I'm trying to find a way to retrieve a specific Google Merchant Center report (BestSellers_TopProducts_) and upload it to BigQuery as part of a specific ETL process we're developing for a customer we have at my workplace.
So far, I know you can set up the BigQuery Data Transfer service so it automates the process of downloading this report but I was wondering if I could accomplish the same with Python and some API libraries from Google (like python-google-shopping) but I may be overdoing it and setting up the service is the way to go.
Is there a way to accomplish this rather than resorting to the aforementioned service?
On the other hand, and assuming the BigQuery Data Transfer service is the way to go, I see (in the examples) you need to create and provide the dataset you're going to extract the report data to so I guess the extraction is limited to the GCP project you're working with.
I mean... you can't extract the report data for a third-party even if you had the proper service account credentials, right?