Favourite Server

local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local DataStoreService = game:GetService("DataStoreService")
local RunService = game:GetService("RunService")

local DataStore = DataStoreService:GetDataStore("MyDataStore1-")

local Remotes = ReplicatedStorage.Remotes

local PlayerData = {}

local function PlayerAdded(Player: Player)
    local Leaderstats = Instance.new("Folder", Player)
    Leaderstats.Name = "leaderstats"

    local Gems = Instance.new("NumberValue", Leaderstats)
    Gems.Name = "Gems"
    Gems.Value = 0

    local UserId = Player.UserId
    local Key = "Player_"..UserId

    local Success, SavedData = pcall(function()
        return DataStore:GetAsync(Key)
    end)

    if Success then
        PlayerData[UserId] = {
            HasFavourited = SavedData == true
        }
    else
        warn("Failed To Load Data For Player")
        PlayerData[UserId] = {
            HasFavourited = false
        }
    end
end

local function PlayerRemoving(Player: Player)
    local UserId = Player.UserId
    local Key = "Player_"..UserId
    local SavedData = PlayerData[UserId]

    if SavedData then
        pcall(function()
            DataStore:SetAsync(Key, SavedData.HasFavourited)
        end)
    end

    PlayerData[UserId] = nil
end

local function BindToClose()
    for _, Player in Players:GetPlayers() do
        PlayerRemoving(Player)
    end
end

local function OnRemote(Player: Player)
    local UserId = Player.UserId
    local SavedData = PlayerData[UserId]

    if not SavedData or SavedData.HasFavourited then
        print("Already Claimed!")
        return
    end

    local Gems = Player:FindFirstChild("leaderstats") and Player.leaderstats:FindFirstChild("Gems")
    if Gems then
        Gems.Value += 10_000
        SavedData.HasFavourited = true
        print("Recieved Reward!")
    end
end

Players.PlayerAdded:Connect(PlayerAdded)
Players.PlayerRemoving:Connect(PlayerRemoving)
game:BindToClose(BindToClose)
Remotes.GameFavourited.OnServerEvent:Connect(OnRemote)