import { execFileSync } from 'node:child_process';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const VERSION_PATTERN = /^(?:v)?(\d+)\.(\d+)\.(\d+)(?:[-+].*)?$/;

function parseVersion(value, label) {
  const normalized = String(value ?? '').trim();
  const match = normalized.match(VERSION_PATTERN);
  if (!match) {
    throw new Error(`${label} 版本格式无效：${normalized || '(空)'}`);
  }
  return Object.freeze({ raw: normalized.replace(/^v/, ''), major: Number(match[1]) });
}

/**
 * 项目只验证开发机已经提供的运行时，不安装或切换 Node。严格固定主版本可以让
 * 本地源码运行、CI 和生产镜像使用同一语义，避免跨主版本的 ESM 与工具链差异。
 */
export function assertSupportedRuntime({ nodeVersion, pnpmVersion }) {
  const node = parseVersion(nodeVersion, 'Node.js');
  const pnpm = parseVersion(pnpmVersion, 'pnpm');
  if (node.major !== 22) {
    throw new Error(`Node.js 必须为 22.x，实际 ${node.raw}`);
  }
  if (pnpm.major !== 10) {
    throw new Error(`pnpm 必须为 10.x，实际 ${pnpm.raw}`);
  }
  return Object.freeze({ nodeVersion: node.raw, pnpmVersion: pnpm.raw });
}

function runCommandLine() {
  const pnpmVersion = execFileSync('pnpm', ['--version'], {
    encoding: 'utf8',
    stdio: ['ignore', 'pipe', 'pipe'],
  }).trim();
  const result = assertSupportedRuntime({ nodeVersion: process.version, pnpmVersion });
  process.stdout.write(
    `运行时验证通过：Node.js ${result.nodeVersion}，pnpm ${result.pnpmVersion}\n`,
  );
}

if (process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {
  runCommandLine();
}