using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using Godot;
using Godot.Bridge;
using Godot.Collections;
using Godot.NativeInterop;
using Newtonsoft.Json;

[ScriptPath("res://Scripts/UI/Settings.cs")]
public partial class Settings : RichTextLabel
{
	public enum SettingIndex
	{
		MusicVol,
		SFXVol,
		AlwaysRun,
		AutoFire,
		Fullscreen,
		Inputs,
		Return,
		Exit
	}

	private Coroutine doingInputs;

	public static SettingsFile file = new SettingsFile();

	[Export(PropertyHint.None, "")]
	private Sprite2D soul;

	private int option;

	private bool wait;

	private const int max = 7;

	private const string path = "user://Settings.dat";

	private Key? lastKey;

	private int currentKey;

	public override void _EnterTree()
	{
		base.Text = Texts.common[59].Replace("@", "\t") + file.musVol + "%\n" + Texts.common[60].Replace("@", "\t") + file.sfxVol + "%\n" + Texts.common[61].Replace("@", "\t") + (file.run ? "ON" : "OFF") + "\n" + Texts.common[62].Replace("@", "\t") + (file.autoFire ? "ON" : "OFF") + "\n" + Texts.common[63].Replace("@", "\t") + (file.fullScreen ? "ON" : "OFF") + "\n" + Texts.common[64] + "\n" + Texts.common[65] + "\n";
		if (MainMenu.instance == null)
		{
			base.Text += Texts.common[66];
		}
		else
		{
			base.Text += Texts.common[67];
		}
	}

	public override void _Process(double delta)
	{
		Coroutine coroutine = doingInputs;
		if (coroutine != null && coroutine.done)
		{
			doingInputs = null;
		}
		if (doingInputs != null)
		{
			return;
		}
		if (!wait)
		{
			wait = true;
			return;
		}
		soul.Position = new Vector2(-8f, 8 + option * 15);
		if (Input.IsActionJustPressed(Main.keys[0]))
		{
			if (option > 0)
			{
				option--;
			}
			Audio.PlaySound(Audio.commonSounds[0]);
		}
		else if (Input.IsActionJustPressed(Main.keys[1]))
		{
			if (option < 7)
			{
				option++;
			}
			Audio.PlaySound(Audio.commonSounds[0]);
		}
		else if (Input.IsActionJustPressed(Main.keys[2]))
		{
			ToggleSettings(-1);
			Audio.PlaySound(Audio.commonSounds[0]);
		}
		else if (Input.IsActionJustPressed(Main.keys[3]))
		{
			ToggleSettings(1);
			Audio.PlaySound(Audio.commonSounds[0]);
		}
		else if (Input.IsActionJustPressed(Main.keys[4]))
		{
			ToggleSettings(1);
			Audio.PlaySound(Audio.commonSounds[2]);
		}
		else if (Input.IsActionJustPressed(Main.keys[5]))
		{
			Audio.PlaySound(Audio.commonSounds[2]);
			SaveSettings();
			QueueFree();
		}
	}

	private void ToggleSettings(int i)
	{
		switch ((SettingIndex)option)
		{
		case SettingIndex.SFXVol:
			file.sfxVol = Mathf.Clamp(file.sfxVol + i * 10, 0, 100);
			UpdateVolume();
			break;
		case SettingIndex.MusicVol:
			file.musVol = Mathf.Clamp(file.musVol + i * 10, 0, 100);
			UpdateVolume();
			break;
		case SettingIndex.AutoFire:
			file.autoFire = !file.autoFire;
			break;
		case SettingIndex.Exit:
			SaveSettings();
			if (MainMenu.instance == null)
			{
				CameraController.instance.GlobalPosition = Vector2.Zero;
				GetTree().ReloadCurrentScene();
			}
			else
			{
				GetTree().Quit();
			}
			break;
		case SettingIndex.Inputs:
			doingInputs = Coroutine.Start(InputRebind());
			break;
		case SettingIndex.Return:
			SaveSettings();
			QueueFree();
			break;
		case SettingIndex.AlwaysRun:
			file.run = !file.run;
			break;
		case SettingIndex.Fullscreen:
			file.fullScreen = !file.fullScreen;
			break;
		}
		_EnterTree();
	}

	public static void SaveSettings()
	{
		FileAccess fileAccess = FileAccess.Open("user://Settings.dat", FileAccess.ModeFlags.Write);
		fileAccess.StoreString(JsonConvert.SerializeObject(file));
		fileAccess.Close();
		ApplySettings();
	}

	public override void _Input(InputEvent @event)
	{
		if (doingInputs != null && !lastKey.HasValue && @event is InputEventKey inputEventKey)
		{
			if (SettingsFile.allowed.Contains(inputEventKey.Keycode))
			{
				lastKey = inputEventKey.Keycode;
			}
			else
			{
				Audio.PlaySound(Audio.commonSounds[1]);
			}
		}
	}

	private IEnumerator InputRebind()
	{
		int[] k = new int[8] { 68, 69, 70, 71, 72, 73, 74, 90 };
		soul.Visible = false;
		base.Text = "";
		while (Input.IsAnythingPressed())
		{
			yield return null;
		}
		yield return null;
		lastKey = null;
		for (int currentKey = 0; currentKey < k.Length; currentKey++)
		{
			Array<InputEvent> array = InputMap.ActionGetEvents(Main.keys[currentKey]);
			base.Text = Texts.common[75].Replace("@", "\n" + Texts.common[k[currentKey]]) + "\n" + Texts.common[94].Replace("#", ((InputEventKey)array[0]).Keycode.ToString()) + "\n" + Texts.common[76] + "\n\n" + Texts.common[95].Replace("@", "\n");
			while (true)
			{
				if (Input.IsActionJustPressed(Main.keys[8]))
				{
					while (Input.IsAnythingPressed())
					{
						yield return null;
					}
					break;
				}
				if (lastKey.HasValue)
				{
					file.keys[currentKey] = lastKey.Value;
					while (Input.IsAnythingPressed())
					{
						yield return null;
					}
					lastKey = null;
					break;
				}
				yield return null;
			}
		}
		soul.Visible = true;
		UpdateKeys();
		_EnterTree();
	}

	public static void UpdateKeys()
	{
		for (int i = 0; i < 8; i++)
		{
			((InputEventKey)InputMap.ActionGetEvents(Main.keys[i])[0]).Keycode = file.keys[i];
		}
	}

	public static void LoadSettings()
	{
		if (FileAccess.FileExists("user://Settings.dat"))
		{
			try
			{
				FileAccess fileAccess = FileAccess.Open("user://Settings.dat", FileAccess.ModeFlags.Read);
				file = JsonConvert.DeserializeObject<SettingsFile>(fileAccess.GetAsText());
				fileAccess.Close();
			}
			catch
			{
				GD.Print("Settings file invalid, skipping...");
			}
		}
		ApplySettings();
	}

	private static void ApplySettings()
	{
		try
		{
			UpdateVolume();
			UpdateKeys();
			UpdateWindow();
		}
		catch
		{
			GD.Print("Settings file invalid, skipping...");
		}
	}

	public static void UpdateWindow()
	{
		if (!Engine.IsEmbeddedInEditor())
		{
			if (file.fullScreen)
			{
				Main.tree.Root.ContentScaleStretch = Window.ContentScaleStretchEnum.Fractional;
				DisplayServer.WindowSetMode(DisplayServer.WindowMode.Fullscreen);
				return;
			}
			Main.tree.Root.ContentScaleStretch = Window.ContentScaleStretchEnum.Integer;
			DisplayServer.WindowSetMode(DisplayServer.WindowMode.Windowed);
			DisplayServer.WindowSetSize(new Vector2I(641, 480));
			Window window = Main.instance.GetWindow();
			Rect2I rect2I = DisplayServer.ScreenGetUsableRect(window.CurrentScreen);
			Vector2I sizeWithDecorations = window.GetSizeWithDecorations();
			window.Position = rect2I.Position + (rect2I.Size / 2 - sizeWithDecorations / 2);
			DisplayServer.WindowSetSize(new Vector2I(640, 480));
		}
	}

	private static void UpdateVolume()
	{
		AudioServer.SetBusVolumeDb(AudioServer.GetBusIndex("Music"), Mathf.LinearToDb((float)file.musVol / 100f));
		AudioServer.SetBusVolumeDb(AudioServer.GetBusIndex("Sound"), Mathf.LinearToDb((float)file.sfxVol / 100f));
	}

	}