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, r#type: OrderedCollectionType, id: Url, ordered_items: Vec>, } #[derive(Clone, Debug)] pub(crate) struct ApubCommunityModerators(pub(crate) Vec); #[async_trait::async_trait(?Send)] impl ApubObject for ApubCommunityModerators { type DataType = CommunityContext; type TombstoneType = (); type ApubType = GroupModerators; fn last_refreshed_at(&self) -> Option { None } async fn read_from_apub_id( _object_id: Url, data: &Self::DataType, ) -> Result, 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 { let ordered_items = self .0 .iter() .map(|m| ObjectId::::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 { unimplemented!() } async fn from_apub( apub: &Self::ApubType, data: &Self::DataType, expected_domain: &Url, request_counter: &mut i32, ) -> Result { 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 ¤t_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![] }) } }