using JetBrains.Annotations;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using Unity.VisualScripting;
using UnityEngine;
using static EnemySpawnerData;
using static UnityEngine.EventSystems.EventTrigger;


public class EnemySpawnerManager : MonoBehaviour {
  public static EnemySpawnerManager Instance;
  public static Action UpdateTick;
  public static Action GizmoTick;

  [SerializeField] public List<Enemies> EnemyPrefabKey;
  [SerializeField] public List<GameObject> EnemyPrefab;
  [SerializeField] public List<int> EnemySpawnCountForTesting;
  [SerializeField] public bool CanStartSpawning = true;

  private Dictionary<Enemies, int> PrefabIndex = new Dictionary<Enemies, int>();
  private Dictionary<Enemies, int> EnemySpawnCountForTestingDict = new Dictionary<Enemies, int>();
  private List<Enemies> ListOfEnemies;


  public void Awake() {
    Instance = this;

    for (int i = 0; i < EnemyPrefabKey.Count; i++) {
      PrefabIndex.Add(EnemyPrefabKey[i], i);
      EnemySpawnCountForTestingDict.Add(EnemyPrefabKey[i], EnemySpawnCountForTesting[i]);
    }

    //ListOfEnemies = Enum.GetValues(typeof(Enemies)).Cast<Enemies>().ToList();
    ListOfEnemies = EnemyPrefabKey;
    Owner = this.GameObject();
    RestartData();
    foreach (var enemy in ListOfEnemies) {
      InitializeEnemyData(enemy, EnemyPrefab[PrefabIndex[enemy]]);
      ApplyInitialTestSpawnIfApplicable(enemy);
    }
  }

  private void ApplyInitialTestSpawnIfApplicable(Enemies enemy) {
    if (!EnemySpawnCountForTestingDict.ContainsKey(enemy)) return;
    MaxSpawnCount[enemy] = EnemySpawnCountForTestingDict[enemy];
  }

  public static void DestroyEnemy(GameObject gameObject, Enemies enemy) {
    Destroy(gameObject);
    CurrentSpawnCount[enemy]--;
  }

  public void Update() {
    StartSpawning();
    UpdateTick?.Invoke();
  }

  public void StartSpawning() {
    if (!CanStartSpawning) return;

    foreach (var enemy in ListOfEnemies)
      while (CurrentSpawnCount[enemy] < MaxSpawnCount[enemy]) {
        var enemyObject = EnemyGameObjectPools[enemy].Get(transform.position, Quaternion.identity);
        var enemyScript = new Gobler(enemyObject);
        EnemyMap.Add(enemyObject, enemyScript);
        CurrentSpawnCount[enemy]++;
      }

    CanStartSpawning = false;
  }




  public void OnDrawGizmos() {
    GizmoTick?.Invoke();
  }

  public static void DrawWireSphere(Color color, Vector3 center, float radius) {
    Gizmos.color = color;
    Gizmos.DrawWireSphere(center, radius);
  }
}



public class EnemyManager : MonoBehaviour {
  public Action UpdateTick;
  public Action GizmoTick;

  public void Update() {
    UpdateTick?.Invoke();
  }

  public void OnDrawGizmos() {
    GizmoTick?.Invoke();
  }

  public void DrawWireSphere(Color color, Vector3 center, float radius) {
    Gizmos.color = color;
    Gizmos.DrawWireSphere(center, radius);
  }
}



public static class EnemySpawnerData {
  public enum Enemies {
    Gobler,
  }

  public static GameObject Owner;
  public static Dictionary<Enemies, GameObject> ObjectPrefabs = new Dictionary<Enemies, GameObject>();
  public static Dictionary<Enemies, GameObjectPool> EnemyGameObjectPools = new Dictionary<Enemies, GameObjectPool>();
  public static Dictionary<Enemies, EnemyManager> EnemyManagers = new Dictionary<Enemies, EnemyManager>();
  public static Dictionary<Enemies, int> MaxSpawnCount = new Dictionary<Enemies, int>();
  public static Dictionary<Enemies, int> CurrentSpawnCount = new Dictionary<Enemies, int>();
  public static Dictionary<GameObject, Alive> EnemyMap = new Dictionary<GameObject, Alive>();

  public static void RestartData() {
    ObjectPrefabs = new Dictionary<Enemies, GameObject>();
    EnemyGameObjectPools = new Dictionary<Enemies, GameObjectPool>();
    EnemyManagers = new Dictionary<Enemies, EnemyManager>();
    MaxSpawnCount = new Dictionary<Enemies, int>();
    CurrentSpawnCount = new Dictionary<Enemies, int>();
    EnemyMap = new Dictionary<GameObject, Alive>();
  }

  public static void InitializeEnemyData(Enemies enemy, GameObject prefab) {
    EnemyGameObjectPools.Add(enemy, new GameObjectPool(prefab, 50, 200));
    EnemyManagers.Add(enemy, Owner.AddComponent<EnemyManager>());
    MaxSpawnCount.Add(enemy, 0);
    CurrentSpawnCount.Add(enemy, 0);
  }

  //public static Dictionary<GameObject, Gobler> Goblers = new Dictionary<GameObject, Gobler>();
  //public static int MaxGoblers = 100;
}