firestore_service.py

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# Licensed under the Apache License, Version 2.0 (the 'License');
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# http://www.apache.org/licenses/LICENSE-2.0
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"""Functions to handle database operations."""

from google.cloud import firestore

# The prefix used by the Google Chat API in the User resource name.
USERS_PREFIX = "users/"

# The name of the users collection in the database.
USERS_COLLECTION = "users"

# Initialize the Firestore database using Application Default Credentials.
db = firestore.Client(database="auth-data")

def store_token(user_name: str, access_token: str, refresh_token: str):
    """Saves the user's OAuth2 tokens to storage."""
    doc_ref = db.collection(USERS_COLLECTION).document(user_name.replace(USERS_PREFIX, ""))
    doc_ref.set({ "accessToken": access_token, "refreshToken": refresh_token })

def get_token(user_name: str) -> dict | None:
    """Fetches the user's OAuth2 tokens from storage."""
    doc = db.collection(USERS_COLLECTION).document(user_name.replace(USERS_PREFIX, "")).get()
    if doc.exists:
        return doc.to_dict()
    return None