this post was submitted on 16 Jun 2023
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Programming
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ActivityPub is what instances use to talk to each other, not what the web interface uses. So the way Communities are propagated over the ActivityPub depends on what lemmy does, not what ActivityPub wants. Are you trying to develop your own instance or are you trying to make a 3rd party UI for lemmy?
@Hexorg I've begun yesterday with the question "why can't I access information without first having to know where it is?" I've now basically gone through confusion, anger, disbelieve and now acceptance that there really is nothing to find. In the end the concept of federation says that stuff should be accessible from anywhere. But it isn't. Which is a pretty big problem imo.
My goal is to indeed create a generic fediverse reader, not using any specific platform APIs.
Well mastodon doesn’t have the concept of communities. You’re kinda saying “I’m trying to implement a generic html reader, why can’t I find the search bar” - it’s because not every site uses/needs it.
I'm working on something similar in swift and started my project with the assumption that I'll need different API classes for every type of "instance" I want to gather data from (mastadon, lemmy, kbin, etc) and custom server model objects for each instance (as while some properties might be standard across all instances there will probably be some that are specific to an instance(s)).
Then I'll need those objects to be wrapped in a unified protocol to access and display them. Certainly not ideal, and does seem counterintuitive to the idea of the fedi-verse; but hopefully something for activity pub to work towards.
@evilviper I've actually gone ahead and begun work despite lack of discovery. https://github.com/JustusW/UnifiedFediverseObserver
Early stages, but I already can go through linked relations in many cases.
@Hexorg can't directly reply to your comment because that wasn't federated (oh the sweet irony) :D
Anyway, it's more like I'm trying to write a usenet reader, fully expecting to have to create a curated list of of instances but then finding out there is no way to see what any given instance actually contains outside of writing specific code for each and every one of them.
I skipped through the ActivityPub spec a few days ago, and from the top of my head I think there is a section about Client-Server interactions (as opposed to Server-Server).
Yes but even then it still doesn’t have lemmy specific concepts in there https://www.w3.org/TR/activitypub/#client-addressing