bug: Show indicator for indirect pins (within MFS breadcrumbs)

[lidel]

Extracted from #1713

Problem

Right now user can't tell when a file is pinned indirectly (when file is not pinned, but its parent dir is).
This is especially problematic when MFS autopinning is enabled.
In that scenario, everything is pinned indirectly via MFS root CID, but that is not reflected in the Files interface in any way.

How to detect indirect pins?

We need to limit checks to MFS. Even if file is pinned indirectly via some CID that is not in MFS, we won't be able to show that.
In the context of WebUI, we should check if any level from breadcrumbs is pinned (locally or remotely) and update "Pin Status" column.

How to indicate indirect pins?

I believe this should be only indicate in "Pin Status" column on Files screen, and should be distinct enough, so people know that file is pinned via one of its parents.

• We could display a faded cloud icon (30% etc) next to files that are pinned indirectly
• .. or design a new icon for such files
• ?

Would appreciate help / troughts / suggestions here. @jessicaschilling @rafaelramalho19

[jessicaschilling]

I'd vote for the lower-opacity icon plus mouseover explanatory text. We experimented quite a bit with franken-icons in that column last year and none of them really worked ...

[redactedscribe]

It's a shame that something as useful as visually indicating if one of your files is pinned or not via an "old" folder recursive pin isn't yet implemented. It may be that I've not yet fully grasped IPFS, but the Web UI constantly gives me the impression that the GC will eat one of my files, because when I change a folder's contents, its CID will of course update too.

Say 1 new file was added to this folder. The pinned CID of the folder before this change happened still recursively pins all files except this 1 new file (I think). A pin of the folder's new CID is necessary to make sure the new file stays local and isn't removed. ipfs add automatically pins an added file, why not the UI's Import feature?

As far as I can tell, only pinning files is the best method if reliable visual feedback is desired (when you know the contents of a folder's files won't change but you still plan to add new files).

Is there not a way that, for example, when a folder's CID changes and the previous CID was recursive, automatically recursively pin the new CID? I'm not sure how much that would solve, but at least all new changes to the folder's contents would be automatically pinned.

I'd just like to be confident that anything I Import won't be mistakenly removed by GC.