using System;
using Godot;
using Godot.Collections;

namespace Cirno.Scripts.Actors._3D;

[Tool]
public partial class Door3D : AnimatableBody3D, IActivable
{
    [Export] public string GroupName { get; set; }
    [Export] public DoorState State { get; set; } = DoorState.Closed;

    [Signal]
    public delegate void OpeningEventHandler();

    [Signal]
    public delegate void ClosingEventHandler();

    [Signal]
    public delegate void SetClosedEventHandler();

    [Signal]
    public delegate void SetOpenEventHandler();

    // [Export] public AnimationPlayer  AnimationPlayer { get; set; }
    //
    // [Export] public string OpenAnimationName { get; set; } = "Open";
    //
    // [Export] public string CloseAnimationName { get; set; } = "Close";
    //
    // [Export] public string OpenedAnimationName { get; set; } = "Opened";
    //
    // [Export] public string ClosedAnimationName { get; set; } = "Closed";

    private bool _isAnimating = false;
    private bool _isPlayerIncollider = false;

    private CollisionShape3D _collisionShape;


    public override void _Ready()
    {
        if (Engine.IsEditorHint()) return;

        if (!string.IsNullOrWhiteSpace(GroupName))
        {
            this.AddToGroup(GroupName);
        }

        _collisionShape = GetNode<CollisionShape3D>("CollisionShape3D");

        SyncAnimation();

        // AnimationPlayer.AnimationFinished += AnimationPlayerOnAnimationFinished;
    }

    private void SyncAnimation()
    {
        if (State is DoorState.Closed)
        {
            EmitSignalSetClosed();
            //AnimationPlayer.Play(ClosedAnimationName);
        }
        else
        {
            EmitSignalSetOpen();
            //AnimationPlayer.Play(OpenedAnimationName);
        }
    }

    public void ClosedAnimationFinished()
    {
        State = DoorState.Closed;
        CallDeferred(MethodName.ToggleCollisionDeferred, true);
        _isAnimating = false;
    }

    public void OpenAnimationFinished()
    {
        State = DoorState.Open;
        CallDeferred(MethodName.ToggleCollisionDeferred, false);
        _isAnimating = false;
    }

    public void _func_godot_apply_properties(Dictionary props)
    {
        GroupName = (string)props["targetname"];
    }

    public bool Activate(ActivationType activationType = ActivationType.Toggle)
    {
        if (_isAnimating) return false;
        switch (activationType)
        {
            case ActivationType.Toggle:
            case ActivationType.Use:
                if (State is DoorState.Open && _isPlayerIncollider)
                {
                    return false;
                }

                Toggle();
                break;
            case ActivationType.Enable:
            case ActivationType.Close:
                if (State is DoorState.Open && _isPlayerIncollider)
                {
                    return false;
                }

                ChangeState(DoorState.Closed);
                break;
            case ActivationType.Disable:
            case ActivationType.Open:
                ChangeState(DoorState.Open);
                break;
            case ActivationType.Destroy:
                break;

            default:
                throw new ArgumentOutOfRangeException(nameof(activationType), activationType, null);
        }

        return true;
    }

    private void ChangeState(DoorState newState)
    {
        if (_isAnimating) return;
        if (State == newState) return;

        switch (newState)
        {
            case DoorState.Open:
                EmitSignalOpening();
                break;
            case DoorState.Closed:
                EmitSignalClosing();
                break;
        }

        //State = newState;

        _isAnimating = true;
    }

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

    public void Toggle()
    {
        if (_isAnimating) return;
        ChangeState(State is DoorState.Open ? DoorState.Closed : DoorState.Open);
    }

    public void OnPlayerDetected(Node3D body)
    {
        _isPlayerIncollider = true;
        // if (!_isAnimating) return;
        // if (State is DoorState.Open) // It means it's closing
        // {
        //     AnimationPlayer.SetSpeedScale(-1);
        // }
    }

    public void OnPlayerUndetected(Node3D body)
    {
        _isPlayerIncollider = false;
    }

    // private bool IsPlayerInArea()
    // {
    //     var spaceState = GetWorld3D().DirectSpaceState;
    //     
    //     var query = new PhysicsShapeQueryParameters3D()
    //     {
    //         CollideWithBodies = true,
    //         
    //     }
    //     
    //     
    //     //query.CollideWithBodies = true;
    // }
}