from __future__ import print_function
from googleapiclient.discovery import build
from httplib2 import Http
from oauth2client import file, client, tools

# If modifying these scopes, delete the file token.json.
SCOPES = 'https://www.googleapis.com/auth/drive.metadata.readonly'

def main():
    """Shows basic usage of the Drive v3 API.
    Prints the names and ids of the first 10 files the user has access to.
    """
    # The file token.json stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
	store = file.Storage('token.json')
	creds = store.get()
	if not creds or creds.invalid:
		flow = client.flow_from_clientsecrets('credentials.json', SCOPES)
		creds = tools.run_flow(flow, store)
	service = build('drive', 'v3', http=creds.authorize(Http()))

    # Call the Drive v3 API
	results = service.files().list(
	pageSize=10, fields="nextPageToken, files(id, name)").execute()
	items = results.get('files', [])

	if not items:
		print('No files found.')
	else:
		print('Files:')
		for item in items:
			print(u'{0} ({1})'.format(item['name'], item['id']))

if __name__ == '__main__':
    main()