fix: set search params in page

lib/previewRequest.ts

@@ -10,38 +10,34 @@ import ContentstackLivePreview from "@contentstack/live-preview-utils";
 export async function previewRequest<T>(
   query: string | DocumentNode,
   variables?: {}
-): Promise<Data<T> | null> {
-  const hash = ContentstackLivePreview.hash;
+): Promise<Data<T>> {
+  try {
+    const hash = ContentstackLivePreview.hash;
 
-  if (!hash) {
-    return null;
-  }
+    if (!hash) {
+      throw new Error("No hash received");
+    }
 
-  if (!env.CMS_PREVIEW_URL || !env.CMS_PREVIEW_TOKEN) {
-    throw new Error("No preview URL");
-  }
-  const headers = new Headers();
+    if (!env.CMS_PREVIEW_URL || !env.CMS_PREVIEW_TOKEN) {
+      throw new Error("No preview URL or token");
+    }
 
-  headers.append("access_token", env.CMS_ACCESS_TOKEN);
-  headers.append("Content-Type", "application/json");
-  headers.append("preview_token", env.CMS_PREVIEW_TOKEN);
-  headers.append("live_preview", hash);
+    const headers = new Headers({
+      access_token: env.CMS_ACCESS_TOKEN,
+      preview_token: env.CMS_PREVIEW_TOKEN,
+      live_preview: hash,
+    });
 
-  const response = await fetch(env.CMS_PREVIEW_URL, {
-    method: "POST",
-    headers,
-    body: JSON.stringify({
-      query,
+    const response = await graphqlRequest<T>({
+      document: query,
+      requestHeaders: headers,
+      url: env.CMS_PREVIEW_URL,
       variables,
-    }),
-  });
+    });
 
-  if (!response.ok) {
-    console.log(response);
-    throw new Error("Cound not fetch preview content");
+    return { data: response };
+  } catch (error) {
+    console.error(error);
+    throw new Error("Something went wrong");
   }
-
-  const { data } = await response.json();
-
-  return data as Data<T>;
 }