update oauth2 to get contact information (#673)

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>
Co-authored-by: Karol Wrótniak <karol.wrotniak@droidsonroids.pl>

lib/units/auth/oauth2/index.js

@@ -8,6 +8,8 @@ var urlutil = require('../../../util/urlutil')
 var jwtutil = require('../../../util/jwtutil')
 var Strategy = require('./strategy')
 
+const dbapi = require('../../../db/api')
+
 module.exports = function(options) {
   var log = logger.createLogger('auth-oauth2')
   var app = express()
@@ -16,6 +18,24 @@ module.exports = function(options) {
   app.set('strict routing', true)
   app.set('case sensitive routing', true)
 
+  app.get('/auth/contact', function(req, res) {
+    dbapi.getRootGroup().then(function(group) {
+      res.status(200)
+        .json({
+          success: true
+        , contact: group.owner
+        })
+    })
+    .catch(function(err) {
+      log.error('Unexpected error', err.stack)
+      res.status(500)
+        .json({
+          success: false
+        , error: 'ServerError'
+        })
+      })
+  })
+
   function verify(accessToken, refreshToken, profile, done) {
     done(null, profile)
   }