// tests/lib/artifact-commit.test.mjs
// The commit in the target repo: the approval log always, the brief or plan only
// when the operator chose `git` (operator decision 2026-10-06: «Loggen alltid,
// briefen etter valg»). Never sweeps up anything else the operator has staged.

import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { spawnSync } from 'node:child_process';
import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

const HERE = dirname(fileURLToPath(import.meta.url));
const ROOT = join(HERE, '..', '..');
const CLI = join(ROOT, 'lib', 'util', 'artifact-commit.mjs');
const LOG = join(ROOT, 'lib', 'util', 'approval-log.mjs');
const H1 = 'c'.repeat(64);
// Every call passes a valid trailer (the CLI refuses a call without one).
const TRAILER = ['--trailer', 'Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>'];

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

function repo() {
  const d = mkdtempSync(join(tmpdir(), 'artifact-commit-'));
  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', '2026-10-06-toggle');
  mkdirSync(proj, { recursive: true });
  writeFileSync(join(proj, 'brief.md'), '# brief\n');
  spawnSync(process.execPath, [LOG, 'append', '--kind', 'intent', '--subject', join(proj, 'brief.md'), '--sha256', H1], { cwd: d });
  return { d, brief: join(proj, 'brief.md') };
}

function run(args, cwd) {
  return spawnSync(process.execPath, [CLI, ...args], { cwd, encoding: 'utf8' });
}

const committedFiles = (d) => git(d, 'show', '--name-only', '--format=', 'HEAD').stdout.trim().split('\n').filter(Boolean);

test('store git: the brief and the log land in one commit, and nothing else the operator staged', () => {
  const { d, brief } = repo();
  try {
    writeFileSync(join(d, 'unrelated.txt'), 'staged by the operator\n');
    git(d, 'add', 'unrelated.txt');
    const r = run(['--store', 'git', '--artifact', brief, '--message', 'docs(voyage): approve intent toggle', ...TRAILER], d);
    assert.equal(r.status, 0, r.stdout + r.stderr);
    assert.equal(JSON.parse(r.stdout).committed, true);
    assert.deepEqual(committedFiles(d).sort(),
      ['.claude/projects/2026-10-06-toggle/brief.md', '.claude/voyage/approvals.jsonl']);
    assert.match(git(d, 'diff', '--cached', '--name-only').stdout, /unrelated\.txt/, 'the operator\'s staged file stays staged, uncommitted');
    assert.match(git(d, 'log', '-1', '--format=%s').stdout, /approve intent toggle/);
  } finally { rmSync(d, { recursive: true, force: true }); }
});

test('store local: only the log is committed, and the project folder is kept out of git locally', () => {
  const { d, brief } = repo();
  try {
    const r = run(['--store', 'local', '--artifact', brief, '--message', 'docs(voyage): approve intent toggle', ...TRAILER], d);
    assert.equal(r.status, 0, r.stdout + r.stderr);
    assert.deepEqual(committedFiles(d), ['.claude/voyage/approvals.jsonl']);
    const exclude = readFileSync(join(d, '.git', 'info', 'exclude'), 'utf8');
    assert.match(exclude, /^\/\.claude\/projects\/2026-10-06-toggle\/$/m);
    assert.equal(git(d, 'status', '--porcelain', '--', '.claude/projects').stdout.trim(), '',
      'the local-only brief does not show as untracked');
    // idempotent: a second run adds no second exclude line
    run(['--store', 'local', '--artifact', brief, '--message', 'again', ...TRAILER], d);
    const again = readFileSync(join(d, '.git', 'info', 'exclude'), 'utf8');
    assert.equal(again.split('\n').filter((l) => l.includes('2026-10-06-toggle')).length, 1);
  } finally { rmSync(d, { recursive: true, force: true }); }
});

test('nothing new to commit is exit 0 with committed:false (a re-run is not an error)', () => {
  const { d, brief } = repo();
  try {
    assert.equal(run(['--store', 'git', '--artifact', brief, '--message', 'one', ...TRAILER], d).status, 0);
    const r = run(['--store', 'git', '--artifact', brief, '--message', 'two', ...TRAILER], d);
    assert.equal(r.status, 0, r.stdout + r.stderr);
    assert.equal(JSON.parse(r.stdout).committed, false);
  } finally { rmSync(d, { recursive: true, force: true }); }
});

test('a path the repo ignores is not forced in: exit 1 with the reason', () => {
  const { d, brief } = repo();
  try {
    writeFileSync(join(d, '.gitignore'), '.claude/\n');
    const r = run(['--store', 'git', '--artifact', brief, '--message', 'x', ...TRAILER], d);
    assert.equal(r.status, 1, r.stdout + r.stderr);
    assert.match(JSON.parse(r.stdout).reason, /ignored/i);
  } finally { rmSync(d, { recursive: true, force: true }); }
});

test('not a git repository: exit 2 (could not run), never a silent pass', () => {
  const d = mkdtempSync(join(tmpdir(), 'artifact-commit-nogit-'));
  try {
    writeFileSync(join(d, 'brief.md'), 'x');
    const r = run(['--store', 'git', '--artifact', join(d, 'brief.md'), '--message', 'x', ...TRAILER], d);
    assert.equal(r.status, 2, r.stdout + r.stderr);
  } finally { rmSync(d, { recursive: true, force: true }); }
});

test('a missing or unknown --store is a usage error (exit 2)', () => {
  const { d, brief } = repo();
  try {
    assert.equal(run(['--artifact', brief, '--message', 'x', ...TRAILER], d).status, 2);
    assert.equal(run(['--store', 'cloud', '--artifact', brief, '--message', 'x', ...TRAILER], d).status, 2);
  } finally { rmSync(d, { recursive: true, force: true }); }
});