fix: make preview env optional

env/schema.mjs

@@ -10,8 +10,8 @@ export const serverSchema = z.object({
   CMS_API_KEY: z.string(),
   CMS_ENVIRONMENT: z.enum(["development", "production", "staging", "test"]),
   CMS_URL: z.string(),
-  CMS_PREVIEW_URL: z.string(),
-  CMS_PREVIEW_TOKEN: z.string(),
+  CMS_PREVIEW_URL: z.string().optional(),
+  CMS_PREVIEW_TOKEN: z.string().optional(),
   NODE_ENV: z.enum(["development", "test", "production"]),
   PRINT_QUERY: z.boolean().default(false),
 });

lib/graphql/Query/CurrentBlockPage.graphql

@@ -28,6 +28,10 @@ query GetCurrentBlockPage($locale: String!, $url: String!) {
       ...Preamble
       title
       url
+      system {
+        uid
+        content_type_uid
+      }
     }
     total
   }

middleware.ts

@@ -37,6 +37,7 @@ export async function middleware(request: NextRequest) {
   searchParams.set("uri", pathNameWithoutLocale);
 
   if (request.nextUrl.pathname.includes("preview")) {
+    console.log("IN PREVIEW! Search params: ", request.nextUrl.searchParams);
     if (request.nextUrl.searchParams.get("hash")) {
       ContentstackLivePreview.setConfigFromParams(request.nextUrl.searchParams);