// Usage (async () => const drive = await authenticate(); await downloadFile(drive, '1ABC123xyz789', './myfile.pdf'); )(); Step 1: Get access token
npm install googleapis @google-cloud/local-auth const google = require('googleapis'); const fs = require('fs'); const readline = require('readline'); const SCOPES = ['https://www.googleapis.com/auth/drive.readonly']; const TOKEN_PATH = 'token.json'; const CREDENTIALS_PATH = 'credentials.json';
if os.path.exists(token_file): creds = Credentials.from_authorized_user_file(token_file, SCOPES) google drive api download
async function downloadFile(drive, fileId, destPath, exportMimeType = null) try let response; if (exportMimeType) response = await drive.files.export( fileId, mimeType: exportMimeType , responseType: 'stream' ); else response = await drive.files.get( fileId, alt: 'media' , responseType: 'stream' );
if not creds or not creds.valid: if creds and creds.expired and creds.refresh_token: creds.refresh(Request()) else: if not os.path.exists(creds_file): print(f"Error: creds_file not found.") sys.exit(1) flow = InstalledAppFlow.from_client_secrets_file(creds_file, SCOPES) creds = flow.run_local_server(port=0) with open(token_file, 'w') as token: token.write(creds.to_json()) // Usage (async () => const drive =
original_name = metadata['name'] mime_type = metadata['mimeType']
# Using OAuth 2.0 Playground or gcloud CLI gcloud auth print-access-token // Usage (async () =>
fh = io.FileIO(destination_path, 'wb') downloader = MediaIoBaseDownload(fh, request) done = False while not done: status, done = downloader.next_chunk() print(f"Download int(status.progress() * 100)% complete.") print(f"File saved to destination_path") except Exception as e: print(f"Error: e") service = get_authenticated_service() file_id = '1ABC123xyz789' # Replace with your file ID For a regular file (e.g., PDF, image) download_file(service, file_id, 'downloaded_file.pdf') For a Google Doc (export to PDF) download_file(service, file_id, 'document.pdf', mime_type='application/pdf') Node.js (JavaScript) Example Install: