// 教学用检索规则实验。无网络、无模型、无向量库；不是生产性能评测。
// Run: node knowledge-base-lab.mjs (Node.js 18+)
import assert from 'node:assert/strict';

const documents = [
  { id: 'travel-v1', status: 'retired', roles: ['employee', 'admin'], terms: ['报销'], text: '虚构旧制度：差旅标准 200 元。' },
  { id: 'travel-v2', status: 'active', roles: ['employee', 'admin'], terms: ['报销'], text: '虚构现行制度：差旅标准 300 元。' },
  { id: 'ops-admin', status: 'active', roles: ['admin'], terms: ['运维轮换'], text: '虚构管理员运维轮换流程：由值班负责人复核。' },
  { id: 'meal-v1', status: 'active', roles: ['employee', 'admin'], terms: ['餐补'], text: '虚构餐补制度：按出勤记录审核。' },
];
const fixtures = [
  { id: 'current-version', query: '报销标准', role: 'employee', expected: 'travel-v2' },
  { id: 'synonym', query: '出差能报多少', role: 'employee', expected: 'travel-v2' },
  { id: 'denied', query: '运维轮换流程', role: 'employee', expected: null },
  { id: 'allowed', query: '运维轮换流程', role: 'admin', expected: 'ops-admin' },
  { id: 'missing', query: '宠物托管规则', role: 'employee', expected: null },
  { id: 'ordinary', query: '餐补怎么申请', role: 'employee', expected: 'meal-v1' },
];
const match = (doc, query) => doc.terms.some(term => query.includes(term));
const baseline = ({ query }) => documents.find(doc => match(doc, query))?.id ?? null;
const guarded = ({ query, role }) => {
  const normalized = query.replaceAll('出差', '报销');
  return documents.filter(doc => doc.status === 'active' && doc.roles.includes(role))
    .find(doc => match(doc, normalized))?.id ?? null;
};
const results = fixtures.map(test => ({
  case: test.id, query: test.query, role: test.role, expected: test.expected,
  baseline: baseline(test), guarded: guarded(test),
}));
for (const result of results) assert.equal(result.guarded, result.expected, result.case);
const baselinePasses = results.filter(row => row.baseline === row.expected).length;
assert.equal(baselinePasses, 3, 'Fixture baseline changed: review the article before updating expectations.');
console.table(results);
console.log(JSON.stringify({ fixtureCount: fixtures.length, baselinePasses, guardedPasses: results.length,
  scope: '人工构造固定样例；仅检索规则；不调用LLM；不衡量回答正确率或生产安全性。' }, null, 2));