-- 背包模块
Bag = {}



----* 解锁背包格子
function closedbagitemclick(actor)
	local count = GetBagMaxCount(actor)
	if count < 126 then
		Func.messagebox(actor, "解锁背包格子需要:#251|千年玄石x1#215|\\是否确认解锁?#249", "@diysetbagcount", "@exit", 16)
	end
end

function diysetbagcount(actor)
	local count = GetBagMaxCount(actor)
	if count < 126 then
		if takeitem(actor, "千年玄石", 1) then
			setbagcount(actor, count + 1)
		else
			Func.sendmsg9(actor, "[提示]:#70|千年玄石#215|不足#251|1颗,#215|解锁失败!")
		end
	end
end


---* 解锁仓库格子
function Bag.changestorage(actor)
	local count = getssize(actor)
	if count < 240 then
		Func.messagebox(actor, "解锁仓库格子需要:#251|千年玄石x1#215|\\是否确认解锁?#249", "@diysetstoragecount", "@exit", 16)
	end
end


function diysetstoragecount(actor)
	local count = getssize(actor)
	if count < 240 then
		if takeitem(actor, "千年玄石", 1) then
			changestorage(actor, 1)
			openstorage(actor)
			openstorage(actor)
		else
			Func.sendmsg9(actor, "[提示]:#70|千年玄石#215|不足#251|1颗,#215|解锁失败!")
		end
	end
end




-- 获取物品数量
---@param actor userdata 角色对象
---@param idx number 物品索引
---@return number 物品数量
function Bag.getItemNumByIdx(actor, idx)
	local count = 0
	local item_num = getbaseinfo(actor, ConstCfg.gbase.bag_num)
	for i = 0, item_num - 1 do
		local itemobj = getiteminfobyindex(actor, i)
		local itemidx = getiteminfo(actor, itemobj, ConstCfg.iteminfo.idx)
		if itemidx == idx then
			local item_mun = getiteminfo(actor, itemobj, ConstCfg.iteminfo.overlap)
			if item_mun == 0 then
				item_mun = 1
			end
			count = count + item_mun
		end
	end

	return count
end

-- 检查物品数量
---@param actor userdata 角色对象
---@param idx number 物品索引
---@param num number 物品数量（可选，默认为1）
---@return boolean 是否拥有足够数量的物品
function Bag.checkItemNumByIdx(actor, idx, num)
	num = num or 1
	local count = Bag.getItemNumByIdx(actor, idx)
	return count >= num
end

-- 获取背包空格数量
---@param actor userdata 角色对象
---@return number 背包空格数量
function Bag.getBagEmptyNum(actor)
	local item_num = getbaseinfo(actor, ConstCfg.gbase.bag_num)
	return ConstCfg.bagcellnum - item_num
end

-- 检查背包空格数量
---@param actor userdata 角色对象
---@param num number 所需空格数量
---@return boolean 是否拥有足够数量的空格
function Bag.checkBagEmptyNum(actor, num)
	local empty_num = Bag.getBagEmptyNum(actor)
	return empty_num >= num
end

-- 检查背包是否足够给予物品 items
---@param actor userdata 角色对象
---@param items table 物品列表，每个元素包含物品索引和数量
---@return boolean 是否拥有足够数量的空格
function Bag.checkBagEmptyItems(actor, items)
	local bagEmptyNum = Bag.getBagEmptyNum(actor)
	local needEmptyNum = 0
	for _, item in ipairs(items) do
		local idx, num = item[1], item[2]
		if not Item.isCurrency(idx) then --物品 装备
			needEmptyNum = needEmptyNum + 1
		end
	end
	return bagEmptyNum >= needEmptyNum
end

-- 获取背包中某件物品对象
---@param actor userdata 角色对象
---@param idx number 物品索引
---@return userdata 物品对象
function Bag.getItemObjByIdx(actor, idx)
	local item_num = getbaseinfo(actor, ConstCfg.gbase.bag_num)
	for i = 0, item_num - 1 do
		local itemobj = getiteminfobyindex(actor, i)
		local itemidx = getiteminfo(actor, itemobj, ConstCfg.iteminfo.idx)
		if itemidx == idx then
			return itemobj
		end
	end
end

-- 获取背包中某件物品唯一id
---@param actor userdata 角色对象
---@param idx number 物品索引
---@return number 物品唯一id
function Bag.getItemMakeIdByIdx(actor, idx)
	local itemobj = Bag.getItemObjByIdx(actor, idx)
	if not itemobj then return end
	return getiteminfo(actor, itemobj, ConstCfg.iteminfo.id)
end

-- 检查背包是否有某件物品的数量通过唯一id
---@param actor userdata 角色对象
---@param makeindex number 物品唯一id
---@param num number 物品数量（可选，默认为1）
---@return boolean 是否拥有足够数量的物品
function Bag.checkItemNumByMakeIndex(actor, makeindex, num)
	num = num or 1

	local item_num = getbaseinfo(actor, ConstCfg.gbase.bag_num)
	for i = 0, item_num - 1 do
		local itemobj = getiteminfobyindex(actor, i)
		local itemmakeid = getiteminfo(actor, itemobj, ConstCfg.iteminfo.id)
		if itemmakeid == makeindex then
			if num > 1 then
				local overlap = getiteminfo(actor, itemobj, ConstCfg.iteminfo.overlap)
				if overlap < num then return false end
			end
			return true
		end
	end

	return false
end

-- 获取背包中某件物品对象通过唯一ID
---@param actor userdata 角色对象
---@param makeindex number 物品唯一id
---@return userdata 物品对象
function Bag.getItemObjByMakeIndex(actor, makeindex)
	local item_num = getbaseinfo(actor, ConstCfg.gbase.bag_num)
	for i = 0, item_num - 1 do
		local itemobj = getiteminfobyindex(actor, i)
		local itemmakeindex = getiteminfo(actor, itemobj, ConstCfg.iteminfo.id)
		if itemmakeindex == makeindex then
			return itemobj
		end
	end
end

return Bag