import { describe, test, expect } from 'bun:test';
import * as fs from 'fs';
import * as path from 'path';

/**
 * Template-drift tripwire for the content-binding wave. The bins are
 * code-enforced; the GRADING rules live as prose in rendered templates that
 * agents follow. This test pins the load-bearing rule text in the GENERATED
 * files so a template refactor can't silently drop a rule while the bins keep
 * working. (Prompt-followed prose is honest tier-2 enforcement — this tripwire
 * is what keeps it from being tier-3 vibes.)
 */

const ROOT = path.resolve(import.meta.dir, '..');

function rendered(rel: string): string {
  return fs.readFileSync(path.join(ROOT, rel), 'utf-8');
}

describe('content-binding template drift', () => {
  test('ship Step 16 carries the evidence check (mechanized IRON LAW)', () => {
    const ship = rendered('ship/SKILL.md');
    expect(ship).toContain('gstack-evidence check --label tests --label vitest --max-age 24 --allow-paths CHANGELOG.md,VERSION,package.json');
    expect(ship).toContain('a failed CHECK never blocks');
  });

  test('ship Step 5 lanes run wrapped with per-lane labels', () => {
    const tests = rendered('ship/sections/tests.md');
    expect(tests).toContain('gstack-evidence run --label tests');
    expect(tests).toContain('gstack-evidence run --label vitest');
  });

  test('land-and-deploy grades staleness content-first (wtree rule) and checks evidence', () => {
    const land = rendered('land-and-deploy/SKILL.md');
    expect(land).toContain('wtree');
    expect(land).toContain('---WTREE---');
    expect(land).toContain('gstack-evidence check --label tests --max-age 24');
    expect(land).toContain('UNKNOWN');
  });

  test('the review dashboard staleness rule is wtree-first for diff-scoped rows', () => {
    // The dashboard text is generated into every skill that embeds
    // {{REVIEW_DASHBOARD}}; ship is the canonical carrier.
    const ship = rendered('ship/SKILL.md');
    expect(ship).toContain('---WTREE---');
    expect(ship).toContain('diff-scoped rows only');
    expect(ship).toContain('grade UNKNOWN and treat as stale');
  });

  test('release-body write side carries the banner tripwire', () => {
    const body = rendered('document-release/sections/release-body.md');
    expect(body).toContain('grep -q "UNTRUSTED TRACKER CONTENT" /tmp/gstack-pr-body-$$.md');
    expect(body).toContain('banner tripwire clean');
  });

  test('greptile triage reads bodies through the guard (metadata/body split)', () => {
    const triage = rendered('review/greptile-triage.md');
    expect(triage).toContain('gstack-issue-guard --stdin --source greptile-line');
    expect(triage).toContain('gstack-issue-guard --stdin --source greptile-replies');
  });
});