#!/usr/bin/env node
/**
 * 同步项目脱敏补丁 — 2026-04-21
 *
 * 问题: hooks/clipboard-image-hook.js:48 硬编码 'C:/Users/leesu/AppData/...'
 *      导致跨机同步时仅特定账户可命中, 不可移植
 *
 * 修复方案: 改为 os.homedir() + PYTHON_EXE env 覆盖
 *   旧: const candidates = [
 *         'C:/Users/leesu/AppData/Local/Programs/Python/Python312/python.exe',
 *         'python', 'python3'
 *       ];
 *   新: const os = require('os'); const path = require('path');
 *       const candidates = [
 *         process.env.PYTHON_EXE,
 *         path.join(os.homedir(), 'AppData/Local/Programs/Python/Python312/python.exe'),
 *         'python', 'python3'
 *       ].filter(Boolean);
 *
 * 行为: 同硬编码原值, 同机用户名仍 leesu, 路径解析结果完全一致, 零行为变更
 * 幂等: sentinel = 'CLIPBOARD_PYTHON_PORTABLE_2026_04_21'
 * 原子性: .bak 备份 + tmp + rename
 */
'use strict';

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

const CLAUDE_ROOT = path.join(__dirname, '..', '..');
const TARGET = path.join(CLAUDE_ROOT, 'hooks', 'clipboard-image-hook.js');
const BACKUP = TARGET + '.bak.sync-portable';
const TMP = TARGET + '.tmp.sync-portable';
const SENTINEL = 'CLIPBOARD_PYTHON_PORTABLE_2026_04_21';

function main() {
  if (!fs.existsSync(TARGET)) {
    console.error('[patch-sync-clipboard] 目标不存在:', TARGET);
    process.exit(1);
  }

  const before = fs.readFileSync(TARGET, 'utf8');

  // 幂等: 已含 sentinel 直接跳过
  if (before.includes(SENTINEL)) {
    console.log('[patch-sync-clipboard] 已打过补丁，跳过');
    process.exit(0);
  }

  const oldBlock = `  // 优先使用完整路径，避免 PATH 查找开销
  const candidates = [
    'C:/Users/leesu/AppData/Local/Programs/Python/Python312/python.exe',
    'python',
    'python3',
  ];`;

  const newBlock = `  // 优先使用完整路径，避免 PATH 查找开销 [${SENTINEL}]
  const _os = require('os');
  const _path = require('path');
  const candidates = [
    process.env.PYTHON_EXE,
    _path.join(_os.homedir(), 'AppData/Local/Programs/Python/Python312/python.exe'),
    'python',
    'python3',
  ].filter(Boolean);`;

  if (!before.includes(oldBlock)) {
    console.error('[patch-sync-clipboard] 锚点未找到, 文件已变更, 拒绝盲改');
    process.exit(2);
  }

  // 备份
  if (!fs.existsSync(BACKUP)) {
    fs.copyFileSync(TARGET, BACKUP);
  }

  const after = before.replace(oldBlock, newBlock);

  if (after === before || !after.includes(SENTINEL)) {
    console.error('[patch-sync-clipboard] 替换未生效');
    process.exit(3);
  }

  fs.writeFileSync(TMP, after, 'utf8');
  fs.renameSync(TMP, TARGET);

  console.log('[patch-sync-clipboard] OK · 脱敏 Python 路径硬编码 (sentinel 已写入)');
  console.log('[patch-sync-clipboard]   备份:', path.relative(CLAUDE_ROOT, BACKUP));
}

main();