#!/usr/bin/env node
/**
 * patch-r5-bash-separators-extension.js · 2026-04-26
 * 扩展 R5 B3 检测: 从仅 && 计数, 改为统计 && | ; | 换行 三类分隔符
 * 同时排除单引号/双引号字符串内的分隔符 (轻量剥离), 避免 heredoc 误报
 * Idempotent: sentinel 'R5-SEPARATORS-V2'
 */
'use strict';
const fs = require('fs');
const path = require('path');

const HOOK = path.join(process.env.HOME || process.env.USERPROFILE || 'C:/Users/leesu', '.claude', 'hooks', 'agent-isolation-gate.js');
const SENTINEL = 'R5-SEPARATORS-V2';

const OLD = "  // B3) && 链 ≥6 且含 io 动词\n  const ands = c.split('&&').length - 1;\n  if (ands >= 5 && /\\b(mkdir|touch|cp|mv|echo|cat)\\b/.test(c)) {\n    return { rule: 'B3', detail: '&&-chain ' + (ands + 1) + ' commands' };\n  }";

const NEW = "  // R5-SEPARATORS-V2: B3 扩展为 && / ; / 换行 三类分隔符联合统计\n  // 先剥离引号字符串避免误统计 (heredoc/echo 内分号)\n  const stripped = stripQuoted(c);\n  const sepCount = ((stripped.match(/&&|;|\\n(?!\\s*$)/g)) || []).length;\n  if (sepCount >= 5 && /\\b(mkdir|touch|cp|mv|echo|cat|rm|ln)\\b/.test(c)) {\n    return { rule: 'B3', detail: 'separators ' + (sepCount + 1) + ' commands' };\n  }";

const HELPER_ANCHOR = "function detectBashRule(cmd) {";
const HELPER_FN = "function stripQuoted(s) {\n  // 移除 '...' 和 \"...\" 内的内容, 防字符串内分号干扰分隔符计数\n  // 不处理 heredoc (<<EOF...EOF), heredoc 由调用侧的动词正则间接限制\n  return s.replace(/'[^']*'/g, \"''\").replace(/\"[^\"]*\"/g, '\"\"');\n}\n\n";

try {
  let raw = fs.readFileSync(HOOK, 'utf8');
  if (raw.includes(SENTINEL)) {
    console.log('[r5-sep] already applied, skip');
    process.exit(0);
  }
  if (!raw.includes(OLD) || !raw.includes(HELPER_ANCHOR)) {
    console.error('[r5-sep] anchor not found, abort');
    process.exit(1);
  }
  fs.writeFileSync(HOOK + '.bak.r5sep.' + Date.now(), raw, 'utf8');
  raw = raw.replace(OLD, NEW);
  raw = raw.replace(HELPER_ANCHOR, HELPER_FN + HELPER_ANCHOR);
  fs.writeFileSync(HOOK, raw, 'utf8');
  console.log('[r5-sep] applied');
} catch (e) {
  console.error('[r5-sep] error:', e.message);
  process.exit(1);
}