// tests/helpers/artifact-repo.mjs
// A throwaway target repo for the artifact-commit tests
// (tests/lib/artifact-commit.test.mjs, tests/lib/artifact-commit-trailer.test.mjs):
// one commit, no git hooks, a project folder holding brief.md and, unless
// `withLog` is false, an approval-log entry for it.

import { spawnSync } from 'node:child_process';
import { mkdirSync, mkdtempSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';
import { childEnv } from './child-env.mjs';

const LOG = join(dirname(fileURLToPath(import.meta.url)), '..', '..', 'lib', 'util', 'approval-log.mjs');
const H1 = 'c'.repeat(64);

export function git(cwd, ...args) {
  return spawnSync('git', args, { cwd, encoding: 'utf8', env: childEnv() });
}

/** @returns {{ d: string, brief: string }} the repo and its brief.md */
export function artifactRepo({ prefix = 'artifact-commit-', project = '2026-10-06-toggle', withLog = true } = {}) {
  const d = mkdtempSync(join(tmpdir(), prefix));
  git(d, 'init', '-q');
  git(d, 'config', 'user.name', 'Test');
  git(d, 'config', 'user.email', 'test@example.invalid');
  git(d, 'config', 'commit.gpgsign', 'false');
  mkdirSync(join(d, '.hooks-none'));
  git(d, 'config', 'core.hooksPath', '.hooks-none');
  writeFileSync(join(d, 'README.md'), 'x\n');
  git(d, 'add', 'README.md');
  git(d, 'commit', '-q', '-m', 'init');
  const proj = join(d, '.claude', 'projects', project);
  mkdirSync(proj, { recursive: true });
  writeFileSync(join(proj, 'brief.md'), '# brief\n');
  if (withLog) {
    spawnSync(process.execPath, [LOG, 'append', '--kind', 'intent', '--subject', join(proj, 'brief.md'), '--sha256', H1],
      { cwd: d, env: childEnv() });
  }
  return { d, brief: join(proj, 'brief.md') };
}