40416: small fixes and thumbnails

src/app/core/shared/item.model.ts

@@ -3,42 +3,62 @@ import { DSpaceObject } from "./dspace-object.model";
 import { Collection } from "./collection.model";
 import { RemoteData } from "../data/remote-data";
 import { Bundle } from "./bundle.model";
+import { Bitstream } from "./bitstream.model";
+import { Observable } from "rxjs";
 
 @inheritSerialization(DSpaceObject)
 export class Item extends DSpaceObject {
 
-  /**
-   * A string representing the unique handle of this Item
-   */
-  @autoserialize
-  handle: string;
+    /**
+     * A string representing the unique handle of this Item
+     */
+    @autoserialize
+    handle: string;
 
-  /**
-   * The Date of the last modification of this Item
-   */
-  lastModified: Date;
+    /**
+     * The Date of the last modification of this Item
+     */
+    lastModified: Date;
 
-  /**
-   * A boolean representing if this Item is currently archived or not
-   */
-  isArchived: boolean;
+    /**
+     * A boolean representing if this Item is currently archived or not
+     */
+    isArchived: boolean;
 
-  /**
-   * A boolean representing if this Item is currently withdrawn or not
-   */
-  isWithdrawn: boolean;
+    /**
+     * A boolean representing if this Item is currently withdrawn or not
+     */
+    isWithdrawn: boolean;
 
-  /**
-   * An array of Collections that are direct parents of this Item
-   */
-  @autoserializeAs(Collection)
-  parents: Array<Collection>;
+    /**
+     * An array of Collections that are direct parents of this Item
+     */
+    @autoserializeAs(Collection)
+    parents: Array<Collection>;
 
-  /**
-   * The Collection that owns this Item
-   */
-  owner: Collection;
+    /**
+     * The Collection that owns this Item
+     */
+    owner: Collection;
 
-  bundles: Array<RemoteData<Bundle>>
+    bundles: Array<RemoteData<Bundle>>;
+
+    getThumbnail(): Observable<Bitstream> {
+        const bundle: Observable<Bundle> = this.getBundle("THUMBNAIL");
+        return bundle.flatMap(
+            b => b.primaryBitstream.payload
+        );
+    }
+
+    getBundle(name: String): Observable<Bundle> {
+        return Observable.combineLatest(
+            ...this.bundles.map(b => b.payload),
+            (...bundles: Array<Bundle>) => bundles)
+            .map(bundles => {
+                return bundles.find((bundle: Bundle) => {
+                    return bundle.name === name
+                });
+            });
+    }
 
 }