open as worspace implementation

src/workspace/useWorkspaceState.ts

@@ -23,6 +23,10 @@ export function createWorkspaceId(): string {
   return createId("workspace");
 }
 
+export function createPdfId(): string {
+  return createId('pdf');
+}
+
 export function defaultWorkspaceNameFromPdfName(pdfName: string): string {
   return pdfName.replace(/\.pdf$/i, "") || "Untitled workspace";
 }

src/workspace/workspaceSelection.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest';
+import type { PageRef } from '../pdf/pdfTypes';
+import {
+  createSelectionPdfName,
+  createSelectionWorkspaceName,
+  getSelectedPagesInVisualOrder,
+} from './workspaceSelection';
+
+function page(id: string, sourcePageIndex: number): PageRef {
+  return { id, sourcePageIndex, rotation: 0 };
+}
+
+describe('workspaceSelection', () => {
+  it('returns selected pages in current visual order', () => {
+    const pages = [page('page-3', 2), page('page-1', 0), page('page-2', 1)];
+
+    expect(getSelectedPagesInVisualOrder(pages, ['page-2', 'page-3'])).toEqual([
+      pages[0],
+      pages[2],
+    ]);
+  });
+
+  it('ignores selected ids that are no longer present', () => {
+    const pages = [page('page-1', 0), page('page-2', 1)];
+
+    expect(getSelectedPagesInVisualOrder(pages, ['missing', 'page-2'])).toEqual(
+      [pages[1]]
+    );
+  });
+
+  it('creates readable derived workspace and PDF names', () => {
+    expect(createSelectionWorkspaceName('contract.pdf', 3)).toBe(
+      'contract - 3-page-selection'
+    );
+    expect(createSelectionPdfName('contract.pdf', 1)).toBe(
+      'contract - 1-page-selection.pdf'
+    );
+  });
+});

src/workspace/workspaceSelection.ts

@@ -0,0 +1,31 @@
+import type { PageRef } from '../pdf/pdfTypes';
+
+export function getSelectedPagesInVisualOrder(
+  pages: PageRef[],
+  selectedPageIds: string[]
+): PageRef[] {
+  if (pages.length === 0 || selectedPageIds.length === 0) return [];
+
+  const selectedSet = new Set(selectedPageIds);
+  return pages.filter((page) => selectedSet.has(page.id));
+}
+
+export function createSelectionWorkspaceName(
+  pdfName: string,
+  selectedPageCount: number
+): string {
+  const baseName = pdfName.replace(/\.pdf$/i, '') || 'Untitled';
+  const suffix =
+    selectedPageCount === 1
+      ? '1-page-selection'
+      : `${selectedPageCount}-page-selection`;
+
+  return `${baseName} - ${suffix}`;
+}
+
+export function createSelectionPdfName(
+  pdfName: string,
+  selectedPageCount: number
+): string {
+  return `${createSelectionWorkspaceName(pdfName, selectedPageCount)}.pdf`;
+}