using System.IO;
using System.Reflection;
using UnityEngine;

namespace MSCO
{
    /// <summary>
    /// MSCO-Logo (branding/logo-128.png, als Ressource in die DLL eingebettet):
    /// Symbol im MSCO-Launcher (Hauptmenü) und in Overlays.
    /// </summary>
    public static class Branding
    {
        const string LogoResource = "MSCO.logo.png";

        static byte[] logoPng;
        static Texture2D logoTexture;

        public static byte[] LogoPng
        {
            get
            {
                if (logoPng != null) return logoPng;
                using (Stream s = Assembly.GetExecutingAssembly().GetManifestResourceStream(LogoResource))
                {
                    if (s == null) return logoPng = new byte[0];
                    var data = new byte[s.Length];
                    int read = 0;
                    while (read < data.Length) read += s.Read(data, read, data.Length - read);
                    logoPng = data;
                }
                return logoPng;
            }
        }

        /// <summary>Logo als Textur für OnGUI (nur im Hauptthread verwenden).</summary>
        public static Texture2D LogoTexture
        {
            get
            {
                if (logoTexture != null) return logoTexture;
                if (LogoPng.Length == 0) return null;
                logoTexture = new Texture2D(2, 2, TextureFormat.ARGB32, false);
                logoTexture.LoadImage(LogoPng);
                logoTexture.filterMode = FilterMode.Bilinear;
                logoTexture.hideFlags = HideFlags.HideAndDontSave;
                return logoTexture;
            }
        }
    }
}