DAM Embargoed asset pop-up (asset publish only when on time reached)

Hi Team,

When author activates the asset, and the effective publish date is not reached, a popup will display.

So here, we have an option in metadata of an asset is "effective date" it is a date field.

Now the requirement if we publish the asset only when it reach effective dates, it we try to publish asset before effective date then it'll show a pop-up,

Asset will not be published until effective date is reached.."

Give option to Cancel or Proceed with in Pop-up.  Proceed will activate the asset.

Not sure how to do this, we need to write a JS, but which OOTB JS we need to overlay for asset metadata, or how to do this?

Note : here "Effective dates" is a custom date field in metadaschema.

Scenario : Suppose, if author set Effective date as 30-Dec-2020 and want to activate the asset before mention effective date 30-Dec-2020, then instead of publishing it'll show the pop-up 

"Asset will not be published until effective date is reached.."

Give option to Cancel or Proceed with in Pop-up.  Proceed will activate the asset.

@arunpatidar  @vijayalakshmi_s  @kautuk_sahni @theo_pendle   @nikhil-kumar