chore: Fix app

toju-app/src/app/domains/attachment/application/services/attachment-download.service.spec.ts

@@ -9,8 +9,15 @@ import {
 import { DOCUMENT } from '@angular/common';
 import { Injector, runInInjectionContext } from '@angular/core';
 
+const isCapacitorNativeRuntimeMock = vi.fn(() => false);
+
+vi.mock('../../../../infrastructure/mobile/logic/platform-detection.rules', () => ({
+  isCapacitorNativeRuntime: () => isCapacitorNativeRuntimeMock()
+}));
+
 import { AttachmentDownloadService } from './attachment-download.service';
 import { ElectronBridgeService } from '../../../../core/platform/electron/electron-bridge.service';
+import { CapacitorAttachmentExportService } from '../../infrastructure/services/capacitor-attachment-export.service';
 import type { Attachment } from '../../domain/models/attachment.model';
 
 describe('AttachmentDownloadService', () => {
@@ -21,8 +28,11 @@ describe('AttachmentDownloadService', () => {
   let documentStub: Document;
   let saveExistingFileAs: ReturnType<typeof vi.fn>;
   let saveFileAs: ReturnType<typeof vi.fn>;
+  let exportToDevice: ReturnType<typeof vi.fn>;
 
   beforeEach(() => {
+    isCapacitorNativeRuntimeMock.mockReturnValue(false);
+    exportToDevice = vi.fn(async () => true);
     saveExistingFileAs = vi.fn(async () => ({ saved: true, cancelled: false }));
     saveFileAs = vi.fn(async () => ({ saved: true, cancelled: false }));
 
@@ -53,6 +63,7 @@ describe('AttachmentDownloadService', () => {
       providers: [
         AttachmentDownloadService,
         { provide: ElectronBridgeService, useValue: electronBridge },
+        { provide: CapacitorAttachmentExportService, useValue: { exportToDevice } },
         { provide: DOCUMENT, useValue: documentStub }
       ]
     });
@@ -78,6 +89,28 @@ describe('AttachmentDownloadService', () => {
     expect(saveFileAs).not.toHaveBeenCalled();
   });
 
+  it('delegates to the Capacitor export service on a native mobile shell', async () => {
+    isCapacitorNativeRuntimeMock.mockReturnValue(true);
+    electronBridge.getApi = vi.fn(() => null);
+
+    const service = createService();
+    const attachment: Attachment = {
+      id: 'file-3',
+      messageId: 'message-3',
+      filename: 'photo.png',
+      mime: 'image/png',
+      size: 2048,
+      available: true,
+      savedPath: 'metoyou/server/room/files/photo.png'
+    };
+
+    await expect(service.downloadToUserLocation(attachment)).resolves.toBe(true);
+
+    expect(exportToDevice).toHaveBeenCalledWith(attachment);
+    expect(saveExistingFileAs).not.toHaveBeenCalled();
+    expect(saveFileAs).not.toHaveBeenCalled();
+  });
+
   it('does nothing when the attachment is not downloadable yet', async () => {
     const service = createService();
     const attachment: Attachment = {

toju-app/src/app/domains/attachment/application/services/attachment-download.service.ts

@@ -2,12 +2,15 @@ import { DOCUMENT } from '@angular/common';
 import { Injectable, inject } from '@angular/core';
 
 import { ElectronBridgeService } from '../../../../core/platform/electron/electron-bridge.service';
+import { isCapacitorNativeRuntime } from '../../../../infrastructure/mobile/logic/platform-detection.rules';
 import { canDownloadAttachment, resolveAttachmentDiskPath } from '../../domain/logic/attachment-download.rules';
 import type { Attachment } from '../../domain/models/attachment.model';
+import { CapacitorAttachmentExportService } from '../../infrastructure/services/capacitor-attachment-export.service';
 
 @Injectable({ providedIn: 'root' })
 export class AttachmentDownloadService {
   private readonly electronBridge = inject(ElectronBridgeService);
+  private readonly capacitorExport = inject(CapacitorAttachmentExportService);
   private readonly document = inject(DOCUMENT);
 
   async downloadToUserLocation(attachment: Attachment): Promise<boolean> {
@@ -15,6 +18,10 @@ export class AttachmentDownloadService {
       return false;
     }
 
+    if (isCapacitorNativeRuntime()) {
+      return this.capacitorExport.exportToDevice(attachment);
+    }
+
     const electronApi = this.electronBridge.getApi();
     const diskPath = resolveAttachmentDiskPath(attachment);