Settings for server default language

client/startup/startup.coffee

@@ -10,14 +10,17 @@ Meteor.startup ->
 	window.lastMessageWindow = {}
 	window.lastMessageWindowHistory = {}
 
-	@defaultUserLanguage = ->
+	@defaultAppLanguage = ->
 		lng = window.navigator.userLanguage || window.navigator.language || 'en'
 		# Fix browsers having all-lowercase language settings eg. pt-br, en-us
 		re = /([a-z]{2}-)([a-z]{2})/
 		if re.test lng
 			lng = lng.replace re, (match, parts...) -> return parts[0] + parts[1].toUpperCase()
 		return lng
 
+	@defaultUserLanguage = ->
+		return RocketChat.settings.get('Language') || defaultAppLanguage()
+
 	loadedLaguages = []
 
 	setLanguage = (language) ->
@@ -35,17 +38,14 @@ Meteor.startup ->
 				Function(localeFn)()
 				moment.locale(language)
 
-	Tracker.autorun (c) ->
-		if Meteor.user()?.language?
-			c.stop()
-
-			if localStorage.getItem('userLanguage') isnt Meteor.user().language
-				localStorage.setItem("userLanguage", Meteor.user().language)
-				setLanguage Meteor.user().language
-				if isRtl localStorage.getItem "userLanguage"
-					$('html').addClass "rtl"
+	Meteor.subscribe("userData", () ->
+		userLanguage = Meteor.user()?.language
+		userLanguage ?= defaultUserLanguage()
 
-	userLanguage = localStorage.getItem("userLanguage")
-	userLanguage ?= defaultUserLanguage()
+		if localStorage.getItem('userLanguage') isnt userLanguage
+			localStorage.setItem('userLanguage', userLanguage)
+			if isRtl localStorage.getItem 'userLanguage'
+				$('html').addClass "rtl"
 
-	setLanguage userLanguage
+		setLanguage userLanguage
+	)

packages/rocketchat-lib/server/startup/settings.coffee

@@ -72,6 +72,7 @@ RocketChat.settings.addGroup 'FileUpload', ->
 RocketChat.settings.addGroup 'General', ->
 	@add 'Site_Url', __meteor_runtime_config__?.ROOT_URL, { type: 'string', i18nDescription: 'Site_Url_Description', public: true }
 	@add 'Site_Name', 'Rocket.Chat', { type: 'string', public: true }
+	@add 'Language', '', { type: 'language', public: true }
 	@add 'Allow_Invalid_SelfSigned_Certs', false, { type: 'boolean' }
 	@add 'Disable_Favorite_Rooms', false, { type: 'boolean' }
 	@add 'CDN_PREFIX', '', { type: 'string' }

packages/rocketchat-ui-account/account/accountProfile.coffee

@@ -7,7 +7,7 @@ Template.accountProfile.helpers
 		return _.sortBy(result, 'key')
 
 	userLanguage: (key) ->
-		return (localStorage.getItem('userLanguage') or defaultUserLanguage())?.split('-').shift().toLowerCase() is key
+		return (localStorage.getItem('userLanguage') or Meteor.user().language or defaultUserLanguage())?.split('-').shift().toLowerCase() is key
 
 	realname: ->
 		return Meteor.user().name

packages/rocketchat-ui-admin/admin/admin.coffee

@@ -9,6 +9,25 @@
 
 
 Template.admin.helpers
+	languages: ->
+		languages = TAPi18n.getLanguages()
+		result = []
+		for key, language of languages
+			result.push _.extend(language, { key: key })
+		result = _.sortBy(result, 'key')
+		result.unshift {
+			"name": "Default",
+			"en": "Default",
+			"key": ""
+		}
+		return result;
+
+	appLanguage: (key) ->
+		if !key
+			return !RocketChat.settings.get('Language')
+		selected = (RocketChat.settings.get('Language'))?.split('-').shift().toLowerCase() is key
+		return selected
+
 	group: ->
 		group = FlowRouter.getParam('group')
 		group ?= TempSettings.findOne({ type: 'group' })?._id

packages/rocketchat-ui-admin/admin/admin.html

@@ -70,6 +70,14 @@ <h2>
 												</select>
 											{{/if}}
 
+											{{#if $eq type 'language'}}
+												<select class="input-monitor" name="{{_id}}" {{isDisabled}}>
+													{{#each languages}}
+													<option value="{{key}}" selected="{{appLanguage key}}" dir="auto">{{name}}</option>
+													{{/each}}
+												</select>
+											{{/if}}
+
 											{{#if $eq type 'color'}}
 												<input class="input-monitor minicolors" type="text" name="{{_id}}" value="{{value}}" {{isDisabled}}/>
 											{{/if}}

packages/rocketchat-ui-sidenav/side-nav/accountBox.coffee

@@ -36,6 +36,9 @@ Template.accountBox.events
 		user = Meteor.user()
 		Meteor.logout ->
 			FlowRouter.go 'home'
+			# remove userLanguage in localStorage
+			# in case of another account with different language login
+			localStorage.removeItem('userLanguage')
 			Meteor.call('logoutCleanUp', user)
 
 	'click #avatar': (event) ->