backup_drive_api.py

import os
import os.path

import write_log as log
logfile="logs.log"

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
from googleapiclient.errors import HttpError
from googleapiclient.http import MediaFileUpload

SCOPES = ["https://www.googleapis.com/auth/drive"]
creds=None
if os.path.exists("token.json"):
    creds=Credentials.from_authorized_user_file("token.json", SCOPES)

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(
            "authenticate.json", SCOPES
        )
        creds=flow.run_local_server(port=0)
    with open("token.json","w") as token:
        token.write(creds.to_json())

try: 
    service = build("drive", "v3", credentials=creds)
    response = service.files().list(
        q="name='BackupFolder' and mimeType='application/vnd.google-apps.folder'",
        spaces='drive'
    ).execute()

    if not response['files']:
        file_metadata={
            'name':'BackupFolder',
            'mimeType':'application/vnd.google-apps.folder'
        }
        file=service.files().create(body=file_metadata, fields='id').execute()
        folder_id=file.get('id')
    else:
        folder_id=response['files'][0]["id"]

    for file in os.listdir('backupfiles'):
        file_metadata={
            "name": file,
            "parents": [folder_id]
        }
        media=MediaFileUpload(f"backupfiles/{file}")
        upload_file=service.files().create(body=file_metadata,
                                           media_body=media,
                                           fields="id").execute()
        print("Backed up file: "+file)
        log.write_log(logfile,"Backed up file: "+file)

except HttpError as e:
    print("Error: "+str(e))
    log.write_log(logfile,"Error: "+str(e))