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

public partial class PlayerManager : Manager
{
    public List<Vector2I> _initialRackPositions =
    [
        new Vector2I(0, 1),
        new Vector2I(1, 1),
        new Vector2I(3, 1),
        new Vector2I(4, 1),
        new Vector2I(2, 2),
        new Vector2I(4, 2),
        new Vector2I(1, 3),
        new Vector2I(2, 4)
    ];
    // denoted by c1r1 notation where (3,1) translates to row 1 column 3
    // column 0 represents the ball return where the row represents its order in the return, 
    // (0,0) denotes a ball that is not on the screen
    // numbers should increase from top to bottom and left to right from the player's perspective
    public Node _hoveredNode = null;
    public ManagerPanel _managerPanel = null;
    public BallReturn _ballReturn = null;
    public Rack _rack = null;

    public override void _Ready()
    {
        base._Ready();
        SetSprite("res://art/ness.png");

        _managerPanel = GetNode<ManagerPanel>("Panel");
        _ballReturn = _managerPanel.GetNode<BallReturn>("BallReturn");
        _rack = _managerPanel.GetNode<Rack>("Rack");

        Ball newBall;
        newBall = _ballScene.Instantiate<Ball>();
        newBall.SetSprite("res://art/cue_ball.png");
        newBall._rackPosition = _initialRackPositions[0];
        newBall._owner = this;
        newBall.OnHover += SetHovered;
        newBall.OnMovement += MovingChange;
        _balls.Add(newBall);

        BallSprite newBallSprite;
        newBallSprite = _ballSpriteScene.Instantiate<BallSprite>();
        newBallSprite.SetSprite(newBall._imagePath);
        newBallSprite._rackPosition = _initialRackPositions[0];
        newBallSprite._owner = this;
        newBallSprite.OnHover += SetHovered;
        _ballSprites.Add(newBallSprite);


        for (int i = 1; i <= 7; i++)
        {
            newBall = _ballScene.Instantiate<Ball>();
            newBall.SetSprite("res://art/ball_" + i + ".png");
            newBall._rackPosition = _initialRackPositions[i];
            newBall._owner = this;
            newBall.OnHover += SetHovered;
            newBall.OnMovement += MovingChange;
            _balls.Add(newBall);

            newBallSprite = _ballSpriteScene.Instantiate<BallSprite>();
            newBallSprite.SetSprite(newBall._imagePath);
            newBallSprite._rackPosition = _initialRackPositions[i];
            _rack.SetSprite((int)newBallSprite._rackPosition.Y, (int)newBallSprite._rackPosition.X, newBallSprite._imagePath);
            newBallSprite._owner = this;
            newBallSprite.OnHover += SetHovered;
            _ballSprites.Add(newBallSprite);
        }

        _managerPanel.SetManager(this);
    }

    public override void _Process(double DELTA_)
    {
        if (_ballsMoving == 0 && _opponent._ballsMoving == 0)
        {
            if (_ready)
            {
                if (_hoveredNode is Ball || _selectedNode is Ball)
                {
                    if ((Ball)_selectedNode == null || ((Ball)_selectedNode != _hoveredNode && _hoveredNode is Ball))
                    {
                        if (Input.IsActionJustReleased("left_click"))
                        {
                            _selectedNode = (Ball)_hoveredNode;
                            ((Ball)_selectedNode)._selected = true;
                            _cue.Don(((Ball)_selectedNode).Position);
                        }
                    }
                    else if (Input.IsActionJustReleased("right_click"))
                    {
                        ((Ball)_selectedNode)._selected = false;
                        _selectedNode = null;
                        _cue.Doff();
                    }
                    else if (_hoveredNode == null)
                    {
                        if (Input.IsActionJustReleased("left_click") && (Ball)_selectedNode != null && _cue._power == 0)
                        {
                            ((Ball)_selectedNode)._selected = false;
                            _selectedNode = null;
                            _cue.Doff();
                        }
                    }
                }
            }
            else
            {
                if (_hoveredNode is BallSprite || _selectedNode is BallSprite)
                {

                    if (_selectedNode != null)
                    {
                        Vector2 mousePosition = GetViewport().GetMousePosition();
                        ((BallSprite)_selectedNode).Position = mousePosition;
                        if (Input.IsActionJustReleased("left_click"))
                        {
                            Ball ball = _balls.Single(b => b._rackPosition == ((BallSprite)_hoveredNode)._rackPosition);
                            PlaceBall(ball, mousePosition);
                            _hoveredNode = null;
                            _selectedNode = null;
                            if (_balls.Where(b => b._placed).ToList().Count >= _placeLimit)
                            {
                                _ready = true;
                            }
                        }
                    }
                    else
                    {
                        if (Input.IsActionJustReleased("left_click"))
                        {
                            _selectedNode = (BallSprite)_hoveredNode;
                        }
                    }
                }
            }
        }
    }

    public override void ChangeHealth(int CHANGE)
    {
        base.ChangeHealth(CHANGE);
        GetNode<ManagerPanel>("Panel").SetValue(_health);
    }

    public void MovingChange(Ball BALL, bool MOVING)
    {
        if (MOVING)
        {
            _ballsMoving++;
        }
        else
        {
            _ballsMoving--;
        }
    }

    public override void PlaceBall(Ball BALL, Vector2 POSITION)
    {
        base.PlaceBall(BALL, POSITION);
        BallSprite ballSprite = _ballSprites.Single(s => s._rackPosition == BALL._rackPosition);

        ballSprite._active = false;
        if (GetChildren().Contains(ballSprite))
        {
            RemoveChild(ballSprite);
        }
        _ballReturn._returnCount = _balls.Where(b => b._potted).ToList().Count;
    }

	public override void PotBall(Ball BALL)
	{
        base.PotBall(BALL);

        BallSprite ballSprite = _ballSprites.Single(s => s._rackPosition == BALL._rackPosition);
        int pottedCount = _ballReturn._returnCount;
        ballSprite.Position = new Vector2(_ballReturn.GlobalPosition.X + _ballReturn.Size.X / 2, _ballReturn.GlobalPosition.Y + 50 * (pottedCount + 1));

        
		ballSprite._active = true;
        if (!GetChildren().Contains(ballSprite))
        {
            AddChild(ballSprite);
        }
        _ballReturn._returnCount = _balls.Where(b=>b._potted).ToList().Count;
	}

    public void SetHovered(Node NODE, bool HOVERED)
    {
        if (HOVERED)
        {
            if (_hoveredNode == null)
            {
                if (NODE is Ball)
                {
                    _hoveredNode = (Ball)NODE;
                }
                else if (NODE is BallSprite)
                {
                    _hoveredNode = (BallSprite)NODE;
                }
            }
        }
        else
        {
            _hoveredNode = null;
        }
    }

    public void SetRack()
    {
        for (int i = 0; i < _ballSprites.Count; i++)
        {
            if ((int)_ballSprites[i]._rackPosition.Y > 0 && (int)_ballSprites[i]._rackPosition.X > 0)
            {
                _rack.SetSprite((int)_ballSprites[i]._rackPosition.Y, (int)_ballSprites[i]._rackPosition.X, _ballSprites[i]._imagePath);
            }
        }
        for (int i = 0; i < _opponent._ballSprites.Count; i++)
        {
            if ((int)_opponent._ballSprites[i]._rackPosition.Y > 0 && (int)_opponent._ballSprites[i]._rackPosition.X > 0)
            {

                _rack.SetSprite((int)_opponent._ballSprites[i]._rackPosition.Y, (int)_opponent._ballSprites[i]._rackPosition.X, _opponent._ballSprites[i]._imagePath);
            }
        }

    }

    public override void Start()
    {

        PotBall(_balls[0]);
        // for (int i = 0; i < _ballSprites.Count; i++)
        // {
        //     GD.Print(_ballSprites[i]._rackPosition);
        //     // _ballSprites[i].Position = new Vector2(_ballReturn.GlobalPosition.X + _ballReturn.Size.X / 2, _ballReturn.GlobalPosition.Y + 50 * (i + 1));
        //     // _ballSprites[i].AddChild(_ballSprites[i]);
        // }
    }
}