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-- Set up table to return to any script that requires this module script
local CarStatManager = {}

local DataStoreService = game:GetService("DataStoreService")
local carData = DataStoreService:GetDataStore("carData")

-- Table to hold player information for the current session
local sessionData = {}



-- Function that other scripts can call to change a player's stats
function CarStatManager:ChangeStat(player, statName, value)
    local playerUserId = "Player_" .. player.UserId
    assert(typeof(sessionData[playerUserId][statName]) == typeof(value), "ChangeStat error: types do not match")
    if typeof(sessionData[playerUserId][statName]) == "number" then
        sessionData[playerUserId][statName] = sessionData[playerUserId][statName] + value
    else
        sessionData[playerUserId][statName] = value
    end
end

function CarStatManager:GetStat(player)
--  local success, currentExperience = pcall(function()
--      return carData:GetAsync("Player_"..player.UserId)
--  end)
    return sessionData[player.UserId]["Owned"]
end

-- Function to add player to the 'sessionData' table
local function setupPlayerData(player)
    local playerUserId = "Player_" .. player.UserId
    local success, data = pcall(function()
        return carData:GetAsync(playerUserId)
    end)
    if success then
        if data then
            warn(player.Name.." Is in car database.")
            warn("Fetching data for player: "..player.Name)
            -- Data exists for this player
            sessionData[playerUserId] = data
        else
            warn(player.Name.." Haven't played before")
            warn("Setting Default Values for Player: "..player.Name)
            -- Data store is working, but no current data for this player
            sessionData[playerUserId] = {
                ["Owned"] = {}
            }
        end
    else
        warn("Error: Couldn't fetch Car Data")
    end
end

-- Function to save player's data
local function saveCarData(playerUserId)
    if sessionData[playerUserId] then
        carData:SetAsync(playerUserId, sessionData[playerUserId])
    end
end

-- Function to save player data on exit
local function saveOnExit(player)
    local playerUserId = "Player_" .. player.UserId
    saveCarData(playerUserId)
end

-- Connect 'setupPlayerData()' function to 'PlayerAdded' event
game.Players.PlayerAdded:Connect(setupPlayerData)

-- Connect 'saveOnExit()' function to 'PlayerRemoving' event
game.Players.PlayerRemoving:Connect(saveOnExit)

return CarStatManager