Move old backend code to old_src folder

Signed-off-by: David Mehren <git@herrmehren.de>

old_src/lib/web/auth/twitter/index.ts

@@ -0,0 +1,33 @@
+import { Router } from 'express'
+import passport from 'passport'
+import { Strategy as TwitterStrategy } from 'passport-twitter'
+
+import { config } from '../../../config'
+import { passportGeneralCallback } from '../utils'
+import { AuthMiddleware } from '../interface'
+
+export const TwitterMiddleware: AuthMiddleware = {
+  getMiddleware (): Router {
+    const TwitterAuth = Router()
+
+    passport.use(new TwitterStrategy({
+      consumerKey: config.twitter.consumerKey,
+      consumerSecret: config.twitter.consumerSecret,
+      callbackURL: config.serverURL + '/auth/twitter/callback'
+    }, passportGeneralCallback))
+
+    TwitterAuth.get('/auth/twitter', function (req, res, next) {
+      passport.authenticate('twitter')(req, res, next)
+    })
+
+    // twitter auth callback
+    TwitterAuth.get('/auth/twitter/callback',
+      passport.authenticate('twitter', {
+        successReturnToOrRedirect: config.serverURL + '/',
+        failureRedirect: config.serverURL + '/'
+      })
+    )
+
+    return TwitterAuth
+  }
+}