using System;
using System.Collections.Generic;

namespace NecromancerTome
{
	/// <summary>
	/// Группы предметов для фильтра урны-логиста (16.10.2026): «пиктограммы, которые по умолчанию выбраны и активны...
	/// изображения предмета, символизирующего группу предметов... Дух-логист будет переносить только те предметы, которые
	/// активированы в его урне. Это же прямой путь к автоматизации сортировки». Деление игры (свойство Group) грубое -
	/// «Ресурсы» смешивают руду, слитки, детали и кур, - поэтому группы свои, а предмет относится к группе по классу, тегам и
	/// имени. Предметы других модов разойдутся по тем же правилам; что не подошло никуда - «Прочее».
	/// Номер группы = номер бита в TEFeatureCinerarium.GroupMask - порядок НЕ менять (сейвы), новые - только в конец.
	/// </summary>
	public static class CinerariumGroups
	{
		public const int Cooked = 0, Canned = 1, Raw = 2, Harvest = 3, Flowers = 4, Seeds = 5, Drinks = 6, Medicine = 7, Ore = 8,
			Ingots = 9, Parts = 10, Materials = 11, Chemicals = 12, Tools = 13, Weapons = 14, Ammo = 15, Armor = 16, Mods = 17,
			Books = 18, Blocks = 19, Necro = 20, Other = 21;
		public const int Count = 22;
		public const uint All = (1u << Count) - 1;

		/// <summary>Значок группы - иконка типичного предмета (ItemIconAtlas).</summary>
		public static readonly string[] Icons =
		{
			"foodMeatStew", "foodCanChili", "foodRawMeat", "foodCropCorn", "plantedChrysanthemum3Harvest", "plantedCorn1",
			"drinkJarBoiledWater", "medicalFirstAidKit", "resourceRockSmall", "resourceForgedSteel", "resourceMechanicalParts",
			"resourceWood", "resourceGunPowder", "meleeToolPickT1IronPickaxe", "gunHandgunT1Pistol", "ammo9mmBulletBall",
			"armorMinerHelmet", "modGunLaserSight", "bookArtOfMiningLuckyStrike", "cobblestoneMaster", "necroSkull", "oldCash"
		};

		/// <summary>Ключ названия группы в Localization.csv: necroGroup0..necroGroup21.</summary>
		public static string NameKey(int _g) => "necroGroup" + _g;

		static readonly HashSet<string> OreNames = new HashSet<string>
		{
			"resourceRockSmall", "resourceRockSmallBundle", "resourceScrapIron", "resourceScrapIronBundle", "resourceScrapLead",
			"resourceLeadBundle", "resourceCoal", "resourceCoalBundle", "resourcePotassiumNitratePowder",
			"resourcePotassiumNitratePowderBundle", "resourceOilShale", "resourceOilShaleBundle", "resourceClayLump",
			"resourceCrushedSand", "resourceCobblestones", "resourceGoldNugget", "resourceSilverNugget", "resourceRawDiamond",
			"resourceSnowBall"
		};
		static readonly HashSet<string> IngotNames = new HashSet<string> { "resourceForgedIron", "resourceForgedSteel" };
		static readonly HashSet<string> ChemNames = new HashSet<string>
		{
			"resourceGunPowder", "resourceGunPowderBundle", "resourceOil", "ammoGasCan", "ammoGasCanBundle", "resourceAcid",
			"resourceGlue", "resourcePaint", "resourceTestosteroneExtract"
		};
		static readonly HashSet<string> MaterialNames = new HashSet<string>
		{
			"resourceWood", "resourceWoodBundle", "resourceCloth", "resourceLeather", "resourceBone", "resourceFeather",
			"resourceYuccaFibers", "resourcePaper", "resourceCement", "resourceConcreteMix", "resourceBeeswax", "resourceCandleStick"
		};
		static readonly HashSet<string> AmmoParts = new HashSet<string>
		{
			"resourceArrowHeadIron", "resourceArrowHeadSteelAP", "resourceBuckshot", "resourceBulletCasing", "resourceBulletTip",
			"resourceRocketCasing", "resourceRocketTip"
		};
		static readonly HashSet<string> RawNames = new HashSet<string>
		{
			"foodRawMeat", "foodRawMeatBundle", "foodEgg", "foodHoney", "foodRottingFlesh"
		};

		static readonly Dictionary<int, int> _cache = new Dictionary<int, int>();

		public static int Of(ItemValue _iv)
		{
			ItemClass ic = _iv?.ItemClass;
			if (ic == null)
			{
				return Other;
			}
			if (!_cache.TryGetValue(ic.Id, out int g))
			{
				g = Classify(ic, _iv);
				_cache[ic.Id] = g;
			}
			return g;
		}

		static bool Tag(ItemClass _ic, string _t)
		{
			return _ic.ItemTags.Test_AnySet(FastTags<TagGroup.Global>.Parse(_t));
		}

		static int Classify(ItemClass _ic, ItemValue _iv)
		{
			string n = _ic.GetItemName() ?? "";
			if (n.IndexOf("necro", StringComparison.OrdinalIgnoreCase) >= 0)
			{
				return Necro;
			}
			if (_ic is ItemClassModifier)
			{
				return Mods;
			}
			if (_ic.IsBlock())
			{
				return new ItemValue(_ic.Id).ToBlockValue().Block is BlockPlantGrowing ? Seeds : Blocks;
			}
			if (_ic is ItemClassArmor || n.StartsWith("armor") || n.StartsWith("clothing"))
			{
				return Armor;
			}
			if (n.StartsWith("book") || n.Contains("Schematic") || n.Contains("Magazine") || Tag(_ic, "books"))
			{
				return Books;
			}
			if (OreNames.Contains(n))
			{
				return Ore;
			}
			if (IngotNames.Contains(n) || n.StartsWith("unit_"))
			{
				return Ingots;
			}
			if (ChemNames.Contains(n))
			{
				return Chemicals;
			}
			if (MaterialNames.Contains(n))
			{
				return Materials;
			}
			if (AmmoParts.Contains(n) || n.StartsWith("ammo") || n.StartsWith("thrown") || Tag(_ic, "ammo"))
			{
				return Ammo;
			}
			if (n.EndsWith("Parts") || n == "partsMaster" || n.StartsWith("vehicle") && !n.EndsWith("Placeable"))
			{
				return Parts;
			}
			if (n.StartsWith("gun") || n.StartsWith("meleeWpn") || Tag(_ic, "weapon"))
			{
				return Weapons;
			}
			if (n.StartsWith("meleeTool") || n.StartsWith("tool") || n.StartsWith("bucket") || Tag(_ic, "tool"))
			{
				return Tools;
			}
			if (n.StartsWith("foodCan"))
			{
				return Canned;
			}
			if (n.StartsWith("foodCrop"))
			{
				return Harvest;
			}
			if (n.StartsWith("resourceCrop"))
			{
				return Flowers;
			}
			if (RawNames.Contains(n) || n.StartsWith("foodRaw"))
			{
				return Raw;
			}
			if (n.StartsWith("drink"))
			{
				return Drinks;
			}
			if (n.StartsWith("medical") || n.StartsWith("drug") || Tag(_ic, "medical"))
			{
				return Medicine;
			}
			if (n.StartsWith("food") || Tag(_ic, "food"))
			{
				return Cooked;
			}
			if (n.StartsWith("resource") || n == "carBattery" || n == "smallEngine" || n == "solarCell")
			{
				return Parts;
			}
			return Other;
		}
	}
}