[kemono] support for post versions

[PowerWasher9000]

Kemono recently allowed access to old post versions/revisions. An option or command to enable downloading of such posts would be nice.

(NSFW) https://kemono.party/fanbox/user/12895523/post/6506302/revision/7295292
(NSFW) https://kemono.party/fanbox/user/5624416/post/6436641/revision/7330315

It appears that versions 2 to 5 of the first post are identical. The files have different filenames (with each version) despite retaining the same hash, so I guess an archive is really needed here.

[a84r7a3rga76fg]

Is it just me that's not seeing a dropdown menu for revisions on the second link?

Looks like revisions have a unique number, maybe link that to a keyword like {revision}.

[mikf]

And, of course, the API does not support it:
https://kemono.party/api/fanbox/user/12895523/post/6506302 (works)
https://kemono.party/api/fanbox/user/12895523/post/6506302/revision/7295292 (does not)

[PowerWasher9000]

Is it just me that's not seeing a dropdown menu for revisions on the second link?

Looks like revisions have a unique number, maybe link that to a keyword like {revision}.

It looks like they cleaned up redundant versions since the time of writing. And a new string for revised content sounds great specially for patreon where artists will sometimes edit artwork then upload under the same filename.

[biggestsonicfan]

Related #4399

[biggestsonicfan]

I am currently grabbing each page's html, parsing the revisions, then grabbing older html data and am going to attempt to parse all the html into a json format identical to what gallery-dl produces. It's not ideal, but it will get the job done for what I need it to do for now.

[komoreshi]

Kemono's new API endpoint update added support for post revisions in the schema, /{service}/user/{creator_id}/post/{post_id}/revisions. There's also a PR to add support for the change in #4677

[sanddudu]

@marshmallowhell My PR only acts as an emergency commit to fix the extractor ASAP so I won't implement anything about revision.

[biggestsonicfan]

Well, at least there's hope now, which is something we didn't have 2 months ago. I can wait patiently for this.

EDIT: Since the PR uses the new API and I already generated my own revision list, I can take the list of urls I created and use the current build to download the json metadata!