Merged in DSC-1023 (pull request DSpace#578)

DSC-1023: Get Page title prefix from api

Author: enea4science

src/app/core/metadata/metadata.service.ts

@@ -19,7 +19,8 @@ import { Bitstream } from '../shared/bitstream.model';
 import { DSpaceObject } from '../shared/dspace-object.model';
 import { Item } from '../shared/item.model';
 import {
-  getFirstCompletedRemoteData,
+  debounceTimeWorkaround,
+  getFirstCompletedRemoteData, getFirstSucceededRemoteData,
   getFirstSucceededRemoteDataPayload
 } from '../shared/operators';
 import { RootDataService } from '../data/root-data.service';
@@ -40,6 +41,7 @@ import { getDownloadableBitstream } from '../shared/bitstream.operators';
 import { SchemaJsonLDService } from './schema-json-ld/schema-json-ld.service';
 import { ITEM } from '../shared/item.resource-type';
 import { isPlatformServer } from '@angular/common';
+import { Root } from '../data/root.model';
 
 /**
  * The base selector function to select the metaTag section in the store
@@ -120,12 +122,19 @@ export class MetadataService {
     }
 
     if (routeInfo.data.value.title) {
-      const titlePrefix = this.translate.get('repository.title.prefix');
+      const pageName$ = this.rootService.findRoot(true).pipe(
+        getFirstCompletedRemoteData(),
+        map((rootRD: RemoteData<Root>) => rootRD.payload.dspaceName),
+      );
+
       const title = this.translate.get(routeInfo.data.value.title, routeInfo.data.value);
-      combineLatest([titlePrefix, title]).pipe(take(1)).subscribe(([translatedTitlePrefix, translatedTitle]: [string, string]) => {
-        this.addMetaTag('title', translatedTitlePrefix + translatedTitle);
-        this.title.setTitle(translatedTitlePrefix + translatedTitle);
-      });
+      combineLatest([ pageName$, title ])
+        .pipe(take(1))
+        .subscribe(([ translatedTitlePrefix, translatedTitle ]: [ string, string ]) => {
+          let finalTitle = translatedTitlePrefix + ' :: ' + translatedTitle;
+          this.addMetaTag('title', finalTitle);
+          this.title.setTitle(finalTitle);
+        });
     }
     if (routeInfo.data.value.description) {
       this.translate.get(routeInfo.data.value.description).pipe(take(1)).subscribe((translatedDescription: string) => {