Add `GET /api/v1/sessions/:id` route to get session information

Signed-off-by: Sebastian Martinez <me@sebastinez.dev>

radicle-httpd/src/api/auth.rs

@@ -11,6 +11,8 @@ impl Serialize for DateTime {
     }
 }
 
+#[derive(Clone, Serialize)]
+#[serde(tag = "type", rename_all = "camelCase")]
 pub enum AuthState {
     Authorized(Session),
     Unauthorized {

radicle-httpd/src/api/v1/sessions.rs

@@ -20,7 +20,10 @@ pub const AUTHORIZED_SESSIONS_EXPIRATION: Duration = Duration::weeks(1);
 pub fn router(ctx: Context) -> Router {
     Router::new()
         .route("/sessions", post(session_create_handler))
-        .route("/sessions/:id", put(session_signin_handler))
+        .route(
+            "/sessions/:id",
+            put(session_signin_handler).get(session_handler),
+        )
         .with_state(ctx)
 }
 
@@ -53,6 +56,18 @@ async fn session_create_handler(State(ctx): State<Context>) -> impl IntoResponse
     ))
 }
 
+/// Get a session.
+/// `GET /sessions/:id`
+async fn session_handler(
+    State(ctx): State<Context>,
+    Path(session_id): Path<String>,
+) -> impl IntoResponse {
+    let sessions = ctx.sessions.read().await;
+    let session = sessions.get(&session_id).ok_or(Error::NotFound)?.to_owned();
+
+    Ok::<_, Error>(Json(session))
+}
+
 /// Update session.
 /// `PUT /sessions/:id`
 async fn session_signin_handler(
@@ -100,7 +115,7 @@ mod routes {
     use axum::http::StatusCode;
     use radicle_cli::commands::rad_web::{self, SessionInfo};
 
-    use crate::api::test::{self, post, put};
+    use crate::api::test::{self, get, post, put};
 
     #[tokio::test]
     async fn test_session() {
@@ -131,5 +146,8 @@ mod routes {
         .await;
 
         assert_eq!(response.status(), StatusCode::OK);
+
+        let response = get(&app, format!("/sessions/{}", session_info.session_id)).await;
+        assert_eq!(response.status(), StatusCode::OK);
     }
 }