using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.InputSystem;

public class HerdController : MonoBehaviour
{

    [SerializeField]
    private GameObject Prefab;

    [SerializeField]
    private int HerdCount = 50;

    [SerializeField]
    private Transform SpawnPoint;

    [SerializeField]
    private float WaitTime;

    private List<PlayerController> Herd;

    void Start()
    {
        SpawnHerd();
        StartCoroutine(MoveRoutine());
    }

    //Recieved movement input from player
    private void OnMovement(InputValue value)
    {
        Vector2 input = value.Get<Vector2>();
        Herd.ForEach(p => p.SetMovement(input));
    }


    [ContextMenu("Spawn")]
    private void SpawnHerd()
    {
        float radius = 0;
        GameObject prefabExample = Instantiate(Prefab);
        Bounds bound = prefabExample.GetBounds();
        Debug.Log(bound.size);
        Destroy(prefabExample);

        if (Herd != null)
            Herd.ForEach(p => Destroy(p));
        Herd = new List<PlayerController>();

        for (int i = 0; i < HerdCount; i++)
        {
            


            int SpawnAttempt = 0;
            while (true)
            {

                Vector3 position = Vector3.ProjectOnPlane(Random.onUnitSphere, Vector3.up) * radius;
                Quaternion rotation = Quaternion.identity;
                if (SpawnPoint != null)
                    position += SpawnPoint.position;

                if (SpawnPositionValid(position,rotation, bound))
                {
                    GameObject newObject = Instantiate(Prefab, position, rotation, transform);
                    
                    Herd.Add(newObject.GetComponent<PlayerController>());


                    break;
                }
                    

                SpawnAttempt++;
                if (SpawnAttempt % 10 == 0)
                {
                    radius += bound.size.magnitude;
                }
                if (SpawnAttempt == 100)
                    break;
            }



            Debug.Log("Total Spawned: " + Herd.Count);
        }
    }

    public IEnumerator MoveRoutine()
    {
        foreach (PlayerController pc in Herd)
        {
            pc.MoveObject();
        }
        yield return new WaitForSeconds(WaitTime);

        StartCoroutine(MoveRoutine());
    }

    private bool SpawnPositionValid(Vector3 position,Quaternion rotation ,Bounds bound)
    {
        Collider[] colliders = Physics.OverlapBox(position, bound.extents,rotation);

        Debug.DrawLine(position, position + Vector3.up);

        foreach(Collider col in colliders)
        {
            if (col.GetComponentInChildren<PlayerController>())
                return false;
            if (col.GetComponentInParent<PlayerController>())
                return false;
        }

        return true;
    }








}