using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System;
//using UnityEditor;
using Random = UnityEngine.Random;

[Serializable]
public class WaypointGroup : MonoBehaviour {

	public static WaypointGroup Instance = null;
	public int WaypointGroupID = 0;
	public Color WaypointColour = Color.yellow;
	public bool Loop = false;
	public float NextWPradius = 5f;

	[SerializeField] public List<Waypoint> WPs = new List<Waypoint>();
	private int curWpID;

	// Use this for initialization
	void Awake () {
		Instance = this;
	}

	[Serializable]
	public class Waypoint{

		public Vector3 point;
		public float WPradius;
		public int WPnumber;
		public int WPgroup;

		public Waypoint(Vector3 position, float radius, int ID, int group)
		{

			point = position;
			WPradius = radius;
			WPnumber = ID;
			WPgroup = group;

		}

	}


	public void CreateWaypoint()
	{

		Vector3 Pos = gameObject.transform.position;
		float Rad = NextWPradius;
		int ID = curWpID;

		Waypoint WP = new Waypoint(Pos, Rad, ID, WaypointGroupID);

		WPs.Add(WP);
		
		curWpID++;
	}

	public Vector3 GetWaypointDestination(int index)
	{
		Waypoint wp;
		if(index > 0 && index < WPs.Count - 1)
			wp = WPs[index];
		else
			wp = null;
		return wp.point + (Random.insideUnitSphere * wp.WPradius);
	}

	public Waypoint GetWaypoint(int index)
	{
		return WPs[index];
	}
	
	public void DeleteLastWaypoint()
	{
		WPs.RemoveAt(curWpID);

		curWpID--;
	}
	
	public void DeleteAllWaypoints()
	{
		WPs.Clear();
		
		curWpID = 0;
	}
	
	void OnDrawGizmosSelected()
	{

		Gizmos.color = WaypointColour;

		Gizmos.DrawSphere (gameObject.transform.position, NextWPradius);

		for(int i = 0; i < WPs.Count; i++)
		{
			Gizmos.DrawWireSphere(WPs[i].point, WPs[i].WPradius);

			#if UnityEditor
			UnityEditor.Handles.Label(WPs[i].point, "WP " + WPs[i].WPnumber);
			#endif
			if(i < WPs.Count-1)
			{
				Gizmos.DrawLine(WPs[i].point, WPs[i+1].point);
			}
			else if(Loop)
			{
				Gizmos.color = Color.red;
				Gizmos.DrawLine (WPs[i].point, WPs[0].point);
			}
		}
	}

}