Add URL to browse the zarr to the error message

[yarikoptic]

ATM it is not trivial to get access to zarr content from web ui, and when I click on download I only get error message as

"Unable to provide download link for zarr assets. Please browse the zarr files directly to do so."

But it isn't clear how to "browse" the zarr files. I think it would be nice to include in the return result the URL to s3 bucket. May be there is some standard way to provide alternative location or alike?

[waxlamp]

Interesting. You can use the "info" icon to look at the asset metadata, which does include an S3 URL that goes to the "root" of the Zarr, but that's not useful (on its own). I think you would need an external application that knows how to "explore" the Zarr using the S3 backend or something like that.

Adding the URL to the error message therefore won't be that helpful directly (still no way to "browse the zarr files directly") but it would be a start. And we probably need some other feature that would in fact allow you to browse properly.

[kabilar]

Thanks team. I agree that an external application to explore the Zarr in the web app would be helpful.

Additionally, when the user clicks on the Download asset button, it would be helpful to be provided the DANDI CLI command to download the asset. For example:

dandi download https://api.dandiarchive.org/api/dandisets/000108/versions/draft/assets/a25835b8-2293-4bf3-81f0-fbb3b22196fd/download/ 

cc @aaronkanzer

[satra]

see related: #1192 (we do have two services linked to zarr)

#1847 - should ideally not have the eye icon for zarr assets or provide the neuroglancer link.