using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Configuration;
using System.Configuration.Provider;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

namespace ScreenConnect;

public class ApplicationSettingsProvider : SettingsProviderEx
{
	public override void Initialize(string? name, NameValueCollection config)
	{
		((ProviderBase)this).Initialize(name ?? ((object)this).GetType().Name, config);
	}

	public override SettingsPropertyValueCollection GetPropertyValues(SettingsContext context, SettingsPropertyCollection collection)
	{
		TryClickOnceUpgradeIfNeeded();
		return SettingsProviderEx.GetPropertyValues(collection, SettingsProviderEx.GetPrioritizedConfigurationSectionInfos(context, GetPrioritizedConfigurationFileInfos()));
	}

	public override void SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection collection)
	{
		SettingsProviderEx.WriteApplicablePropertyValuesToConfiguration(((IEnumerable?)collection).OfType<SettingsPropertyValue>(), SettingsProviderEx.GetPrioritizedConfigurationSectionInfos(context, GetPrioritizedConfigurationFileInfos()));
	}

	private static bool IsClickOnceDirectory(DirectoryInfo directoryInfo)
	{
		return Regex.IsMatch(directoryInfo.Name, "^.+_[0-9a-f]{16}_[0-9a-f]{4}\\.[0-9a-f]{4}_[0-9a-f]{16}$");
	}

	private static void TryClickOnceUpgradeIfNeeded()
	{
		try
		{
			DirectoryInfo baseDirectory = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory);
			if (File.Exists("user.config") || !IsClickOnceDirectory(baseDirectory))
			{
				return;
			}
			foreach (DirectoryInfo item in from it in baseDirectory.Parent.SafePipe((DirectoryInfo it) => it.GetDirectories()).SafeEnumerate()
				where it.FullName != baseDirectory.FullName
				select it)
			{
				if (IsClickOnceDirectory(item))
				{
					string text = Path.Combine(item.FullName, "user.config");
					if (File.Exists(text))
					{
						File.Copy(text, "user.config");
						break;
					}
				}
			}
		}
		catch
		{
		}
	}

	private static IEnumerable<ConfigurationFileInfo> GetPrioritizedConfigurationFileInfos()
	{
		DirectoryInfo baseDirectory = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory);
		bool isClickOnce = IsClickOnceDirectory(baseDirectory);
		yield return new ConfigurationFileInfo(isClickOnce ? Path.Combine(baseDirectory.FullName, "user.config") : Extensions.CombinePaths(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), baseDirectory.Name, "user.config"), IsWriteable: true, IsTrustworthy: true);
		if (!isClickOnce)
		{
			yield return new ConfigurationFileInfo(Extensions.CombinePaths(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData), baseDirectory.Name, "user.config"), IsWriteable: false, IsTrustworthy: false);
		}
		yield return new ConfigurationFileInfo(Path.Combine(baseDirectory.FullName, "app.config"), IsWriteable: false, IsTrustworthy: true);
		yield return new ConfigurationFileInfo(Path.Combine(baseDirectory.FullName, "system.config"), IsWriteable: false, IsTrustworthy: true);
	}
}