local PlayerStatManager = {}
local DataStoreService = game:GetService('DataStoreService')
local playerData = DataStoreService:GetDataStore('PlayerData')
local AUTOSAVE_INTERVAL = 60
local DATASTORE_RETRIES = 3
local sessionData = {}
function PlayerStatManager:ChangeStat(player, statName, changeValue)
	sessionData[player][statName] = sessionData[player][statName] + changeValue
end
local function dataStoreRetry(dataStoreFunction)
	local tries = 0
	local success = true
	local data = nil
	repeat
		tries = tries + 1
		success = pcall(function() data = dataStoreFunction() end)
		if not success then wait(1) end
	until tries == DATASTORE_RETRIES or success
	if not success then
		error('Could not access DataStore! Warn players that their data might not get saved!')
	end
	return success, data
end
local function getPlayerData(player)
	return dataStoreRetry(function()
		return playerData:GetAsync(player.UserId)
	end)
end
local function savePlayerData(player)
	if sessionData[player] then
		return dataStoreRetry(function()
			return playerData:SetAsync(player.UserId, sessionData[player])
		end)
	end
end
local function setupPlayerData(player)
	local success, data = getPlayerData(player)
	if not success then

		sessionData[player] = false
	else
		if not data then

			sessionData[player] = {Money = 0, Experience = 0}
			savePlayerData(player)
		else

			sessionData[player] = data
		end
	end
end
local function autosave()
	while wait(AUTOSAVE_INTERVAL) do
		for player, data in pairs(sessionData) do
			savePlayerData(player)
		end
	end
end
game.Players.PlayerAdded:connect(setupPlayerData)
game.Players.PlayerRemoving:connect(function(player)
	savePlayerData(player)
	sessionData[player] = nil
end)


spawn(autosave)

return PlayerStatManager