feat: add auto doc via utiopia

src/routes/v1/mod.rs

@@ -1,16 +1,26 @@
 pub mod chat;
 pub mod models;
+mod openapi;
 
 use crate::auth::middleware::auth_middleware;
 use crate::state::app_state::AppState;
 use axum::{Router, middleware, routing::get, routing::post};
 
-pub fn router() -> Router<AppState> {
+fn public_router() -> Router<AppState> {
+    Router::new().route("/openapi.json", get(openapi::openapi_json))
+}
+
+pub fn protected_router() -> Router<AppState> {
     Router::new()
         .route("/models", get(models::list_models))
         .route("/completions", post(chat::completions))
         .route("/chat/completions", post(chat::chat_completions))
         .route("/models/{model}/load", post(models::load_model))
         .route("/models/{model}/unload", post(models::unload_model))
-        .layer(middleware::from_fn(auth_middleware))
+}
+
+pub fn router() -> Router<AppState> {
+    Router::new()
+        .merge(public_router())
+        .merge(protected_router().layer(middleware::from_fn(auth_middleware)))
 }