Move old backend code to old_src folder

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

old_src/lib/web/auth/oauth2/index.ts

@@ -0,0 +1,36 @@
+import { Router } from 'express'
+import passport from 'passport'
+
+import { OAuth2CustomStrategy } from './oauth2-custom-strategy'
+import { config } from '../../../config'
+import { passportGeneralCallback } from '../utils'
+import { AuthMiddleware } from '../interface'
+
+export const OAuth2Middleware: AuthMiddleware = {
+  getMiddleware (): Router {
+    const OAuth2Auth = Router()
+
+    passport.use(new OAuth2CustomStrategy({
+      authorizationURL: config.oauth2.authorizationURL,
+      tokenURL: config.oauth2.tokenURL,
+      clientID: config.oauth2.clientID,
+      clientSecret: config.oauth2.clientSecret,
+      callbackURL: config.serverURL + '/auth/oauth2/callback',
+      userProfileURL: config.oauth2.userProfileURL,
+      scope: config.oauth2.scope,
+      state: true
+    }, passportGeneralCallback))
+
+    OAuth2Auth.get('/auth/oauth2', passport.authenticate('oauth2'))
+
+    // github auth callback
+    OAuth2Auth.get('/auth/oauth2/callback',
+      passport.authenticate('oauth2', {
+        successReturnToOrRedirect: config.serverURL + '/',
+        failureRedirect: config.serverURL + '/'
+      })
+    )
+
+    return OAuth2Auth
+  }
+}