using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BRS_PlaneDropManager : MonoBehaviour
{
	
		[Header("Map Settings")]
		public int MapSize = 8;
		[Range(1,9)]
		public int DropZoneRange = 8;
		[Header("Plane Settings")]
		public GameObject BRS_PlaneSpawn;
		public float BRS_PlaneAltitude;
		public float BRS_PlaneAirspeed = 100f;

		private Vector3[] PD_L;
		private Vector3[] PD_R;
		public GameObject PlaneStart;
		public GameObject PlaneStop;
		private int startFlightIndex;
		private int endFlightIndex;
		public bool VerifiedPath = false;
		public GameObject ADZ;

		void Start ()
		{
		Debug.Break();
			PD_L = new Vector3[9];
			PD_R = new Vector3[9];

			var _MapSize = 8000;//MapSize * 500;
			var setupPosition = new Vector3 (-_MapSize, BRS_PlaneAltitude, _MapSize);

			for(int i = 0; i < PD_L.Length; i++)
			{
				PD_L [i] = setupPosition;
				setupPosition = new Vector3 (-_MapSize, BRS_PlaneAltitude, (setupPosition.z - 1000));
			}
			Debug.Log(setupPosition);
			setupPosition = new Vector3 (_MapSize, BRS_PlaneAltitude, _MapSize);

			for(int i = 0; i < PD_R.Length; i++)
			{
				PD_R [i] = setupPosition;
				setupPosition = new Vector3 (_MapSize, BRS_PlaneAltitude, (setupPosition.z - 1000));
			}

            //Find the cylinder for flight check
            //GameObject ADZ = GameObject.CreatePrimitive(PrimitiveType.Cylinder);
			//ADZ.name = "AcceptableDropZone";
			ADZ.transform.position = Vector3.zero;
			//This value will be calculated in the future based on user preferences
			ADZ.transform.localScale = new Vector3(_MapSize, _MapSize, _MapSize);

			
		//Get an acceptable flight path
		SetupFlightPath();
		}

		private void SetupFlightPath()
		{
			// Let's find a path that is certainly THROUGH the cylinder
			Debug.Log("Start");
			VerifiedPath = false;
			int numberOfAttempts = 0;
			Vector3 startFlight;
			Vector3 endFlight;

			do
			{
				Debug.Log("Planing optimal Route");
				//Pick a Random startpoint
				startFlightIndex = Random.Range(0, PD_L.Length);
				startFlight = PD_L[startFlightIndex];

				//Pick a Random endpoint
				endFlightIndex = Random.Range(0, PD_R.Length);
				endFlight = PD_R[endFlightIndex];

				PlaneStart.transform.position = startFlight;
				PlaneStop.transform.position = endFlight;
				PlaneStart.transform.LookAt(PlaneStop.transform);

				RaycastHit objectHit;
				if (Physics.Raycast(PlaneStart.transform.position, PlaneStart.transform.forward, out objectHit, 8000))
				{
				//Debug.Break();

				Debug.Log("Trying " + numberOfAttempts++ + " times");
					if (objectHit.collider.gameObject.name == "AcceptableDropZone")
					{
						VerifiedPath = true;
						Debug.Log("Optimal Route Calculated");
						GameObject.Destroy(objectHit.collider.gameObject);
					}
				numberOfAttempts++; 
				}
			} while (VerifiedPath != true);
		}

		// Update is called once per frame
		void Update ()
		{

		}

		void LateUpdate()
		{
			if (VerifiedPath)
			{
			Debug.Break();
			SpawnPlane();
			}
		}

		void SpawnPlane()
		{
			PlaneStart.transform.LookAt (PD_R[endFlightIndex]);
			Instantiate(BRS_PlaneSpawn, PlaneStart.transform.position, PlaneStart.transform.rotation);
		Debug.Break();
		//VerifiedPath = false;
	}
	}