Support MFA recovery tokens

app/controllers/auth/MFA.controller.js

@@ -54,6 +54,23 @@ class MFAController extends Controller {
             ...this.Vue.session(req),
         })
     }
+
+    async get_recovery(req, res, next) {
+        if (
+            !req.user.mfa_enabled
+            || !Array.isArray(req.user.mfa_token.recovery_codes)
+            || req.user.mfa_token.recovery_codes.length < 1
+        ) return this.Vue.auth_message(res, {
+            message: 'Unfortunately, it looks like your account does not have any MFA recovery codes generated.',
+            next_destination: '/auth/mfa/challenge',
+            button_text: 'Go Back',
+        })
+
+        return res.page('auth:mfa:recovery', {
+            ...this.Vue.data(),
+            ...this.Vue.session(req),
+        })
+    }
 }
 
 module.exports = exports = MFAController