VSB-TUO/Display total downloads for each item

src/app/core/statistics/models/usage-report.model.ts

@@ -47,5 +47,6 @@ export interface Point {
   type: string;
   values: {
     views: number;
-  }[];
+    [key: string]: number;
+  };
 }

src/app/item-page/item-page.module.ts

@@ -57,6 +57,7 @@ import { ItemAlertsComponent } from './alerts/item-alerts.component';
 import { ItemVersionsModule } from './versions/item-versions.module';
 import { BitstreamRequestACopyPageComponent } from './bitstreams/request-a-copy/bitstream-request-a-copy-page.component';
 import { FileSectionComponent } from './simple/field-components/file-section/file-section.component';
+import { TotalDownloadsComponent } from './simple/field-components/file-section/total-downloads.component';
 import { ItemSharedModule } from './item-shared.module';
 import { DsoPageModule } from '../shared/dso-page/dso-page.module';
 import { ThemedItemAlertsComponent } from './alerts/themed-item-alerts.component';
@@ -90,6 +91,7 @@ import { ClarinIdentifierItemFieldComponent } from './simple/field-components/cl
 import { ClarinDateItemFieldComponent } from './simple/field-components/clarin-date-item-field/clarin-date-item-field.component';
 import { ClarinDescriptionItemFieldComponent } from './simple/field-components/clarin-description-item-field/clarin-description-item-field.component';
 import { ClarinFilesSectionComponent } from './clarin-files-section/clarin-files-section.component';
+import { UsageReportDataService } from '../core/statistics/usage-report-data.service';
 
 const ENTRY_COMPONENTS = [
   // put only entry components that use custom decorator
@@ -99,6 +101,7 @@ const ENTRY_COMPONENTS = [
 
 const DECLARATIONS = [
   FileSectionComponent,
+  TotalDownloadsComponent,
   ThemedFileSectionComponent,
   ItemPageComponent,
   ThemedItemPageComponent,
@@ -181,6 +184,9 @@ const DECLARATIONS = [
   ],
   exports: [
     ...DECLARATIONS,
+  ],
+  providers: [
+    UsageReportDataService,
   ]
 })
 export class ItemPageModule {

src/app/item-page/simple/field-components/file-section/total-downloads.component.html

@@ -0,0 +1,7 @@
+<ds-metadata-field-wrapper [label]="downloadsLabel | translate">
+  <div class="total-downloads-section">
+    <div class="total-downloads-count">
+      <span>{{ totalDownloads }}</span>
+    </div>
+  </div>
+</ds-metadata-field-wrapper>

src/app/item-page/simple/field-components/file-section/total-downloads.component.ts

@@ -0,0 +1,73 @@
+import { Component, OnInit, Input } from '@angular/core';
+import { UsageReportDataService } from 'src/app/core/statistics/usage-report-data.service';
+import { catchError } from 'rxjs/operators';
+import { of } from 'rxjs';
+
+/**
+ * Component that displays the total number of downloads for all bitstreams within a DSpace item.
+ *
+ * This component fetches download statistics for a given item using its UUID and aggregates
+ * the download counts from all bitstreams associated with that item. The result is displayed
+ * as a single total download count.
+ */
+@Component({
+  selector: 'ds-total-downloads',
+  templateUrl: './total-downloads.component.html',
+  styleUrls: ['./total-downloads.component.scss']
+})
+export class TotalDownloadsComponent implements OnInit {
+
+  /**
+   * The UUID of the DSpace item for which to fetch download statistics.
+   */
+  @Input() itemUuid!: string;
+
+  /**
+   * The total number of downloads across all bitstreams for the item.
+   * Defaults to 0 and will show 0 if no data is available or an error occurs.
+   */
+  totalDownloads: number = 0;
+
+  /**
+   * The translation key for the downloadsLabel displayed alongside the download count.
+   */
+  readonly downloadsLabel = 'item.page.files.downloads';
+
+
+  constructor(private usageReportDataService: UsageReportDataService) { }
+
+  /**
+   * Fetches the total download statistics for the item specified by itemUuid.
+   * The component will:
+   * 1. Call the UsageReportDataService with the item UUID and 'TotalDownloads' report type
+   * 2. Aggregate all download counts (views) from all bitstreams in the response
+   * 3. Set the totalDownloads property with the sum
+   * 4. Handle errors gracefully by setting totalDownloads to 0 and logging the error
+   *
+   * @throws Will log an error to console if the API call fails, but won't throw an exception
+   */
+  ngOnInit(): void {
+    if (!this.itemUuid) {
+      return;
+    }
+
+    const reportType = 'TotalDownloads';
+    this.usageReportDataService.getStatistic(this.itemUuid, reportType)
+      .pipe(
+        catchError(error => {
+          console.error('Failed to fetch total downloads statistics:', error);
+          return of(null);
+        })
+      )
+      .subscribe(report => {
+        if (report) {
+          this.totalDownloads = report.points.reduce((total, point) => {
+            const views = point.values.views || 0;
+            return total + views;
+          }, 0);
+        } else {
+          this.totalDownloads = 0; // Show 0 instead of null when no data is available
+        }
+      });
+  }
+}

src/app/item-page/simple/item-types/publication/publication.component.html

@@ -23,7 +23,8 @@
     <div *ngIf="mediaViewer.image || mediaViewer.video" class="mb-2">
       <ds-themed-media-viewer [item]="object"></ds-themed-media-viewer>
     </div>
-<ds-themed-item-page-file-section [item]="object"></ds-themed-item-page-file-section>
+    <ds-themed-item-page-file-section [item]="object"></ds-themed-item-page-file-section>
+    <ds-total-downloads [itemUuid]="object.uuid"></ds-total-downloads>
     <ds-item-page-date-field [item]="object"></ds-item-page-date-field>
     <ds-themed-metadata-representation-list class="ds-item-page-mixed-author-field"
       [parentItem]="object"

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.html

@@ -24,7 +24,8 @@
     <div *ngIf="mediaViewer.image || mediaViewer.video" class="mb-2">
       <ds-themed-media-viewer [item]="object"></ds-themed-media-viewer>
     </div>
- <ds-themed-item-page-file-section [item]="object"></ds-themed-item-page-file-section>
+    <ds-themed-item-page-file-section [item]="object"></ds-themed-item-page-file-section>
+    <ds-total-downloads [itemUuid]="object.uuid"></ds-total-downloads>
     <ds-item-page-date-field [item]="object"></ds-item-page-date-field>
     <ds-themed-metadata-representation-list class="ds-item-page-mixed-author-field"
       [parentItem]="object"

src/assets/i18n/cs.json5

@@ -3794,6 +3794,9 @@
   // "item.page.files": "Files",
   "item.page.files": "Soubory",
 
+  // "item.page.files.downloads": "Downloads",
+  "item.page.files.downloads": "Stažení",
+
   // "item.page.filesection.description": "Description:",
   "item.page.filesection.description": "Popis:",
 
@@ -11542,4 +11545,4 @@
 
   // "clarin-license-agreement-page.download-error": "An error occurred while downloading the file. Please try again later.",
   "clarin-license-agreement-page.download-error": "Při stahování souboru došlo k chybě. Zkuste to prosím znovu později.",
-}
+}

src/assets/i18n/en.json5

@@ -2529,6 +2529,8 @@
 
   "item.page.files": "Files",
 
+  "item.page.files.downloads": "Downloads",
+
   "item.page.filesection.description": "Description:",
 
   "item.page.filesection.download": "Download",
@@ -6220,4 +6222,4 @@
   "change.submitter.page.items.name.message": "Item's name: ",
 
   "clarin-license-agreement-page.download-error": "An error occurred while downloading the file. Please try again later.",
-}
+}