using System;
using System.IO;
using System.Windows.Forms;
using System.Xml;

namespace TeslaConsole;

/// <summary>
/// Machine-level console settings that belong to no single game — the Settings
/// menu toggles that used to live only in memory and reset on every restart.
/// Stored as XML in %ProgramData%\Tesla Console\console.settings, next to
/// RPDefaults.rpd / BTDefaults.btd / local.siteconfig.
///
/// The values themselves stay where they are used (PlasmaBitmaps owns
/// EnableCustomBitmaps); this class only moves them to and from disk, so the
/// original decompiled classes keep their shape. Load() is called once from
/// Program.Main and never from a static initializer: the differential test suite
/// drives PlasmaBitmaps directly, and must keep seeing the original defaults
/// rather than whatever this operator happens to have saved.
/// </summary>
internal static class ConsoleSettings
{
	private static readonly string sSettingsFilePath = Path.Combine(Program.GetCommonAppDataDirectory(), "console.settings");

	/// <summary>
	/// Applies the saved settings. A missing file is the normal first-run case;
	/// a corrupt one is ignored and rewritten by the next Save(), because losing
	/// a menu toggle must never stop the console from starting.
	/// </summary>
	public static void Load()
	{
		try
		{
			if (!File.Exists(sSettingsFilePath))
			{
				return;
			}
			XmlDocument xmlDocument = new XmlDocument();
			xmlDocument.Load(sSettingsFilePath);
			foreach (XmlNode childNode in xmlDocument.DocumentElement.ChildNodes)
			{
				switch (childNode.Name)
				{
				case "EnableCustomBitmaps":
				{
					if (bool.TryParse(childNode.InnerText, out var result))
					{
						PlasmaBitmaps.EnableCustomBitmaps = result;
					}
					break;
				}
				}
			}
		}
		catch (Exception)
		{
		}
	}

	public static void Save()
	{
		try
		{
			XmlDocument xmlDocument = new XmlDocument();
			xmlDocument.AppendChild(xmlDocument.CreateElement("ConsoleSettings"));
			xmlDocument.DocumentElement.AppendChild(xmlDocument.CreateElement("EnableCustomBitmaps")).InnerText = PlasmaBitmaps.EnableCustomBitmaps.ToString();
			string directoryName = Path.GetDirectoryName(sSettingsFilePath);
			if (!Directory.Exists(directoryName))
			{
				Directory.CreateDirectory(directoryName);
			}
			xmlDocument.Save(sSettingsFilePath);
		}
		catch (Exception)
		{
			MessageBox.Show("The console settings file could not be saved.  This setting will only be remembered until the application is closed.", "Error Saving Console Settings!", MessageBoxButtons.OK);
		}
	}
}