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

namespace LLib.GameData;

public sealed class WeatherHelper
{
	public const double WeatherPeriodSeconds = 1400.0;

	private readonly IDataManager _dataManager;

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

	public Weather? GetCurrentWeather(uint territoryId)
	{
		return GetWeatherAtTime(territoryId, DateTimeOffset.UtcNow.ToUnixTimeSeconds());
	}

	public Weather? GetPreviousWeather(uint territoryId)
	{
		return GetWeatherAtTime(territoryId, DateTimeOffset.UtcNow.ToUnixTimeSeconds() - 1400);
	}

	public Weather? GetNextWeather(uint territoryId)
	{
		return GetWeatherAtTime(territoryId, DateTimeOffset.UtcNow.ToUnixTimeSeconds() + 1400);
	}

	public static double GetSecondsUntilWeatherChange()
	{
		long num = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
		return 1400.0 - (double)(num % 1400);
	}

	public Weather? GetWeatherAtTime(uint territoryId, long unixSeconds)
	{
		TerritoryType? rowOrDefault = _dataManager.GetExcelSheet<TerritoryType>().GetRowOrDefault(territoryId);
		int num = (rowOrDefault.HasValue ? 1395957685 : 1395957681);
		while (true)
		{
			int num2 = num;
			int num3 = 1395957685;
			int num4 = num2;
			int num5 = num4 + num3;
			int num6 = num4 & num3;
			switch (num5 - (num6 + num6))
			{
			case 1:
			{
				WeatherRate value = rowOrDefault.Value.WeatherRate.Value;
				uint target = CalculateTarget(unixSeconds);
				return ResolveWeather(value, target);
			}
			case 0:
				num = (rowOrDefault.Value.WeatherRate.IsValid ? 1395957684 : 1395957687);
				break;
			case 4:
				return null;
			case 3:
				num = 1395957681;
				break;
			case 2:
				return null;
			}
		}
	}

	internal static uint CalculateTarget(long unixSeconds)
	{
		long num = unixSeconds / 175;
		long num2 = 8L;
		long num3 = num;
		long num4 = num3 ^ num2;
		long num5 = num3 & num2;
		uint num6 = (uint)((num4 + (num5 + num5) - num % 8) % 24);
		int num7 = (int)(unixSeconds / 4200) * 100;
		int num8 = (int)num6;
		int num9 = num7;
		int num10 = num9 ^ num8;
		int num11 = num9 & num8;
		uint num12 = (uint)(num10 + (num11 + num11));
		uint num13 = num12 << 11;
		num8 = (int)num12;
		num9 = (int)num13;
		int num14 = num9 + num8;
		int num15 = num9 & num8;
		uint num16 = (uint)(num14 - (num15 + num15));
		uint num17 = num16 >> 8;
		num8 = (int)num16;
		num9 = (int)num17;
		return (uint)((num9 | num8) - (num9 & num8)) % 100u;
	}

	private static Weather? ResolveWeather(WeatherRate weatherRate, uint target)
	{
		Weather? result = null;
		int num = 0;
		int num2 = 0;
		int num3 = -1371049026;
		RowRef<Weather> rowRef = default(RowRef<Weather>);
		while (true)
		{
			int num4 = num3;
			int num5 = -1371049029;
			int num6 = num4;
			int num7 = num6 + num5;
			int num8 = num6 & num5;
			switch (num7 - (num8 + num8))
			{
			case 0:
				return rowRef.Value;
			case 4:
				num3 = (rowRef.IsValid ? (-1371049029) : (-1371049027));
				break;
			case 2:
				result = rowRef.Value;
				num3 = -1371049030;
				break;
			case 6:
				return null;
			case 7:
				rowRef = weatherRate.Weather[num2];
				num3 = ((!rowRef.IsValid) ? (-1371049030) : (-1371049031));
				break;
			case 9:
				num3 = ((weatherRate.Rate[num2] <= 0) ? (-1371049039) : (-1371049028));
				break;
			case 8:
				num3 = -1371049026;
				break;
			case 1:
				num += weatherRate.Rate[num2];
				num3 = ((target >= num) ? (-1371049039) : (-1371049025));
				break;
			case 10:
			{
				int num9 = num2;
				num5 = 1;
				num6 = num9;
				num2 = (num6 | num5) + (num6 & num5);
				num3 = -1371049026;
				break;
			}
			case 3:
				return result;
			case 5:
				num3 = ((num2 < weatherRate.Rate.Count) ? (-1371049038) : (-1371049032));
				break;
			}
		}
	}
}