-- src/ServerScriptService/AntiCheatManager.server.lua

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

-- Rate limiting tracker
local rateLimits = {} -- [userId] = { [eventName] = { count, lastReset } }

local MAX_EVENTS_PER_SECOND = 10
local RATE_WINDOW = 1 -- seconds

local function getRateData(player, eventName)
	if not rateLimits[player.UserId] then
		rateLimits[player.UserId] = {}
	end
	if not rateLimits[player.UserId][eventName] then
		rateLimits[player.UserId][eventName] = {
			count = 0,
			lastReset = tick(),
		}
	end
	return rateLimits[player.UserId][eventName]
end

-- Check if a player is rate limited
_G.IsRateLimited = function(player, eventName)
	local data = getRateData(player, eventName)
	local now = tick()

	if now - data.lastReset > RATE_WINDOW then
		data.count = 0
		data.lastReset = now
	end

	data.count = data.count + 1

	if data.count > MAX_EVENTS_PER_SECOND then
		warn("Rate limit exceeded for " .. player.Name .. " on event " .. eventName)
		return true
	end

	return false
end

-- Validate distance between player and target
_G.ValidateDistance = function(player, targetPosition, maxDistance)
	local character = player.Character
	if not character then return false end

	local rootPart = character:FindFirstChild("HumanoidRootPart")
	if not rootPart then return false end

	local distance = (rootPart.Position - targetPosition).Magnitude
	return distance <= maxDistance
end

-- Validate player has enough cash
_G.ValidateCash = function(player, amount)
	local leaderstats = player:FindFirstChild("leaderstats")
	if not leaderstats then return false end

	local cash = leaderstats:FindFirstChild("Cash")
	if not cash then return false end

	return cash.Value >= amount
end

-- Cleanup on player leave
Players.PlayerRemoving:Connect(function(player)
	rateLimits[player.UserId] = nil
end)

print("Anti-Cheat Manager initialized")