feat: serve openapi.json at /openapi.json endpoint

src/handlers.rs

@@ -329,6 +329,14 @@ pub async fn tor_handler(
     Ok(format!("{}\n", proxy.is_tor))
 }
 
+pub async fn openapi_json() -> Response {
+    (
+        [(header::CONTENT_TYPE, "application/json; charset=utf-8")],
+        include_str!("../openapi.json"),
+    )
+        .into_response()
+}
+
 pub async fn robots_txt(State(state): State<AppState>) -> Response {
     let body = format!(
         "User-agent: *\n\
@@ -344,6 +352,7 @@ pub async fn robots_txt(State(state): State<AppState>) -> Response {
          Disallow: /hosting\n\
          Disallow: /tor\n\
          Disallow: /health\n\
+         Disallow: /openapi.json\n\
          \n\
          Sitemap: https://{}/sitemap.xml\n",
         state.site_domain

src/routes.rs

@@ -1,6 +1,6 @@
-use axum::Router;
 use axum::middleware;
 use axum::routing::get;
+use axum::Router;
 
 use crate::handlers::{self, AppState};
 use crate::middleware::security_headers;
@@ -10,6 +10,7 @@ pub fn build_router(state: AppState) -> Router {
     Router::new()
         .route("/", get(handlers::root))
         .route("/health", get(handlers::health))
+        .route("/openapi.json", get(handlers::openapi_json))
         .route("/robots.txt", get(handlers::robots_txt))
         .route("/sitemap.xml", get(handlers::sitemap_xml))
         .route("/json", get(handlers::json_handler))