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1#
2# Copyright (C) 2015 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the 'License');
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an 'AS IS' BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16import base64
17import httplib2
18
19import config
20
21
22def get_body(msg):
23    if 'attachmentId' in msg['payload']['body']:
24        raise NotImplementedError('Handling of messages contained in '
25                                  'attachments not yet implemented.')
26    b64_body = msg['payload']['body']['data']
27    return base64.urlsafe_b64decode(b64_body.encode('ASCII'))
28
29
30def build_service():
31    from apiclient.discovery import build
32    from oauth2client.client import flow_from_clientsecrets
33    from oauth2client.file import Storage
34    from oauth2client.tools import run
35
36    OAUTH_SCOPE = 'https://www.googleapis.com/auth/gmail.modify'
37    STORAGE = Storage('oauth.storage')
38
39    # Start the OAuth flow to retrieve credentials
40    flow = flow_from_clientsecrets(config.client_secret_file,
41                                   scope=OAUTH_SCOPE)
42    http = httplib2.Http()
43
44    # Try to retrieve credentials from storage or run the flow to generate them
45    credentials = STORAGE.get()
46    if credentials is None or credentials.invalid:
47        credentials = run(flow, STORAGE, http=http)
48
49    http = credentials.authorize(http)
50    return build('gmail', 'v1', http=http)
51
52
53def get_gerrit_label(labels):
54    for label in labels:
55        if label['name'] == 'gerrit':
56            return label['id']
57    return None
58
59
60def get_all_messages(service, label):
61    msgs = []
62    response = service.users().messages().list(
63        userId='me', labelIds=label).execute()
64    if 'messages' in response:
65        msgs.extend(response['messages'])
66    while 'nextPageToken' in response:
67        page_token = response['nextPageToken']
68        response = service.users().messages().list(
69            userId='me', pageToken=page_token).execute()
70        msgs.extend(response['messages'])
71    return msgs
72