lemmy/crates/apub/src/collections/community_moderators.rs

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Rust
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use crate::{
collections::CommunityContext,
context::lemmy_context,
fetcher::object_id::ObjectId,
generate_moderators_url,
objects::person::ApubPerson,
};
use activitystreams::{
base::AnyBase,
chrono::NaiveDateTime,
collection::kind::OrderedCollectionType,
primitives::OneOrMany,
url::Url,
};
use lemmy_api_common::blocking;
use lemmy_apub_lib::{traits::ApubObject, verify::verify_domains_match};
use lemmy_db_schema::{
source::community::{CommunityModerator, CommunityModeratorForm},
traits::Joinable,
};
use lemmy_db_views_actor::community_moderator_view::CommunityModeratorView;
use lemmy_utils::LemmyError;
use serde::{Deserialize, Serialize};
use serde_with::skip_serializing_none;
#[skip_serializing_none]
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct GroupModerators {
#[serde(rename = "@context")]
context: OneOrMany<AnyBase>,
r#type: OrderedCollectionType,
id: Url,
ordered_items: Vec<ObjectId<ApubPerson>>,
}
#[derive(Clone, Debug)]
pub(crate) struct ApubCommunityModerators(pub(crate) Vec<CommunityModeratorView>);
#[async_trait::async_trait(?Send)]
impl ApubObject for ApubCommunityModerators {
type DataType = CommunityContext;
type TombstoneType = ();
type ApubType = GroupModerators;
fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
None
}
async fn read_from_apub_id(
_object_id: Url,
data: &Self::DataType,
) -> Result<Option<Self>, LemmyError> {
// Only read from database if its a local community, otherwise fetch over http
if data.0.local {
let cid = data.0.id;
let moderators = blocking(data.1.pool(), move |conn| {
CommunityModeratorView::for_community(conn, cid)
})
.await??;
Ok(Some(ApubCommunityModerators { 0: moderators }))
} else {
Ok(None)
}
}
async fn delete(self, _data: &Self::DataType) -> Result<(), LemmyError> {
unimplemented!()
}
async fn to_apub(&self, data: &Self::DataType) -> Result<Self::ApubType, LemmyError> {
let ordered_items = self
.0
.iter()
.map(|m| ObjectId::<ApubPerson>::new(m.moderator.actor_id.clone().into_inner()))
.collect();
Ok(GroupModerators {
context: lemmy_context(),
r#type: OrderedCollectionType::OrderedCollection,
id: generate_moderators_url(&data.0.actor_id)?.into(),
ordered_items,
})
}
fn to_tombstone(&self) -> Result<Self::TombstoneType, LemmyError> {
unimplemented!()
}
async fn from_apub(
apub: &Self::ApubType,
data: &Self::DataType,
expected_domain: &Url,
request_counter: &mut i32,
) -> Result<Self, LemmyError> {
verify_domains_match(expected_domain, &apub.id)?;
let community_id = data.0.id;
let current_moderators = blocking(data.1.pool(), move |conn| {
CommunityModeratorView::for_community(conn, community_id)
})
.await??;
// Remove old mods from database which arent in the moderators collection anymore
for mod_user in &current_moderators {
let mod_id = ObjectId::new(mod_user.moderator.actor_id.clone().into_inner());
if !apub.ordered_items.contains(&mod_id) {
let community_moderator_form = CommunityModeratorForm {
community_id: mod_user.community.id,
person_id: mod_user.moderator.id,
};
blocking(data.1.pool(), move |conn| {
CommunityModerator::leave(conn, &community_moderator_form)
})
.await??;
}
}
// Add new mods to database which have been added to moderators collection
for mod_id in &apub.ordered_items {
let mod_id = ObjectId::new(mod_id.clone());
let mod_user: ApubPerson = mod_id.dereference(&data.1, request_counter).await?;
if !current_moderators
.clone()
.iter()
.map(|c| c.moderator.actor_id.clone())
.any(|x| x == mod_user.actor_id)
{
let community_moderator_form = CommunityModeratorForm {
community_id: data.0.id,
person_id: mod_user.id,
};
blocking(data.1.pool(), move |conn| {
CommunityModerator::join(conn, &community_moderator_form)
})
.await??;
}
}
// This return value is unused, so just set an empty vec
Ok(ApubCommunityModerators { 0: vec![] })
}
}