Url Service: trigger url event with relative/absolute urls

refs https://github.com/TryGhost/Team/issues/65

- this is just the first optimisation regarding relative/absolute urls
- the full strike will happen when i start with the url utility re-write
- for now: there will be only one subscriber of url events -> the sitemaps service
- the sitemaps service outputs absolute urls
  - we don't want to receive an url event and ask the url service again to get an absolute version of the url

core/server/services/url/UrlGenerator.js

@@ -138,8 +138,6 @@ class UrlGenerator {
 
     /**
      * We currently generate relative urls.
-     *
-     * @TODO: reconsider? e.g. sitemaps would receive a relative url, but we show absolute urls
      */
     _generateUrl(resource) {
         let url = this.routingType.getPermalinks().getValue();

core/server/services/url/Urls.js

@@ -2,6 +2,7 @@
 
 const _ = require('lodash');
 const debug = require('ghost-ignition').debug('services:url:urls');
+const localUtils = require('./utils');
 const common = require('../../lib/common');
 
 /**
@@ -9,6 +10,8 @@ const common = require('../../lib/common');
  * Each resource has exactly one url.
  *
  * Connector for url generator and resources.
+ *
+ * Stores relative urls by default.
  */
 class Urls {
     constructor() {
@@ -38,11 +41,15 @@ class Urls {
         };
 
         common.events.emit('url.added', {
-            url: url,
+            url: {
+                relative: url,
+                absolute: localUtils.createUrl(url, true)
+            },
             resource: resource
         });
     }
 
+    // @TODO: add an option to receive an absolute url
     getByResourceId(id) {
         return this.urls[id];
     }

core/test/unit/services/url/Urls_spec.js

@@ -47,8 +47,8 @@ describe('Unit: services/url/Urls', function () {
         });
 
         eventsToRemember = {};
-        sandbox.stub(common.events, 'emit').callsFake(function (eventName, callback) {
-            eventsToRemember[eventName] = callback;
+        sandbox.stub(common.events, 'emit').callsFake(function (eventName, data) {
+            eventsToRemember[eventName] = data;
         });
     });
 
@@ -69,6 +69,11 @@ describe('Unit: services/url/Urls', function () {
         });
 
         should.exist(eventsToRemember['url.added']);
+        eventsToRemember['url.added'].url.absolute.should.eql('http://127.0.0.1:2369/test/');
+        eventsToRemember['url.added'].url.relative.should.eql('/test/');
+        should.exist(eventsToRemember['url.added'].resource);
+        should.exist(eventsToRemember['url.added'].resource.data);
+
         urls.getByResourceId('object-id-x').resource.data.slug.should.eql('a');
 
         // add duplicate