using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;


namespace KairoEngine.CharacterSystem
{
    public class CharacterManager : MonoBehaviour
    {
        public static CharacterManager instance;

        public List<CharacterController> sceneCharacters = new List<CharacterController>();
        public List<string> worldCharacterNames = new List<string>();

        public List<string> spawnerIds = new List<string>();

        void OnEnable()
        {
            RegisterEvents.OnRegisterCharacter += RegisterCharacter;
        }

        void OnDisable()
        {
            RegisterEvents.OnRegisterCharacter += RegisterCharacter;
        }

        void Awake()
        {
            if(instance == null) instance = this;
            else Destroy(this.gameObject);
        }

        void Update()
        {
            for (int i = 0; i < sceneCharacters.Count; i++)
            {
                if(sceneCharacters[i] == null)
                {
                    sceneCharacters.RemoveAt(i);
                    i -= 1;
                } 
            }
        }

        private void RegisterCharacter(CharacterController character)
        {
            sceneCharacters.Add(character);
            if(nameIsRegistered(character.unique_name)) return;
            worldCharacterNames.Add(character.unique_name);
        }

        public static void RegisterSpawner(string id) => instance.spawnerIds.Add(id);

        public static bool nameIsRegistered(string characterName)
        {
            for (int i = 0; i < instance.worldCharacterNames.Count; i++)
            {
                if(instance.worldCharacterNames[i] == characterName) return true;
            }
            return false;
        }

        public static bool spawnerIsRegistered(string id)
        {
            for (int i = 0; i < instance.spawnerIds.Count; i++)
            {
                if(instance.spawnerIds[i] == id) return true;
            }
            return false;
        }

        public static void Reset()
        {
            instance.sceneCharacters.Clear();
            instance.worldCharacterNames.Clear();
            instance.spawnerIds.Clear();
        }

        public static CharacterController GetCharacter(string name)
        {
            for (int i = 0; i < instance.sceneCharacters.Count; i++)
            {
                if(instance.sceneCharacters[i].unique_name == name) return instance.sceneCharacters[i];
            }
            return null;
        }
    }
}