refactor(web): asset interaction (#14662)

* refactor(web): asset interaction

* feedback

web/src/lib/stores/asset-interaction.svelte.spec.ts

@@ -0,0 +1,40 @@
+import { AssetInteraction } from '$lib/stores/asset-interaction.svelte';
+import { resetSavedUser, user } from '$lib/stores/user.store';
+import { assetFactory } from '@test-data/factories/asset-factory';
+import { userAdminFactory } from '@test-data/factories/user-factory';
+
+describe('AssetInteraction', () => {
+  let assetInteraction: AssetInteraction;
+
+  beforeEach(() => {
+    assetInteraction = new AssetInteraction();
+  });
+
+  it('calculates derived values from selection', () => {
+    assetInteraction.selectAsset(assetFactory.build({ isFavorite: true, isArchived: true, isTrashed: true }));
+    assetInteraction.selectAsset(assetFactory.build({ isFavorite: true, isArchived: false, isTrashed: false }));
+
+    expect(assetInteraction.selectionActive).toBe(true);
+    expect(assetInteraction.isAllTrashed).toBe(false);
+    expect(assetInteraction.isAllArchived).toBe(false);
+    expect(assetInteraction.isAllFavorite).toBe(true);
+  });
+
+  it('updates isAllUserOwned when the active user changes', () => {
+    const [user1, user2] = userAdminFactory.buildList(2);
+    assetInteraction.selectAsset(assetFactory.build({ ownerId: user1.id }));
+
+    const cleanup = $effect.root(() => {
+      expect(assetInteraction.isAllUserOwned).toBe(false);
+
+      user.set(user1);
+      expect(assetInteraction.isAllUserOwned).toBe(true);
+
+      user.set(user2);
+      expect(assetInteraction.isAllUserOwned).toBe(false);
+    });
+
+    cleanup();
+    resetSavedUser();
+  });
+});