From 20415a038663dae65d68545c3f40901dd8916c16 Mon Sep 17 00:00:00 2001
From: alemi <me@alemi.dev>
Date: Fri, 22 Mar 2024 01:52:02 +0100
Subject: [PATCH] feat: barebones following/followers collections

---
 src/activitypub/user.rs       | 28 ++++++++++++++++++++++++++++
 src/activitypub/well_known.rs |  2 ++
 src/server.rs                 |  2 ++
 3 files changed, 32 insertions(+)

diff --git a/src/activitypub/user.rs b/src/activitypub/user.rs
index 464403d4..493cc361 100644
--- a/src/activitypub/user.rs
+++ b/src/activitypub/user.rs
@@ -22,6 +22,34 @@ pub async fn view(State(ctx) : State<Context>, Path(id): Path<String>) -> Result
 	}
 }
 
+pub async fn followers(
+	State(ctx): State<Context>,
+	Path(id): Path<String>,
+) -> Result<JsonLD<serde_json::Value>, StatusCode> {
+	Ok(JsonLD(
+		serde_json::Value::new_object()
+			.set_id(Some(&format!("{}/users/{}/followers", ctx.base(), id)))
+			.set_collection_type(Some(CollectionType::OrderedCollection))
+			.set_total_items(Some(0))
+			.set_first(Node::link(format!("{}/users/{}/followers?page=true", ctx.base(), id)))
+			.ld_context()
+	))
+}
+
+pub async fn following(
+	State(ctx): State<Context>,
+	Path(id): Path<String>,
+) -> Result<JsonLD<serde_json::Value>, StatusCode> {
+	Ok(JsonLD(
+		serde_json::Value::new_object()
+			.set_id(Some(&format!("{}/users/{}/following", ctx.base(), id)))
+			.set_collection_type(Some(CollectionType::OrderedCollection))
+			.set_total_items(Some(0))
+			.set_first(Node::link(format!("{}/users/{}/following?page=true", ctx.base(), id)))
+			.ld_context()
+	))
+}
+
 pub async fn outbox(
 	State(ctx): State<Context>,
 	Path(id): Path<String>,
diff --git a/src/activitypub/well_known.rs b/src/activitypub/well_known.rs
index 36abcca9..910e73e5 100644
--- a/src/activitypub/well_known.rs
+++ b/src/activitypub/well_known.rs
@@ -30,6 +30,8 @@ pub async fn nodeinfo_discovery(State(ctx): State<Context>) -> Json<NodeInfoDisc
 	})
 }
 
+// TODO either vendor or fork nodeinfo-rs because it still represents "repository" and "homepage"
+// even if None! technically leads to invalid nodeinfo 2.0
 pub async fn nodeinfo(State(ctx): State<Context>, Path(version): Path<String>) -> Result<Json<nodeinfo::NodeInfoOwned>, StatusCode> {
 	// TODO it's unsustainable to count these every time, especially comments since it's a complex
 	// filter! keep these numbers caches somewhere, maybe db, so that we can just look them up
diff --git a/src/server.rs b/src/server.rs
index 3388be5c..1be31c01 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -86,6 +86,8 @@ pub async fn serve(db: DatabaseConnection, domain: String) {
 		.route("/users/:id", get(ap::user::view))
 		.route("/users/:id/inbox", post(ap::user::inbox))
 		.route("/users/:id/outbox", get(ap::user::outbox))
+		.route("/users/:id/followers", get(ap::user::followers))
+		.route("/users/:id/following", get(ap::user::following))
 		// specific object routes
 		.route("/activities/:id", get(ap::activity::view))
 		.route("/objects/:id", get(ap::object::view))