using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Security.Cryptography;
using System.Threading;
using Questionable.Model.IO;
using Questionable.Model.Questing;

namespace Questionable.FatePaths;

internal static class AssemblyFateDefinitionLoader
{
	private static readonly Lazy<IReadOnlyDictionary<ushort, FateDefinition>> Definitions = new Lazy<IReadOnlyDictionary<ushort, FateDefinition>>(LoadDefinitions, LazyThreadSafetyMode.ExecutionAndPublication);

	internal static TimeSpan? DecodeDuration { get; private set; }

	internal static Stream FateDefinitionSchema => typeof(AssemblyFateDefinitionLoader).Assembly.GetManifestResourceStream("Questionable.FatePaths.FateDefinitionSchema");

	internal static IReadOnlyDictionary<ushort, FateDefinition> GetDefinitions()
	{
		return Definitions.Value;
	}

	private static IReadOnlyDictionary<ushort, FateDefinition> LoadDefinitions()
	{
		Stopwatch stopwatch = Stopwatch.StartNew();
		using Stream stream = typeof(AssemblyFateDefinitionLoader).Assembly.GetManifestResourceStream("Questionable.FatePaths.FateBundle");
		byte[] array = PathBundleSecret.Key();
		List<KeyValuePair<string, FateDefinition>> list = PathBundle.Deserialize<FateDefinition>(stream, array);
		CryptographicOperations.ZeroMemory(array);
		Dictionary<ushort, FateDefinition> dictionary = new Dictionary<ushort, FateDefinition>(list.Count);
		foreach (var (s, value) in list)
		{
			dictionary[ushort.Parse(s, CultureInfo.InvariantCulture)] = value;
		}
		DecodeDuration = stopwatch.Elapsed;
		return dictionary;
	}
}