fix: if submission has been reviewed do not allow cancellation

Author: steveoh

functions/https/postCancelCorner.js

@@ -20,6 +20,25 @@ export const cancelCorner = async (data, uid) => {
     const reference = db.collection('submissions').doc(data.key);
     const snapshot = await reference.get();
 
+    if (!snapshot.exists) {
+      throw new https.HttpsError('not-found', 'corner submission not found');
+    }
+
+    const data = snapshot.data();
+    if (
+      data.status?.ugrc?.reviewedAt ||
+      data.status?.county?.reviewedAt ||
+      data.published === true ||
+      data.sgid.approved === true
+    ) {
+      logger.info('skipping cancellation because of status', {
+        status: data.status,
+        published: data.published,
+      });
+
+      return 0; // Already reviewed, cannot cancel
+    }
+
     logger.debug('cancelling submission', { key: data.key });
 
     await reference.set(