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

public class zombieManager : NetworkBehaviour
{
    public float radius;
    public bool drawGizmos;
    public int maxZombiesAtOnce;
    public GameObject[] zombiesToSpawn;
    public List<GameObject> currentZombies;

    void Start()
    {
        
    }

    float t = 0;
    void Update()
    {
        if (!isServer) { return; }

        //waiting for zombie refresh rate
        if (t < 5f)
        {
            t += Time.deltaTime;
            return;
        }

        foreach(netPlayer player in FindObjectsOfType<netPlayer>())
        {
            zombieForPlayer(player);
        }
        
    }

    void zombieForPlayer(netPlayer player)
    {
        if (player.currentZombies.Count < maxZombiesAtOnce)
        {
            Vector3 hit;
            if (RandomPoint(player.transform.position, radius, out hit))
            {
                Debug.Log($"Distance to new point is {Vector3.Distance(player.transform.position, hit)}");
              //  bool notTooClose = (Vector3.Distance(netPlayerStats.localPlayer.transform.position, hit) >= 10);
               // Vector3 screenPoint = Camera.main.WorldToScreenPoint(hit);
               // bool playerCanSee = (screenPoint.x > 0 && screenPoint.x < Screen.width && screenPoint.y > 0 &&
                    //                 screenPoint.y < Screen.height);

                    GameObject newZombie = Instantiate(zombiesToSpawn[Random.Range(0, zombiesToSpawn.Length - 1)], hit, Quaternion.identity);
                    player.currentZombies.Add(newZombie);
                    currentZombies.Add(newZombie);
                    newZombie.GetComponent<zombieBehaviour>().m_zombieArea = this;
                    newZombie.GetComponent<zombieBehaviour>().player = player.transform;
                    NetworkServer.Spawn(newZombie);
                
                    t = 0;
                
            }
        }
    }

    public Transform giveMePlayer()
    {
        
        netPlayer[] players = FindObjectsOfType<netPlayer>();
        if (players.Length <= 0)
        {
            return null;
        }
        return players[Random.Range(0, players.Length-1)].transform;
    }

    bool RandomPoint(Vector3 center, float range, out Vector3 result)
    {
        for (int i = 0; i < 30; i++)
        {
            Vector3 randomPoint = center + Random.insideUnitSphere * range;
            UnityEngine.AI.NavMeshHit hit;
            if (UnityEngine.AI.NavMesh.SamplePosition(randomPoint, out hit, 1.0f, UnityEngine.AI.NavMesh.AllAreas))
            {
                result = hit.position;
                return true;
            }
        }
        result = Vector3.zero;
        return false;
    }


    void OnDrawGizmos()
    {
        if (drawGizmos)
        {
            Gizmos.color = Color.green;
            Gizmos.DrawWireSphere(transform.position, radius);
        }
    }
}