using DG.Tweening;
using SLSUtilities.UI;
using TMPro;
using UnityEngine;

namespace Cielonos.MainGame.UI
{
    /// <summary>
    /// NotificationUIArea 使用的顶部横幅，用于显示 Combat 完成等特殊提示。
    /// </summary>
    public class BattleCompletionBanner : UIElementBase
    {
        [SerializeField] private TMP_Text messageText;
        [SerializeField] private string completionMessage = "战斗结束";
        [SerializeField, Min(0f)] private float enterDuration = 0.3f;
        [SerializeField, Min(0f)] private float displayDuration = 1.5f;
        [SerializeField, Min(0f)] private float exitDuration = 0.3f;
        [SerializeField] private float slideDistance = 900f;

        private Sequence sequence;

        private void Awake()
        {
            rectTransform ??= GetComponent<RectTransform>();
            canvasGroup ??= GetComponent<CanvasGroup>();

            if (canvasGroup != null)
            {
                canvasGroup.alpha = 0f;
                canvasGroup.interactable = false;
                canvasGroup.blocksRaycasts = false;
            }

            gameObject.SetActive(true);
        }

        private void OnDestroy()
        {
            sequence?.Kill();
        }

        public void ShowBattleCompleted()
        {
            Show(completionMessage);
        }

        public void Show(string message)
        {
            if (!gameObject.activeSelf && GetComponent<NotificationUIArea>() == null)
            {
                gameObject.SetActive(true);
            }

            if (messageText != null)
            {
                messageText.text = string.IsNullOrEmpty(message) ? completionMessage : message;
            }

            sequence?.Kill();
            if (canvasGroup != null)
            {
                canvasGroup.interactable = false;
                canvasGroup.blocksRaycasts = false;
            }

            if (rectTransform == null)
            {
                if (canvasGroup != null)
                {
                    canvasGroup.alpha = 1f;
                }

                return;
            }

            Vector2 visiblePosition = rectTransform.anchoredPosition;
            Vector2 hiddenLeft = visiblePosition + Vector2.left * slideDistance;
            Vector2 hiddenRight = visiblePosition + Vector2.right * slideDistance;
            rectTransform.anchoredPosition = hiddenLeft;

            if (canvasGroup != null)
            {
                canvasGroup.alpha = 0f;
            }

            sequence = DOTween.Sequence()
                .SetUpdate(true)
                .SetAutoKill(true)
                .Pause();
            if (canvasGroup != null)
            {
                sequence.Join(canvasGroup.DOFade(1f, enterDuration));
            }

            sequence.Join(rectTransform.DOAnchorPos(visiblePosition, enterDuration).SetEase(Ease.OutCubic));
            sequence.AppendInterval(displayDuration);

            if (canvasGroup != null)
            {
                sequence.Append(canvasGroup.DOFade(0f, exitDuration));
            }

            sequence.Join(rectTransform.DOAnchorPos(hiddenRight, exitDuration).SetEase(Ease.InCubic));
            sequence.OnComplete(() =>
            {
                if (rectTransform != null)
                {
                    rectTransform.anchoredPosition = visiblePosition;
                }

                if (canvasGroup != null)
                {
                    canvasGroup.alpha = 0f;
                }
            });
            sequence.Play();
        }
    }
}