230 lines
9.0 KiB
Python
230 lines
9.0 KiB
Python
import os
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import re
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import msal
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import requests
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import json
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from datetime import datetime
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from dateutil import parser
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from dateutil.tz import UTC
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from email.message import EmailMessage
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from email.utils import format_datetime
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import time
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import html2text
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# Filepath for caching timestamp
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cache_timestamp_file = 'cache_timestamp.json'
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# Load cached timestamp if it exists
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if os.path.exists(cache_timestamp_file):
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with open(cache_timestamp_file, 'r') as f:
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cache_timestamp = json.load(f)
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else:
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cache_timestamp = {}
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# Function to check if the cache is still valid
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def is_cache_valid():
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if 'timestamp' in cache_timestamp and 'max_age' in cache_timestamp:
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current_time = time.time()
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cache_expiry_time = cache_timestamp['timestamp'] + cache_timestamp['max_age']
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return current_time < cache_expiry_time
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return False
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# Function to create Maildir structure
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def create_maildir_structure(base_path):
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os.makedirs(os.path.join(base_path, 'cur'), exist_ok=True)
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os.makedirs(os.path.join(base_path, 'new'), exist_ok=True)
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os.makedirs(os.path.join(base_path, 'tmp'), exist_ok=True)
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# Function to save email to Maildir format with Markdown conversion
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def save_email_to_maildir(maildir_path, email_data):
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# Create a new EmailMessage object
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msg = EmailMessage()
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received_datetime = email_data.get('receivedDateTime', '')
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# Add required headers
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if received_datetime:
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# Parse the ISO 8601 datetime and convert it to RFC 5322 format
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parsed_datetime = parser.isoparse(received_datetime)
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msg['Date'] = format_datetime(parsed_datetime)
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else:
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msg['Date'] = '' # Leave empty if no receivedDateTime is available
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msg['Message-ID'] = email_data.get('id', '') # Use the unique ID of the message
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msg['Subject'] = email_data.get('subject', 'No Subject') # Default to 'No Subject' if missing
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msg['From'] = email_data.get('from', {}).get('emailAddress', {}).get('address', 'unknown@unknown.com')
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msg['To'] = ', '.join([recipient['emailAddress']['address'] for recipient in email_data.get('toRecipients', [])])
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# Convert the email body from HTML to Markdown
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body_html = email_data.get('body', {}).get('content', '')
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if email_data.get('body', {}).get('contentType', '').lower() == 'html':
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markdown_converter = html2text.HTML2Text()
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markdown_converter.ignore_images = True
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markdown_converter.ignore_links = False # Keep links in the Markdown output
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body_markdown = markdown_converter.handle(body_html)
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else:
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body_markdown = body_html # Use plain text if the body is not HTML
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# Add the converted Markdown body to the email
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msg.set_content(body_markdown)
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body_markdown = re.sub(r'\w+BannerStart.*?\w+BannerEnd', '', body_markdown, flags=re.DOTALL)
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# Save the email to the Maildir 'new' folder
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email_filename = f"{msg['Message-ID'] or email_data.get('id', 'unknown')}.eml"
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email_filepath = os.path.join(maildir_path, 'new', email_filename)
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with open(email_filepath, 'w') as f:
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f.write(msg.as_string())
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# Read Azure app credentials from environment variables
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client_id = os.getenv('AZURE_CLIENT_ID')
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tenant_id = os.getenv('AZURE_TENANT_ID')
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if not client_id or not tenant_id:
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raise ValueError("Please set the AZURE_CLIENT_ID and AZURE_TENANT_ID environment variables.")
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# Token cache
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cache = msal.SerializableTokenCache()
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cache_file = 'token_cache.bin'
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if os.path.exists(cache_file):
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cache.deserialize(open(cache_file, 'r').read())
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# Filepath for caching ETag
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etag_cache_file = 'etag_cache.json'
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# Load cached ETag if it exists
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if os.path.exists(etag_cache_file):
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with open(etag_cache_file, 'r') as f:
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etag_cache = json.load(f)
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else:
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etag_cache = {}
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# Authentication
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authority = f'https://login.microsoftonline.com/{tenant_id}'
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scopes = ['https://graph.microsoft.com/Calendars.Read', 'https://graph.microsoft.com/Mail.Read']
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app = msal.PublicClientApplication(client_id, authority=authority, token_cache=cache)
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accounts = app.get_accounts()
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if accounts:
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token_response = app.acquire_token_silent(scopes, account=accounts[0])
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else:
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flow = app.initiate_device_flow(scopes=scopes)
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if 'user_code' not in flow:
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raise Exception("Failed to create device flow")
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print(flow['message'])
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token_response = app.acquire_token_by_device_flow(flow)
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if 'access_token' not in token_response:
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raise Exception("Failed to acquire token")
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# Save token cache
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with open(cache_file, 'w') as f:
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f.write(cache.serialize())
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access_token = token_response['access_token']
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headers = {'Authorization': f'Bearer {access_token}'}
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accounts = app.get_accounts()
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if not accounts:
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raise Exception("No accounts found")
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mail_url = 'https://graph.microsoft.com/v1.0/me/mailFolders/inbox/messages?$top=100&$orderby=receivedDateTime asc'
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messages = []
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print("Fetching mail...")
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# Fetch the total count of messages in the inbox
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inbox_url = 'https://graph.microsoft.com/v1.0/me/mailFolders/inbox'
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response = requests.get(inbox_url, headers=headers)
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if response.status_code != 200:
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raise Exception(f"Failed to fetch inbox details: {response.status_code} {response.text}")
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total_messages = response.json().get('totalItemCount', 0)
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print(f"Total messages in inbox: {total_messages}")
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while mail_url:
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if is_cache_valid():
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print("Using cached messages...")
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break # No need to fetch further, cache is still valid
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response = requests.get(mail_url, headers=headers)
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if response.status_code != 200:
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raise Exception(f"Failed to fetch mail: {response.status_code} {response.text}")
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# Parse the Cache-Control header to get the max-age value
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cache_control = response.headers.get('Cache-Control', '')
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max_age = 0
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if 'max-age=' in cache_control:
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max_age = int(cache_control.split('max-age=')[1].split(',')[0])
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# Update the cache timestamp and max-age
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cache_timestamp['timestamp'] = time.time()
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cache_timestamp['max_age'] = max_age
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with open(cache_timestamp_file, 'w') as f:
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json.dump(cache_timestamp, f)
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# Process the response
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response_data = response.json()
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messages.extend(response_data.get('value', [])) # Add the current page of messages to the list
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# Calculate and display progress percentage
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progress = (len(messages) / total_messages) * 100 if total_messages > 0 else 0
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print(f"Fetched {len(messages)} of {total_messages} messages ({progress:.2f}%)", end='\r')
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# Get the next page URL from @odata.nextLink
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mail_url = response_data.get('@odata.nextLink')
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print("\nFinished fetching mail.")
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maildir_path = os.getenv('MAILDIR_PATH', os.path.expanduser('~/Mail')) + "/corteva/INBOX"
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create_maildir_structure(maildir_path)
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for message in messages:
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print(f"Processing message: {message.get('subject', 'No Subject')}", end='\r')
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save_email_to_maildir(maildir_path, message)
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print(f"\nFinished processing {len(messages)} messages.")
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# Fetch events with pagination and expand recurring events
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events_url = 'https://graph.microsoft.com/v1.0/me/events?$top=100&$expand=instances'
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events = []
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print("Fetching Calendar events...")
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while events_url:
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response = requests.get(events_url, headers=headers)
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response_data = response.json()
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events.extend(response_data.get('value', []))
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print(f"Fetched {len(events)} events so far...", end='\r')
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events_url = response_data.get('@odata.nextLink')
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# Save events to a file in iCalendar format
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output_file = f'output_ics/outlook_events_latest.ics'
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print(f"Saving events to {output_file}...")
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with open(output_file, 'w') as f:
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f.write("BEGIN:VCALENDAR\nVERSION:2.0\n")
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for event in events:
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if 'start' in event and 'end' in event:
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start = parser.isoparse(event['start']['dateTime'])
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end = parser.isoparse(event['end']['dateTime'])
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f.write(f"BEGIN:VEVENT\nSUMMARY:{event['subject']}\n")
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f.write(f"DTSTART:{start.strftime('%Y%m%dT%H%M%S')}\n")
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f.write(f"DTEND:{end.strftime('%Y%m%dT%H%M%S')}\n")
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if 'recurrence' in event and event['recurrence']: # Check if 'recurrence' exists and is not None
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for rule in event['recurrence']:
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if rule.startswith('RRULE'):
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rule_parts = rule.split(';')
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new_rule_parts = []
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for part in rule_parts:
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if part.startswith('UNTIL='):
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until_value = part.split('=')[1]
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until_date = parser.isoparse(until_value)
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if start.tzinfo is not None and until_date.tzinfo is None:
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until_date = until_date.replace(tzinfo=UTC)
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new_rule_parts.append(f"UNTIL={until_date.strftime('%Y%m%dT%H%M%SZ')}")
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else:
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new_rule_parts.append(part)
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rule = ';'.join(new_rule_parts)
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f.write(f"{rule}\n")
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f.write("END:VEVENT\n")
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f.write("END:VCALENDAR\n")
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