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

public partial class Desk : Node2D
{
	public Vector2 _topLeft, _cellDimensions, _gridDimensions;
	public Cell _light, _dark;
	Node2D _grid;

	public override void _Ready()
	{
		_grid = GetNode<Node2D>("Cells");
		_light = GetNode<Cell>("Light");
		_dark = GetNode<Cell>("Dark");
	}

	public Cell GetCellFromAddress(int ROW, int COLUMN)
	{
		if (_grid.HasNode("R" + ROW))
		{
			Node2D row = _grid.GetNode<Node2D>("R" + ROW);
			if (row.HasNode("C" + COLUMN))
			{
				Cell column = row.GetNode<Cell>("C" + COLUMN);
				return column;
			}
		}
		return null;
	}

	public Vector2 GetPositionFromAddress(int ROW, int COLUMN)
	{

		Cell cell = GetCellFromAddress(ROW, COLUMN);
		if (cell != null)
		{
			return cell.GlobalPosition;
		}
		return new Vector2(-1, -1);
	}

	public void Setup(int ROWS, int COLUMNS, int CELLSIZE)
	{
		_gridDimensions = new Vector2(COLUMNS, ROWS);
		_cellDimensions = new Vector2(CELLSIZE, CELLSIZE);
		_light.Scale = _cellDimensions / _light.Texture.GetSize();
		_dark.Scale = _cellDimensions / _dark.Texture.GetSize();

		_topLeft = Globals.Instance._screenCenter - _cellDimensions * _gridDimensions / 2 + _cellDimensions / 2;
		Vector2 position;
		Node2D row;
		Cell column;
		for (int i = 0; i < _gridDimensions.Y; i++)
		{
			if (i <= _grid.GetChildCount())
			{
				row = new();
				row.Name = "R" + (i + 1);
				_grid.AddChild(row);
			}
			for (int j = 0; j < _gridDimensions.X; j++)
			{
				position = _topLeft + new Vector2(_cellDimensions.X * j, _cellDimensions.Y * i);
				column = (Cell)((i + j) % 2 == 0 ? _light : _dark).Duplicate();
				column._size = (int)(column.Texture.GetSize().Y * column.Scale.Y);
				column.Name = "C" + (j + 1);
				column.GlobalPosition = position;
				column.Visible = true;
				column._row = i + 1;
				column._column = j + 1;
				row = _grid.GetNode<Node2D>("R" + (i + 1));
				row.AddChild(column);
			}
		}
	}

}