TOSQUASH Continue refactoring with function

dashboard/src/app/els.service.ts

@@ -171,19 +171,20 @@ export class ElsService {
               },
               'size': ElsService.DEFAULT_SIZE
             }), {headers: this.headers})
-      .map(res => {
-        return res.json().hits.hits;
-      })
-      .map((hits: Array<any>) => {
-        if (hits.length < 1) {
-          console.info('No album "' + albumName + '" found.');
-          return undefined;
-        }
-        if (hits.length > 1) {
-          console.error('More than one album "' + albumName + '" found (' + hits.length + '), return the first.');
-        }
-        return hits[0]._source;
-      });
+      .map(res => this.responseToAlbum(res, albumName));
+  }
+
+  private responseToAlbum(res: Response, name: string): Album {
+    const hits = res.json().hits.hits;
+    if (hits.length < 1) {
+      console.info('No album "' + name + '" found.');
+      return undefined;
+    }
+    if (hits.length > 1) {
+      // TODO Cumul results
+      console.error('More than one album "' + name + '" found (' + hits.length + '), return the first.');
+    }
+    return hits[0]._source;
   }
 
   getArtist(artistName: string): Observable<Artist> {