HSN / SAC item wise Sales / Purchase Summary Report

when the custom reports are finally ready for use, i would like to see the ability to generate a HSN/SAC summary report for sales and purchases separately, not unlike what has been shown here -

https://webcache.googleusercontent.com/search?q=cache:OXOCXJWahMAJ:https://help.tallysolutions.com/docs/te9rel60/Tax_India/gst/gst_HSN_Summary.htm+&cd=1&hl=en&ct=clnk&gl=in

right now i am generating such a report in spreadsheet by going through the invoice PDFs and adding them up. (there are only a few of them right now)