#!/usr/bin/env node
/**
 * W1 消歧规则数漂移修复 (2026-04-25)
 * CLAUDE.md "完整 80 条" → "完整 88 条"
 *
 * 幂等: 若已是 88 则跳过
 * 备份: .bak.w1-count.<ISO>
 * sentinel: PATCH-W1-DISAMBIG-COUNT-80TO88-APPLIED
 */
'use strict';

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

const TARGET = path.join(__dirname, '..', '..', 'CLAUDE.md');
const SENTINEL = 'PATCH-W1-DISAMBIG-COUNT-80TO88-APPLIED';
const OLD_STR = '完整 80 条见 scripts/disambiguation-rules.json';
const NEW_STR = '完整 88 条见 scripts/disambiguation-rules.json';

function main() {
  if (!fs.existsSync(TARGET)) {
    console.error('[W1] CLAUDE.md 不存在:', TARGET);
    process.exit(1);
  }
  const content = fs.readFileSync(TARGET, 'utf8');

  // 幂等检查
  if (content.includes(SENTINEL) || content.includes(NEW_STR)) {
    console.log('[W1] 已是最新状态，跳过');
    process.exit(0);
  }

  if (!content.includes(OLD_STR)) {
    console.error('[W1] 未找到目标字符串，可能已被修改或不存在');
    process.exit(1);
  }

  // 备份
  const bak = TARGET + '.bak.w1-count.' + new Date().toISOString().replace(/[:.]/g, '-');
  fs.copyFileSync(TARGET, bak);
  console.log('[W1] 备份:', bak);

  // 替换
  const newContent = content.replace(OLD_STR, NEW_STR);

  // 原子写入 (tmp + rename)
  const tmp = TARGET + '.w1.tmp.' + process.pid;
  fs.writeFileSync(tmp, newContent, 'utf8');
  fs.renameSync(tmp, TARGET);

  console.log('[W1] 成功: "80 条" → "88 条"');
  console.log('[W1] ' + SENTINEL);
}

try { main(); } catch (e) {
  console.error('[W1] 异常:', e.message);
  process.exit(1);
}