My project is to crawl the certain web data and put them into my Google spreadsheet every morning 9:00. And it has to get the authorization to read & write something. That's why the code below is located at the top.

# Google API
CLIENT_ID = blah blah
CLIENT_SECRET = blah blah
OAUTH_SCOPE = blah blah
REDIRECT_URI = blah blah

# Authorization_code
def get_authorization_code 
    client = Google::APIClient.new
    client.authorization.client_id = CLIENT_ID
    client.authorization.client_secret = CLIENT_SECRET
    client.authorization.scope = OAUTH_SCOPE
    client.authorization.redirect_uri = REDIRECT_URI

    uri = client.authorization.authorization_uri
    Launchy.open(uri)

    # Exchange authorization code for access token
    $stdout.write  "Enter authorization code: "
    client.authorization.code = gets.chomp
    client.authorization.fetch_access_token!
    client.authorization
end

authorization_code = get_authorization_code
access_token  = authorization_code.access_token
session = GoogleDrive.login_with_oauth(access_token)

But with this in the code, even though I set up the cron job, I probably have to wake up in the morning and Enter authorization code to get it done. But I don't want to.

Please tell me how I can solve this problem.