Add force SSL check.

hooks/useForceSSL.js

@@ -0,0 +1,14 @@
+import { useEffect } from 'react';
+import { useRouter } from 'next/router';
+
+export default function useForceSSL(enabled) {
+  const router = useRouter();
+
+  useEffect(() => {
+    if (enabled && typeof window !== 'undefined' && /^http:\/\//.test(location.href)) {
+      router.push(location.href.replace(/^http:\/\//, 'https://'));
+    }
+  }, [enabled]);
+
+  return null;
+}