add adult websites detection with RTA label

Author: bdrtsky

src/index.js

@@ -54,7 +54,8 @@ module.exports = async function (originalUrl) {
     meta: {
       language: '',
       title: '',
-      description: ''
+      description: '',
+      isRtaLabel: false
     },
     vueVersion: null,
     hasSSR: false, // default
@@ -121,6 +122,11 @@ module.exports = async function (originalUrl) {
     infos.meta.description = await page.$eval('head > meta[property="og:description"]', element => element.content).catch(() => '')
   }
 
+  const rtaLabel = await page.$eval('head > meta[name="RATING"]', element => element.content).catch(() => '')
+  if (rtaLabel.trim() === 'RTA-5042-1996-1400-1577-RTA') {
+    infos.meta.isRtaLabel = true
+  }
+
   // Get page language
   const matches = html.match(new RegExp('<html[^>]*[: ]lang="([a-z]{2}((-|_)[A-Z]{2})?)"', 'i'));
   if (matches && matches.length) {