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

/// TODO alter code to player vs computer to account for differing logic
public partial class Manager : Node2D
{
	public bool _dead, _ready, _moving;
	public int _ballsMoving = 0, _health = 10, _healthMax, _speed = 5;
	public string _imagePath;
	public Vector2 _deskPosition;
	public List<Vector2> _movements = new();
	public CollisionShape2D _startArea;
	public ManagerPanel _managerPanel = null;
	public Sprite2D _image;
	public Desk _desk = null;
	public Manager _opponent;
	public List<Worker> _workers = new();
	public Node _workerNode;
	public Worker _hoveredWorker, _selectedWorker, _heldWorker;
	// public List<Tchotchke> _tchotckes = new();

	public override void _Ready()
	{
		_workerNode = GetNode("Workers");
		_healthMax = _health;

		SetSprite("res://art/ness.png");

		// _managerPanel = GetNode<ManagerPanel>("Panel");
		_desk = GetNode<Desk>("Desk");
		_desk.Setup(15, 20);

		_deskPosition = new Vector2(1, 1);
		// _movements.Insert(0, _deskPosition);
		_image = GetNode<Sprite2D>("Image");
		_image.GlobalPosition = _desk.GetPositionFromAddress(1, 1);

		// _managerPanel.SetManager(this);
		for (int i = 0; i < Globals.Instance._random.Next(3, 6); i++)
		{
			AddWorker(null);
		}
	}

	public override void _Process(double DELTA_)
	{
		ChainMovement();
		ChainSelection();
	}

	public void AddWorker(Worker NEWWORKER)
	{
		Worker newWorker = NEWWORKER ?? Globals.Instance._workerScene.Instantiate<Worker>();
		newWorker._deskPosition = new Vector2(1, 1);
		newWorker.Position = _desk.GetPositionFromAddress(1, 1);
		newWorker._manager = this;
		_workers.Add(newWorker);
		_workerNode.AddChild(newWorker);
		newWorker.SetHovered += SetHoveredWorker;
	}

	public void ChainMovement()
	{
		Vector2 direction = Vector2.Zero;
		if (Input.IsActionJustPressed("move_up"))
		{
			direction = Vector2.Up;
		}
		else if (Input.IsActionJustPressed("move_down"))
		{
			direction = Vector2.Down;
		}
		else if (Input.IsActionJustPressed("move_left"))
		{
			direction = Vector2.Left;
		}
		else if (Input.IsActionJustPressed("move_right"))
		{
			direction = Vector2.Right;
		}

		if (direction != Vector2.Zero)
		{
			Vector2 newPostion = _desk.GetPositionFromAddress((int)(_deskPosition.Y + direction.Y), (int)(_deskPosition.X + direction.X));
			if (newPostion != new Vector2(-1, -1))
			{
				if (_movements.Count > 0)
				{
					for (int i = 0; i < _workers.Count && i < _movements.Count; i++)
					{
						_workers[i]._deskPosition = _movements[i];
						_workers[i].GlobalPosition = _desk.GetPositionFromAddress((int)_movements[i].Y, (int)_movements[i].X);
					}
				}
				_deskPosition += direction;
				_movements.Insert(0, _deskPosition);
				_image.GlobalPosition = newPostion;
			}
		}
	}

	public void ChainSelection()
	{
		if (_heldWorker != null)
		{
			_heldWorker.GlobalPosition = GetGlobalMousePosition();
			if (_hoveredWorker != null && _heldWorker != _hoveredWorker)
			{
				SwapPositions(_heldWorker, _hoveredWorker);
				_hoveredWorker._hovered = false;
				_hoveredWorker = null;
			}
			if (Input.IsActionJustReleased("left_click"))
			{
				_heldWorker.GlobalPosition = _desk.GetPositionFromAddress((int)_heldWorker._deskPosition.Y, (int)_heldWorker._deskPosition.X);
				_heldWorker._held = false;
				_heldWorker = null;
			}
		}
		else
		{
			if (_selectedWorker != null)
			{
				if (Input.IsActionPressed("left_click") && (GetGlobalMousePosition() - _selectedWorker._chainPosition).Length() > 5)
				{

					_heldWorker = _selectedWorker;
					_heldWorker._held = true;
					_heldWorker._selected = false;
					_selectedWorker = null;
				}
			}
			if (_hoveredWorker != null)
			{
				if (Input.IsActionJustPressed("left_click"))
				{
					_selectedWorker = _hoveredWorker;
					_selectedWorker._selected = true;
					_selectedWorker._hovered = false;
					_hoveredWorker = null;
				}
			}
		}
	}

	public void ChangeHealth(int CHANGE)
	{
		_health += CHANGE;
		_health = Math.Min(_health, _healthMax);

		if (_health < 0)
		{
			_dead = true;
			_health = 0;
		}

		GetNode<ManagerPanel>("Panel").SetValue(_health);
	}

	public void SetSprite(string PATH)
	{
		_imagePath = PATH;
	}

	// public void Start()
	// {
	// 	_workers[0].GlobalPosition = _desk.GetPositionFromAddress(1, 1);
	// }

	public void SwapPositions(Worker A, Worker B)
	{
		Vector2 deskPositionA = A._deskPosition, deskPositionB = B._deskPosition;
		
		B.GlobalPosition = _desk.GetPositionFromAddress((int)deskPositionA.Y, (int)deskPositionA.X);
		A._deskPosition = deskPositionB;
		B._deskPosition = deskPositionA;
		
		int indexA = _workers.IndexOf(A), indexB = _workers.IndexOf(B);
		Worker C = A;
		_workers[indexA] = B;
		_workers[indexB] = C;
	}

	private void SetHoveredWorker(Worker HOVEREDWORKER)
	{
		if (HOVEREDWORKER._hovered)
		{
			_hoveredWorker = HOVEREDWORKER;
		}
		else
		{
			_hoveredWorker = null;
		}
	}
	
}