convert reddit.com links to instance domain

config.js.template

@@ -40,6 +40,12 @@ const config = {
     shorts: 60 * 60 * 24 * 31,
     wikis: 60* 60 * 24 * 7
   },
+  convert_urls: {
+    /**
+    * When enabled, all the domains in the content (e.g. comments, sidebars, wikis etc.) will be replaced with a privacy respecting version.
+    */
+    reddit: true, // old.reddit.com and reddit.com --> instance domain (config.domain)
+  },
   valid_media_domains: ['preview.redd.it', 'external-preview.redd.it', 'i.redd.it', 'v.redd.it', 'a.thumbs.redditmedia.com', 'b.thumbs.redditmedia.com', 'emoji.redditmedia.com', 'thumbs.gfycat.com', 'i.ytimg.com'],
   reddit_api_error_text: `Seems like your instance is either blocked (e.g. due to API rate limiting), reddit is currently down, or your API key is expired and not renewd properly. This can also happen for other reasons.`
 };

inc/commons.js

@@ -125,12 +125,15 @@ module.exports = function(request, fs) {
   }
 
   this.toUTCString = (time) => {
-    let d = new Date();
+    let d = new Date()
-    d.setTime(time*1000);
+    d.setTime(time*1000)
-    return d.toUTCString();
+    return d.toUTCString()
   }
 
   this.unescape = (s) => {
+    /* It would make much more sense to rename this function to something
+    * like "formatter".
+    */
     if(s) {
       var re = /&(?:amp|#38|lt|#60|gt|#62|apos|#39|quot|#34);/g;
       var unescaped = {
@@ -145,9 +148,18 @@ module.exports = function(request, fs) {
         '"': '"',
         '"': '"'
       }
+      if(config.convert_urls.reddit) {
+        let str = s.replace(re, (m) => {
+          return unescaped[m]
+        })
+        let r = new RegExp('((www|old)\.)?reddit.com', 'g')
+        let result = str.replace(r, config.domain)
+        return result
+      } else {
         return s.replace(re, (m) => {
           return unescaped[m]
         })
+      }
     } else {
       return ''
     }