using System;
using UnityEngine;
using UnityEngine.UI;
using DG.Tweening;
using System.Collections;

[RequireComponent(typeof(RectTransform))]
public class ChatBulletItem : MonoBehaviour
{
    [SerializeField] RectTransform rectContent;
    [SerializeField] RichText contentText;

    [SerializeField] RectTransform rectSys;
    [SerializeField] RichText sysText;
    // 背景图左右的额外留白 (x:左边距, y:右边距)
    [SerializeField] Vector2 padding = new Vector2(50f, 50f);
    [SerializeField] Vector2 sysPadding = new Vector2(70f, 70f);
    private RectTransform rectTrans;
    private GameObject sourcePrefab;
    private Tweener moveTweener;
    private Action<ChatBulletItem> onFinishCallback;

    private void Awake()
    {
        rectTrans = GetComponent<RectTransform>();
    }

    public void Init(bool isSys, string content, ArrayList infoList, Color color, float speed, Vector2 startPos, float leftBoundary, GameObject prefab, Action<ChatBulletItem> onFinish)
    {
        if (rectTrans == null)
            rectTrans = GetComponent<RectTransform>();
        rectContent.SetActive(!isSys);
        rectSys.SetActive(isSys);

        if (infoList != null)
        {
            contentText.SetExtenalData(infoList);
            sysText.SetExtenalData(infoList);
        }

        contentText.text = content;
        sysText.text = content;
        contentText.color = color;
        sysText.color = color;
        sourcePrefab = prefab;
        onFinishCallback = onFinish;

        // 获取文本内容的理想宽度
        //LayoutRebuilder.ForceRebuildLayoutImmediate(contentText.rectTransform);
        float txtWidth = contentText.preferredWidth;

        float totalWidth = 0;
        float currentHeight = 0;
        if (!isSys)
        {
            // 计算背景图的总宽度 = 文本宽 + 左右Padding
            totalWidth = txtWidth + padding.x + padding.y;
            // 保持原有的高度
            currentHeight = rectTrans.sizeDelta.y;
            // 设置背景图(ContentImage)的大小
            rectContent.sizeDelta = new Vector2(totalWidth, currentHeight);
        }
        else
        {
            // 计算背景图的总宽度 = 文本宽 + 左右Padding
            totalWidth = txtWidth + sysPadding.x + sysPadding.y;
            // 图片的高度
            currentHeight = 39;
            // 设置背景图(ContentImage)的大小
            rectSys.sizeDelta = new Vector2(totalWidth, currentHeight);
        }


        // 设置根节点的大小
        rectTrans.sizeDelta = new Vector2(totalWidth, currentHeight);
        // 设置初始位置
        rectTrans.anchoredPosition = startPos;

        // 此时 rectTrans.rect.width 已经是我们手动设置的 totalWidth 了
        float endX = leftBoundary - totalWidth;
        float distance = Mathf.Abs(startPos.x - endX);
        float duration = distance / speed;

        // 5. 开始移动
        moveTweener?.Kill();
        moveTweener = rectTrans.DOAnchorPosX(endX, duration)
            .SetEase(Ease.Linear)
            .OnComplete(Recycle);
    }

    //ChatBulletItem最右侧的X坐标
    public float GetRightEdgeX()
    {
        return rectTrans.anchoredPosition.x + rectTrans.rect.width;
    }

    private void Recycle()
    {
        moveTweener?.Kill();
        moveTweener = null;

        onFinishCallback?.Invoke(this);

        if (GameObjectPoolManager.Instance != null && sourcePrefab != null)
        {
            GameObjectPoolManager.Instance.GetPool(sourcePrefab).Release(this.gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }

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