'use strict';

// feat(#41): /gsd-ship generate_pr_body emits a TDD Audit table + an aggregate
// `gate_status:` trailer so the per-commit TDD gate trail survives squash-merge.
// These assertions pin the shipped workflow prose in gsd-core/workflows/ship.md.

const fs = require('node:fs');
const path = require('node:path');
const assert = require('node:assert/strict');
const { describe, test } = require('node:test');

const repoRoot = path.resolve(__dirname, '..');
function readRepoFile(relativePath) {
  return fs.readFileSync(path.join(repoRoot, relativePath), 'utf8');
}

describe('feat-41: ship.md TDD Audit gate_status extraction', () => {
  const workflow = readRepoFile('gsd-core/workflows/ship.md');

  test('adds a "## TDD Audit" section to the generated PR body', () => {
    assert.match(workflow, /## TDD Audit/);
  });

  test('extracts gate_status via Git native trailer machinery, not a raw body grep', () => {
    assert.match(workflow, /trailers:key=gate_status/);
  });

  test('scopes the scan to the merge-base..HEAD range', () => {
    assert.match(workflow, /merge-base/);
    assert.match(workflow, /\.\.HEAD/);
    assert.match(workflow, /BASE_BRANCH/);
  });

  test('excludes merge commits from the audit', () => {
    assert.match(workflow, /--no-merges/);
  });

  test('renders a Test commit / Impl commit / gate_status table', () => {
    assert.match(workflow, /Test commit[\s\S]*Impl commit[\s\S]*gate_status/);
  });

  test('pairs conventional-commit test: rows with their impl commit', () => {
    assert.match(workflow, /test:/);
    assert.match(workflow, /pair/i);
  });

  test('escapes pipe characters in commit subjects so the table is not broken', () => {
    assert.match(workflow, /[Ee]scape[\s\S]{0,60}\|/);
  });

  test('counts commits lacking a recognized gate_status trailer as missing', () => {
    assert.match(workflow, /missing/);
  });

  test('is informational and never blocks the ship', () => {
    assert.match(workflow, /informational|never block|non-blocking/i);
  });

  test('emits the aggregate trailer in the exact, stable key order', () => {
    assert.match(
      workflow,
      /gate_status:\s*skill=[^,]*,\s*fallback=[^,]*,\s*exempt=[^,]*,\s*missing=/,
    );
  });

  test('places the aggregate trailer on the final line so squash-merge carries it', () => {
    assert.match(workflow, /squash/i);
    assert.match(workflow, /final line|last line/i);
  });

  test('does not disturb the frozen #3167 core section order (Key Decisions precedes the new section)', () => {
    assert.match(workflow, /## Key Decisions[\s\S]*## TDD Audit/);
  });

  // Hardening assertions added after adversarial review.

  test('pairs test: rows only with feat:/fix: impl commits, skipping refactor/docs/chore', () => {
    assert.match(workflow, /feat:[\s\S]{0,20}fix:/);
    assert.match(workflow, /skipping[\s\S]{0,80}(refactor|docs|chore)/i);
  });

  test('normalizes the gate_status cell to a known token, never raw trailer text', () => {
    assert.match(workflow, /normaliz[a-z]*[\s\S]{0,120}missing/i);
    assert.match(workflow, /never the raw/i);
  });

  test('treats a commit with multiple gate_status trailers as missing', () => {
    assert.match(workflow, /more than one[\s\S]{0,40}gate_status/i);
  });

  test('hardens every table cell against pipe/newline injection', () => {
    assert.match(workflow, /strip[\s\S]{0,20}\\r/);
  });

  test('guards record/field delimiters against adversarial commit messages', () => {
    assert.match(workflow, /NUL|%x00|delimiter/i);
  });
});