Make GroupService keep the list of members up to date.

lib/db/api.js

@@ -30,6 +30,12 @@ dbapi.loadUser = function(email) {
   return db.run(r.table('users').get(email))
 }
 
+dbapi.loadGroupMembers = function(email) {
+  return db.run(r.table('devices').getAll(email, {
+      index: 'ownerEmail'
+    })('serial'))
+}
+
 dbapi.saveDeviceLog = function(serial, entry) {
   return db.run(r.table('logs').insert({
     serial: entry.serial

lib/db/tables.js

@@ -4,6 +4,11 @@ module.exports = {
   }
 , devices: {
     primaryKey: 'serial'
+  , indexes: {
+      ownerEmail: function(device) {
+        return device('owner')('email')
+      }
+    }
   }
 , logs: {
     primaryKey: 'id'

lib/roles/app.js

@@ -101,6 +101,27 @@ module.exports = function(options) {
     })
   })
 
+  app.get('/api/v1/group', function(req, res) {
+    dbapi.loadGroupMembers(req.user.email)
+      .then(function(cursor) {
+        return Promise.promisify(cursor.toArray, cursor)()
+          .then(function(list) {
+            res.json({
+              success: true
+            , group: {
+                members: list
+              }
+            })
+          })
+      })
+      .catch(function(err) {
+        log.error('Failed to load group: ', err.stack)
+        res.json(500, {
+          success: false
+        })
+      })
+  })
+
   app.get('/api/v1/devices', function(req, res) {
     dbapi.loadDevices()
       .then(function(cursor) {

res/app/scripts/services/GroupService.js

@@ -1,9 +1,18 @@
 define(['./_module', 'lodash'], function(app, _) {
-  function GroupServiceFactory($rootScope, socket, userService) {
+  function GroupServiceFactory($rootScope, $http, socket, userService) {
     var groupService = {
-      members: []
     }
 
+    groupService.group = (function() {
+      var groupPromise = $http.get('/api/v1/group')
+        .then(function(response) {
+          return response.data.group
+        })
+      return function() {
+        return groupPromise
+      }
+    })()
+
     userService.user().then(function(user) {
       function ownerFilter(listener) {
         return function(data) {
@@ -14,20 +23,26 @@ define(['./_module', 'lodash'], function(app, _) {
       }
 
       socket.on('group.join', ownerFilter(function(data) {
-        groupService.members.push(data.serial)
-        console.log('group.join', data)
-        $rootScope.$digest()
+        groupService.group().then(function(group) {
+          group.members.push(data.serial)
+          console.log('group.join', data)
+          $rootScope.$digest()
+        })
       }))
 
       socket.on('group.leave', ownerFilter(function(data) {
-        _.pull(groupService.members, data.serial)
-        console.log('group.leave', data)
-        $rootScope.$digest()
+        groupService.group().then(function(group) {
+          _.pull(group.members, data.serial)
+          console.log('group.leave', data)
+          $rootScope.$digest()
+        })
       }))
 
       socket.on('device.absent', /* unfiltered */ function(data) {
-        _.pull(groupService.members, data.serial)
-        $rootScope.$digest()
+        groupService.group().then(function(group) {
+          _.pull(group.members, data.serial)
+          $rootScope.$digest()
+        })
       })
     })
 
@@ -48,6 +63,7 @@ define(['./_module', 'lodash'], function(app, _) {
 
   app.factory('GroupService'
   , [ '$rootScope'
+    , '$http'
     , 'SocketService'
     , 'UserService'
     , GroupServiceFactory