using Godot;
using System;
using System.Collections.Generic;

public partial class Cube : StaticBody2D, ITileDraggable
{
	private static readonly Rect2I tableRect = new(0, 0, 3, 2);
	private static readonly Rect2I table2Rect = new(0, -1, 3, 1);
	private static readonly Rect2I chairRect = new(1, 1, 1, 2);
	private static readonly Rect2I chair2Rect = new(1, -2, 1, 2);
	private static readonly Rect2I equipRect = new(0, 0, 3, 2);
	private static readonly Rect2I equip2Rect = new(0, -1, 3, 1);
	private static readonly TileMapping[] tableThemes = {
		new(new Vector2I(1, 30), tableRect),
		new(new Vector2I(4, 30), tableRect),
		new(new Vector2I(7, 30), tableRect),
		new(new Vector2I(7, 28), tableRect),
		new(new Vector2I(10, 28), tableRect),
	};
	private static readonly TileMapping[] table2Themes = {
		new(new Vector2I(1, 31), table2Rect),
		new(new Vector2I(4, 31), table2Rect),
		new(new Vector2I(7, 31), table2Rect),
		new(new Vector2I(7, 29), table2Rect),
		new(new Vector2I(10, 29), table2Rect),
	};
	private static readonly TileMapping[] chairThemes = {
		new(new Vector2I(-1, 7), chairRect),
		new(new Vector2I(0, 7), chairRect),
		new(new Vector2I(-1, 9), chairRect),
		new(new Vector2I(0, 9), chairRect),
	};
	private static readonly TileMapping[] chair2Themes = {
		new(new Vector2I(-1, 10), chair2Rect),
		new(new Vector2I(0, 10), chair2Rect),
		new(new Vector2I(-1, 12), chair2Rect),
		new(new Vector2I(0, 12), chair2Rect),
	};

	private static readonly TileMapping[] equipThemes = {
		// one laptop
		new(new Vector2I(13, 26), equipRect),
		// one laptop with one monitor
		new(new Vector2I(7, 26), equipRect),
		// one desktop PC
		new(new Dictionary<Vector2I, Vector2I>() {
			[new Vector2I(0, 0)] = new Vector2I(11, 17),
			[new Vector2I(1, 0)] = new Vector2I(8, 32),
			[new Vector2I(2, 0)] = new Vector2I(9, 32),
			[new Vector2I(0, 1)] = new Vector2I(11, 18),
			[new Vector2I(1, 1)] = new Vector2I(8, 33),
			[new Vector2I(2, 1)] = new Vector2I(9, 33),
		}),
		// one desktop PC with one monitors
		new(new Vector2I(7, 32), equipRect),
	};

	private static readonly TileMapping[] equip2Themes = {
		// one laptop
		new(new Vector2I(13, 31), equip2Rect),
		// one laptop with one monitor
		new(new Dictionary<Vector2I, Vector2I>() {
			[new Vector2I(0, -1)] = new Vector2I(13, 32),
			[new Vector2I(1, -1)] = new Vector2I(10, 7),
			[new Vector2I(2, -1)] = new Vector2I(15, 32),
		}),
		// one desktop PC
		new(new Dictionary<Vector2I, Vector2I>() {
			[new Vector2I(0, -1)] = new Vector2I(13, 32),
			[new Vector2I(1, -1)] = new Vector2I(14, 32),
			[new Vector2I(2, -1)] = new Vector2I(15, 30),
		}),
		// one desktop PC with one monitors
		new(new Vector2I(13, 33), equip2Rect),
	};

	private bool _draggable = false;
	public bool Draggable {
		get => _draggable;
		set {
			if (value == _draggable) return;
			_draggable = value;
		}
	}

    public Vector2I TilePosition { get; set; } = new Vector2I(5,5);
    private bool _isCollided = true;
	public bool IsCollided {
		get => _isCollided;
		set {
			if (_isCollided == value) return;
			_isCollided = value;
			if (value) {
				GetNode<Polygon2D>("RedBG").Show();
			} else {
				GetNode<Polygon2D>("RedBG").Hide();
			}
		}
	}
	private static readonly Rect2I _tileRect = new(-1, -2, 4, 5);
    public Rect2I TileRect => _tileRect;

	private Vector2I _mouseOffset;
    public Vector2I MouseOffset => _mouseOffset;

    // Called when the node enters the scene tree for the first time.


    public override void _Ready()
	{
		RandomChangeTheme();
		IsCollided = false;
	}

    public override void _InputEvent(Viewport viewport, InputEvent @event, int shapeIdx)
    {
		if (@event.IsActionPressed("mouse_left_press")) {
			if (Draggable) {
				var parent = GetParent<Lab>();
				parent.IsDragging = true;
				parent.DraggingTarget = this;
				var desk = GetNode<TileMapLayer>("Desk");
				_mouseOffset = desk.LocalToMap(GetLocalMousePosition());
				GD.Print($"_mouseOffset = {_mouseOffset}");
			}
		} else if (@event.IsActionReleased("mouse_left_press")) {
			var parent = GetParent<Lab>();
			parent.IsDragging = false;
			parent.DraggingTarget = null;
		}
        base._InputEvent(viewport, @event, shapeIdx);
    }

    // Called every frame. 'delta' is the elapsed time since the previous frame.
    public override void _Process(double delta)
	{
		GlobalPosition = TilePosition * 48;
	}

	public void RandomChangeTheme() {
		tableThemes[GD.RandRange(0, tableThemes.Length-1)].Apply(GetNode<TileMapLayer>("Desk"));
		table2Themes[GD.RandRange(0, table2Themes.Length-1)].Apply(GetNode<TileMapLayer>("Desk2"));
		chairThemes[GD.RandRange(0, chairThemes.Length-1)].Apply(GetNode<TileMapLayer>("Chair"));
		chair2Themes[GD.RandRange(0, chair2Themes.Length-1)].Apply(GetNode<TileMapLayer>("Chair2"));
		equipThemes[GD.RandRange(0, equipThemes.Length-1)].Apply(GetNode<TileMapLayer>("Equip"));
		var x =GD.RandRange(0, equip2Themes.Length-1);
		GD.Print(GD.RandRange(0, equip2Themes.Length-1));
		equip2Themes[x].Apply(GetNode<TileMapLayer>("Equip2"));
	}
}