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;
	public int _ballsMoving = 0, _health = 10, _healthMax, _speed = 5;
	public string _imagePath;
	public CollisionShape2D _startArea;
	public ManagerPanel _managerPanel = null;
	public Manager _opponent;
	public List<Worker> _workers = new();
	public Worker _hoveredWorker, _selectedWorker, _heldWorker;
	public Node _workerNode;
	public List<Tchotchke> _tchotckes = new();

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

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

		_managerPanel = GetNode<ManagerPanel>("Panel");

		_managerPanel.SetManager(this);

		Worker newWorker = Globals.Instance._workerScene.Instantiate<Worker>();
		newWorker.Position = Globals.Instance._screenCenter;
		newWorker._manager = this;
		_workerNode.AddChild(newWorker);
		_workers.Add(newWorker);

		newWorker = Globals.Instance._workerScene.Instantiate<Worker>();
		newWorker.Position = Globals.Instance._screenCenter;
		newWorker._manager = this;
		_workerNode.AddChild(newWorker);
		_workers.Add(newWorker);

		newWorker = Globals.Instance._workerScene.Instantiate<Worker>();
		newWorker.Position = Globals.Instance._screenCenter;
		newWorker._manager = this;
		_workerNode.AddChild(newWorker);
		_workers.Add(newWorker);

		newWorker = Globals.Instance._workerScene.Instantiate<Worker>();
		newWorker.Position = Globals.Instance._screenCenter;
		newWorker._manager = this;
		_workerNode.AddChild(newWorker);
		_workers.Add(newWorker);

		// for (int i = 0; i < _workers.Count; i++)
		// {
		// 	_workers[i]._healthBar.Position = _managerPanel.GetNode<Panel>("Team").GetNode<Panel>("T"+(i+1)).GlobalPosition;
		// }

		// Tchotchke newTchotchke = ResourceLoader.Load<PackedScene>("res://Gameplay/Tchotchkes/awfully_hot_coffee_pot.tscn").Instantiate<Tchotchke>();
		// newTchotchke.Position =  new Vector2(Globals.Instance._screenSize.X - 100, Globals.Instance._screenCenter.Y);
		// AddChild(newTchotchke);
		// _tchotckes.Add(newTchotchke);
	}

	public override void _Process(double DELTA_)
	{
		if (Globals.Instance._battleRunning)
		{
			ChainMovement();
		}
		else
		{
			MoveChain();
		}
	}

	public void ChainMovement()
	{
		Vector2 mousePosition = GetGlobalMousePosition();
		// _workers[0].LookAt(mousePosition);
		Vector2 mouseOffset = mousePosition - _workers[0].GlobalPosition;
		if (mouseOffset.Length() > _workers[0]._size)
		{
			Vector2 mouseOffsetNormal = mouseOffset.Normalized();
			_workers[0].GlobalPosition += mouseOffsetNormal * _speed;
			_workers[0]._distanceTraveled += _speed;
			_workers[0]._moves.Insert(0, _workers[0].GlobalPosition);

			for (int i = 1; i < _workers.Count; i++)
			{
				if (_workers[i - 1]._distanceTraveled > (_workers[i - 1]._size + _workers[i]._size) * 1.2f)
				{
					_workers[i]._distanceTraveled += _speed;
					_workers[i].GlobalPosition = _workers[i - 1]._moves[^1];
					_workers[i]._moves.Insert(0, _workers[i - 1]._moves[^1]);
					_workers[i - 1]._moves.RemoveAt(_workers[i - 1]._moves.Count - 1);
				}
			}
		}
	}

	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 MoveChain()
	{
		_hoveredWorker = _workers.SingleOrDefault(w => !w._selected && !w._held && w._hovered, null);

		if (_heldWorker != null)
		{
			_heldWorker.GlobalPosition = GetGlobalMousePosition();
			if (_hoveredWorker != null)
			{
				SwapPositions(_heldWorker, _hoveredWorker);
				_hoveredWorker._hovered = false;
				_hoveredWorker = null;
			}
			if (Input.IsActionJustReleased("left_click"))
			{
				_heldWorker.GlobalPosition = _heldWorker._chainPosition;
				_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 SetSprite(string PATH)
	{
		_imagePath = PATH;
	}

	public void SwapPositions(Worker A, Worker B)
	{
		Vector2 positionA = A.Position, positionB = B.Position, chainPositionA = A._chainPosition, chainPositionB = B._chainPosition;
		List<Vector2> movesA = new(A._moves), movesB = new(B._moves);
		// A.Position = positionB;
		B.Position = chainPositionA;
		A._chainPosition = chainPositionB;
		B._chainPosition = chainPositionA;
		A._moves = movesB;
		B._moves = movesA;
		int indexA = _workers.IndexOf(A), indexB = _workers.IndexOf(B);
		Worker C = A;
		_workers[indexA] = B;
		_workers[indexB] = C;
	}
	
}