// tests/kb-update/test-taxonomy.test.mjs
// Unit tests for scripts/kb-update/lib/taxonomy.mjs + data/domain-taxonomy.json.
// The taxonomy is the single source of truth (lag 0) consolidating the four
// previously-divergent taxonomies: poll TARGET_PREFIXES, discover INCLUDE/EXCLUDE,
// category-skill-map.json, and report-changes getFilePriority. These tests pin the
// behaviour the refactored scripts must reproduce, plus the no-divergence invariant.

import { test } from 'node:test';
import assert from 'node:assert/strict';
import {
  loadTaxonomy,
  getSitemapPrefixes,
  getCategorySkill,
  makeClassifier,
  makePriorityFn,
} from '../../scripts/kb-update/lib/taxonomy.mjs';

const tax = loadTaxonomy();

// --- (a) sitemap prefixes — poll/discover parity ---
test('sitemap_prefixes — 18 entries with poll/discover parity', () => {
  const prefixes = getSitemapPrefixes(tax);
  assert.equal(prefixes.length, 18);
  // poll superset includes the 6 that discover previously lacked
  for (const p of ['microsoftteams_en-us_', 'sharepoint_en-us_', 'microsoft-365_en-us_',
                   'training_en-us_', 'cloud-computing_en-us_', 'privacy_en-us_']) {
    assert.ok(prefixes.includes(p), `missing prefix ${p}`);
  }
  assert.ok(prefixes.includes('azure_en-us_'));
  // dotnet is deliberately excluded (75 sitemaps, 12 matches)
  assert.ok(!prefixes.includes('dotnet_en-us_'));
});

// --- (c) category → skill — PHYSICAL DISK is canonical ---
test('category_skill — disk-truth canonical (the 4 formerly stale entries)', () => {
  // category-skill-map.json had these as ms-ai-engineering; disk says otherwise.
  assert.equal(getCategorySkill(tax, 'monitoring-observability'), 'ms-ai-governance');
  assert.equal(getCategorySkill(tax, 'copilot-extensibility'), 'ms-ai-advisor');
  assert.equal(getCategorySkill(tax, 'prompt-engineering'), 'ms-ai-advisor');
  assert.equal(getCategorySkill(tax, 'performance-scalability'), 'ms-ai-security');
  // unchanged ones
  assert.equal(getCategorySkill(tax, 'rag-architecture'), 'ms-ai-engineering');
  assert.equal(getCategorySkill(tax, 'responsible-ai'), 'ms-ai-governance');
  assert.equal(getCategorySkill(tax, 'cost-optimization'), 'ms-ai-security');
  // unknown category → null
  assert.equal(getCategorySkill(tax, 'does-not-exist'), null);
});

// --- (b) classifyUrl — reproduces discover's classification exactly ---
test('classifyUrl — include rules map to correct {skill, category}', () => {
  const classify = makeClassifier(tax);
  assert.deepEqual(
    classify('https://learn.microsoft.com/azure/ai-foundry/openai/how-to/manage-costs'),
    { skill: 'ms-ai-engineering', category: 'azure-ai-services' }
  );
  // monitoring → governance (was a divergence; derivation reproduces discover's original)
  assert.deepEqual(
    classify('https://learn.microsoft.com/azure/azure-monitor/logs/foo'),
    { skill: 'ms-ai-governance', category: 'monitoring-observability' }
  );
  // copilot-studio → advisor (was a divergence; derivation reproduces discover's original)
  assert.deepEqual(
    classify('https://learn.microsoft.com/microsoft-copilot-studio/fundamentals-what-is'),
    { skill: 'ms-ai-advisor', category: 'copilot-extensibility' }
  );
  // alternation pattern
  assert.deepEqual(
    classify('https://learn.microsoft.com/security/benchmark/azure/foo'),
    { skill: 'ms-ai-security', category: 'ai-security-engineering' }
  );
});

test('classifyUrl — exclude wins over include and non-matches return null', () => {
  const classify = makeClassifier(tax);
  // /samples/ excluded even though /azure/ai-foundry/ would include
  assert.equal(classify('https://learn.microsoft.com/azure/ai-foundry/samples/quickstart'), null);
  // /training/ excluded
  assert.equal(classify('https://learn.microsoft.com/training/modules/intro'), null);
  // unrelated path
  assert.equal(classify('https://learn.microsoft.com/azure/virtual-machines/overview'), null);
});

test('INVARIANT — every include category resolves and skill === category_skill[category]', () => {
  const classify = makeClassifier(tax);
  for (const rule of tax.relevance.include) {
    const skill = getCategorySkill(tax, rule.category);
    assert.ok(skill, `include category ${rule.category} absent from category_skill`);
  }
  // probe each rule via a synthetic URL and assert no skill/category divergence
  const probes = [
    ['https://learn.microsoft.com/azure/ai-foundry/x', 'azure-ai-services'],
    ['https://learn.microsoft.com/azure/machine-learning/x', 'mlops-genaiops'],
    ['https://learn.microsoft.com/azure/search/x', 'rag-architecture'],
    ['https://learn.microsoft.com/azure/azure-monitor/x', 'monitoring-observability'],
    ['https://learn.microsoft.com/azure/well-architected/x', 'architecture'],
    ['https://learn.microsoft.com/microsoft-copilot-studio/x', 'copilot-extensibility'],
    ['https://learn.microsoft.com/purview/x', 'responsible-ai'],
    ['https://learn.microsoft.com/agent-framework/x', 'agent-orchestration'],
    ['https://learn.microsoft.com/azure/cosmos-db/x', 'data-engineering'],
  ];
  for (const [url, expectedCat] of probes) {
    const r = classify(url);
    assert.ok(r, `no classification for ${url}`);
    assert.equal(r.category, expectedCat);
    assert.equal(r.skill, getCategorySkill(tax, r.category), `divergence at ${url}`);
  }
});

// --- (d) getFilePriority — reproduces report-changes ordering exactly ---
test('getFilePriority — pattern → priority, first match wins', () => {
  const prio = makePriorityFn(tax);
  assert.equal(prio('skills/ms-ai-security/references/cost-optimization/budget.md'), 'critical');
  assert.equal(prio('skills/ms-ai-governance/references/responsible-ai/fairness.md'), 'high');
  // 'governance' substring → high
  assert.equal(prio('skills/ms-ai-governance/references/norwegian-public-sector-governance/x.md'), 'high');
  assert.equal(prio('skills/ms-ai-advisor/references/platforms/copilot-studio.md'), 'medium');
  // no pattern → low
  assert.equal(prio('skills/ms-ai-engineering/references/data-engineering/cosmos.md'), 'low');
});

test('getFilePriority — order: cost (critical) outranks governance (high)', () => {
  const prio = makePriorityFn(tax);
  // contains both 'cost' and 'governance' — critical rule is evaluated first
  assert.equal(prio('skills/x/references/cost-governance-tradeoffs.md'), 'critical');
});