using System;
using Godot;
using Godot.Collections;

namespace Cirno.Scripts.Actors._3D;

[Tool]
public partial class ForceField3D : AnimatableBody3D, IActivable
{
    [Export] public StringName TargetName { get; set; }
    
    [Export] public bool StartActive { get; set; }

    [Signal]
    public delegate void EnabledEventHandler();
    
    [Signal]
    public delegate void DisabledEventHandler();
    
    private bool _enabled = false;
    
    private CollisionShape3D  _collisionShape;
    
    public bool Activate(ActivationType activationType = ActivationType.Toggle)
    {
        if (Engine.IsEditorHint()) return false;

        switch (activationType)
        {
            case ActivationType.Toggle:
            case ActivationType.Use:
                if (_enabled)
                {
                    Disable();
                }
                else
                {
                    Enable();
                }
                break;
            case ActivationType.Enable:
            case ActivationType.Close:
                Enable();
                break;
            case ActivationType.Disable:
            case ActivationType.Open:
                Disable();
                break;
            case ActivationType.Destroy:
                return false;
                break;

            default:
                return false;
        }

        return true;
    }

    public void Toggle()
    {
        this.Activate();
    }

    public void _func_godot_apply_properties(Dictionary<string, Variant> props)
    {
        TargetName = props["targetname"].AsStringName();
        StartActive = props["startenabled"].AsBool();
    }
    
    public override void _Ready()
    {
        if (Engine.IsEditorHint()) return;
        if (!string.IsNullOrWhiteSpace(TargetName))
        {
            this.AddToGroup(TargetName);
        }

        _collisionShape = GetNode<CollisionShape3D>("CollisionShape3D");
        
        if (StartActive)
        {
            Enable();
        }
        else
        {
            Disable();
        }
    }

    public void Enable()
    {
        _enabled = true;
        EmitSignalEnabled();

        CallDeferred(MethodName.ToggleCollisionDeferred, true);
        Show();
    }

    public void Disable()
    {
        _enabled = false;
        EmitSignalDisabled();
        
        CallDeferred(MethodName.ToggleCollisionDeferred, false);
        Hide();
    }

    private void ToggleCollisionDeferred(bool enable)
    {
        _collisionShape.Disabled = !enable;
    }
}