msd-core/scripts/fix-slash-commands.cjs

'use strict';
/**
 * One-shot script + library: bidirectional MSD slash-command namespace normalizer.
 *
 * - Default direction (transformContent): retired /msd-<cmd> → /msd:<cmd>
 *   (keeps monorepo sources, docs, and workflows in the active colon form).
 * - Reverse direction (transformContentToHyphen): /msd:<cmd> / msd:<cmd> → msd-<cmd>
 *   (used during skill installation for runtimes that register skills under the
 *   canonical hyphen form established in #2808).
 *
 * Both directions only rewrite known commands from `commands/msd/*.md` (longest-first
 * matching + word-boundary safety). Non-commands (msd-sdk, msd-tools, etc.) are
 * intentionally left untouched.
 *
 * The transforms are pure and exported for use by the installer and tests.
 */

const fs = require('node:fs');
const path = require('node:path');

const COMMANDS_DIR = path.join(__dirname, '..', 'commands', 'msd');
const SEARCH_DIRS = [
  path.join(__dirname, '..', 'msd-core', 'bin', 'lib'),
  path.join(__dirname, '..', 'msd-core', 'workflows'),
  path.join(__dirname, '..', 'msd-core', 'references'),
  path.join(__dirname, '..', 'msd-core', 'templates'),
  path.join(__dirname, '..', 'msd-core', 'contexts'),
  path.join(__dirname, '..', 'commands', 'msd'),
  path.join(__dirname, '..', 'agents'),
  path.join(__dirname, '..', 'hooks'),
];

const TOP_LEVEL_FILES = [
  path.join(__dirname, '..', '.clinerules'),
];

const SKIP_DIRS = new Set(['node_modules', 'dist', '.turbo']);
const EXTENSIONS = new Set(['.md', '.cjs', '.js', '.ts', '.tsx']);

// Test files contain intentional fixture strings (e.g. inputs the sanitizer
// is expected to strip). Rewriting them changes test semantics.
function isTestFile(name) {
  return /\.test\.(c?js|tsx?)$/.test(name);
}

function buildPattern(cmdNames) {
  // Empty input would compile `/msd-()(?=[^a-zA-Z0-9_-]|$)/g`, which the regex
  // engine still matches at any `/msd-` token followed by a non-word boundary
  // (e.g. EOL, whitespace, punctuation) — rewriting it to a stray `/msd:`.
  // Short-circuit so the caller can no-op on a missing/empty registry rather
  // than perform an unintended broad rewrite.
  if (!Array.isArray(cmdNames) || cmdNames.length === 0) return null;
  const sorted = [...cmdNames].sort((a, b) => b.length - a.length); // longest first to avoid partial matches
  return new RegExp(`/msd-(${sorted.join('|')})(?=[^a-zA-Z0-9_-]|$)`, 'g');
}

/**
 * Pure transform: rewrite retired `/msd-<cmd>` to `/msd:<cmd>` for the given command names.
 * Returns the rewritten string. Identifiers not in `cmdNames` (e.g. `/msd-sdk`,
 * `/msd-tools`) are left untouched.
 */
function transformContent(src, cmdNames) {
  const pattern = buildPattern(cmdNames);
  if (!pattern) return src;
  return src.replace(pattern, (_, cmd) => `/msd:${cmd}`);
}

/**
 * Build regex for the reverse direction (colon form → hyphen form).
 * Matches both "msd:cmd" and "/msd:cmd" (the leading / is preserved automatically
 * because it is not part of the match). Uses longest-first ordering plus
 * bidirectional word-boundary safety (negative lookbehind on the left, lookahead
 * on the right) so matches only occur at token boundaries.
 */
function buildColonPattern(cmdNames) {
  if (!Array.isArray(cmdNames) || cmdNames.length === 0) return null;
  const sorted = [...cmdNames].sort((a, b) => b.length - a.length);
  return new RegExp(`(?<![a-zA-Z0-9_-])msd:(${sorted.join('|')})(?=[^a-zA-Z0-9_-]|$)`, 'g');
}

/**
 * Pure transform (reverse): rewrite `/msd:<cmd>` / `msd:<cmd>` to hyphen form
 * for known MSD commands.
 *
 * Non-command identifiers (e.g. msd-sdk, msd-tools) are left untouched, matching
 * the safety contract of the forward transform.
 */
function transformContentToHyphen(src, cmdNames) {
  const pattern = buildColonPattern(cmdNames);
  if (!pattern) return src;
  return src.replace(pattern, (_, cmd) => `msd-${cmd}`);
}

function readCmdNames() {
  try {
    return fs.readdirSync(COMMANDS_DIR)
      .filter(f => f.endsWith('.md'))
      .map(f => f.replace(/\.md$/, ''));
  } catch (err) {
    // Only swallow the missing-directory case. Any other error (EACCES, ENOTDIR,
    // etc.) indicates a real misconfiguration and must propagate so callers are
    // not silently handed an empty registry while the real problem goes undetected.
    if (err.code !== 'ENOENT') throw err;
    // COMMANDS_DIR may not exist on installs that use skill-based runtimes or
    // global Claude installs (no local commands/msd/ directory). Return [] so
    // callers that handle an empty array gracefully (buildPattern returns null,
    // transformContent is a no-op) are not broken by a missing directory.
    return [];
  }
}

function processFile(file, cmdNames) {
  const pattern = buildPattern(cmdNames);
  if (!pattern) return;
  let src;
  try { src = fs.readFileSync(file, 'utf-8'); } catch { return; }
  const replaced = transformContent(src, cmdNames);
  if (replaced !== src) {
    fs.writeFileSync(file, replaced, 'utf-8');
    const count = (src.match(pattern) || []).length;
    console.log(`  ${count} replacements: ${path.relative(path.join(__dirname, '..'), file)}`);
  }
}

function processDir(dir, cmdNames) {
  const pattern = buildPattern(cmdNames);
  if (!pattern) return;
  let entries;
  try { entries = fs.readdirSync(dir, { withFileTypes: true }); } catch { return; }
  for (const e of entries) {
    const full = path.join(dir, e.name);
    if (e.isDirectory()) {
      if (SKIP_DIRS.has(e.name)) continue;
      processDir(full, cmdNames);
    } else if (EXTENSIONS.has(path.extname(e.name)) && !isTestFile(e.name)) {
      processFile(full, cmdNames);
    }
  }
}

if (require.main === module) {
  const cmdNames = readCmdNames();
  for (const dir of SEARCH_DIRS) {
    processDir(dir, cmdNames);
  }
  for (const file of TOP_LEVEL_FILES) {
    processFile(file, cmdNames);
  }
  console.log('Done.');
}

module.exports = {
  transformContent,
  transformContentToHyphen,
  buildPattern,
  buildColonPattern,
  readCmdNames,
  SKIP_DIRS
};