I have a requirement where the client wants us to do the following
Whenever a document is downloaded to the visitor’s system, the local file reflects the DAM asset’s actual Name property.
For example, a visitor clicks a link for this URL: https://www.abcdef.com/ca/en/assets/ndx/flyers/frobnitz-buy-one-get-onefree/7119-1127.pdf
The PDF is shown in the visitor’s browser.
If the visitor then saves or downloads the PDF, the file stored on their system has this file name: frobnitz-buy-one-get-one-free.pdf
If I understand correctly, file name needs be the folder name (frobnitz-buy-one-get-one-free.pdf) instead of the actual node name(119-1127.pdf) in jcr. You could look for some existing browser plugins to change the file name on the fly post download or develop one as per requirement. Not certain if this can be achieved server side
You can use download attribute in HTML5 for this requirement- HTML a download Attribute
If the above does not work then you can write a custom filter to rewrite the content disposition header value for all PDF request URLs.