using System.Collections.Generic;
using Photon.Realtime;
using UnityEngine;
using System.Linq;
using System;

namespace KnoxGameStudios
{
    public class UIDisplayFriends : MonoBehaviour
    {
        [SerializeField] private Transform friendContainer;
        [SerializeField] private UIFriend uiFriendPrefab;
        [SerializeField] private RectTransform contentRect;
        [SerializeField] private Vector2 orginalSize;
        [SerializeField] private Vector2 increaseSize;

        private void Awake()
        {
            contentRect = friendContainer.GetComponent<RectTransform>();
            orginalSize = contentRect.sizeDelta;
            increaseSize = new Vector2(0, uiFriendPrefab.GetComponent<RectTransform>().sizeDelta.y);
            PhotonFriendController.OnDisplayFriends += HandleDisplayFriends;
            PhotonChatFriendController.OnDisplayFriends += HandleDisplayChatFriends;
        }

        private void OnDestroy()
        {
            PhotonFriendController.OnDisplayFriends -= HandleDisplayFriends;
            PhotonChatFriendController.OnDisplayFriends -= HandleDisplayChatFriends;
        }


        private void HandleDisplayFriends(List<FriendInfo> friends)
        {
            Debug.Log("UI remove prior friends displayed");
            foreach (Transform child in friendContainer)
            {
                Destroy(child.gameObject);
            }

            Debug.Log($"UI instantiate friends display {friends.Count}");
            contentRect.sizeDelta = orginalSize;

            var sortedFriends = friends.OrderByDescending(o => o.IsOnline ? 1 : 0).ThenBy(u => u.UserId);
            foreach (FriendInfo friend in sortedFriends)
            {
                UIFriend uifriend = Instantiate(uiFriendPrefab, friendContainer);
                uifriend.Initialize(friend);
                contentRect.sizeDelta += increaseSize;


            }
        }

        private void HandleDisplayChatFriends(List<string> friends)
        {
            Debug.Log("UI remove prior friends displayed");
            foreach (Transform child in friendContainer)
            {
                Destroy(child.gameObject);
            }

            Debug.Log($"UI instantiate friends display {friends.Count}");
            contentRect.sizeDelta = orginalSize;

            foreach (string friend in friends)
            {
                UIFriend uifriend = Instantiate(uiFriendPrefab);
                uifriend.Initialize(friend);
                contentRect.sizeDelta += increaseSize;
            }
        }
    }
}