using Eflatun.SceneReference;
using MyCollections.SceneManagement;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.SceneManagement;

public class Building : MonoBehaviour, INotifyObservers, IDisplayable, IInteractable
{
    [Header("Building Information: ")]
    [SerializeField] private string shopName;
    [SerializeField] private SceneDataSaver sceneDataSaver;

    [Header("Display message on interact: ")]
    [SerializeField] private DisplayMessage displayMessage;

    [Header("UI GameObject Prefab: ")]
    [SerializeField] private GameObject uiObjectPrefab;

    private SceneLoader sceneLoader;

    private GameManager gameManager;
    private List<IObserver> observers = new List<IObserver>();

    private string uiObjectID = string.Empty;

    // Start is called before the first frame update
    void Start()
    {
        gameManager = GameManager.Instance;
        sceneLoader = SceneLoader.Instance;
    }

    // Generate a unique ID for this instance
    private string GenerateID() => Guid.NewGuid().ToString();

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            GameObject go = uiObjectPrefab;
            string buttonAction = InputManager.GetKey(InputAction.Interact).ToString();
            uiObjectID = GenerateID();

            //Notify the UI observer
            NotifyObservers(NotificationType.UI, ("UIObject", go), ("Message", displayMessage.GetFormattedMessage(buttonAction)), ("ObjectID", uiObjectID));
        }
    }

    private void OnTriggerExit2D(Collider2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            //Notify the UI observer to destroy the instance
            //I don't know how to do it
            NotifyObservers(NotificationType.UI, ("DestroyUI", uiObjectID));
        }
    }


    //Interaction message
    public string GetDisplayMessage(DisplayMessage message) =>
        message.GetFormattedMessage(InputManager.GetKey(InputAction.Interact).ToString());

    //Notify the observers
    public void NotifyObservers(NotificationType type, params (string key, object value)[] parameters)
    {
        ObserverNotification notification = new ObserverNotification(type);

        foreach ((string key, object value) param in parameters)
        {
            notification.AddData(param.key, param.value);
        }

        foreach (IObserver observer in observers)
        {
            observer.OnNotify(notification);
        }
    }

    public void AddObserver(IObserver observer)
    {
        if (!observers.Contains(observer))
        {
            observers.Add(observer);
        }
    }

    public void RemoveObserver(IObserver observer)
    {
        if (observers.Contains(observer))
        {
            observers.Remove(observer);
        }
    }

    //Interaction Action
    public void OnInteract()
    {
        sceneLoader.LoadScenes(sceneDataSaver.groupName, LoadType.Loading);
    }

}