From 54622b54bb0056bf6c2b95409b329ff83c5ffbc8 Mon Sep 17 00:00:00 2001
From: Avris <andre@avris.it>
Date: Sat, 26 Jun 2021 00:51:43 +0200
Subject: [PATCH] [optim] dynamically disable ssr for browsers

---
 nuxt.config.js   |  2 +-
 server/no-ssr.js | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 server/no-ssr.js

diff --git a/nuxt.config.js b/nuxt.config.js
index 73bd4acd..9f8290e3 100644
--- a/nuxt.config.js
+++ b/nuxt.config.js
@@ -155,7 +155,7 @@ export default {
         BUCKET: `https://${process.env.AWS_S3_BUCKET}.s3-${process.env.AWS_REGION}.amazonaws.com`,
         STATS_FILE: process.env.STATS_FILE,
     },
-    serverMiddleware: ['~/server/index.js'],
+    serverMiddleware: ['~/server/no-ssr.js', '~/server/index.js'],
     axios: {
         baseURL: process.env.BASE_URL + '/api',
     },
diff --git a/server/no-ssr.js b/server/no-ssr.js
new file mode 100644
index 00000000..0f92f91c
--- /dev/null
+++ b/server/no-ssr.js
@@ -0,0 +1,17 @@
+const USER_AGENT_BOTS = /bot|crawler|baiduspider|80legs|ia_archiver|voyager|curl|wget|yahoo! slurp|mediapartners-google|facebookexternalhit|twitterbot|whatsapp|php|python/;
+const USER_AGENT_BROWSERS = /mozilla|msie|gecko|firefox|edge|opera|safari|netscape|konqueror|android/;
+
+const isBrowser = (userAgent) => {
+    if (!userAgent) {
+        return false;
+    }
+    const isProbablyBot = !!userAgent.toLowerCase().match(USER_AGENT_BOTS);
+    const isProbablyBrowser = !!userAgent.toLowerCase().match(USER_AGENT_BROWSERS);
+
+    return isProbablyBrowser || !isProbablyBot;
+}
+
+export default function(req, res, next) {
+    res.spa = isBrowser(req.headers['user-agent']);
+    next()
+}