1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
import base64
import email
import json
import logging
import os
import sys
from apiclient import errors
from pathlib import Path
from pytz import timezone
from send_email import get_gmail_service
from email.message import EmailMessage
from email.utils import parsedate_to_datetime
def ListMessagesWithLabels(service, user_id, label_ids=[]):
"""List all Messages of the user's mailbox with label_ids applied.
Args:
service: Authorized Gmail API service instance.
user_id: User's email address. The special value "me"
can be used to indicate the authenticated user.
label_ids: Only return Messages with these labelIds applied.
Returns:
List of Messages that have all required Labels applied. Note that the
returned list contains Message IDs, you must use get with the
appropriate id to get the details of a Message.
"""
try:
response = service.users().messages().list(userId=user_id,
labelIds=label_ids).execute()
if 'messages' in response:
yield from response['messages']
while 'nextPageToken' in response:
page_token = response['nextPageToken']
response = service.users().messages().list(userId=user_id,
labelIds=label_ids,
pageToken=page_token).execute()
yield from response['messages']
except errors.HttpError as error:
print(json.loads(error.content.decode('utf-8'))['error']['message'])
def ListHistory(service, user_id, label_id=None, start_history_id=10000):
"""List History of all changes to the user's mailbox.
Args:
service: Authorized Gmail API service instance.
user_id: User's email address. The special value "me"
can be used to indicate the authenticated user.
start_history_id: Only return Histories at or after start_history_id.
Returns:
A list of mailbox changes that occurred after the start_history_id.
"""
history = (service.users().history().list(userId=user_id,
startHistoryId=start_history_id,
historyTypes="messageAdded",
labelId=label_id)
.execute())
changes = history['history'] if 'history' in history else []
for change in changes:
if 'messagesAdded' in change:
for c in change['messagesAdded']:
yield c['message']
while 'nextPageToken' in history:
page_token = history['nextPageToken']
history = (service.users().history().list(userId=user_id,
startHistoryId=start_history_id,
pageToken=page_token).execute())
for change in history['history']:
if 'messagesAdded' in change:
for c in change['messagesAdded']:
yield c['message']
def labels_dict(service, user_id):
"""Returns a dictionary mapping labels to labelids.
Args:
service: Authorized Gmail API service instance.
user_id: User's email address. The special value "me"
Returns:
dictionary mapping labels to labelids.
"""
try:
response = service.users().labels().list(userId=user_id).execute()
labels = response['labels']
return {label['name']: label['id'] for label in labels}
except errors.HttpError as error:
print(json.loads(error.content.decode('utf-8'))['error']['message'])
class GmailMessage(EmailMessage):
_service = get_gmail_service()
_labels = labels_dict(_service, 'me')
def msgdict(self):
return {'raw': base64.urlsafe_b64encode(self.as_bytes()).decode()}
def send(self):
try:
message = (self._service.users().messages().
send(userId='me',body=self.msgdict())
.execute())
print('Message Id: %s' % message['id'])
except errors.HttpError as error:
print('An error occurred: %s' % error)
@staticmethod
def list_msg_ids(label, start_history_id=None):
if start_history_id is not None:
return ListHistory(GmailMessage._service,
'me',
label_id=GmailMessage._labels[label],
start_history_id=start_history_id)
else:
return ListMessagesWithLabels(GmailMessage._service,
'me',
label_ids=[GmailMessage._labels[label]])
@classmethod
def from_id(cls, msg_id, user_id='me'):
try:
message = (cls._service.users().messages().
get(userId=user_id, id=msg_id, format='raw').execute())
instance = email.message_from_bytes(
base64.urlsafe_b64decode(message['raw']),
policy=email.policy.EmailPolicy())
instance.history_id = message['historyId']
return instance
except errors.HttpError as error:
print(json.loads(error.content.decode('utf-8'))['error']['message'])
def save_emails(update=True):
"""Download new emails that were labeled swaptions."""
labelsdict = labels_dict(GmailMessage._service, 'me')
DATA_DIR = Path(os.getenv("DATA_DIR"))
if update:
try:
last_history_id = int((DATA_DIR / ".lastHistoryId").read_text())
except FileNotFoundError:
sys.exit()
existing_msgs = []
else:
p = DATA_DIR / "swaptions"
existing_msgs = set(str(x).split("_")[1] for x in p.iterdir() if x.is_file())
last_history_id = None
for msg in GmailMessage.list_msg_ids('swaptions', last_history_id):
if msg['id'] in existing_msgs:
continue
try:
message = GmailMessage.from_id(msg['id'])
logging.info(message.history_id)
subject = message['subject']
date = parsedate_to_datetime(message['date'])
if date.tzinfo is None:
date = date.replace(tzinfo=timezone('utc'))
date = date.astimezone(timezone('America/New_York'))
body = message.get_body('plain')
content = body.get_content()
except (KeyError, UnicodeDecodeError, AttributeError) as e:
logging.error("error decoding " + msg['id'])
continue
else:
email = (DATA_DIR / "swaptions" /
f"{date:%Y-%m-%d %H-%M-%S}_{msg['id']}")
with email.open("w") as fh:
fh.write(subject + "\r\n")
fh.write(content)
try:
new_history_id = message.history_id
(DATA_DIR / ".lastHistoryId").write_text(message.history_id)
except UnboundLocalError:
pass
if __name__ == '__main__':
try:
save_emails()
except errors.HttpError as e:
logging.error(e)
save_emails(update=False)
|
