Can get the name of a room through the API

src/main.rs

@@ -57,6 +57,7 @@ async fn main() -> std::io::Result<()> {
             .route("/api", web::get().to(api::api_home))
             .route("/api", web::post().to(api::api_home))
             .route("/api/account/whoami", web::get().to(api::account::who_am_i))
+            .route("/api/room/{room_id}/name", web::get().to(api::rooms::name))
             .service(web::resource("/api/ws").route(web::get().to(api::ws::ws)))
     })
     .workers(4)

src/server/api/mod.rs

@@ -3,6 +3,7 @@ use crate::server::HttpResult;
 use actix_web::HttpResponse;
 
 pub mod account;
+pub mod rooms;
 pub mod ws;
 
 /// API Home route

src/server/api/rooms.rs

@@ -0,0 +1,31 @@
+use crate::extractors::client_auth::APIClientAuth;
+use crate::server::HttpResult;
+use actix_web::{web, HttpResponse};
+use ruma::api::client::state;
+use ruma::events::StateEventType;
+use ruma::OwnedRoomId;
+
+#[derive(serde::Deserialize)]
+pub struct RoomIDInPath {
+    room_id: OwnedRoomId,
+}
+
+#[derive(serde::Serialize)]
+struct GetRoomNameResponse {
+    name: String,
+}
+
+/// Get room name
+pub async fn name(auth: APIClientAuth, path: web::Path<RoomIDInPath>) -> HttpResult {
+    let res = auth
+        .send_request(state::get_state_events_for_key::v3::Request::new(
+            path.room_id.clone(),
+            StateEventType::RoomName,
+            String::default(),
+        ))
+        .await?;
+
+    Ok(HttpResponse::Ok().json(GetRoomNameResponse {
+        name: res.content.get_field("name")?.unwrap_or("").to_string(),
+    }))
+}

src/server/mod.rs

@@ -28,6 +28,8 @@ pub enum HttpFailure {
     MatrixApiClientError(#[from] ruma::api::client::Error),
     #[error("a matrix client error occurred: {0}")]
     MatrixClientError(String),
+    #[error("a serde_json error occurred: {0}")]
+    SerdeJsonError(#[from] serde_json::error::Error),
 }
 
 impl ResponseError for HttpFailure {