+use crate::{
+ activities::{
+ community::send_activity_in_community,
+ generate_activity_id,
+ verify_is_public,
+ verify_mod_action,
+ verify_person_in_community,
+ },
+ activity_lists::AnnouncableActivities,
+ local_instance,
+ objects::{community::ApubCommunity, person::ApubPerson, post::ApubPost},
+ protocol::{
+ activities::{
+ community::{collection_add::CollectionAdd, collection_remove::CollectionRemove},
+ create_or_update::page::CreateOrUpdatePage,
+ CreateOrUpdateType,
+ },
+ InCommunity,
+ },
+ ActorType,
+ SendActivity,
+};
+use activitypub_federation::{
+ core::object_id::ObjectId,
+ data::Data,
+ traits::{ActivityHandler, Actor},
+};
+use activitystreams_kinds::{activity::AddType, public};
+use lemmy_api_common::{
+ community::{AddModToCommunity, AddModToCommunityResponse},
+ context::LemmyContext,
+ post::{FeaturePost, PostResponse},
+ utils::{generate_featured_url, generate_moderators_url, get_local_user_view_from_jwt},
+};
+use lemmy_db_schema::{
+ impls::community::CollectionType,
+ source::{
+ community::{Community, CommunityModerator, CommunityModeratorForm},
+ moderator::{ModAddCommunity, ModAddCommunityForm},
+ person::Person,
+ post::{Post, PostUpdateForm},
+ },
+ traits::{Crud, Joinable},
+};
+use lemmy_utils::error::LemmyError;
+use url::Url;
+
+impl CollectionAdd {
+ #[tracing::instrument(skip_all)]
+ pub async fn send_add_mod(
+ community: &ApubCommunity,
+ added_mod: &ApubPerson,
+ actor: &ApubPerson,
+ context: &LemmyContext,
+ ) -> Result<(), LemmyError> {
+ let id = generate_activity_id(
+ AddType::Add,
+ &context.settings().get_protocol_and_hostname(),
+ )?;
+ let add = CollectionAdd {
+ actor: ObjectId::new(actor.actor_id()),
+ to: vec![public()],
+ object: added_mod.actor_id(),
+ target: generate_moderators_url(&community.actor_id)?.into(),
+ cc: vec![community.actor_id()],
+ kind: AddType::Add,
+ id: id.clone(),
+ audience: Some(ObjectId::new(community.actor_id())),
+ };
+
+ let activity = AnnouncableActivities::CollectionAdd(add);
+ let inboxes = vec![added_mod.shared_inbox_or_inbox()];
+ send_activity_in_community(activity, actor, community, inboxes, true, context).await
+ }
+
+ pub async fn send_add_featured_post(
+ community: &ApubCommunity,
+ featured_post: &ApubPost,
+ actor: &ApubPerson,
+ context: &LemmyContext,
+ ) -> Result<(), LemmyError> {
+ let id = generate_activity_id(
+ AddType::Add,
+ &context.settings().get_protocol_and_hostname(),
+ )?;
+ let add = CollectionAdd {
+ actor: ObjectId::new(actor.actor_id()),
+ to: vec![public()],
+ object: featured_post.ap_id.clone().into(),
+ target: generate_featured_url(&community.actor_id)?.into(),
+ cc: vec![community.actor_id()],
+ kind: AddType::Add,
+ id: id.clone(),
+ audience: Some(ObjectId::new(community.actor_id())),
+ };
+ let activity = AnnouncableActivities::CollectionAdd(add);
+ send_activity_in_community(activity, actor, community, vec![], true, context).await
+ }
+}
+
+#[async_trait::async_trait(?Send)]
+impl ActivityHandler for CollectionAdd {
+ type DataType = LemmyContext;
+ type Error = LemmyError;
+
+ fn id(&self) -> &Url {
+ &self.id
+ }
+
+ fn actor(&self) -> &Url {
+ self.actor.inner()
+ }
+
+ #[tracing::instrument(skip_all)]
+ async fn verify(
+ &self,
+ context: &Data<LemmyContext>,
+ request_counter: &mut i32,
+ ) -> Result<(), LemmyError> {
+ verify_is_public(&self.to, &self.cc)?;
+ let community = self.community(context, request_counter).await?;
+ verify_person_in_community(&self.actor, &community, context, request_counter).await?;
+ verify_mod_action(
+ &self.actor,
+ &self.object,
+ community.id,
+ context,
+ request_counter,
+ )
+ .await?;
+ Ok(())
+ }
+
+ #[tracing::instrument(skip_all)]
+ async fn receive(
+ self,
+ context: &Data<LemmyContext>,
+ request_counter: &mut i32,
+ ) -> Result<(), LemmyError> {
+ let (community, collection_type) =
+ Community::get_by_collection_url(context.pool(), &self.target.into()).await?;
+ match collection_type {
+ CollectionType::Moderators => {
+ let new_mod = ObjectId::<ApubPerson>::new(self.object)
+ .dereference(context, local_instance(context).await, request_counter)
+ .await?;
+
+ // If we had to refetch the community while parsing the activity, then the new mod has already
+ // been added. Skip it here as it would result in a duplicate key error.
+ let new_mod_id = new_mod.id;
+ let moderated_communities =
+ CommunityModerator::get_person_moderated_communities(context.pool(), new_mod_id).await?;
+ if !moderated_communities.contains(&community.id) {
+ let form = CommunityModeratorForm {
+ community_id: community.id,
+ person_id: new_mod.id,
+ };
+ CommunityModerator::join(context.pool(), &form).await?;
+
+ // write mod log
+ let actor = self
+ .actor
+ .dereference(context, local_instance(context).await, request_counter)
+ .await?;
+ let form = ModAddCommunityForm {
+ mod_person_id: actor.id,
+ other_person_id: new_mod.id,
+ community_id: community.id,
+ removed: Some(false),
+ };
+ ModAddCommunity::create(context.pool(), &form).await?;
+ }
+ // TODO: send websocket notification about added mod
+ }
+ CollectionType::Featured => {
+ let post = ObjectId::<ApubPost>::new(self.object)
+ .dereference(context, local_instance(context).await, request_counter)
+ .await?;
+ let form = PostUpdateForm::builder()
+ .featured_community(Some(true))
+ .build();
+ Post::update(context.pool(), post.id, &form).await?;
+ }
+ }
+ Ok(())
+ }
+}
+
+#[async_trait::async_trait(?Send)]
+impl SendActivity for AddModToCommunity {
+ type Response = AddModToCommunityResponse;
+
+ async fn send_activity(
+ request: &Self,
+ _response: &Self::Response,
+ context: &LemmyContext,
+ ) -> Result<(), LemmyError> {
+ let local_user_view =
+ get_local_user_view_from_jwt(&request.auth, context.pool(), context.secret()).await?;
+ let community: ApubCommunity = Community::read(context.pool(), request.community_id)
+ .await?
+ .into();
+ let updated_mod: ApubPerson = Person::read(context.pool(), request.person_id)
+ .await?
+ .into();
+ if request.added {
+ CollectionAdd::send_add_mod(
+ &community,
+ &updated_mod,
+ &local_user_view.person.into(),
+ context,
+ )
+ .await
+ } else {
+ CollectionRemove::send_remove_mod(
+ &community,
+ &updated_mod,
+ &local_user_view.person.into(),
+ context,
+ )
+ .await
+ }
+ }
+}
+
+#[async_trait::async_trait(?Send)]
+impl SendActivity for FeaturePost {
+ type Response = PostResponse;
+
+ async fn send_activity(
+ request: &Self,
+ response: &Self::Response,
+ context: &LemmyContext,
+ ) -> Result<(), LemmyError> {
+ let local_user_view =
+ get_local_user_view_from_jwt(&request.auth, context.pool(), context.secret()).await?;
+ // Deprecated, for backwards compatibility with 0.17
+ CreateOrUpdatePage::send(
+ &response.post_view.post,
+ local_user_view.person.id,
+ CreateOrUpdateType::Update,
+ context,
+ )
+ .await?;
+ let community = Community::read(context.pool(), response.post_view.community.id)
+ .await?
+ .into();
+ let post = response.post_view.post.clone().into();
+ let person = local_user_view.person.into();
+ if request.featured {
+ CollectionAdd::send_add_featured_post(&community, &post, &person, context).await
+ } else {
+ CollectionRemove::send_remove_featured_post(&community, &post, &person, context).await
+ }
+ }
+}