using System.Linq;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
using System.Threading.Tasks;

[RequireComponent(typeof(NavMeshAgent))]
public class MovementController : MonoBehaviour
{
    public NavPoint CurrentNavPoint { get; set; }
    public float FlagDistance { get; private set; }
    private GameObject flag;
    private const float updateFlagPositionDelay = 5; 
    [SerializeField] private NavMeshAgent navMeshAgent;

    private void Start()
    {
        navMeshAgent.speed = SettingsReader.Instance.GetSettings.MovementSpeed;
        InvokeRepeating(nameof(UpdateFlagPosition), 0, updateFlagPositionDelay);
    }

    private void OnDestroy()
    {
        CancelInvoke(nameof(UpdateFlagPosition));
    }

    private void UpdateFlagPosition()
    {
        FlagDistance = (flag.transform.position - gameObject.transform.position).magnitude;
    }

    public void MoveToRandomPoint()
    {   
        Debug.Log(MapManager.navPoints == null);
        goToNextNavPoint(MapManager.navPoints[Random.Range(0, MapManager.navPoints.Count)]);
    }

    public List<NavPoint> getPointsCandidate()
    {
        return MapManager.navPoints
            .Where(point => (CurrentNavPoint.position - point.position).magnitude < SettingsReader.Instance.GetSettings.MovementSpeed)
            .ToList();
    }

    public void goToNextNavPoint(NavPoint destination) =>
        navMeshAgent.SetDestination(destination.position);
}