feat: naive attempt to resolve followers/following

src/model/actor.rs

@@ -61,6 +61,8 @@ pub enum Relation {
 	Mentions,
 	#[sea_orm(has_many = "super::object::Entity")]
 	Objects,
+	#[sea_orm(has_many = "super::relation::Entity")]
+	Relations,
 	#[sea_orm(has_many = "super::session::Entity")]
 	Sessions,
 }
@@ -125,6 +127,12 @@ impl Related<super::object::Entity> for Entity {
 	}
 }
 
+impl Related<super::relation::Entity> for Entity {
+	fn to() -> RelationDef {
+		Relation::Relations.def()
+	}
+}
+
 impl Related<super::session::Entity> for Entity {
 	fn to() -> RelationDef {
 		Relation::Sessions.def()

src/model/relation.rs

@@ -1,4 +1,4 @@
-use sea_orm::entity::prelude::*;
+use sea_orm::{entity::prelude::*, QuerySelect, SelectColumns};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
 #[sea_orm(table_name = "relations")]
@@ -47,4 +47,58 @@ pub enum Relation {
 	ActorsFollowing,
 }
 
+impl Related<super::actor::Entity> for Entity {
+	fn to() -> RelationDef {
+		Relation::ActorsFollowing.def()
+	}
+}
+
+impl Related<super::activity::Entity> for Entity {
+	fn to() -> RelationDef {
+		Relation::ActivitiesFollow.def()
+	}
+}
+
 impl ActiveModelBehavior for ActiveModel {}
+
+impl Entity {
+	pub async fn followers(uid: &str, db: &DatabaseConnection) -> crate::Result<Vec<String>> {
+		let internal_id = super::actor::Entity::ap_to_internal(uid, db).await?;
+		let out = Entity::find()
+			.join(
+				sea_orm::JoinType::InnerJoin,
+				Entity::belongs_to(super::actor::Entity)
+					.from(Column::Follower)
+					.to(super::actor::Column::Internal)
+					.into()
+			)
+			.filter(Column::Following.eq(internal_id))
+			.select_only()
+			.select_column(super::actor::Column::Id)
+			.into_tuple::<String>()
+			.all(db)
+			.await?;
+
+		Ok(out)
+	}
+
+	pub async fn following(uid: &str, db: &DatabaseConnection) -> crate::Result<Vec<String>> {
+		let internal_id = super::actor::Entity::ap_to_internal(uid, db).await?;
+		let out = Entity::find()
+			.join(
+				sea_orm::JoinType::InnerJoin,
+				Entity::belongs_to(super::actor::Entity)
+					.from(Column::Following)
+					.to(super::actor::Column::Internal)
+					.into()
+			)
+			.filter(Column::Follower.eq(internal_id))
+			.select_only()
+			.select_column(super::actor::Column::Id)
+			.into_tuple::<String>()
+			.all(db)
+			.await?;
+
+		Ok(out)
+	}
+}