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

public partial class Tchotchke : StaticBody2D
{
    public bool _hovered = false, _held = false;
    public List<Action> _actions = new();
    public Node _target;

    public override void _Ready()
    {
        MouseEntered += OnMouseEntered;
        MouseExited += OnMouseExited;
    }

    public override void _Process(double DELTA_)
    {
        if (_held)
        {
            GlobalPosition = GetGlobalMousePosition();
            if (Input.IsActionJustReleased("left_click"))
            {
                Transform2D newTransform = GlobalTransform;
                newTransform.Origin = Position;
                GlobalTransform = newTransform;
                Drop();
            }
        }
        else
        {
            if (_hovered)
            {
                if (Input.IsActionJustPressed("left_click"))
                {
                    Hold();
                }
                if (Input.IsActionJustPressed("scroll_up"))
                {
                    Rotation -= 1.0f * (float)(Math.PI) / 180.0f;
                }
                if (Input.IsActionJustPressed("scroll_down"))
                {
                    Rotation += 1.0f * (float)(Math.PI) / 180.0f;
                }
            }
        }
    }

    public void Drop()
    {
        if (_held)
        {
            _held = false;
        }
    }
    
    public void FireActions(Trigger.On TRIGGER, Node TARGET = null)
    {
        List<Action> triggeredActions = _actions.Where(e => e._triggers.IndexOf(TRIGGER) > -1).ToList();
        for (int i = 0; i < triggeredActions.Count; i++)
        {
            triggeredActions[i].Target(TARGET);
            triggeredActions[i].Fire();
        }
        List<Action> expiredActions = _actions.Where(e => e._triggers.IndexOf(TRIGGER) > -1).ToList();
        _actions.Except(expiredActions);
    }

    public void Hold()
    {
        if (_held)
        {
            return;
        }
        _held = true;
    }

    // PRIVATE METHODS
    private void OnMouseEntered()
    {
        _hovered = true;
    }

    private void OnMouseExited()
    {
        _hovered = false;
    }

    
}