[ADF-967] evaluate "hostname" and "port" for string settings (#2040)

* evaluate 'hostname' and 'port' in app config strings

* update unit tests

* fix unit tests

* fix unit tests

* update readme

ng2-components/ng2-alfresco-core/README.md

@@ -354,6 +354,27 @@ if (process.env.ENV === 'production') {
 })
 ```
 
+### Variable substitution in configuration strings
+
+The `AppConfigService` also supports a limited set of variable substitutions to greatly simplify certain scenarios. 
+
+```json
+{
+    "ecmHost": "http://{hostname}:{port}/ecm",
+    "bpmHost": "http://{hostname}:{port}/bpm",
+    "application": {
+        "name": "Alfresco"
+    }
+}
+```
+
+The supported variables are:
+
+| Variable name | Runtime value |
+| --- | --- |
+| hostname | `location.hostname` |
+| port | `location.port` |
+
 ## Notification Service
 
 The Notification Service is implemented on top of the Angular 2 Material Design snackbar.

ng2-components/ng2-alfresco-core/src/services/alfresco-content.service.spec.ts

@@ -83,7 +83,7 @@ describe('AlfrescoContentService', () => {
 
     it('should return a valid content URL', (done) => {
         authService.login('fake-username', 'fake-password').subscribe(() => {
-            expect(contentService.getContentUrl(node)).toBe('http://localhost:3000/ecm/alfresco/api/' +
+            expect(contentService.getContentUrl(node)).toBe('http://localhost:9876/ecm/alfresco/api/' +
                 '-default-/public/alfresco/versions/1/nodes/fake-node-id/content?attachment=false&alf_ticket=fake-post-ticket');
             done();
         });
@@ -98,7 +98,7 @@ describe('AlfrescoContentService', () => {
     it('should return a valid thumbnail URL', (done) => {
         authService.login('fake-username', 'fake-password').subscribe(() => {
             expect(contentService.getDocumentThumbnailUrl(node))
-                .toBe('http://localhost:3000/ecm/alfresco/api/-default-/public/alfresco' +
+                .toBe('http://localhost:9876/ecm/alfresco/api/-default-/public/alfresco' +
                     '/versions/1/nodes/fake-node-id/renditions/doclib/content?attachment=false&alf_ticket=fake-post-ticket');
             done();
         });

ng2-components/ng2-alfresco-core/src/services/app-config.service.ts

@@ -23,8 +23,8 @@ import { ObjectUtils } from '../utils/object-utils';
 export class AppConfigService {
 
     private config: any = {
-        'ecmHost': 'http://localhost:3000/ecm',
-        'bpmHost': 'http://localhost:3000/bpm',
+        'ecmHost': 'http://{hostname}:{port}/ecm',
+        'bpmHost': 'http://{hostname}:{port}/bpm',
         'application': {
             'name': 'Alfresco'
         }
@@ -35,7 +35,14 @@ export class AppConfigService {
     constructor(private http: Http) {}
 
     get<T>(key: string): T {
-        return <T> ObjectUtils.getValue(this.config, key);
+        let result: any = ObjectUtils.getValue(this.config, key);
+        if (typeof result === 'string') {
+            const map = new Map<string, string>();
+            map.set('hostname', location.hostname);
+            map.set('port', location.port);
+            result = this.formatString(result, map);
+        }
+        return <T> result;
     }
 
     load(resource: string = 'app.config.json'): Promise<any> {
@@ -54,6 +61,17 @@ export class AppConfigService {
             );
         });
     }
+
+    private formatString(str: string, map: Map<string, string>): string {
+        let result = str;
+
+        map.forEach((value, key) => {
+            const expr = new RegExp('{' + key + '}', 'gm');
+            result = result.replace(expr, value);
+        });
+
+        return result;
+    }
 }
 
 export function InitAppConfigServiceProvider(resource: string): any {

ng2-components/ng2-alfresco-core/src/services/renditions.service.spec.ts

@@ -71,7 +71,7 @@ describe('RenditionsService', () => {
     it('Create redition service should call the server with the ID passed and the asked encoding', (done) => {
         service.createRendition('fake-node-id', 'pdf').subscribe((res) => {
             expect(jasmine.Ajax.requests.mostRecent().method).toBe('POST');
-            expect(jasmine.Ajax.requests.mostRecent().url).toBe('http://localhost:3000/ecm/alfresco/api/-default-/public/alfresco/versions/1/nodes/fake-node-id/renditions');
+            expect(jasmine.Ajax.requests.mostRecent().url).toBe('http://localhost:9876/ecm/alfresco/api/-default-/public/alfresco/versions/1/nodes/fake-node-id/renditions');
             done();
         });
 
@@ -88,7 +88,7 @@ describe('RenditionsService', () => {
             service.convert('fake-node-id', 'pdf', 1000);
 
             expect(jasmine.Ajax.requests.mostRecent().method).toBe('POST');
-            expect(jasmine.Ajax.requests.mostRecent().url).toBe('http://localhost:3000/ecm/alfresco/api/-default-/public/alfresco/versions/1/nodes/fake-node-id/renditions');
+            expect(jasmine.Ajax.requests.mostRecent().url).toBe('http://localhost:9876/ecm/alfresco/api/-default-/public/alfresco/versions/1/nodes/fake-node-id/renditions');
             done();
         });
     });