client_secret.json_demo

{"installed":{"client_id":"","project_id":"","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://www.googleapis.com/oauth2/v3/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs","client_secret":"","redirect_uris":["","http://localhost"]}}