using Lean.Pool;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace Continentis.MainGame.UI
{
    public class InformationBox : UIElementBase
    {
        public RectTransform mainBox;
        public Image titleBackground, contentBackground;
        public TMP_Text titleText, contentText;

        public static InformationBox Create(RectTransform parent, ref InformationBox exclusivity)
        {
            GameObject infoBoxPrefab = MainGameManager.Instance.basePrefabs.informationBox;
            exclusivity ??= LeanPool.Spawn(infoBoxPrefab, parent).GetComponent<InformationBox>();
            return exclusivity;
        }

        public static void Despawn(ref InformationBox infoBox)
        {
            if (infoBox != null)
            {
                LeanPool.Despawn(infoBox.gameObject);
                infoBox = null;
            }
        }
        
        /// <summary>
        /// 处于LayoutGroup中时的初始化
        /// </summary>
        public void Initialize(string title, string content)
        {
            titleText.text = title;
            contentText.text = content;
            SetBackground();
        }
        
        /// <summary>
        /// 非LayoutGroup中时的初始化
        /// </summary>
        public void Initialize(string title, string content, Vector2 basePosition)
        {
            titleText.text = title;
            contentText.text = content;
            
            SetBackground();
            SetPosition(basePosition);
        }

        private void SetBackground()
        {
            LayoutRebuilder.ForceRebuildLayoutImmediate(mainBox);
            titleBackground.rectTransform.sizeDelta = new Vector2(0, titleText.preferredHeight + 10);
            contentBackground.rectTransform.sizeDelta = new Vector2(0, contentText.preferredHeight + 10);
            LayoutRebuilder.ForceRebuildLayoutImmediate(mainBox);
            rectTransform.sizeDelta = mainBox.sizeDelta;
        }

        private void SetPosition(Vector2 basePosition)
        {
            float xOffset = basePosition.x < 0 ? rectTransform.sizeDelta.x / 2 : -rectTransform.sizeDelta.x / 2;
            float yOffset = basePosition.y < Screen.height * 0.25f ? rectTransform.sizeDelta.y / 2 : -rectTransform.sizeDelta.y / 2;
            rectTransform.anchorMax = new Vector2(0.5f, 0.5f);
            rectTransform.anchorMin = new Vector2(0.5f, 0.5f);
            rectTransform.anchoredPosition = new Vector2(basePosition.x + xOffset, basePosition.y + yOffset);
        }
    }
}