calibre-web/cps/services/gmail.py
Ozzie Isaacs 97e4707f72 user list column value and tags editor (#1938)
Bugfixes for massedit in user list (#1938)
Changed no. of debug messages
2021-04-25 10:43:01 +02:00

84 lines
3.2 KiB
Python

from __future__ import print_function
import os.path
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request
from googleapiclient.discovery import build
from google.oauth2.credentials import Credentials
from datetime import datetime
import base64
from flask_babel import gettext as _
from ..constants import BASE_DIR
from .. import logger
log = logger.create()
SCOPES = ['openid', 'https://www.googleapis.com/auth/gmail.send', 'https://www.googleapis.com/auth/userinfo.email']
def setup_gmail(token):
# If there are no (valid) credentials available, let the user log in.
creds = None
if "token" in token:
creds = Credentials(
token=token['token'],
refresh_token=token['refresh_token'],
token_uri=token['token_uri'],
client_id=token['client_id'],
client_secret=token['client_secret'],
scopes=token['scopes'],
)
creds.expiry = datetime.fromisoformat(token['expiry'])
if not creds or not creds.valid:
# don't forget to dump one more time after the refresh
# also, some file-locking routines wouldn't be needless
if creds and creds.expired and creds.refresh_token:
creds.refresh(Request())
else:
cred_file = os.path.join(BASE_DIR, 'gmail.json')
if not os.path.exists(cred_file):
raise Exception(_("Found no valid gmail.json file with OAuth information"))
flow = InstalledAppFlow.from_client_secrets_file(
os.path.join(BASE_DIR, 'gmail.json'), SCOPES)
creds = flow.run_local_server(port=0)
user_info = get_user_info(creds)
return {
'token': creds.token,
'refresh_token': creds.refresh_token,
'token_uri': creds.token_uri,
'client_id': creds.client_id,
'client_secret': creds.client_secret,
'scopes': creds.scopes,
'expiry': creds.expiry.isoformat(),
'email': user_info
}
return {}
def get_user_info(credentials):
user_info_service = build(serviceName='oauth2', version='v2',credentials=credentials)
user_info = user_info_service.userinfo().get().execute()
return user_info.get('email', "")
def send_messsage(token, msg):
log.debug("Start sending email via Gmail")
creds = Credentials(
token=token['token'],
refresh_token=token['refresh_token'],
token_uri=token['token_uri'],
client_id=token['client_id'],
client_secret=token['client_secret'],
scopes=token['scopes'],
)
creds.expiry = datetime.fromisoformat(token['expiry'])
if creds and creds.expired and creds.refresh_token:
creds.refresh(Request())
service = build('gmail', 'v1', credentials=creds)
message_as_bytes = msg.as_bytes() # the message should converted from string to bytes.
message_as_base64 = base64.urlsafe_b64encode(message_as_bytes) # encode in base64 (printable letters coding)
raw = message_as_base64.decode() # convert to something JSON serializable
body = {'raw': raw}
(service.users().messages().send(userId='me', body=body).execute())
log.debug("Email send successfully via Gmail")