--// Configuration Variables
local KeySettings = {
    Title = "Rodan Hub",
    Subtitle = "Key System",
    Note = "Get Key By Joining Discord or Clicking Link",
    FileName = "RodanHubKey_" .. game.Players.LocalPlayer.Name,
    KeyURL = "https://[Log in to view URL]", -- Replace with Linkvertise/Discord or a site with keys
    ExpireDays = 3, -- Number of days before the key expires
    VerificationLink = "https://[Log in to view URL]", -- Verification link
    KeyURL = ""
}

--// Function to Save Key Locally
local function saveKey(key)
    if writefile then
        writefile(KeySettings.FileName, key .. "|" .. os.time())
    end
end

--// Function to Load Key from Local Storage
local function loadKey()
    if isfile and isfile(KeySettings.FileName) then
        local keyData = readfile(KeySettings.FileName)
        local key, timestamp = unpack(string.split(keyData, "|"))
        if os.time() - tonumber(timestamp) < KeySettings.ExpireDays * 86400 then
            return key -- Return the key if it's still valid
        end
    end
    return nil -- Return nil if the key is not valid
end

--// Function to Prompt User for Key
local function promptForKey()
    local key = nil
    while not key do
        key = game:GetService("Players").LocalPlayer:PromptInput("Enter your key to access Rodan Hub:", "Enter Key")
        if key and verifyKey(key) then
            saveKey(key)
            return key
        else
            game:GetService("Players").LocalPlayer:PromptInput("Invalid or expired key. Please verify at:\n\n" .. KeySettings.VerificationLink, "Copy Link", KeySettings.VerificationLink)
        end
    end
    return nil
end

--// Function to Verify the Key with Local or Online Check
local function verifyKey(key)
    -- Check if the key is valid locally (if you want local verification)
    if isfile and isfile(KeySettings.FileName) then
        local savedKey, timestamp = unpack(string.split(readfile(KeySettings.FileName), "|"))
        if key == savedKey then
            return true -- Key matches the saved one
        end
    end
    
    -- If no local key or mismatch, make an HTTP request to verify key remotely
    local success, response = pcall(function()
        return game:HttpPost("https://[Log in to view URL]", game:GetService("HttpService"):JSONEncode({ key = key }), Enum.HttpContentType.ApplicationJson)
    end)

    if success then
        local responseData = game:GetService("HttpService"):JSONDecode(response)
        return responseData.success -- Return true if the server confirms the key is valid
    else
        warn("Failed to verify key online.")
    end
    
    return false
end

--// Main Key System
local function main()
    local key = loadKey()
    if not key then
        -- Prompt the user to enter their key
        key = promptForKey()
    end

    if key then
        print("Access Granted! Key: " .. key)
        -- Load your main game hub here
        -- Example: RodanHub:Load()
    else
        error("Failed to obtain a valid key.")
    end
end

--// Run the Key System
main()