feat: add redirection route

makes using quetre more convenient

README.md

@@ -147,7 +147,7 @@ From [their privacy policy](https://www.quora.com/about/privacy)
 
 - How do I use this?
 
-  Replace 'www.quora.com' in any URL with 'quetre.iket.me'. So, 'https://www.quora.com/Are-Nubians-nilotes' becomes 'https://quetre.iket.me/Are-Nubians-nilotes'.
+  Replace 'www.quora.com' in any URL with 'quetre.iket.me'(or any other instance). So, 'https://www.quora.com/Are-Nubians-nilotes' becomes 'https://quetre.iket.me/Are-Nubians-nilotes'.
 
 - I don't want to edit the URLs manually!
 
@@ -239,10 +239,10 @@ Following extensions can be used to automatically redirect Quora URLs to Quetre:
   ```
   Description: Quora to Quetre
   Example URL: https://www.quora.com/What-is-Linux-4?share=1
-  Include pattern: https?:\/\/(www\.)?quora\.com\/([^\?]*)
-  Redirect to: https://quetre.iket.me/$2
+  Include pattern: (https:\/\/.{2,}\.quora\.com\/.*)
+  Redirect to: https://quetre.iket.me/redirect/$1
   Pattern type: Regular Expression
-  Pattern description: redirects all Quora urls(excluding language-specific and spaces) to Quetre
+  Pattern description: redirects all Quora urls to Quetre
   ```
 
   This config should output:  
@@ -251,6 +251,13 @@ Following extensions can be used to automatically redirect Quora URLs to Quetre:
 - [LibRedirect](https://github.com/libredirect/libredirect/)  
   Redirects many popular services to their alternative front-ends. Has a ton of features and an active community. Quetre is supported by default. So, no need to do anything.
 
+- [Privacy Redirector](https://github.com/dybdeskarphet/privacy-redirector)  
+  A userscript that redirects popular social media platforms to their privacy respecting frontends.
+
+- Other addons with similar functionality:  
+  - [Dynamic Privacy Redirect](https://github.com/PrivacyDevel/DPR-addon)
+  - [Alter](https://github.com/w3bdev1/alter)
+
 ### Other alternative front-ends
 
 - [digitalblossom/alternative-frontends](https://github.com/digitalblossom/alternative-frontends): contains other alternative front-ends.

controllers/viewController.js

@@ -108,6 +108,25 @@ export const search = catchAsyncErrors(async (req, res, next) => {
   });
 });
 
+const regex = /^https:\/\/(.{2,})\.quora\.com(\/.*)$/; // local helper constant
+export const redirect = (req, res, next) => {
+  const url = req.originalUrl.replace('/redirect/', ''); // removing `/redirect/` part.
+  const match = regex.exec(url);
+
+  if (!match) return res.redirect('/');
+
+  const [_, subdomain, rest] = match; // eg: subdomain: 'es', rest: '/topic/linux?share=1'
+  let link;
+
+  if (acceptedLanguages.includes(subdomain))
+    // adding lang param
+    link = `${rest}${rest.includes('?') ? '&' : '?'}lang=${subdomain}`;
+  else if (subdomain === 'www') link = rest; // doing nothing
+  else link = `/space/${subdomain}${rest}`; // gotta be a space url.
+
+  return res.redirect(link);
+};
+
 export const unimplemented = (req, res, next) => {
   const data = {
     message: "This route isn't yet implemented. Check back sometime later!",

routes/viewRoutes.js

@@ -7,6 +7,7 @@ import {
   unimplemented,
   profile,
   search,
+  redirect,
 } from '../controllers/viewController.js';
 
 const viewRouter = express.Router();
@@ -20,5 +21,6 @@ viewRouter.get('/unanswered/:slug', answers);
 viewRouter.get('/space/:name', unimplemented);
 viewRouter.get('/space/:name/:slug', unimplemented);
 viewRouter.get('/:slug', answers);
+viewRouter.get('/redirect/*', redirect); // eg: /redirect/https://www.quora.com/topic/linux
 
 export default viewRouter;