using UnityEngine;
using System.Collections.Generic;
using NodeCanvas.Framework;
using ParadoxNotion.Design;

namespace NodeCanvas.Tasks.Actions
{

    [Category("✫ Utility")]
    [Description("Sends an event to all GraphOwners within range of the agent and over time like a shockwave.")]
    public class ShoutEvent : ActionTask<Transform>
    {

        [RequiredField]
        public BBParameter<string> eventName;
        public BBParameter<float> shoutRange = 10;
        public BBParameter<float> completionTime = 1;

        private GraphOwner[] owners;
        private List<GraphOwner> receivedOwners;
        private float traveledDistance;

        protected override string info {
            get { return string.Format("Shout Event [{0}]", eventName.ToString()); }
        }

        protected override void OnExecute() {
            owners = Object.FindObjectsOfType<GraphOwner>();
            receivedOwners = new List<GraphOwner>();
        }

        protected override void OnUpdate() {
            traveledDistance = Mathf.Lerp(0, shoutRange.value, elapsedTime / completionTime.value);
            foreach ( var owner in owners ) {
                var distance = ( agent.position - owner.transform.position ).magnitude;
                if ( distance <= traveledDistance && !receivedOwners.Contains(owner) ) {
                    owner.SendEvent(eventName.value, null, this);
                    receivedOwners.Add(owner);
                }
            }

            if ( elapsedTime >= completionTime.value ) {
                EndAction();
            }
        }

        public override void OnDrawGizmosSelected() {
            if ( agent != null ) {
                Gizmos.color = new Color(1, 1, 1, 0.2f);
                Gizmos.DrawWireSphere(agent.position, traveledDistance);
                Gizmos.DrawWireSphere(agent.position, shoutRange.value);
            }
        }
    }
}