using NodeCanvas.Framework;
using ParadoxNotion.Design;
using Pathfinding;
using UnityEngine;


namespace Reset.Units {

	[Category("Reset/Units")]
	[Description("Set a new path towards a provided target")]
	public class SetNewPathfindingPath : ActionTask<UnitPathfinding>{
		public BBParameter<GameObject> target;

		public bool useTimer;
		public BBParameter<float> timeToRepath;

		//Use for initialization. This is called only once in the lifetime of the task.
		//Return null if init was successfull. Return an error string otherwise
		protected override string OnInit() {
			if (target.isNoneOrNull) {
				Debug.Log($"There is no target set for {agent.name} to pathfind to.", agent.gameObject);
				return $"There is no target set for {agent.name} to pathfind to.";
			}
			
			return null;
		}

		//This is called once each time the task is enabled.
		//Call EndAction() to mark the action as finished, either in success or failure.
		//EndAction can be called from anywhere.
		protected override void OnExecute() {
			agent.seeker.StartPath(agent.transform.position, target.value.transform.position, OnPathComplete);

			if (useTimer) {
				return;
			}

			EndAction(true);
		}

		public void OnPathComplete(Path p){
			if (!p.error) {
				agent.AssignNewPath(p);
			}
		}
		
		//Called once per frame while the action is active.
		protected override void OnUpdate() {
			if (useTimer && elapsedTime > timeToRepath.value) {
				agent.seeker.StartPath(agent.transform.position, target.value.transform.position, OnPathComplete);
				EndAction();
			}
		}

		//Called when the task is disabled.
		protected override void OnStop() {
			
		}

		//Called when the task is paused.
		protected override void OnPause() {
			
		}
	}
}