local MemoryStoreService = game:GetService("MemoryStoreService")

local myMap = MemoryStoreService:GetSortedMap("MySortedMap")

function printAllKeys(map)
	-- 初始下限为 nil，这意味着从第一个项目开始
	local exclusiveLowerBound = nil

	-- 这个循环一直持续到地图的末尾
	while true do
		-- 从当前下限开始获取最多一百个项目
		local items = map:GetRangeAsync(Enum.SortDirection.Ascending, 100, exclusiveLowerBound)

		for _, item in ipairs(items) do
			print(item.key)
			print(item.sortKey)
		end

		-- 如果返回的项目少于一百个，则表示我们已经到达地图的末尾
		if #items < 100 then
			break
		end

		-- 最后检索到的键是下一次迭代的排他性下限
		exclusiveLowerBound = {}
		exclusiveLowerBound["key"] = items[#items].key
		exclusiveLowerBound["sortKey"] = items[#items].sortKey
	end
end

printAllKeys(myMap)

local MemoryStoreService = game:GetService("MemoryStoreService")
local map = MemoryStoreService:GetSortedMap("Leaderboard")
local Players = game:GetService("Players")

function updateLeaderboard(itemKey, killsToAdd, deathsToAdd)
	local success, newStats, newScore = pcall(function()
		return map:UpdateAsync(itemKey, function(playerStats, playerScore)
			playerStats = playerStats or { kills = 0, deaths = 0 }
			playerStats.kills += killsToAdd
			playerStats.deaths += deathsToAdd
			if playerStats then
				-- `playerScore` 是用于对地图中的项进行排序的 sortKey
				playerScore = playerStats.kills / math.max(playerStats.deaths, 1)
				return playerStats, playerScore
			end
			return nil
		end, 30)
	end)
end

-- 为所有玩家增加一次击杀
for i, player in pairs(Players:GetPlayers()) do
	updateLeaderboard(player.UserId, 1, 0)
end
-- 为 userId 为 12345 的玩家增加 5 次击杀和 1 次死亡
updateLeaderboard(12345, 5, 1)