ItemTool = {};

----------------------------------- 武器 -----------------------------------

--- 设置玩家所有武器槽武器的子弹属性
---@param InPawn UGCPlayerPawn_C 玩家
---@param InfiniteType EFillBulletType 无限子弹类型
---@param IsEnable bool 是否设置
function ItemTool.SetAllWeaponInfinite(InPawn, InfiniteType, IsEnable)
	if IsEnable == nil then IsEnable = true; end
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		ItemTool.SetWeaponInfinite(InPawn, Weapon, InfiniteType, IsEnable);
	end
end

---@param InWeapon ASTExtraShootWeapon 射击武器
---@param InfiniteType EFillBulletType 武器无限子弹类型
---@param IsEnable bool 是否开启
function ItemTool.SetWeaponInfinite(InPawn, InWeapon, InfiniteType, IsEnable)
	if UE.IsValid(InWeapon) and ItemTool.IsShootWeapon(InWeapon) then
		if InfiniteType == EFillBulletType.Infinite then
			UGCGunSystem.EnableInfiniteBullets(InWeapon, IsEnable);
		elseif InfiniteType == EFillBulletType.ClipInfinite then
			UGCGunSystem.EnableClipInfiniteBullets(InWeapon, IsEnable);
		elseif InfiniteType == EFillBulletType.Fill then
			ItemTool.FillWeaponBullet(InPawn, InWeapon);
		end
	end
end

---@param InPawn UGCPlayerPawn_C
function ItemTool.FillAllWeaponBullets(InPawn)
	InPawn:SetAllWeaponBulletNumToMaxOnServer(true, false)
end

---@param InPawn UGCPlayerPawn_C
---@param InWeapon ASTExtraWeapon
function ItemTool.FillWeaponBullet(InPawn, InWeapon)
	InPawn:SetTargetWeaponBulletNumToMaxOnServer(InWeapon, true, false);
end

---@param InPawn UGCPlayerPawn_C
function ItemTool.FillCurrentWeapon(InPawn)
	local Weapon = UGCWeaponManagerSystem.GetCurrentWeapon(InPawn);
	if ItemTool.IsValidWeapon(Weapon) then
		InPawn:SetTargetWeaponBulletNumToMaxOnServer(Weapon, true, false);
	end
end

---@param InWeapon ASTExtraWeapon
function ItemTool.IsValidWeapon(InWeapon)
	return InWeapon ~= nil and UE.IsValid(InWeapon);
end

---@param InPawn UGCPlayerPawn_C
---@param Weapons ASTExtraShootWeapon[]
function ItemTool.GetShootWeapon(InPawn, Weapons)
	if Weapons == nil then Weapons = {}; end
	for i, InEnum in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, InEnum);
		if Weapon ~= nil and UE.IsValid(Weapon) and ItemTool.IsShootWeapon(Weapon) then
			table.insert(Weapons, Weapon);
		end
	end
	return Weapons;
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param InWeaponId int32 武器 ID
---@param FillBulletType EFillBulletType 无限子弹类型
---@param IsEnable bool 是否设置
function ItemTool.SetWeaponInfiniteById(InPawn, InWeaponId, FillBulletType, IsEnable)
	if FillBulletType ~= nil then
		if FillBulletType <= 3 then
			-- 获取这个武器
			local Weapons = ItemTool.GetWeaponsById(InPawn, InWeaponId);
			for i, Weapon in pairs(Weapons) do
				ItemTool.SetWeaponInfinite(InPawn, Weapon, FillBulletType, IsEnable);
			end
			table.func(InPawn, "SetInfiniteType", FillBulletType)
		else
			if WeaponAmmunitionItem[InWeaponId] and FillBulletType > 0 then
				UGCBackPackSystem.AddItem(InPawn, WeaponAmmunitionItem[InWeaponId], FillBulletType);
			end
		end
		--ItemTool.SetAllWeaponInfinite(InPawn, EFillBulletType.Fill, IsEnable);
	end
end

--- 找到玩家身上的一把枪械或者近战武器这些
---@param InPawn UGCPlayerPawn_C 玩家
---@param IsForce bool 是否强制找到一把枪，默认都是强制
---@return ASTExtraWeapon
function ItemTool.GetPlayerFirstWeapon(InPawn, IsForce)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if UE.IsValid(Weapon) then return Weapon; end
	end
	return nil;
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param IsForce bool 是否强制要删除一个武器，默认是第一把武器
function ItemTool.DropCurrentWeapon(InPawn, IsForce)
	if not UE.IsValid(InPawn) then return end
	local Weapon = ItemTool.GetPlayerFirstWeapon(InPawn, IsForce);
	if not UE.IsValid(Weapon) then return end
	local WeaponId = Weapon:GetWeaponItemID();
	local Parts    = ItemTool.GetWeaponParts(Weapon)
	if not table.isEmpty(Parts) then
		for i, v in pairs(Parts) do
			UGCBackPackSystem.DropItem(InPawn, v, 1, true);
		end
	end
	UGCBackPackSystem.DropItem(InPawn, WeaponId, 1, true);
	ItemTool.DropBullets(InPawn, WeaponId)
end

function ItemTool.DropBullets(InPawn, InWeaponId)
	local AllItems = UGCBackPackSystem.GetAllItemData(InPawn)
	local AmmoType = WeaponAmmunitionItem[InWeaponId];
	for i, v in pairs(AllItems) do
		if AmmoType == v.ItemID then
			UGCBackPackSystem.DropItem(InPawn, v.ItemID, v.Count, true);
		end
	end
end

---@param InPawn UGCPlayerPawn_C
function ItemTool.DropMeleeWeapon(InPawn, IsAll)
	local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, ESurviveWeaponPropSlot.SWPS_MeleeWeapon)
	if not UE.IsValid(Weapon) then return end
	UGCBackPackSystem.DropItem(InPawn, Weapon:GetWeaponItemID(), 1, true);
	if not IsAll then return end
	-- 掉落
	local AllItems = UGCBackPackSystem.GetAllItemData(InPawn)
	if table.isEmpty(AllItems) then return end
	for i, v in pairs(AllItems) do
		if GetWeaponIdType(v.ItemID) then UGCBackPackSystem.DropItem(InPawn, v.ItemID, v.Count, true); end
	end
end

---@param InPawn UGCPlayerPawn_C
---@param InWeaponId int32
function ItemTool.ReplaceSameTypeWeapon(InPawn, InWeaponId)
	UGCPawnSystem.LeavePawnState(InPawn, EPawnState.GunReload);
	local NextWeaponIdType = GetWeaponIdType(InWeaponId)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if UE.IsValid(Weapon) then
			local WeaponId = Weapon:GetWeaponID()
			local IdType   = GetWeaponIdType(WeaponId);
			if NextWeaponIdType == IdType then
				ItemTool.ClearWeapon(InPawn, Weapon);
				ItemTool.AddWeaponItem(InPawn, InWeaponId, 1, true, InPawn:GetInfiniteType())
				return
			end
		end
	end
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param InWeaponId int32 武器 ID
---@param IsDestroy bool 是否销毁
---@param bPart bool 是否要移除配件
function ItemTool.DropWeaponById(InPawn, InWeaponId, IsDestroy, bPart, all)
	-- 检查是否有配件，如果有配件，也一并掉到地上
	local Weapons = ItemTool.GetWeaponsById(InPawn, InWeaponId);
	for i, Weapon in pairs(Weapons) do
		if UE.IsValid(Weapon) then
			ItemTool.DropWeaponByWeapon(Weapon, IsDestroy, bPart);
			if not all then return ; end
		end
	end
end

--- 掉落武器和配件
---@param InWeapon ASTExtraWeapon
---@param IsDestroy bool
---@param bPart bool
function ItemTool.DropWeaponByWeapon(InWeapon, IsDestroy, bPart)
	local Pawn = InWeapon:GetOwnerPawn();
	if not UE.IsValid(Pawn) then return ; end
	local Id    = InWeapon:GetWeaponItemID();
	local Parts = ItemTool.GetWeaponParts(InWeapon);
	if table.isEmpty(Parts) or not bPart then
		UGCBackPackSystem.DropItem(Pawn, Id, 1, IsDestroy);
		return ;
	end
	for i, v in pairs(Parts) do
		UGCBackPackSystem.DropItem(Pawn, v, 1, IsDestroy);
	end
	UGCBackPackSystem.DropItem(Pawn, Id, 1, IsDestroy);
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param InWeaponId int32 武器 ID
---@return ASTExtraShootWeapon* 射击武器
function ItemTool.GetWeaponsById(InPawn, InWeaponId)
	local Weapons = {};
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if UE.IsValid(Weapon) then
			if Weapon:GetWeaponItemID() == InWeaponId then
				table.insert(Weapons, Weapon);
			end
		end
	end
	return Weapons;
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param InWeaponId int32 武器 ID
---@param InCount int32 武器数量
---@param bAppend bool 是否需要添加配件
---@param FillBulletType EFillBulletType 是否需要添加子弹
function ItemTool.AddWeaponItem(InPawn, InWeaponId, InCount, bAppend, FillBulletType)
	if not UE.IsValid(InPawn) then return end
	local bHadAdd = false;
	repeat bHadAdd = UGCBackPackSystem.AddItem(InPawn, InWeaponId, InCount) until bHadAdd;
	local Weapon = ItemTool.GetLastWeapon(InPawn, InWeaponId);
	if not bAppend then return Weapon end
	ItemTool.AddWeaponParts(InPawn, InWeaponId, bAppend);
	if FillBulletType ~= nil then
		ItemTool.SetWeaponInfinite(InPawn, Weapon, InPawn:GetInfiniteType(), true);
	end
	return Weapon;
end

--- 添加配件
---@param Weapon ASTExtraWeapon
function ItemTool.AddWeaponParts(InPawn, Weapon, IsAppend)
	if IsAppend then
		local WeaponId = Weapon:GetWeaponItemID();
		UGCLogSystem.Log("[ItemTool.AddWeaponParts] WeaponId = %d", WeaponId)
		local Items   = nil;
		local TheList = nil;
		if WeaponSuits[WeaponId] then
			TheList = WeaponSuits[WeaponId][EWeaponPartType.Best];
			if not table.isEmpty(TheList) then
				Items = TheList[1];
			end
		end
		local AccountInfo = UGCPlayerStateSystem.GetPlayerAccountInfo(InPawn.PlayerKey)
		if AccountInfo then
			local ArchiveData = UGCPlayerStateSystem.GetPlayerArchiveData(AccountInfo.UID)
			if ArchiveData ~= nil and ArchiveData.Weapons and ArchiveData.Weapons[WeaponId] then
				Items = ArchiveData.Weapons[WeaponId];
			end
		end
		if table.isEmpty(Items) then return end
		UGCLogSystem.LogTree(string.format("[ItemTool.AddWeaponParts] Items ="), Items);
		for i, v in pairs(Items) do
			local bHadAdd, Times = false, 5;
			repeat
				bHadAdd = UGCBackPackSystem.AddItem(InPawn, v, 1);
				Times   = Times - 1;
			until bHadAdd or Times <= 0;
		end
	end
end

--- 替换当前的武器
---@param InPawn UGCPlayerPawn_C 玩家
---@param InWeaponId int32 武器 ID
function ItemTool.ReplaceCurrentWeapon(InPawn, InWeaponId)
	UGCPawnSystem.LeavePawnState(InPawn, EPawnState.GunReload);
	ItemTool.DropCurrentWeapon(InPawn, true);
	ItemTool.DropMeleeWeapon(InPawn, false);
	UGCLogSystem.Log("[ItemTool.ReplaceCurrentWeapon] 执行 InWeaponId = %s", tostring(InWeaponId));
	ItemTool.AddWeaponItem(InPawn, InWeaponId, 1, true, InPawn:GetInfiniteType());
end

---100000 - 199999 武器
---200000 - 299999 配件
---300000 - 399999 子弹
---400000 - 499999 衣服
---500000 - 599999 背包 / 护甲 / 头盔等
---600000 - 699999 补给品、投掷物等
---700000 - 799999 降落伞
---800000 - 899999 头盔、护甲皮肤
--- >= 8300000 自定义物品
--- 清除玩家身上所有的武器和配件
---@param InPawn UGCPlayerPawn_C 玩家
---@param bWeapon bool 是否移除武器
---@param bPart bool 是否移除配件
---@param bCustomItem bool 是否移除自定义物品
---@param bRecruit bool 是否移除补给品
function ItemTool.ClearAllWeaponsAndProp(InPawn, bWeapon, bPart, bBullet, bCustomItem, bRecruit)
	local AllItem = UGCBackPackSystem.GetAllItemData(InPawn);
	local func    = function(v)
		if v == nil then return true end
		return v
	end
	bWeapon       = func(bWeapon);
	bPart         = func(bPart);
	bBullet       = func(bBullet);
	bCustomItem   = func(bCustomItem);
	bRecruit      = func(bRecruit);
	if AllItem then
		for Index, Item in pairs(AllItem) do
			if (bWeapon and Item.ItemID >= 100000 and Item.ItemID < 200000) -- 武器
					or (bPart and Item.ItemID >= 200000 and Item.ItemID < 300000) -- 配件
					or (bBullet and Item.ItemID >= 300000 and Item.ItemID < 400000) -- 子弹等
					or (bCustomItem and Item.ItemID >= 8300000) -- 自定义的东西
					or (bRecruit and Item.ItemID > 500000 and Item.ItemID < 700000) -- 补给品
			then
				UGCBackPackSystem.DropItem(InPawn, Item.ItemID, Item.Count, true)
			end
		end
	end
end

--- 清除玩家手里的武器，如果 bHandTo1 表示如果手里没武器，那么清空第一把主武器
---@param InPawn UGCPlayerPawn_C
---@param bHandTo1 bool 是否当玩家手里没武器的时候清空第一把武器？
function ItemTool.ClearCurrentWeapon(InPawn, bHandTo1)
	local Weapon = UGCWeaponManagerSystem.GetCurrentWeapon(InPawn)
	if Weapon == nil and bHandTo1 then
		Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, ESurviveWeaponPropSlot.SWPS_MainShootWeapon1);
		if Weapon == nil then return end
	end
	
	ItemTool.ClearWeapon(InPawn, Weapon);
end

---@param Weapon ASTExtraWeapon
---@param InPawn UGCPlayerPawn_C
---@return table<int32, FItemDefineID>
function ItemTool.GetWeaponPartsDefineIDs(InPawn, Weapon)
	local BackComp    = UGCBackPackSystem.GetBackpackComponent(InPawn);
	local InstanceIds = {};
	local CustomList  = {};
	for i = 0, 5 do
		local DefineID = Weapon:GetWeaponAttachmentIDBySocketType(i);
		if DefineID.bValidInstance and DefineID.bValidItem then
			InstanceIds[DefineID.InstanceID] = DefineID;
			CustomList[i]                    = {
				TypeSpecificID = DefineID.TypeSpecificID,
				InstanceID     = DefineID.InstanceID,
				Type           = DefineID.Type,
			};
		end
	end
	return InstanceIds, CustomList;
end

---@param Weapon ASTExtraWeapon
---@param InPawn UGCPlayerPawn_C
function ItemTool.ClearWeapon(InPawn, Weapon)
	local BackComp    = UGCBackPackSystem.GetBackpackComponent(InPawn);
	local InstanceIds = ItemTool.GetWeaponPartsDefineIDs(InPawn, Weapon);
	for i, v in pairs(InstanceIds) do
		local bDrop = BackComp:DropItem(v, 1, EBattleItemDropReason.Force);
		if not bDrop then
			UGCLogSystem.Log("[ItemTool.ClearWeapon] 移除配件失败，Weapon Id = %d, Part Id = %d", Weapon:GetWeaponItemID(), v.TypeSpecificID);
		end
	end
	-- 寻找当前的武器子弹，再清除这些子弹
	local WeaponInstanceID = Weapon:GetItemDefineID().InstanceID
	-- 找到子弹
	local AmmoId           = WeaponAmmunitionItem[Weapon:GetWeaponItemID()];
	if type(AmmoId) ~= 'number' then return ; end
	local Count = BackComp:GetItemCount(AmmoId)
	if Count > 0 then
		UGCBackPackSystem.DropItem(InPawn, AmmoId, Count, true);
		UGCLogSystem.Log("[ItemTool.ClearWeapon] 移除 %d 子弹 %d 个", AmmoId, Count)
	end
	UGCLogSystem.Log("[ItemTool.ClearWeapon] 移除 武器 %d", Weapon:GetWeaponItemID())
	UGCBackPackSystem.DropItemByInstanceID(InPawn, WeaponInstanceID, 1, true);
end

--- 清空背包中的所有配件和子弹
function ItemTool.OnlyClearParts(InPawn)
	local Comp    = UGCBackPackSystem.GetBackpackComponent(InPawn)
	local AllData = UGCBackPackSystem.GetAllItemData(InPawn)
	for i, v in pairs(AllData) do
		if GetCustomItemType(v.ItemID) == ECustomItemType.Bullet or
				GetCustomItemType(v.ItemID) == ECustomItemType.Part
		then
			UGCBackPackSystem.DropItemByInstanceID(InPawn, v.InstanceID, v.Count, true);
		end
	end
end

--- 获取武器的所有配件
---@param InWeapon ASTExtraWeapon 武器
---@return table<int32, int32>
function ItemTool.GetWeaponParts(InWeapon)
	local Table = {};
	if ItemTool.IsShootWeapon(InWeapon) then
		if InWeapon.AttachedAttachmentID then
			for i, v in pairs(InWeapon.AttachedAttachmentID) do
				if not table.hasValue(Table, v) then Table[#Table + 1] = v; end
			end
		end
	end
	return Table;
end

--- 是否是射击枪械类
---@param InWeapon ASTExtraWeapon 武器
---@return bool 是否是射击枪械类
function ItemTool.IsShootWeapon(InWeapon)
	if InWeapon == nil or not UE.IsValid(InWeapon) then return false end
	return UE.IsA(InWeapon, UGCGameSystem.GameState:GetShootWeaponClass());
end

---@param InPawn UGCPlayerPawn_C 玩家
---@param IsAll bool 是否所有武器都需要 Reload，如果不是，默认手中拿的或者第一把枪
function ItemTool.Reload(InPawn, IsAll)
	if UE_SERVER then
		for i, v in pairs(ShootWeaponEnums) do
			local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
			if UE.IsValid(Weapon) and ItemTool.IsShootWeapon(Weapon) then
				ItemTool.SetWeaponInfinite(InPawn, Weapon, EFillBulletType.Fill);
				if not IsAll then return end
			end
		end
	else
		local Weapon = UGCWeaponManagerSystem.GetCurrentWeapon(InPawn)
		if UE.IsValid(Weapon) and ItemTool.IsShootWeapon(Weapon) then Weapon:Reload(); end
	end
end

---@param InPawn UGCPlayerPawn_C
---@param InFunc fun(Weapon:ASTExtraWeapon)
function ItemTool.ForeachWeapon(InPawn, InFunc)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if UE.IsValid(Weapon) then InFunc(Weapon); end
	end
end

function ItemTool.ForeachShootWeapons(InPawn, InFunc)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if ItemTool.IsShootWeapon(Weapon) then InFunc(Weapon); end
	end
end

---@param InWeaponId int32
---@return bool 是否是射击武器
function ItemTool.IsShootWeaponById(InWeaponId)
	return GetWeaponIdType(InWeaponId) ~= EWeaponIdType.Melee;
end

---@param InWeaponId int32
---@return bool 是否是近战武器
function ItemTool.IsMeleeWeaponById(InWeaponId)
	return GetWeaponIdType(InWeaponId) == EWeaponIdType.Melee;
end

----------------------------------- 普通物品 -----------------------------------

--- 一定可以添加上去武器
---@param InPawn UGCPlayerPawn_C 玩家
---@param InItemId int32 物品 ID
---@param InCount int32 物品数量
---@vararg bool|int32 可变参数
---@return int32 Instance ID
function ItemTool.AddItem(InPawn, InItemId, InCount, ...)
	if not UE.IsValid(InPawn) then return end
	local HadSameItem, SameItemInstanceId = ItemTool.HasSameItem(InPawn, InItemId)
	local bHadAdd, Times                  = false, 10;
	-- 此处确保能够添加
	repeat
		bHadAdd = UGCBackPackSystem.AddItem(InPawn, InItemId, InCount)
		Times   = Times - 1;
	until bHadAdd or Times <= 0;
	
	local InstanceId = nil;
	local Items      = UGCBackPackSystem.GetAllItemData(InPawn)
	for i, v in pairs(Items) do
		if (v.ItemID == InItemId) then
			if (not HadSameItem) or (HadSameItem and v.InstanceID ~= SameItemInstanceId) then
				InstanceId = v.InstanceID;
				break ;
			end
		end
	end
	local Params = { ... };
	if table.isEmpty(Params) or GetCustomItemType(InItemId) ~= ECustomItemType.Weapon then
		return InstanceId;
	end
	local Weapon = ItemTool.GetWeaponByInstanceId(InPawn, InstanceId);
	if Weapon == nil or not ItemTool.IsShootWeapon(Weapon) then return InstanceId; end
	if type(Params[1]) == 'boolean' and type(Params[2]) == 'number' then
		local bAppend        = Params[1];
		local FillBulletType = Params[2];
		-- 那说明要添加进去
		if ItemTool.IsShootWeapon(Weapon) then
			ItemTool.AddWeaponParts(InPawn, Weapon, bAppend);
			ItemTool.SetWeaponInfinite(InPawn, Weapon, FillBulletType, true);
		end
	elseif type(Params[1]) == 'int32' then
		local FillBulletType = Params[1];
		ItemTool.SetWeaponInfinite(InPawn, Weapon, FillBulletType, true);
	end
	return InstanceId;
end

function ItemTool.HasSameItem(InPawn, InItemId)
	local AllItems = UGCBackPackSystem.GetAllItemData(InPawn);
	for i, v in pairs(AllItems) do
		if v.ItemID == InItemId then return true, v.InstanceID; end
	end
	return false, nil;
end

function ItemTool.GetItemInstanceId(InPawn, InItemId, Last)
	local AllItems    = UGCBackPackSystem.GetAllItemData(InPawn);
	local InstanceIds = {};
	for i, v in pairs(AllItems) do
		if v.ItemID == InItemId then table.insert(InstanceIds, v.InstanceID) end
	end
	if #InstanceIds == 1 then return InstanceIds[1]; end
	if Last then
		local InstanceId = -1;
		for i, v in pairs(InstanceIds) do
			if v > InstanceId then InstanceId = v; end
		end
		return InstanceId;
	end
	return InstanceIds[1];
end

function ItemTool.GetWeaponItemInstanceId(InPawn, InWeaponId, Last)
	local InstanceIds = {};
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		if Weapon then
			if Weapon:GetWeaponItemID() == InWeaponId then
				table.insert(InstanceIds, Weapon:GetItemDefineID().InstanceID);
			end
		end
	end
	if #InstanceIds == 1 then return InstanceIds[1]; end
	if Last then
		local InstanceId = -1;
		for i, v in pairs(InstanceIds) do
			if v > InstanceId then InstanceId = v; end
		end
		return InstanceId;
	end
	return InstanceIds[1];
end

--- 获取最后获得到的武器
function ItemTool.GetLastWeapon(InPawn, InWeaponId)
	local WeaponRet  = nil;
	local InstanceId = 0;
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		if Weapon then
			local TheId  = Weapon:GetItemDefineID().InstanceID;
			local ItemId = Weapon:GetWeaponItemID();
			if (InWeaponId == nil) or (InWeaponId == ItemId) then
				if TheId > InstanceId then
					InstanceId = TheId;
					WeaponRet  = Weapon;
				end
			end
		end
	end
	return WeaponRet;
end

----------------------------------- 护甲 -----------------------------------

function ItemTool.ReplaceItem(InPawn, InItemId)
	local Items = UGCBackPackSystem.GetAllItemData(InPawn)
	local TheId = GetItemIdType(InItemId)
	for i, v in pairs(Items) do
		if GetCustomItemType(v.ItemID) == ECustomItemType.Equipment and GetItemIdType(v.ItemID) == TheId then
			UGCBackPackSystem.DropItem(InPawn, v.ItemID, v.Count, true);
		end
	end
	UGCBackPackSystem.AddItem(InPawn, InItemId, 1);
end

---@param InPawn UGCPlayerPawn_C
function ItemTool.RemoveArmorItem(InPawn)
	local Item = UGCBackPackSystem.GetConsumablesInBackpack(InPawn);
	for i, v in pairs(Item) do
		local ItemTable = UE.ToTable(v)
		UGCLogSystem.LogTree(string.format("[ItemTool.RemoveArmorItem] ItemTable ="), ItemTable)
	end
end

---@param InPawn UGCPlayerPawn_C
---@return table<int32, ESurviveWeaponPropSlot>
function ItemTool.PawnWeaponSlots(InPawn)
	local Slots = {};
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v);
		if Weapon then table.insert(Slots, v); end
	end
	return Slots;
end

function ItemTool.GetWeaponType(InWeaponId)
	return InWeaponId // 1000;
end

function ItemTool.CheckPlayerHasWeapon(InPawn, InWeaponId)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		if Weapon then
			if Weapon:GetWeaponItemID() == InWeaponId then return true, v; end
		end
	end
	return false, nil;
end

---@param InPawn UGCPlayerPawn_C
---@param InItemId int32
function ItemTool.CheckPawnHasItemId(InPawn, InItemId)
	local AllItemDatas = UGCBackPackSystem.GetAllItemData(InPawn);
	for i, v in pairs(AllItemDatas) do
		if v.ItemID == InItemId then return true, v.Count; end
	end
	return false, 0;
end

--- 通过 InstanceID 获取武器实例
function ItemTool.GetWeaponByInstanceId(InPawn, InstanceId)
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		if Weapon then
			if Weapon:GetItemDefineID().InstanceID == InstanceId then
				return Weapon;
			end
		end
	end
	return nil;
end

function ItemTool.ClearAllItems(InPawn)
	local Comp = UGCBackPackSystem.GetBackpackComponent(InPawn)
	Comp:ClearItems();
end

function ItemTool.GetAllWeaponPartDefineIDs(InPawn)
	local Ret = {};
	for i, v in pairs(ShootWeaponEnums) do
		local Weapon = UGCWeaponManagerSystem.GetWeaponBySlot(InPawn, v)
		if Weapon then
			local DefineIDs = ItemTool.GetWeaponPartsDefineIDs(InPawn, Weapon);
			for c, d in pairs(DefineIDs) do
				Ret[c] = d;
			end
		end
	end
	return Ret;
end

---@param InPawn UGCPlayerPawn_C
---@param InList table<int32, ECustomItemType>
---@param bWeaponParts bool 是否清除武器上的配件
function ItemTool.ClearItemsByCustomItemType(InPawn, InList, bWeaponParts)
	-- 找到武器上面的
	local Items = UGCBackPackSystem.GetAllItemData(InPawn)
	if InList == nil then
		InList = {
			ECustomItemType.Bullet,
			ECustomItemType.Part,
		}
	end
	local BaiMingDan = {};
	if bWeaponParts and table.hasValue(InList, ECustomItemType.Part) then
		BaiMingDan = ItemTool.GetAllWeaponPartDefineIDs(InPawn);
		UGCLogSystem.LogTree(string.format("[ItemTool.ClearItemsByCustomItemType] BaiMingDan ="), BaiMingDan)
	end
	local Func = function(InType)
		for i, v in pairs(InList) do
			if v == InType then return true; end
		end
		return false;
	end
	for i, v in pairs(Items) do
		local ItemType = GetCustomItemType(v.ItemID)
		if Func(ItemType) and BaiMingDan[v.InstanceID] == nil then
			local bSuccess, Times = false, 10;
			repeat
				bSuccess = UGCBackPackSystem.DropItemByInstanceID(InPawn, v.InstanceID, v.Count, true)
				Times    = Times - 1;
			until bSuccess or Times <= 0;
		end
	end
end

--- 添加所有的握把
function ItemTool.AddAllGrip(InPawn, WithoutList)
	local WithoutTable = {};
	if not table.isEmpty(WithoutList) then
		for i, v in pairs(WithoutList) do
			WithoutTable[v] = true;
		end
	end
	for i, v in pairs(WeaponTypeParts[EWeaponPartType.Grip]) do
		if WithoutTable[v] == nil then
			ItemTool.AddItem(InPawn, v, 1);
		end
	end
end

--- 添加枪口让玩家装备
function ItemTool.AddAllMuzzle(InPawn, InWeaponId, WithoutList)
	-- 找到 WeaponSuits
	if table.isEmpty(WeaponSuits[InWeaponId]) then return ; end
	local Muzzles = WeaponSuits[InWeaponId][EWeaponPartType.Muzzle]
	if table.isEmpty(Muzzles) then return ; end
	local WithoutTable = {};
	if not table.isEmpty(WithoutList) then
		for i, v in pairs(WithoutList) do
			WithoutTable[v] = true;
		end
	end
	for i, v in pairs(Muzzles) do
		if WithoutTable[v] == nil then
			ItemTool.AddItem(InPawn, v, 1);
		end
	end
end

---@param InWeaponPartType EWeaponPartType
function ItemTool.GetWeaponAttachmentSocketType(InWeaponPartType)
	return WeaponTypeName[InWeaponPartType].WeaponAttachmentSocketType;
end

---@param Weapon ASTExtraWeapon
---@param InType EWeaponAttachmentSocketType
---@return FItemDefineID
function ItemTool.GetDefineIDBySocketType(Weapon, InType)
	local DefineId = Weapon:GetWeaponAttachmentIDBySocketType(InType)
	if DefineId.bValidItem and DefineId.bValidInstance then
		return DefineId;
	end
	return nil;
end

function ItemTool.AddRangeItems(InPawn, Begin, End)
	for i = Begin, End do
		if UGCItemSystem.IsUGCItem(i) then
			local Times    = 10;
			local bSuccess = false;
			repeat
				bSuccess = UGCBackPackSystem.AddItem(InPawn, i, 1);
			until bSuccess or Times <= 0;
		end
	end
end

---@param InItemId int32
---@return FBattleItem_TabRes
function ItemTool.GetItemData(InItemId)
	if not UGCItemSystem.IsUGCItem(InItemId) then
		UGCLogSystem.Log("[ItemTool.GetItemName] 当前物品：%s 不是和平内置的物品，请检查", InItemId);
		return nil;
	end
	return UGCItemSystem.GetItemData(InItemId);
end

---@param InItemId int32
---@return string 物品名称
function ItemTool.GetItemName(InItemId)
	local ItemData = ItemTool.GetItemData(InItemId);
	if ItemData then return ItemData.ItemName; end
	return "";
end