using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

[ExecuteAlways]
public class CustomRowGrid : LayoutGroup
{
    [Tooltip("각 줄에 몇 개의 아이템을 배치할지 입력")]
    public List<int> rowItemCounts = new List<int>() { 3, 2, 3, 3 };

    public float spacingX = 100f; // 가로 간격
    public float spacingY = 100f; // 세로 간격
    public float startX = 0f;     // 시작 X 위치 (왼쪽 여백)

    public override void CalculateLayoutInputHorizontal()
    {
        base.CalculateLayoutInputHorizontal();

        int childIndex = 0;

        for (int row = 0; row < rowItemCounts.Count; row++)
        {
            int countInRow = rowItemCounts[row];

            for (int col = 0; col < countInRow; col++)
            {
                if (childIndex >= rectChildren.Count)
                    return;

                float totalWidth = (countInRow - 1) * spacingX;
                float offsetX = -totalWidth / 2f; // 가운데 정렬

                Vector2 pos = new Vector2(startX + offsetX + col * spacingX, row * -spacingY);
                SetChildAlongAxis(rectChildren[childIndex], 0, pos.x);
                SetChildAlongAxis(rectChildren[childIndex], 1, pos.y);

                childIndex++;
            }
        }
    }

    public override void CalculateLayoutInputVertical() { }
    public override void SetLayoutHorizontal() { }
    public override void SetLayoutVertical() { }
}