Requests for additional APIs

Hello @limey98, I have been working on file.delete API(currently not available in MM). My first query is that there is a single column present in Posts table where full path of file get stored. So how can I delete a full record only by the filename as there is not any specific id present. To be much clear, what parameters should I pass in my API to delete the full record for particular file.
My second query is that all the files get saved in S3 but there is no credentials mentioned as where they are getting saved. So after deleting the record from table how would I remove file from S3 bucket.
These are my two concerns...Any help regarding this will be helpful. Thanks