using System;
using System.Collections.Generic;
using Dalamud.Plugin.Services;
using Lumina.Excel.Sheets;

namespace LLib.GameData;

public sealed class SatisfactionSupplyHelper
{
	private readonly IDataManager _dataManager;

	public SatisfactionSupplyHelper(IDataManager dataManager)
	{
		_dataManager = dataManager;
	}

	public uint[] CalculateRequestedItems(uint supplyIndex, uint seed)
	{
		List<SatisfactionSupply> list = new List<SatisfactionSupply>();
		foreach (SatisfactionSupply item in _dataManager.GetSubrowExcelSheet<SatisfactionSupply>().Flatten())
		{
			if (item.RowId == supplyIndex)
			{
				list.Add(item);
			}
		}
		uint num = (63874652 * supplyIndex) ^ (437113358 * seed);
		uint num2 = (uint)(-547857059 * (int)supplyIndex) ^ (811033966 * seed);
		uint num3 = (uint)(-311827390 * (int)supplyIndex) ^ (570616410 * seed);
		uint num4 = (uint)((-1359202047 * (int)supplyIndex) ^ (-418962442 * (int)seed));
		uint[] array = new uint[3] { 4294967295u, 4294967295u, 4294967295u };
		uint num5 = num;
		for (int i = 1; i < 4; i++)
		{
			int num6 = 0;
			for (int j = 0; j < list.Count; j++)
			{
				SatisfactionSupply satisfactionSupply = list[j];
				if (satisfactionSupply.Slot == i)
				{
					num6 += satisfactionSupply.ProbabilityPercent;
				}
			}
			uint num7 = num5 ^ (num5 << 11);
			num = num3;
			num3 = num4;
			num5 = num2;
			num4 ^= num7 ^ ((num7 ^ (num4 >> 11)) >> 8);
			num2 = num;
			if (num6 <= 0)
			{
				continue;
			}
			long num8 = num4 % num6;
			for (int k = 0; k < list.Count; k++)
			{
				SatisfactionSupply satisfactionSupply2 = list[k];
				if (satisfactionSupply2.Slot == i)
				{
					if (num8 < satisfactionSupply2.ProbabilityPercent)
					{
						array[i - 1] = (uint)k;
						break;
					}
					num8 -= satisfactionSupply2.ProbabilityPercent;
				}
			}
		}
		return array;
	}

	public int CalculateBonusGuaranteeIndex(int timestamp)
	{
		int count = _dataManager.GetExcelSheet<SatisfactionBonusGuarantee>().Count;
		if (count == 0)
		{
			return -1;
		}
		return (timestamp - 1657008000) / 604800 % count;
	}

	public static int CalculateTurnInsToNextRank(ushort currentSatisfaction, ushort maxSatisfaction, int maxTurnIns)
	{
		if (currentSatisfaction >= maxSatisfaction)
		{
			return maxTurnIns;
		}
		int num = maxSatisfaction - currentSatisfaction;
		int num2 = maxSatisfaction / maxTurnIns;
		if (num2 == 0)
		{
			return maxTurnIns;
		}
		return Math.Min((int)Math.Ceiling((double)num / (double)num2), maxTurnIns);
	}
}