refactor(commands): share custom api verification request flow

src/commands/onboard-custom.ts

@@ -245,38 +245,39 @@ type VerificationResult = {
   error?: unknown;
 };
 
-async function requestOpenAiVerification(params: {
+function resolveVerificationEndpoint(params: {
   baseUrl: string;
-  apiKey: string;
   modelId: string;
-}): Promise<VerificationResult> {
-  // Transform Azure URLs to include the deployment path
+  endpointPath: "chat/completions" | "messages";
+}) {
   const resolvedUrl = isAzureUrl(params.baseUrl)
     ? transformAzureUrl(params.baseUrl, params.modelId)
     : params.baseUrl;
   const endpointUrl = new URL(
-    "chat/completions",
+    params.endpointPath,
     resolvedUrl.endsWith("/") ? resolvedUrl : `${resolvedUrl}/`,
   );
-  // Azure requires api-version query parameter
   if (isAzureUrl(params.baseUrl)) {
     endpointUrl.searchParams.set("api-version", "2024-10-21");
   }
-  const endpoint = endpointUrl.href;
+  return endpointUrl.href;
+}
+
+async function requestVerification(params: {
+  endpoint: string;
+  headers: Record<string, string>;
+  body: Record<string, unknown>;
+}): Promise<VerificationResult> {
   try {
     const res = await fetchWithTimeout(
-      endpoint,
+      params.endpoint,
       {
         method: "POST",
         headers: {
           "Content-Type": "application/json",
-          ...buildOpenAiHeaders(params.apiKey),
+          ...params.headers,
         },
-        body: JSON.stringify({
-          model: params.modelId,
-          messages: [{ role: "user", content: "Hi" }],
-          max_tokens: 5,
-        }),
+        body: JSON.stringify(params.body),
       },
       VERIFY_TIMEOUT_MS,
     );
@@ -286,45 +287,46 @@ async function requestOpenAiVerification(params: {
   }
 }
 
+async function requestOpenAiVerification(params: {
+  baseUrl: string;
+  apiKey: string;
+  modelId: string;
+}): Promise<VerificationResult> {
+  const endpoint = resolveVerificationEndpoint({
+    baseUrl: params.baseUrl,
+    modelId: params.modelId,
+    endpointPath: "chat/completions",
+  });
+  return await requestVerification({
+    endpoint,
+    headers: buildOpenAiHeaders(params.apiKey),
+    body: {
+      model: params.modelId,
+      messages: [{ role: "user", content: "Hi" }],
+      max_tokens: 5,
+    },
+  });
+}
+
 async function requestAnthropicVerification(params: {
   baseUrl: string;
   apiKey: string;
   modelId: string;
 }): Promise<VerificationResult> {
-  // Transform Azure URLs to include the deployment path
-  const resolvedUrl = isAzureUrl(params.baseUrl)
-    ? transformAzureUrl(params.baseUrl, params.modelId)
-    : params.baseUrl;
-  const endpointUrl = new URL(
-    "messages",
-    resolvedUrl.endsWith("/") ? resolvedUrl : `${resolvedUrl}/`,
-  );
-  // Azure requires api-version query parameter
-  if (isAzureUrl(params.baseUrl)) {
-    endpointUrl.searchParams.set("api-version", "2024-10-21");
-  }
-  const endpoint = endpointUrl.href;
-  try {
-    const res = await fetchWithTimeout(
-      endpoint,
-      {
-        method: "POST",
-        headers: {
-          "Content-Type": "application/json",
-          ...buildAnthropicHeaders(params.apiKey),
-        },
-        body: JSON.stringify({
-          model: params.modelId,
-          max_tokens: 16,
-          messages: [{ role: "user", content: "Hi" }],
-        }),
-      },
-      VERIFY_TIMEOUT_MS,
-    );
-    return { ok: res.ok, status: res.status };
-  } catch (error) {
-    return { ok: false, error };
-  }
+  const endpoint = resolveVerificationEndpoint({
+    baseUrl: params.baseUrl,
+    modelId: params.modelId,
+    endpointPath: "messages",
+  });
+  return await requestVerification({
+    endpoint,
+    headers: buildAnthropicHeaders(params.apiKey),
+    body: {
+      model: params.modelId,
+      max_tokens: 16,
+      messages: [{ role: "user", content: "Hi" }],
+    },
+  });
 }
 
 async function promptBaseUrlAndKey(params: {