chore: more refactorings

tests/engine/GenerationPostIndexService.test.ts

@@ -0,0 +1,73 @@
+import { describe, expect, it } from 'vitest';
+import type { PostData } from '../../src/main/engine/PostEngine';
+import {
+  buildGenerationPostIndex,
+  estimateGenerationUnitsBySection,
+} from '../../src/main/engine/GenerationPostIndexService';
+
+function makePost(overrides: Partial<PostData> = {}): PostData {
+  const createdAt = overrides.createdAt ?? new Date('2025-01-02T10:00:00.000Z');
+  return {
+    id: overrides.id ?? 'post-1',
+    projectId: overrides.projectId ?? 'project',
+    title: overrides.title ?? 'Title',
+    slug: overrides.slug ?? 'title',
+    excerpt: overrides.excerpt,
+    content: overrides.content ?? 'Body',
+    status: overrides.status ?? 'published',
+    author: overrides.author,
+    createdAt,
+    updatedAt: overrides.updatedAt ?? createdAt,
+    publishedAt: overrides.publishedAt,
+    tags: overrides.tags ?? [],
+    categories: overrides.categories ?? [],
+  };
+}
+
+describe('GenerationPostIndexService', () => {
+  it('indexes posts by category tag and date partitions', () => {
+    const posts = [
+      makePost({ id: '1', categories: ['news'], tags: ['t1'], createdAt: new Date('2025-01-15T00:00:00.000Z') }),
+      makePost({ id: '2', categories: ['page'], tags: ['t2'], createdAt: new Date('2025-02-20T00:00:00.000Z') }),
+    ];
+
+    const index = buildGenerationPostIndex(posts);
+
+    expect(index.postsByCategory.get('news')?.map((p) => p.id)).toEqual(['1']);
+    expect(index.postsByCategory.get('page')?.map((p) => p.id)).toEqual(['2']);
+    expect(index.postsByTag.get('t2')?.map((p) => p.id)).toEqual(['2']);
+    expect(index.postsByYear.get(2025)?.length).toBe(2);
+    expect(index.postsByYearMonth.get('2025/01')?.length).toBe(1);
+    expect(index.postsByYearMonthDay.get('2025/02/20')?.length).toBe(1);
+  });
+
+  it('estimates generation units per section using indexed counts', () => {
+    const posts = [
+      makePost({ id: '1', categories: ['news'], tags: ['t1'], createdAt: new Date('2025-01-15T00:00:00.000Z') }),
+      makePost({ id: '2', categories: ['news'], tags: ['t1'], createdAt: new Date('2025-01-14T00:00:00.000Z') }),
+      makePost({ id: '3', categories: ['page'], tags: [], createdAt: new Date('2025-01-13T00:00:00.000Z') }),
+    ];
+
+    const index = buildGenerationPostIndex(posts);
+    const estimate = estimateGenerationUnitsBySection({
+      posts,
+      allCategories: new Set(['news', 'page']),
+      allTags: new Set(['t1']),
+      yearsMap: new Map([[2025, new Date()]]),
+      yearMonthsMap: new Map([['2025/01', new Date()]]),
+      yearMonthDaysMap: new Map([
+        ['2025/01/15', new Date()],
+        ['2025/01/14', new Date()],
+        ['2025/01/13', new Date()],
+      ]),
+      maxPostsPerPage: 2,
+      postIndex: index,
+    });
+
+    expect(estimate.core).toBeGreaterThanOrEqual(4);
+    expect(estimate.single).toBe(3);
+    expect(estimate.category).toBe(2);
+    expect(estimate.tag).toBe(1);
+    expect(estimate.date).toBeGreaterThan(0);
+  });
+});