Function parse_admin_gpt2api_rs_response

crates/frontend/src/api.rs:2552–2579

(response: gloo_net::http::Response)

#[cfg(not(feature = "mock"))]
async fn parse_admin_gpt2api_rs_response<T>(response: gloo_net::http::Response) -> Result<T, String>
where
    T: DeserializeOwned,
{
    if !response.ok() {
        let text = response.text().await.unwrap_or_default();
        return Err(format!("Failed: {text}"));
    }
    // Guard against SPA fallback returning index.html with a 200. Without this
    // check, `response.json()` on the HTML body surfaces as the cryptic
    // "Parse error: SerdeError(expected value)" banner. Surface a clearer
    // message so the operator knows the gpt2api-rs integration is missing on
    // the backend rather than chasing a phantom JSON bug.
    let content_type = response
        .headers()
        .get("content-type")
        .unwrap_or_default()
        .to_lowercase();
    if !content_type.contains("application/json") {
        return Err("gpt2api-rs admin endpoint is not available on this backend (got a non-JSON \
                    response). Ensure the gpt2api-rs integration is enabled on the server build."
            .to_string());
    }
    response
        .json()
        .await
        .map_err(|e| format!("Parse error: {:?}", e))
}

#[cfg(not(feature = "mock"))]
async fn get_admin_gpt2api_rs<T>(path: &str) -> Result<T, String>