OctoprintReservations/google_calendar.py

80 lines
2.7 KiB
Python

from datetime import datetime
import os.path
from base64 import b32hexencode
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build, Resource
from googleapiclient.errors import HttpError
# If modifying these scopes, delete the file token.json.
SCOPES = [
"https://www.googleapis.com/auth/calendar.readonly",
"https://www.googleapis.com/auth/calendar.events",
]
CALENDAR_ID = "40e4v6t1s2spr9f1d9d45br3ik@group.calendar.google.com"
class CalendarService:
service: Resource
def __init__(self):
creds = self._authenticate()
self.service = build("calendar", "v3", credentials=creds)
def _authenticate(self) -> Credentials:
creds = None
# The file token.json stores the user's access and refresh tokens, and is
# created automatically when the authorization flow completes for the first
# time.
if os.path.exists("token.json"):
creds = Credentials.from_authorized_user_file("token.json", SCOPES)
# If there are no (valid) credentials available, let the user log in.
if not creds or not creds.valid:
if creds and creds.expired and creds.refresh_token:
creds.refresh(Request())
else:
flow = InstalledAppFlow.from_client_secrets_file(
"credentials.json", SCOPES
)
creds = flow.run_local_server(port=0)
# Save the credentials for the next run
with open("token.json", "w") as token:
token.write(creds.to_json())
return creds
def insert_or_update_event(
self, id: str, title: str, start: datetime, end: datetime
):
event_id = b32hexencode(id.encode("ascii")).decode("ascii").lower().rstrip("=")
event = {
"id": event_id,
"summary": title,
"start": {
"dateTime": start.isoformat() + "Z", # 'Z' indicates UTC time
},
"end": {
"dateTime": end.isoformat() + "Z", # 'Z' indicates UTC time
},
}
print(f"Adding/updating event: {title}, start: {start}, end: {end}")
try:
self.service.events().update(
calendarId=CALENDAR_ID, eventId=event_id, body=event
).execute()
except HttpError as error:
# Create event if it doesn't exist
if error.status_code == 404:
self.service.events().insert(
calendarId=CALENDAR_ID, body=event
).execute()
else:
raise