path.GetInvalidPathChars();
        foreach (char c in invalidChars)
        {
            path = path.Replace(c.ToString(), string.Empty);
        }

        // Additional handling for other potentially problematic characters
        // that might not be included in GetInvalidPathChars but can cause issues
        // path = path.Replace(":", string.Empty)
        //            .Replace("*", string.Empty)
        //            .Replace("?", string.Empty)
        //            .Replace("\"", string.Empty)
        //            .Replace("<", string.Empty)
        //            .Replace(">", string.Empty)
        //            .Replace("|", string.Empty);

        path = path.Trim();
        var items = path.Split('\\');
        
        // use Path.Combine to normalize the path
        path = Path.Combine(items);

        //  #if it's a bundle path. It always use / as separator
        if (bundlePath)
        {
            path = path.Replace("\\", "/");
        }
        
        return path;
    }
}