Update script.py

Updated authentication code to a more redundant format.

Author: vishnu-v-vardhan

Google-Meet-Scheduler/script.py

@@ -1,26 +1,30 @@
 from googleapiclient.discovery import build
 from uuid import uuid4
 from google.auth.transport.requests import Request
-from pathlib import Path
 from google_auth_oauthlib.flow import InstalledAppFlow
 from typing import Dict, List
-from pickle import load, dump
+import os
+from google.oauth2.credentials import Credentials
+
+SCOPES = ["https://www.googleapis.com/auth/calendar"]
 
 
 class CreateMeet:
-    def __init__(self, attendees: Dict[str, str], event_time: Dict[str, str], topic):
+    def __init__(self, attendees: Dict[str, str],
+                 event_time: Dict[str, str], topic):
         authe = self._auth()
-        attendees = [{"email": e} for e in attendees.values()]
+        attendees_list = [{"email": e} for e in attendees.values()]
         self.event_states = self._create_event(
-            attendees, event_time, authe, topic)
+            attendees_list, event_time, authe, topic)
 
     @staticmethod
-    def _create_event(attendees: List[Dict[str, str]], event_time, authe: build, topic):
+    def _create_event(
+            attendees: List[Dict[str, str]], event_time, authe: build, Topic):
         event = {"conferenceData": {"createRequest": {"requestId": f"{uuid4().hex}", "conferenceSolutionKey": {"type": "hangoutsMeet"}}},
                  "attendees": attendees,
                  "start": {"dateTime": event_time["start"], 'timeZone': 'Asia/Kolkata'},
                  "end": {"dateTime": event_time["end"], 'timeZone': 'Asia/Kolkata'},
-                 "summary": topic,
+                 "summary": Topic,
                  "reminders": {"useDefault": True}
                  }
         event = authe.events().insert(calendarId="primary", sendNotifications=True,
@@ -29,23 +33,24 @@ def _create_event(attendees: List[Dict[str, str]], event_time, authe: build, top
 
     @staticmethod
     def _auth():
-        token_file, scopes = Path(
-            "./token.pickle"), ["https://www.googleapis.com/auth/calendar"]
-        credentials = None
-        if token_file.exists():
-            with open(token_file, "rb") as token:
-                credentials = load(token)
-        if not credentials or not credentials.valid:
-            if credentials and credentials.expired and credentials.refresh_token:
-                credentials.refresh(Request())
+        creds = None
+        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)
-                credentials = flow.run_local_server(port=0)
-            with open(token_file, "wb") as token:
-                dump(credentials, token)
-        calendar_service = build("calendar", "v3", credentials=credentials)
-        return calendar_service
+                    "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())
+
+        service = build("calendar", "v3", credentials=creds)
+        return service
 
 
 print('------------------------------')
@@ -60,9 +65,10 @@ def _auth():
 emails = list(
     input('Enter the emails of guests separated by 1 space each : ').strip().split())
 topic = input('Enter the topic of the meeting : ')
+
 time = {
-    'start': date+'T'+start+':00.000000',
-    'end': date+'T'+end+':00.000000'
+    'start': date + 'T' + start + ':00.000000',
+    'end': date + 'T' + end + ':00.000000'
 }
 guests = {email: email for email in emails}
 meet = CreateMeet(guests, time, topic)
@@ -72,4 +78,4 @@ def _auth():
 print('-- Meeting Details --')
 print('---------------------')
 for key in keys:
-    print(key+' : ', details[key])
+    print(key + ' : ', details[key])