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

public class PathingHandler : MonoBehaviour
{
    private DataMap<bool> _obstacleMap;

    private PathFinder _pathFinder;

    private Dictionary<int, GameObject> _pathRequests;

    private Thread _workerThread;

    private int _id;

    [SerializeField]
    private bool _createRandom;

    [SerializeField]
    private bool _addObstacle;

    private void Start()
    {
        // init map
        _obstacleMap = new DataMap<bool>(255, 255);

        // init finder
        _pathFinder = new PathFinder();
        _pathFinder.UpdateObstacleMap(_obstacleMap.Data);

        // start the thread
        _workerThread = new Thread(new ThreadStart(_pathFinder.Start));
        _workerThread.Start();

        _pathRequests = new Dictionary<int, GameObject>();
        RequestPath(gameObject, new Index2D(0, 0), new Index2D(10, 10));
    }

    private void OnApplicationQuit()
    {
        _workerThread.Abort();
    }

    public void RequestPath(GameObject requestee, Index2D from, Index2D to)
    {
        PathRequest request = new PathRequest(_id++, from, to);
        _pathFinder.AddPathRequest(request);

        _pathRequests.Add(request.Id, requestee);
    }

    public void Update()
    {
        // check for paths
        PathResult[] results = _pathFinder.GetResults();

        for (int i = 0; i < results.Length; i++)
        {
        // TODO: give path to object that requested it.
        }
    }
}