using System.Collections.Generic;
using UnityEngine;

public class UIManager : IManager
{
    private Canvas _canvas;
    private List<string> _uiList = new ();
    public List<string> UIList
    {
        get { return _uiList; }
        set
        {
            _uiList = value ?? new List<string>();
            foreach (var ui in _uiList)
            {
                string path = Define.MapPath(ui);
                CreateObject(path);
            }
        }
    }
    
    private readonly Dictionary<string, GameObject> _objects = new ();
    private readonly Dictionary<string, GameObject> _instances = new();
    private readonly Dictionary<string, bool> _switchObjects = new ();
    
    public void Init()
    {
        _canvas = GameObject.Find("@Canvas").GetComponent<Canvas>();
    }

    private void CreateObject(string path)
    {
        GameObject createObj = Manager.Resource.Load<GameObject>(path);
        if (createObj != null)
        {
            _objects.Add(createObj.name, createObj);
            _switchObjects.Add(createObj.name, false);
        }
    }

    public void SwitchOnObject(string name, bool isOn)
    {
        if (_switchObjects.ContainsKey(name) && (_switchObjects[name] != isOn))
            _switchObjects[name] = isOn;
        else return;
        
        if (!_instances.ContainsKey(name))
        {
            GameObject obj = Manager.Resource.Instantiate(_objects[name], _canvas.transform);
            _instances.Add(name, obj);
        }
        
        if (_switchObjects.ContainsKey(name) && _switchObjects[name])
        {
            _objects[name].SetActive(true);
        }
        else
        {
            _objects[name].SetActive(false);
        }
    }

    #region UI Object 특화 메서드
    
    #region ExpBar 메서드
    public void ExclusiveExpBar()
    {
        PlayerController player = GameObject.FindObjectOfType<PlayerController>();
        if (player != null)
        {
            player.OnExpChanged -= UpdateExpBar;
            player.OnExpChanged += UpdateExpBar;
        }
    }

    private void UpdateExpBar(int level, float currentExp, float maxExp)
    {
        ExpBar expBar = _instances["ExpBar"].GetComponent<ExpBar>();
        expBar.UpdateValue(level, currentExp, maxExp);
    }
    #endregion
    
    #endregion
}