lemmy/crates/apub/src/http/community.rs

113 lines
3.6 KiB
Rust

use crate::{
extensions::context::lemmy_context,
http::{create_apub_response, create_apub_tombstone_response},
objects::ToApub,
ActorType,
};
use activitystreams::{
base::{AnyBase, BaseExt},
collection::{CollectionExt, OrderedCollection, UnorderedCollection},
};
use actix_web::{body::Body, web, HttpResponse};
use lemmy_api_structs::blocking;
use lemmy_db_queries::source::{activity::Activity_, community::Community_};
use lemmy_db_schema::source::{activity::Activity, community::Community};
use lemmy_db_views_actor::community_follower_view::CommunityFollowerView;
use lemmy_utils::LemmyError;
use lemmy_websocket::LemmyContext;
use serde::Deserialize;
#[derive(Deserialize)]
pub struct CommunityQuery {
community_name: String,
}
/// Return the ActivityPub json representation of a local community over HTTP.
pub async fn get_apub_community_http(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse<Body>, LemmyError> {
let community = blocking(context.pool(), move |conn| {
Community::read_from_name(conn, &info.community_name)
})
.await??;
if !community.deleted {
let apub = community.to_apub(context.pool()).await?;
Ok(create_apub_response(&apub))
} else {
Ok(create_apub_tombstone_response(&community.to_tombstone()?))
}
}
/// Returns an empty followers collection, only populating the size (for privacy).
pub async fn get_apub_community_followers(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse<Body>, LemmyError> {
let community = blocking(context.pool(), move |conn| {
Community::read_from_name(&conn, &info.community_name)
})
.await??;
let community_id = community.id;
let community_followers = blocking(context.pool(), move |conn| {
CommunityFollowerView::for_community(&conn, community_id)
})
.await??;
let mut collection = UnorderedCollection::new();
collection
.set_many_contexts(lemmy_context()?)
.set_id(community.followers_url.into())
.set_total_items(community_followers.len() as u64);
Ok(create_apub_response(&collection))
}
/// Returns the community outbox, which is populated by a maximum of 20 posts (but no other
/// activites like votes or comments).
pub async fn get_apub_community_outbox(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse<Body>, LemmyError> {
let community = blocking(context.pool(), move |conn| {
Community::read_from_name(&conn, &info.community_name)
})
.await??;
let community_actor_id = community.actor_id.to_owned();
let activities = blocking(context.pool(), move |conn| {
Activity::read_community_outbox(conn, &community_actor_id)
})
.await??;
let activities = activities
.iter()
.map(AnyBase::from_arbitrary_json)
.collect::<Result<Vec<AnyBase>, serde_json::Error>>()?;
let len = activities.len();
let mut collection = OrderedCollection::new();
collection
.set_many_items(activities)
.set_many_contexts(lemmy_context()?)
.set_id(community.get_outbox_url()?)
.set_total_items(len as u64);
Ok(create_apub_response(&collection))
}
pub async fn get_apub_community_inbox(
info: web::Path<CommunityQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse<Body>, LemmyError> {
let community = blocking(context.pool(), move |conn| {
Community::read_from_name(&conn, &info.community_name)
})
.await??;
let mut collection = OrderedCollection::new();
collection
.set_id(format!("{}/inbox", community.actor_id).parse()?)
.set_many_contexts(lemmy_context()?);
Ok(create_apub_response(&collection))
}