move group endpoint from app unit to api unit

lib/units/api/controllers/user.js

@@ -1,5 +1,14 @@
+var Promise = require('bluebird')
+
+var dbapi = require('../../../db/api')
+var logger = require('../../../util/logger')
+var datautil = require('../../../util/datautil')
+
+var log = logger.createLogger('api:contoller:user')
+
 module.exports = {
   getCurrentUser: getCurrentUser
+, getCurrentUserGroup: getCurrentUserGroup
 };
 
 function getCurrentUser(req, res) {
@@ -8,3 +17,25 @@ function getCurrentUser(req, res) {
   , user: req.user
   })
 }
+
+function getCurrentUserGroup(req, res) {
+  dbapi.loadGroup(req.user.email)
+    .then(function(cursor) {
+      return Promise.promisify(cursor.toArray, cursor)()
+        .then(function(list) {
+          list.forEach(function(device) {
+            datautil.normalize(device, req.user)
+          })
+          res.json({
+            success: true
+          , devices: list
+          })
+        })
+    })
+    .catch(function(err) {
+      log.error('Failed to load group: ', err.stack)
+      res.json(500, {
+        success: false
+      })
+    })
+}