using System.Collections.Generic;
using DG.Tweening;
using TMPro;
using UnityEngine;

namespace DDD
{
    public class GlobalMessageUi : BaseUi, IEventHandler<ShowGlobalMessageEvent>
    {
        private CanvasGroup _canvasGroup;
        private TextMeshProUGUI _messageText;
        private Tween _fadeTween;
        
        private readonly Queue<ShowGlobalMessageEvent> _messageQueue = new();
        private bool _isDisplayingMessage = false;

        protected override void Awake()
        {
            base.Awake();
            
            _canvasGroup = GetComponent<CanvasGroup>();
            _messageText = GetComponentInChildren<TextMeshProUGUI>();
            
            _canvasGroup.alpha = 0;
            _messageText.text = null;
        }

        protected override void TryRegister()
        {
            base.TryRegister();
            
            EventBus.Register(this);
        }

        protected override void TryUnregister()
        {
            base.TryUnregister();
            
            EventBus.Unregister(this);
            _fadeTween?.Kill();
        }

        public void Invoke(ShowGlobalMessageEvent evt)
        {
            _messageQueue.Enqueue(evt);
            TryDisplayNext();
        }

        private void TryDisplayNext()
        {
            if (_isDisplayingMessage || _messageQueue.Count == 0) return;

            var evt = _messageQueue.Dequeue();
            _isDisplayingMessage = true;

            _messageText.text = LocalizationManager.GetString(TableName.Global_Message, evt.NewMessageKey);
            Open();

            _fadeTween?.Kill();
            _fadeTween = DOTween.Sequence()
                .Append(_canvasGroup.DOFade(1f, evt.FadeDuration))
                .AppendInterval(evt.ShowDuration)
                .Append(_canvasGroup.DOFade(0f, evt.FadeDuration))
                .OnComplete(() =>
                {
                    Close();
                    _fadeTween = null;
                    _isDisplayingMessage = false;

                    // 다음 메시지 처리
                    TryDisplayNext();
                });
        }
    }
}