namespace StellaOps.AirGap.Bundle.Services;

public sealed partial class BundleBuilder
{
    private static string SanitizeFileSegment(string value)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return "artifact";
        }

        var buffer = new char[value.Length];
        var index = 0;
        foreach (var ch in value)
        {
            if (char.IsLetterOrDigit(ch) || ch == '-' || ch == '_')
            {
                buffer[index++] = ch;
            }
            else
            {
                buffer[index++] = '-';
            }
        }

        var cleaned = new string(buffer, 0, index).Trim('-');
        return string.IsNullOrWhiteSpace(cleaned) ? "artifact" : cleaned;
    }

    private static string EnsureSafeFileName(string fileName)
    {
        if (string.IsNullOrWhiteSpace(fileName))
        {
            throw new ArgumentException("Artifact file name is required.");
        }

        if (fileName.IndexOfAny(Path.GetInvalidFileNameChars()) >= 0 ||
            fileName.Contains('/') ||
            fileName.Contains('\\'))
        {
            throw new ArgumentException($"Invalid artifact file name: {fileName}");
        }

        return fileName;
    }
}