feat: add llama-swap HTTP client

src/lib/llamaswap.ts

@@ -0,0 +1,33 @@
+import { type LlamaSwapConfig } from "./util";
+
+const TIMEOUT_MS = 5000;
+
+export interface ModelInfo {
+  id: string;
+  status: string;
+}
+
+function headersFor(cfg: LlamaSwapConfig): Record<string, string> {
+  const headers: Record<string, string> = {};
+  if (cfg.apiKey) headers["Authorization"] = `Bearer ${cfg.apiKey}`;
+  return headers;
+}
+
+export async function fetchMetrics(cfg: LlamaSwapConfig): Promise<string> {
+  const res = await fetch(`${cfg.baseUrl}/metrics`, {
+    headers: headersFor(cfg),
+    signal: AbortSignal.timeout(TIMEOUT_MS),
+  });
+  if (!res.ok) throw new Error(`metrics HTTP ${res.status}`);
+  return await res.text();
+}
+
+export async function fetchModels(cfg: LlamaSwapConfig): Promise<ModelInfo[]> {
+  const res = await fetch(`${cfg.baseUrl}/v1/models`, {
+    headers: headersFor(cfg),
+    signal: AbortSignal.timeout(TIMEOUT_MS),
+  });
+  if (!res.ok) throw new Error(`models HTTP ${res.status}`);
+  const body = (await res.json()) as { data?: { id: string; status?: { value?: string } }[] };
+  return (body.data ?? []).map((m) => ({ id: m.id, status: m.status?.value ?? "unknown" }));
+}