using System;
using HurricaneVR.Framework.Core;
using HurricaneVR.Framework.Core.Grabbers;
using HurricaneVR.Framework.Weapons.Guns;
using UnityEngine;

public class GrenadeActivator : MonoBehaviour
{
	public event Action OnReady = delegate {};
	
	[SerializeField] private HVRGrabbable grabbable;
	[SerializeField] private HVRGrabbable masterGrabbable;
	[SerializeField] private HingeJoint joint;
	[SerializeField] private Rigidbody rig;
	[SerializeField] private HVRCockingHandle cockingHandle;
	[SerializeField] private Vector3 anchor;

	private bool isActivated;
	private Vector3 offsetAnchor;
	private float minJointLimit;
	private float maxJointLimit;
	
	private void Start()
	{
		grabbable.Grabbed.AddListener(Grab);
		grabbable.Released.AddListener(Release);
		
		cockingHandle.EjectReached.AddListener(Activate);
		
		var limits = joint.limits;
		minJointLimit = limits.min;
		maxJointLimit = limits.max;

		anchor = joint.connectedAnchor;
		joint.autoConfigureConnectedAnchor = false;
		joint.connectedAnchor = anchor;

		offsetAnchor = anchor - transform.localPosition;
	}

	private void OnDestroy()
	{
		grabbable.Grabbed.RemoveListener(Grab);
		grabbable.Released.RemoveListener(Release);
		
		cockingHandle.EjectReached.RemoveListener(Activate);
	}

	private void Grab(HVRGrabberBase arg0, HVRGrabbable arg1)
	{
		var limit = joint.limits;
		limit.min = 0;
		limit.max = 0.01f;
		joint.limits = limit;
		rig.useGravity = false;
	}

	private void Release(HVRGrabberBase arg0, HVRGrabbable arg1)
	{
		var limit = joint.limits;
		limit.min = minJointLimit;
		limit.max = maxJointLimit;
		joint.limits = limit;
		rig.useGravity = true;
	}
	
	public void Activate()
	{
		if (isActivated) return;
		isActivated = true;
		masterGrabbable.LinkedGrabbables.Remove(grabbable);
		grabbable.ForceRelease();
		Destroy(gameObject);
		OnReady?.Invoke();
	}
	

	private void Update()
	{
		var a = joint.connectedAnchor;
		a.x = transform.localPosition.x + offsetAnchor.x;
		a.y = anchor.y;
		a.z = anchor.z;
		joint.connectedAnchor = a;
	}
}