using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Windows;
using System.Windows.Media.Imaging;

namespace Crysome.Server.Model;

public static class FlagCache
{
	private static readonly Dictionary<string, BitmapImage> _cache = new Dictionary<string, BitmapImage>(StringComparer.OrdinalIgnoreCase);

	private static bool _loaded;

	public static int Count => _cache.Count;

	public static string DebugInfo { get; private set; } = "";

	public static BitmapImage Get(string code)
	{
		if (!_loaded)
		{
			Load();
		}
		if (_cache.TryGetValue(code, out var value))
		{
			return value;
		}
		return null;
	}

	private static void Load()
	{
		_loaded = true;
		string baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
		StringBuilder stringBuilder = new StringBuilder();
		stringBuilder.AppendLine("BaseDir: " + baseDirectory);
		string[] array = new string[4]
		{
			Path.Combine(baseDirectory, "flags"),
			baseDirectory,
			Path.Combine(baseDirectory, "icons"),
			Path.Combine(baseDirectory, "icons", "flags")
		};
		foreach (string text in array)
		{
			bool flag = Directory.Exists(text);
			stringBuilder.AppendLine("Search: " + text + " -> " + (flag ? "EXISTS" : "NOT FOUND"));
			if (!flag)
			{
				continue;
			}
			string[] files = Directory.GetFiles(text, "*.png");
			int num = 0;
			string[] array2 = files;
			foreach (string text2 in array2)
			{
				string text3 = Path.GetFileNameWithoutExtension(text2).ToUpperInvariant();
				if (!text3.Contains("@") && text3.Length == 2 && !_cache.ContainsKey(text3))
				{
					try
					{
						byte[] buffer = File.ReadAllBytes(text2);
						BitmapImage bitmapImage = new BitmapImage();
						bitmapImage.BeginInit();
						bitmapImage.StreamSource = new MemoryStream(buffer);
						bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
						bitmapImage.EndInit();
						((Freezable)bitmapImage).Freeze();
						_cache[text3] = bitmapImage;
						num++;
					}
					catch (Exception ex)
					{
						stringBuilder.AppendLine("FAIL: " + text2 + " -> " + ex.Message);
					}
				}
			}
			stringBuilder.AppendLine("Loaded " + num + " flags from " + text);
			if (num > 0)
			{
				break;
			}
		}
		stringBuilder.AppendLine("Total flags: " + _cache.Count);
		DebugInfo = stringBuilder.ToString();
		try
		{
			File.WriteAllText(Path.Combine(baseDirectory, "flag_debug.log"), DebugInfo);
		}
		catch
		{
		}
	}
}