lemmy/crates/apub/src/api/read_community.rs

88 lines
2.8 KiB
Rust

use crate::{fetcher::resolve_actor_identifier, objects::community::ApubCommunity};
use activitypub_federation::config::Data;
use actix_web::web::{Json, Query};
use lemmy_api_common::{
community::{GetCommunity, GetCommunityResponse},
context::LemmyContext,
utils::{check_private_instance, is_mod_or_admin_opt, local_user_view_from_jwt_opt_new},
};
use lemmy_db_schema::source::{
actor_language::CommunityLanguage,
community::Community,
local_site::LocalSite,
site::Site,
};
use lemmy_db_views::structs::LocalUserView;
use lemmy_db_views_actor::structs::{CommunityModeratorView, CommunityView};
use lemmy_utils::error::{LemmyError, LemmyErrorExt, LemmyErrorExt2, LemmyErrorType};
#[tracing::instrument(skip(context))]
pub async fn get_community(
data: Query<GetCommunity>,
context: Data<LemmyContext>,
mut local_user_view: Option<LocalUserView>,
) -> Result<Json<GetCommunityResponse>, LemmyError> {
local_user_view_from_jwt_opt_new(&mut local_user_view, data.auth.as_ref(), &context).await;
let local_site = LocalSite::read(&mut context.pool()).await?;
if data.name.is_none() && data.id.is_none() {
Err(LemmyErrorType::NoIdGiven)?
}
check_private_instance(&local_user_view, &local_site)?;
let person_id = local_user_view.as_ref().map(|u| u.person.id);
let community_id = match data.id {
Some(id) => id,
None => {
let name = data.name.clone().unwrap_or_else(|| "main".to_string());
resolve_actor_identifier::<ApubCommunity, Community>(&name, &context, &local_user_view, true)
.await
.with_lemmy_type(LemmyErrorType::CouldntFindCommunity)?
.id
}
};
let is_mod_or_admin = is_mod_or_admin_opt(
&mut context.pool(),
local_user_view.as_ref(),
Some(community_id),
)
.await
.is_ok();
let community_view = CommunityView::read(
&mut context.pool(),
community_id,
person_id,
is_mod_or_admin,
)
.await
.with_lemmy_type(LemmyErrorType::CouldntFindCommunity)?;
let moderators = CommunityModeratorView::for_community(&mut context.pool(), community_id)
.await
.with_lemmy_type(LemmyErrorType::CouldntFindCommunity)?;
let site_id = Site::instance_actor_id_from_url(community_view.community.actor_id.clone().into());
let mut site = Site::read_from_apub_id(&mut context.pool(), &site_id.into()).await?;
// no need to include metadata for local site (its already available through other endpoints).
// this also prevents us from leaking the federation private key.
if let Some(s) = &site {
if s.actor_id.domain() == Some(context.settings().hostname.as_ref()) {
site = None;
}
}
let community_id = community_view.community.id;
let discussion_languages = CommunityLanguage::read(&mut context.pool(), community_id).await?;
Ok(Json(GetCommunityResponse {
community_view,
site,
moderators,
discussion_languages,
}))
}