// triplet CRUD — 走 mock KbdbClient（API-as-Wall），零 SQL。
import { describe, it, expect } from 'vitest';
import { createTriplet, queryTriplets, getTriplet } from '../src/actions/triplet-crud';
import { mockClient } from './mock-client';

describe('createTriplet → records API', () => {
  it('建立後可由 id 取回', async () => {
    const c = mockClient();
    const r = await createTriplet(c, { subject: 'InkStone', predicate: '是', object: '創業 OS' });
    expect(r.id).toBeDefined();
    expect(r.subject).toBe('InkStone');

    const got = await getTriplet(c, r.id);
    expect(got?.predicate).toBe('是');
    expect(got?.object).toBe('創業 OS');
  });
});

describe('queryTriplets → 插件層 filter', () => {
  it('by subject 過濾', async () => {
    const c = mockClient();
    await createTriplet(c, { subject: 'KBDB', predicate: '使用', object: 'D1' });
    await createTriplet(c, { subject: 'Other', predicate: '使用', object: 'X' });

    const { triplets, count } = await queryTriplets(c, { subject: 'KBDB' });
    expect(count).toBe(1);
    expect(triplets[0].object).toBe('D1');
  });

  it('limit/offset 分頁', async () => {
    const c = mockClient();
    for (let i = 0; i < 5; i++) await createTriplet(c, { subject: `s${i}`, predicate: 'p', object: 'o' });
    const { triplets } = await queryTriplets(c, { limit: 2, offset: 1 });
    expect(triplets.length).toBe(2);
  });
});