Convert admin section controllers to ES6 modules

app/assets/javascripts/admin/controllers/admin-email-index.js.es6

@@ -0,0 +1,54 @@
+/**
+  This controller supports email functionality.
+
+  @class AdminEmailIndexController
+  @extends Discourse.Controller
+  @namespace Discourse
+  @module Discourse
+**/
+export default Discourse.Controller.extend({
+
+  /**
+    Is the "send test email" button disabled?
+
+    @property sendTestEmailDisabled
+  **/
+  sendTestEmailDisabled: Em.computed.empty('testEmailAddress'),
+
+  /**
+    Clears the 'sentTestEmail' property on successful send.
+
+    @method testEmailAddressChanged
+  **/
+  testEmailAddressChanged: function() {
+    this.set('sentTestEmail', false);
+  }.observes('testEmailAddress'),
+
+  actions: {
+    /**
+      Sends a test email to the currently entered email address
+
+      @method sendTestEmail
+    **/
+    sendTestEmail: function() {
+      this.setProperties({
+        sendingEmail: true,
+        sentTestEmail: false
+      });
+
+      var self = this;
+      Discourse.ajax("/admin/email/test", {
+        type: 'POST',
+        data: { email_address: this.get('testEmailAddress') }
+      }).then(function () {
+        self.set('sentTestEmail', true);
+      }).catch(function () {
+        bootbox.alert(I18n.t('admin.email.test_error'));
+      }).finally(function() {
+        self.set('sendingEmail', false);
+      });
+
+    }
+  }
+
+});