Authorization issue with cron crawler inserting data into Google spreadsheet using Google API in Ruby

Question

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.

Answer 1

Solved thanks to Ruby google_drive gem oAuth2 saving

I needed to get a refresh token and make my code use it like below.

CLIENT_ID = '!!!'
CLIENT_SECRET = '!!!'
OAUTH_SCOPE = 'https://www.googleapis.com/auth/drive'
REDIRECT_URI = 'urn:ietf:wg:oauth:2.0:oob'
REFRESH_TOKEN = '!!!'

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
client.authorization.refresh_token = REFRESH_TOKEN
client.authorization.refresh! 

access_token = client.authorization.access_token
session = GoogleDrive.login_with_oauth(access_token)