using System.Collections.Generic;
using UnityEngine;

namespace EasyLayout
{
	public class EasyLayoutGrid
	{
		public static int GetMaxColumnsCount(List<RectTransform> uiElements, float baseLength, EasyLayout layout, int maxColumns)
		{
			float num = baseLength;
			float num2 = ((layout.Stacking != Stackings.Horizontal) ? layout.Spacing.y : layout.Spacing.x);
			bool flag = false;
			int num3 = maxColumns;
			int num4 = 0;
			foreach (RectTransform uiElement in uiElements)
			{
				float length = layout.GetLength(uiElement);
				if (num4 == maxColumns)
				{
					flag = true;
					num3 = Mathf.Min(num3, num4);
					num4 = 1;
					num = baseLength - length;
				}
				else if (num4 == 0)
				{
					num4 = 1;
					num = baseLength - length;
				}
				else if (num >= length + num2)
				{
					num -= length + num2;
					num4++;
				}
				else
				{
					flag = true;
					num3 = Mathf.Min(num3, num4);
					num4 = 1;
					num = baseLength - length;
				}
			}
			if (!flag)
			{
				num3 = num4;
			}
			return num3;
		}

		public static List<List<RectTransform>> Group(List<RectTransform> uiElements, float baseLength, EasyLayout layout, int maxColumns = 0)
		{
			int num = 999999;
			int maxColumnsCount;
			while (true)
			{
				maxColumnsCount = GetMaxColumnsCount(uiElements, baseLength, layout, num);
				if (num == maxColumnsCount || maxColumnsCount == 1)
				{
					break;
				}
				num = maxColumnsCount;
			}
			num = maxColumnsCount;
			List<List<RectTransform>> list = new List<List<RectTransform>>();
			List<RectTransform> list2 = new List<RectTransform>();
			int num2 = 0;
			foreach (RectTransform uiElement in uiElements)
			{
				if (num2 > 0 && num2 % num == 0)
				{
					list.Add(list2);
					list2 = new List<RectTransform>();
				}
				list2.Add(uiElement);
				num2++;
			}
			if (list2.Count > 0)
			{
				list.Add(list2);
			}
			return list;
		}
	}
}