implement imgur replacement (#341)

inc/commons.js

@@ -194,6 +194,13 @@ module.exports = function(request, fs) {
     let twitterRegex = /(?<=href=")(https?:\/\/)(www\.)?twitter\.com(?=.+")/gm;
     let instagramRegex = /(?<=href=")(https?:\/\/)(www+\.)?instagram.com(?=.+")/gm;
     let quoraRegex = /(?<=href=")(https?:\/\/)([A-z.]+\.)?quora\.com(?=.+")/gm;
+    
+    /*
+     * regex pattern to replace imgur links (imgur.com, imgur.io, i.stack.imgur.com)
+     * source: https://github.com/libredirect/libredirect/blob/32c4a0211e3b721d46219c05cba93f1a42cf3773/src/config/config.json#L317
+     * license: GNU GPL v3 License -> https://github.com/libredirect/libredirect/blob/32c4a0211e3b721d46219c05cba93f1a42cf3773/LICENSE
+    */
+    let imgurRegex = /^https?:\/{2}([im]\.)?(stack\.)?imgur\.(com|io)/gm;
 
     let protocol = config.https_enabled || config.api_force_https ? 'https://' : 'http://'
 
@@ -264,6 +271,10 @@ module.exports = function(request, fs) {
     if(typeof(user_preferences.domain_quora) != 'undefined')
       if(user_preferences.domain_quora)
         str = str.replace(quoraRegex, protocol + user_preferences.domain_quora)
+
+    if(typeof(user_preferences.domain_imgur) != 'undefined')
+      if(user_preferences.domain_imgur)
+        str = str.replace(imgurRegex, protocol + user_preferences.domain_imgur)
     
     return str
   }

routes/overides.js

@@ -110,6 +110,15 @@ overridingRoutes.all('*', (req, res, next) => {
     });
   }
 
+  let domainImgur = req.query.domain_imgur;
+  if (domainImgur) {
+    req.cookies.domain_imgur = domainImgur;
+    res.cookie('domain_imgur', domainImgur, {
+      maxAge: 31536000,
+      httpOnly: true,
+    });
+  }
+
   let videosMuted = req.query.videos_muted;
   if (videosMuted) {
     req.cookies.videos_muted = videosMuted;

routes/preferences.js

@@ -16,6 +16,7 @@ function resetPreferences(res) {
   res.clearCookie('domain_youtube');
   res.clearCookie('domain_instagram');
   res.clearCookie('domain_quora');
+  res.clearCookie('domain_imgur');
   res.clearCookie('videos_muted');
   res.clearCookie('prefer_frontpage');
   res.clearCookie('show_large_gallery_images');
@@ -94,6 +95,7 @@ preferenceRoutes.post('/saveprefs', (req, res, next) => {
   let domain_youtube = req.body.domain_youtube;
   let domain_instagram = req.body.domain_instagram;
   let domain_quora = req.body.domain_quora;
+  let domain_imgur = req.body.domain_imgur;
   let videos_muted = req.body.videos_muted;
   let prefer_frontpage = req.body.prefer_frontpage;
   let show_large_gallery_images = req.body.show_large_gallery_images;
@@ -178,6 +180,10 @@ preferenceRoutes.post('/saveprefs', (req, res, next) => {
     maxAge: 365 * 24 * 60 * 60 * 1000,
     httpOnly: true,
   });
+  res.cookie('domain_imgur', domain_imgur, {
+    maxAge: 365 * 24 * 60 * 60 * 1000,
+    httpOnly: true,
+  });
 
   if (prefer_frontpage === 'on') prefer_frontpage = 'true';
   res.cookie('prefer_frontpage', prefer_frontpage, {

views/preferences.pug

@@ -37,6 +37,12 @@ html
                 input(type="text", name="domain_quora", id="domain_quora", value="" + user_preferences.domain_quora + "", placeholder="e.g. quetre.iket.me")
               else
                 input(type="text", name="domain_quora", id="domain_quora", placeholder="e.g. quetre.iket.me")
+          .setting
+            label(for="domain_imgur") Replace Imgur links with Rimgo (blank to disable): 
+              if(user_preferences.domain_imgur != '' && typeof(user_preferences.domain_imgur) != 'undefined')
+                input(type="text", name="domain_imgur", id="domain_imgur", value="" + user_preferences.domain_imgur + "", placeholder="e.g. rimgo.bcow.xyz")
+              else
+                input(type="text", name="domain_imgur", id="domain_imgur", placeholder="e.g. rimgo.bcow.xyz")
           legend Display
           .setting
             label(for="theme") Theme: