#!/usr/bin/env node

const { execSync } = require('child_process');

const COLORS = {
  red: '\x1b[31m',
  green: '\x1b[32m',
  yellow: '\x1b[33m',
  cyan: '\x1b[36m',
  reset: '\x1b[0m'
};

function log(message, color = 'reset') {
  console.log(`${COLORS[color]}${message}${COLORS.reset}`);
}

function exec(command, options = {}) {
  try {
    return execSync(command, { encoding: 'utf-8', stdio: options.silent ? 'pipe' : 'inherit', ...options });
  } catch (error) {
    if (options.ignoreError) {
      return error.stdout || '';
    }
    throw error;
  }
}

function run() {
  log('\n========================================', 'cyan');
  log('  合并 master 到 production 分支', 'cyan');
  log('========================================\n', 'cyan');

  // 1. 检查是否有未提交的更改
  log('>>> 检查工作区状态...', 'yellow');
  const status = exec('git status --porcelain', { silent: true });
  if (status.trim()) {
    log('\n错误: 工作区有未提交的更改，请先提交或暂存', 'red');
    log('运行 git status 查看详情\n', 'red');
    process.exit(1);
  }
  log('工作区干净\n', 'green');

  // 2. 获取当前分支名
  const currentBranch = exec('git branch --show-current', { silent: true }).trim();
  log(`当前分支: ${currentBranch}\n`, 'cyan');

  // 3. 拉取最新代码
  log('>>> 拉取远程最新代码...', 'yellow');
  try {
    exec('git fetch origin');
  } catch (error) {
    log('\n错误: 拉取远程代码失败', 'red');
    process.exit(1);
  }
  log('拉取完成\n', 'green');

  // 4. 切换到 master 并更新
  log('>>> 切换到 master 分支并更新...', 'yellow');
  try {
    exec('git checkout master');
    exec('git pull origin master');
  } catch (error) {
    log('\n错误: 更新 master 分支失败', 'red');
    process.exit(1);
  }
  log('master 分支已更新\n', 'green');

  // 5. 切换到 production 并更新
  log('>>> 切换到 production 分支并更新...', 'yellow');
  try {
    exec('git checkout production');
    exec('git pull origin production');
  } catch (error) {
    log('\n错误: 更新 production 分支失败，分支可能不存在', 'red');
    log('请先创建 production 分支: git checkout -b production\n', 'yellow');
    exec(`git checkout ${currentBranch}`, { ignoreError: true });
    process.exit(1);
  }
  log('production 分支已更新\n', 'green');

  // 6. 合并 master 到 production
  log('>>> 合并 master 到 production...', 'yellow');
  try {
    exec('git merge master --no-edit');
  } catch (error) {
    log('\n错误: 合并过程中发生冲突!', 'red');
    log('请手动解决冲突后再提交', 'red');
    log('\n冲突文件:', 'yellow');
    exec('git diff --name-only --diff-filter=U', { ignoreError: true });
    log('\n解决冲突后运行:', 'yellow');
    log('  git add .', 'cyan');
    log('  git commit', 'cyan');
    log('  git push origin production\n', 'cyan');
    log('或放弃合并:', 'yellow');
    log('  git merge --abort\n', 'cyan');
    process.exit(1);
  }
  log('合并成功\n', 'green');

  // 7. 推送到远程
  log('>>> 推送到远程 production 分支...', 'yellow');
  try {
    exec('git push origin production');
  } catch (error) {
    log('\n错误: 推送失败', 'red');
    process.exit(1);
  }
  log('推送成功\n', 'green');

  // 8. 切换回原分支
  log(`>>> 切换回原分支 ${currentBranch}...`, 'yellow');
  exec(`git checkout ${currentBranch}`, { ignoreError: true });

  log('\n========================================', 'green');
  log('  master 已成功合并到 production!', 'green');
  log('========================================\n', 'green');
}

run();