local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local Player = Players.LocalPlayer

local PROXY_URL = "https://lootlabs-auth.nguyenvantoan-info.workers.dev"
local SCRIPT_ID = "attack"
local FILE_NAME = "Key_" .. SCRIPT_ID .. ".txt"

local requestFunc = (syn and syn.request) or (http and http.request) or http_request or request
local writeFunc = writefile or (syn and syn.writefile)
local readFunc = readfile or (syn and syn.readfile)
local isfileFunc = isfile or (syn and syn.isfile)

local function FetchUrl(targetUrl)
    if requestFunc then
        local res = requestFunc({ Url = targetUrl, Method = "GET" })
        return res.Body
    else
        return game:HttpGet(targetUrl)
    end
end

local function SaveKey(key)
    pcall(function()
        if writeFunc then
            writeFunc(FILE_NAME, tostring(key))
        end
        if getgenv then
            getgenv()["SAVED_KEY_" .. SCRIPT_ID] = tostring(key)
        end
    end)
end

local function GetSavedKey()
    if getgenv and getgenv()["SAVED_KEY_" .. SCRIPT_ID] then
        return tostring(getgenv()["SAVED_KEY_" .. SCRIPT_ID]):gsub("%s+", "")
    end
    local hasFile = false
    if isfileFunc then
        pcall(function() hasFile = isfileFunc(FILE_NAME) end)
    else
        hasFile = true
    end

    if hasFile and readFunc then
        local success, content = pcall(function()
            return readFunc(FILE_NAME)
        end)
        if success and type(content) == "string" and content ~= "" then
            return content:gsub("%s+", "")
        end
    end
    return nil
end

local function TryVerifyAndRun(key)
    if not key or key == "" then return false end
    local targetUrl = PROXY_URL .. "/get-script?script=" .. SCRIPT_ID .. "&key=" .. key
    local success, response = pcall(function()
        return FetchUrl(targetUrl)
    end)

    if success and response and not response:find("^%-%-") then
        local runScript, err = loadstring(response)
        if runScript then
            SaveKey(key)
            task.spawn(runScript)
            return true
        end
    end
    return false
end

-- ⚡ 1. KIỂM TRA AUTO-LOGIN
local savedKey = GetSavedKey()
if savedKey then
    if TryVerifyAndRun(savedKey) then
        return
    end
end

-- ⚡ 2. COPY ĐƯỜNG DẪN /start
local gatewayUrl = "https://lootlabs-auth.nguyenvantoan-info.workers.dev/start?script=" .. SCRIPT_ID
if setclipboard then
    setclipboard(gatewayUrl)
end

-- ⚡ 3. GIAO DIỆN NHẬP KEY (GUI)
local ScreenGui = Instance.new("ScreenGui")
ScreenGui.Name = "KeySystem_" .. SCRIPT_ID
ScreenGui.ResetOnSpawn = false
ScreenGui.Parent = (gethui and gethui()) or Player:WaitForChild("PlayerGui")

local Frame = Instance.new("Frame")
Frame.Size = UDim2.new(0, 320, 0, 190)
Frame.Position = UDim2.new(0.5, -160, 0.5, -95)
Frame.BackgroundColor3 = Color3.fromRGB(24, 24, 32)
Frame.BorderSizePixel = 0
Frame.Active = true
Frame.Draggable = true
Frame.Parent = ScreenGui
Instance.new("UICorner", Frame).CornerRadius = UDim.new(0, 8)

-- Nút Close (✕)
local CloseBtn = Instance.new("TextButton")
CloseBtn.Size = UDim2.new(0, 24, 0, 24)
CloseBtn.Position = UDim2.new(1, -30, 0, 6)
CloseBtn.BackgroundColor3 = Color3.fromRGB(220, 50, 50)
CloseBtn.Text = "✕"
CloseBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
CloseBtn.Font = Enum.Font.GothamBold
CloseBtn.TextSize = 12
CloseBtn.Parent = Frame
Instance.new("UICorner", CloseBtn).CornerRadius = UDim.new(0, 6)

CloseBtn.MouseButton1Click:Connect(function()
    ScreenGui:Destroy()
end)

local Title = Instance.new("TextLabel")
Title.Size = UDim2.new(1, -40, 0, 35)
Title.Position = UDim2.new(0, 10, 0, 0)
Title.BackgroundTransparency = 1
Title.Text = "🔑 Auto Farm (8H Key)"
Title.TextColor3 = Color3.fromRGB(255, 255, 255)
Title.Font = Enum.Font.GothamBold
Title.TextSize = 14
Title.TextXAlignment = Enum.TextXAlignment.Center
Title.Parent = Frame

local Note = Instance.new("TextLabel")
Note.Size = UDim2.new(1, -20, 0, 25)
Note.Position = UDim2.new(0, 10, 0, 35)
Note.BackgroundTransparency = 1
Note.Text = "(Key link automatically copied to clipboard)"
Note.TextColor3 = Color3.fromRGB(160, 160, 180)
Note.Font = Enum.Font.Gotham
Note.TextSize = 11
Note.Parent = Frame

local TextBox = Instance.new("TextBox")
TextBox.Size = UDim2.new(1, -20, 0, 36)
TextBox.Position = UDim2.new(0, 10, 0, 68)
TextBox.BackgroundColor3 = Color3.fromRGB(36, 36, 48)
TextBox.PlaceholderText = "Paste Key here..."
TextBox.Text = ""
TextBox.TextColor3 = Color3.fromRGB(255, 255, 255)
TextBox.Font = Enum.Font.Gotham
TextBox.TextSize = 13
TextBox.Parent = Frame
Instance.new("UICorner", TextBox).CornerRadius = UDim.new(0, 6)

local SubmitBtn = Instance.new("TextButton")
SubmitBtn.Size = UDim2.new(0.5, -15, 0, 34)
SubmitBtn.Position = UDim2.new(0, 10, 0, 115)
SubmitBtn.BackgroundColor3 = Color3.fromRGB(40, 140, 70)
SubmitBtn.Text = "Submit"
SubmitBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
SubmitBtn.Font = Enum.Font.GothamBold
SubmitBtn.TextSize = 13
SubmitBtn.Parent = Frame
Instance.new("UICorner", SubmitBtn).CornerRadius = UDim.new(0, 6)

local CopyLinkBtn = Instance.new("TextButton")
CopyLinkBtn.Size = UDim2.new(0.5, -15, 0, 34)
CopyLinkBtn.Position = UDim2.new(0.5, 5, 0, 115)
CopyLinkBtn.BackgroundColor3 = Color3.fromRGB(60, 110, 220)
CopyLinkBtn.Text = "Copy Link"
CopyLinkBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
CopyLinkBtn.Font = Enum.Font.GothamBold
CopyLinkBtn.TextSize = 13
CopyLinkBtn.Parent = Frame
Instance.new("UICorner", CopyLinkBtn).CornerRadius = UDim.new(0, 6)

local Status = Instance.new("TextLabel")
Status.Size = UDim2.new(1, -20, 0, 25)
Status.Position = UDim2.new(0, 10, 0, 155)
Status.BackgroundTransparency = 1
Status.Text = ""
Status.TextColor3 = Color3.fromRGB(255, 100, 100)
Status.Font = Enum.Font.Gotham
Status.TextSize = 12
Status.Parent = Frame

CopyLinkBtn.MouseButton1Click:Connect(function()
    if setclipboard then
        setclipboard(gatewayUrl)
        Status.TextColor3 = Color3.fromRGB(100, 255, 100)
        Status.Text = "Link copied to clipboard!"
    end
end)

SubmitBtn.MouseButton1Click:Connect(function()
    local userKey = TextBox.Text:gsub("%s+", "")
    if userKey == "" then
        Status.TextColor3 = Color3.fromRGB(255, 100, 100)
        Status.Text = "Please enter your key!"
        return
    end

    Status.TextColor3 = Color3.fromRGB(200, 200, 200)
    Status.Text = "Verifying key..."

    if TryVerifyAndRun(userKey) then
        Status.TextColor3 = Color3.fromRGB(100, 255, 100)
        Status.Text = "Success! Loading menu..."
        task.wait(0.2)
        ScreenGui:Destroy()
    else
        Status.TextColor3 = Color3.fromRGB(255, 100, 100)
        Status.Text = "Invalid key for " .. "Auto Farm" .. "!"
    end
end)