api: Exclude None values from request payload in Endpoint class.

Refactored the Endpoint class to exclude parameters with None values
from the request payload. This ensures cleaner API interactions and
avoids unintended behavior, improving code reliability and aligning
with best practices.

Fixes zulip#847

Author: pransh62390

pyproject.toml

@@ -63,6 +63,9 @@ module = [
     "feedparser.*",
     "gitlint.*",
     "googleapiclient.*",
+    "google_api_python_client.*",
+    "google_auth_httplib2.*",
+    "google_auth_oauthlib.*",
     "irc.*",
     "mercurial.*",
     "nio.*",

requirements.txt

@@ -17,3 +17,4 @@ types-pytz
 types-requests
 gitlint>=0.13.0
 -r ./zulip/integrations/bridge_with_matrix/requirements.txt
+-r ./zulip/integrations/google/requirements.txt

zulip/integrations/google/get-google-credentials

@@ -2,24 +2,32 @@
 import argparse
 import os
 
-from oauth2client import client, tools
-from oauth2client.file import Storage
+from google.auth.transport.requests import Request
+from google.oauth2.credentials import Credentials
+from google_auth_oauthlib.flow import InstalledAppFlow
 
-flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
+flags = argparse.ArgumentParser(description="Google Calendar Bot")
+flags.add_argument(
+    "--noauth_local_webserver",
+    action="store_true",
+    help="Run OAuth flow in console instead of opening a web browser.",
+)
+args = flags.parse_args()
 
 # If modifying these scopes, delete your previously saved credentials
 # at zulip/bots/gcal/
 # NOTE: When adding more scopes, add them after the previous one in the same field, with a space
 # seperating them.
-SCOPES = "https://www.googleapis.com/auth/calendar.readonly"
+SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"]
 # This file contains the information that google uses to figure out which application is requesting
 # this client's data.
 CLIENT_SECRET_FILE = "client_secret.json"  # noqa: S105
 APPLICATION_NAME = "Zulip Calendar Bot"
 HOME_DIR = os.path.expanduser("~")
+CREDENTIALS_PATH = os.path.join(HOME_DIR, "google-credentials.json")
 
 
-def get_credentials() -> client.Credentials:
+def get_credentials() -> Credentials:
     """Gets valid user credentials from storage.
 
     If nothing has been stored, or if the stored credentials are invalid,
@@ -29,18 +37,32 @@ def get_credentials() -> client.Credentials:
         Credentials, the obtained credential.
     """
 
-    credential_path = os.path.join(HOME_DIR, "google-credentials.json")
-
-    store = Storage(credential_path)
-    credentials = store.get()
-    if not credentials or credentials.invalid:
-        flow = client.flow_from_clientsecrets(os.path.join(HOME_DIR, CLIENT_SECRET_FILE), SCOPES)
-        flow.user_agent = APPLICATION_NAME
-        # This attempts to open an authorization page in the default web browser, and asks the user
-        # to grant the bot access to their data. If the user grants permission, the run_flow()
-        # function returns new credentials.
-        credentials = tools.run_flow(flow, store, flags)
-        print("Storing credentials to " + credential_path)
+    creds = None
+
+    # Check if the credentials file exists
+    if os.path.exists(CREDENTIALS_PATH):
+        creds = Credentials.from_authorized_user_file(CREDENTIALS_PATH, SCOPES)
+
+    # If there are no valid credentials, initiate the OAuth flow
+    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(
+                os.path.join(HOME_DIR, CLIENT_SECRET_FILE), SCOPES
+            )
+            if args.noauth_local_webserver:
+                creds = flow.run_console()
+            else:
+                creds = flow.run_local_server(port=0)
+
+        # Save the credentials for future use
+        with open(CREDENTIALS_PATH, "w") as token_file:
+            token_file.write(creds.to_json())
+
+        print("Storing credentials to " + CREDENTIALS_PATH)
+
+    return creds
 
 
 get_credentials()

zulip/integrations/google/google-calendar

@@ -12,21 +12,16 @@ import time
 from typing import List, Optional, Set, Tuple
 
 import dateutil.parser
-import httplib2
 import pytz
-from oauth2client import client
-from oauth2client.file import Storage
-
-try:
-    from googleapiclient import discovery
-except ImportError:
-    logging.exception("Install google-api-python-client")
-    sys.exit(1)
+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
 
 sys.path.append(os.path.join(os.path.dirname(__file__), "../../"))
 import zulip
 
-SCOPES = "https://www.googleapis.com/auth/calendar.readonly"
+SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"]
 CLIENT_SECRET_FILE = "client_secret.json"  # noqa: S105
 APPLICATION_NAME = "Zulip"
 HOME_DIR = os.path.expanduser("~")
@@ -88,33 +83,40 @@ if not options.zulip_email:
 zulip_client = zulip.init_from_options(options)
 
 
-def get_credentials() -> client.Credentials:
+def get_credentials() -> Credentials:
     """Gets valid user credentials from storage.
 
     If nothing has been stored, or if the stored credentials are invalid,
-    an exception is thrown and the user is informed to run the script in this directory to get
-    credentials.
+    the user will be prompted to authenticate.
 
     Returns:
         Credentials, the obtained credential.
     """
-    try:
-        credential_path = os.path.join(HOME_DIR, "google-credentials.json")
+    credential_path = os.path.join(HOME_DIR, "google-credentials.json")
+    creds = None
+
+    # Load credentials from file if they exist
+    if os.path.exists(credential_path):
+        creds = Credentials.from_authorized_user_file(credential_path, SCOPES)
+
+    # If there are no (valid) credentials available, prompt the user to 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(CLIENT_SECRET_FILE, SCOPES)
+            creds = flow.run_local_server(port=0)
+
+        # Save the credentials for the next run
+        with open(credential_path, "w") as token:
+            token.write(creds.to_json())
 
-        store = Storage(credential_path)
-        return store.get()
-    except client.Error:
-        logging.exception("Error while trying to open the `google-credentials.json` file.")
-        sys.exit(1)
-    except OSError:
-        logging.error("Run the get-google-credentials script from this directory first.")
-        sys.exit(1)
+    return creds
 
 
 def populate_events() -> Optional[None]:
     credentials = get_credentials()
-    creds = credentials.authorize(httplib2.Http())
-    service = discovery.build("calendar", "v3", http=creds)
+    service = build("calendar", "v3", credentials=credentials)
 
     now = datetime.datetime.now(pytz.utc).isoformat()
     feed = (

zulip/integrations/google/requirements.txt

@@ -1,2 +1,3 @@
-httplib2>=0.22.0
-oauth2client>=4.1.3
+google-api-python-client>=2.157.0
+google-auth-httplib2>=0.2.0
+google-auth-oauthlib>=1.2.1