add support for openwebui (#487)

crates/brightstaff/src/handlers/models.rs

@@ -0,0 +1,40 @@
+use bytes::Bytes;
+use common::api::open_ai::Models;
+use common::configuration::LlmProvider;
+use http_body_util::{combinators::BoxBody, BodyExt, Full};
+use hyper::{Response, StatusCode};
+use serde_json;
+use std::sync::Arc;
+
+pub async fn list_models(
+    llm_providers: Arc<Vec<LlmProvider>>,
+) -> Response<BoxBody<Bytes, hyper::Error>> {
+    let prov = llm_providers.clone();
+    let providers = (*prov).clone();
+    let openai_models = Models::from(providers);
+
+    match serde_json::to_string(&openai_models) {
+        Ok(json) => {
+            let body = Full::new(Bytes::from(json))
+                .map_err(|never| match never {})
+                .boxed();
+            Response::builder()
+                .status(StatusCode::OK)
+                .header("Content-Type", "application/json")
+                .body(body)
+                .unwrap()
+        }
+        Err(_) => {
+            let body = Full::new(Bytes::from_static(
+                b"{\"error\":\"Failed to serialize models\"}",
+            ))
+            .map_err(|never| match never {})
+            .boxed();
+            Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .header("Content-Type", "application/json")
+                .body(body)
+                .unwrap()
+        }
+    }
+}