first commit

calcom/apps/api/v1/lib/helpers/checkIsInMaintenanceMode.ts

@@ -0,0 +1,23 @@
+import { get } from "@vercel/edge-config";
+import type { NextMiddleware } from "next-api-middleware";
+
+const safeGet = async <T = unknown>(key: string): Promise<T | undefined> => {
+  try {
+    return get<T>(key);
+  } catch (error) {
+    // Don't crash if EDGE_CONFIG env var is missing
+  }
+};
+
+export const config = { matcher: "/:path*" };
+
+export const checkIsInMaintenanceMode: NextMiddleware = async (req, res, next) => {
+  const isInMaintenanceMode = await safeGet<boolean>("isInMaintenanceMode");
+  if (isInMaintenanceMode) {
+    return res
+      .status(503)
+      .json({ message: "API is currently under maintenance. Please try again at a later time." });
+  }
+
+  await next();
+};