/**
 * Session #51 — `--output-file` must be usable, and a crash must never look normal.
 *
 * Two defects found while sweeping the campaign/knowledge-refresh chunk, both about the
 * seam every command depends on: the command runs a scanner with `--output-file <path>
 * 2>/dev/null`, checks the exit code, and Reads the file (ux-rules 2-4).
 *
 * 1. NO SCANNER CREATES THE PARENT DIRECTORY. `saveLedger` does; the payload write does
 *    not. `commands/campaign.md` step 2 writes to
 *    `~/.claude/config-audit/sessions/campaign-report.json` — on a machine where that
 *    directory does not exist yet (the FIRST run, exactly the case campaign-cli otherwise
 *    handles gracefully with `initialized:false`) the write throws ENOENT, and the command's
 *    own exit-code table then tells the user "the campaign ledger couldn't be read — it may
 *    be corrupt. Stop; do not attempt a write over a corrupt ledger." The ledger is not
 *    corrupt; it does not exist. The user is steered away from the one action that helps.
 *
 * 2. `posture.mjs` REPORTED A CRASH AS A PASSING GRADE. Its top-level catch set
 *    `process.exitCode = 1`, and every command in this plugin is instructed that "codes 0,
 *    1, 2 are normal (PASS/WARNING/FAIL). Only 3 is a real error." So a fatal error was
 *    indistinguishable from a WARNING grade — measured live: posture exited 1, wrote no
 *    file, and the command would have gone on to Read a file that was never created.
 *    Every other scanner used 3; posture was the single outlier (1 of 14, measured).
 */

import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { spawn } from 'node:child_process';
import { readFile, mkdtemp, mkdir, writeFile, readdir } from 'node:fs/promises';
import { existsSync } from 'node:fs';
import { resolve, dirname, join } from 'node:path';
import { tmpdir } from 'node:os';
import { fileURLToPath } from 'node:url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = resolve(__dirname, '..', '..');
const SCANNERS_DIR = resolve(ROOT, 'scanners');

/**
 * Every scanner that writes a `--output-file` payload, with argv that reaches the write.
 * Determined empirically (each one was confirmed to produce the file when the parent
 * directory already exists); `self-audit.mjs` is absent because it has no such flag.
 */
const WRITERS = [
  { cli: 'campaign-cli.mjs', argv: () => ['--ledger-file', LEDGER] },
  { cli: 'campaign-write-cli.mjs', argv: (d) => ['init', '--ledger-file', join(d, 'l.json')] },
  { cli: 'campaign-export-cli.mjs', argv: () => ['--repo', REPO, '--ledger-file', LEDGER] },
  { cli: 'knowledge-refresh-cli.mjs', argv: () => [] },
  { cli: 'optimize-lens-cli.mjs', argv: () => [ROOT] },
  { cli: 'token-hotspots-cli.mjs', argv: () => [ROOT] },
  { cli: 'drift-cli.mjs', argv: () => [ROOT] },
  { cli: 'fix-cli.mjs', argv: () => [ROOT] },
  { cli: 'manifest.mjs', argv: () => [ROOT] },
  { cli: 'posture.mjs', argv: () => [ROOT] },
  { cli: 'whats-active.mjs', argv: () => [ROOT] },
  { cli: 'plugin-health-scanner.mjs', argv: () => [ROOT] },
  { cli: 'scan-orchestrator.mjs', argv: () => [ROOT] },
];

let LEDGER;
let REPO;

function run(cli, argv) {
  return new Promise((res) => {
    const child = spawn(process.execPath, [resolve(SCANNERS_DIR, cli), ...argv], { cwd: ROOT });
    child.stdout.on('data', () => {});
    child.stderr.on('data', () => {});
    child.on('close', (code) => res(code));
  });
}

test('every --output-file writer creates its parent directory', async (t) => {
  const base = await mkdtemp(join(tmpdir(), 'ca-outfile-'));
  // A tracked repo + ledger so the campaign CLIs get past their own gates and reach the write.
  REPO = join(base, 'repo');
  await mkdir(REPO, { recursive: true });
  LEDGER = join(base, 'ledger.json');
  await writeFile(
    LEDGER,
    JSON.stringify({
      schemaVersion: 1, createdDate: '2026-06-22', updatedDate: '2026-06-22',
      repos: [{ path: REPO, name: 'repo', status: 'pending', sessionId: null, findingsBySeverity: null, tokens: null, updatedDate: '2026-06-22' }],
    }, null, 2),
    'utf-8',
  );

  const failures = [];
  for (const { cli, argv } of WRITERS) {
    const dir = join(base, `work-${cli}`);
    await mkdir(dir, { recursive: true });
    // The parent of the output file deliberately does not exist.
    const out = join(dir, 'not', 'created', 'yet', 'payload.json');
    const code = await run(cli, [...argv(dir), '--output-file', out]);
    if (!existsSync(out)) failures.push(`${cli} (exit ${code})`);
  }

  assert.deepEqual(
    failures,
    [],
    'These scanners crash instead of creating the output path. A command that writes its\n' +
      'payload under ~/.claude/config-audit/sessions/ on a fresh machine gets ENOENT and\n' +
      'reports it as a corrupt/unreadable input. Add mkdir(dirname(outputFile),\n' +
      '{recursive:true}) before the write:\n  ' + failures.join('\n  '),
  );
});

test('a fatal error exits 3 — never a code the commands treat as a normal grade', async () => {
  const entries = (await readdir(SCANNERS_DIR)).filter((f) => f.endsWith('.mjs')).sort();
  const offenders = [];

  for (const file of entries) {
    const src = await readFile(resolve(SCANNERS_DIR, file), 'utf-8');
    const idx = src.indexOf('main().catch');
    if (idx === -1) continue;
    const block = src.slice(idx, idx + 400);
    const m = block.match(/process\.exitCode\s*=\s*(\d+)/);
    if (m && m[1] !== '3') offenders.push(`${file}: exitCode = ${m[1]}`);
  }

  assert.deepEqual(
    offenders,
    [],
    'ux-rules tells every command that exit 0/1/2 are normal results (PASS/WARNING/FAIL)\n' +
      'and only 3 is a real error. A fatal catch that sets anything else makes a crash\n' +
      'indistinguishable from a grade, and the command goes on to Read a file that was\n' +
      'never written:\n  ' + offenders.join('\n  '),
  );
});