Added migration for disabling preview of quizzes

Author: Rajat

apps/web/.migrations/28-03-26_00-00-set-quiz-requires-enrollment.js

@@ -0,0 +1,39 @@
+/**
+ * Sets `requiresEnrollment` to true for all quiz lessons.
+ *
+ * Usage:
+ * DB_CONNECTION_STRING=<mongodb-connection-string> node 28-03-26_00-00-set-quiz-requires-enrollment.js
+ */
+import mongoose from "mongoose";
+
+const DB_CONNECTION_STRING = process.env.DB_CONNECTION_STRING;
+
+if (!DB_CONNECTION_STRING) {
+    throw new Error("DB_CONNECTION_STRING is not set");
+}
+
+(async () => {
+    try {
+        await mongoose.connect(DB_CONNECTION_STRING);
+
+        const db = mongoose.connection.db;
+        if (!db) {
+            throw new Error("Could not connect to database");
+        }
+
+        const result = await db.collection("lessons").updateMany(
+            { type: "quiz" },
+            {
+                $set: {
+                    requiresEnrollment: true,
+                },
+            },
+        );
+
+        console.log(
+            `✅ Updated quiz lessons. Matched: ${result.matchedCount}, Modified: ${result.modifiedCount}`,
+        );
+    } finally {
+        await mongoose.connection.close();
+    }
+})();