const fs = require('fs');
const path = require('path');
const NodeSsh = require('node-ssh');
const ssh = new NodeSsh();
const commander = require('commander')

commander
.version('1.0', '-v, --version') // 默认是 -V。如果要 -v，就要加 '-v --version'
.option('-H, --host <host>', 'domain name or ip address of the target server')
.option('-P, --port <port>', 'ssh port number of the target server')
.option('-r, --root <root>', 'root path to deploy on the target server')
.option('-d, --dist <dist>', 'dist folder to deploy on the target server')
.option('-u, --user <user>', 'user id to login the target server')
.option('-k, --key <key>', 'user key file to login the target server')
.option('-p, --password <password>', 'user password to login the target server. You may have to enclose the password in ""')
.parse(process.argv)

const root=commander.root||'/home/tic/tic.node/console' // 本地的项目目录。似乎该目录必须已经存在于服务器上
const dist=commander.dist||'dist' // 新系统将发布在这个目录里。建议和npm run build产生的目录一致，这样既可以远程自动部署，也可以直接登录服务器手动部署。

const privateKeyFile=commander.key||`${process.env.HOME}/.ssh/id_rsa`
const connection = {
  host: commander.host,
  port: commander.port||22,
  username: commander.user||'tic',
  privateKey: fs.existsSync(privateKeyFile)?privateKeyFile:undefined,
  password: commander.password,
};

function subDirs(path) {
  const dirs = [path];
  if (fs.statSync(path).isFile()) {
    return dirs;
  }
  fs.readdirSync(path).forEach(item => {
    const stat = fs.statSync(`${path}/${item}`);
    if (stat.isDirectory()) {
      dirs.push(...subDirs(`${path}/${item}`))
    }
  });
  return dirs;
}

const necessaryPath = (path) => {
  return subDirs(path)
    .map(it => it.replace(path, ''))
    .filter(it => it)
    .map(it => it.split('/').filter(it => it));
};

ssh.connect(connection).then(async () => {
  await ssh.execCommand(`mv ${dist} ${dist}-backup-${new Date().toISOString()}`, { root }); // 把服务器上老系统改名成另一个目录
  await ssh.execCommand(`mkdir ${dist}`, { root }); // 新建发布目录
  const toCreate = necessaryPath('./dist'); // 读取本地项目的发布目录下的子目录，去服务器上建立。
  for (const name of toCreate) {
    await ssh.execCommand(`mkdir ${dist}/${name.join('/')}`, { root });
  }

  let err;
  await ssh.putDirectory('./dist', `${root}/${dist}`, {
    concurrency: 10,
    recursive: true,
    validate: itemPath => {
      const baseName = path.basename(itemPath);
      return !baseName.endsWith('.map');
    },
    tick: (localPath, remotePath, error) => {
      console.log(`file ${localPath} to ${remotePath} ${error || 'uploaded'}`);
      err = error;
    },
  });
  ssh.dispose();
  if (err) {
    console.log('uploaded with error!');
    process.exit(1);
  } else {
    console.log('build published!');
  }
}).catch(err => {
  console.error(err);
  ssh.dispose();
  process.exit(1);
});