deploy.js

import { existsSync } from 'fs';
import fsPromises from 'fs/promises';
import path from 'path';

import envalid from 'envalid';
import execa from 'execa';

const version = process.argv[2];
if (!version) {
  console.error('usage: node deploy.js <version>');
  process.exit(1);
}

const { str } = envalid;
const { DEPLOY_BUCKET_NAME, DEPLOY_DIRECTORY, DEPLOY_SYMLINK } =
  envalid.cleanEnv(
    process.env,
    {
      DEPLOY_BUCKET_NAME: str(),
      DEPLOY_DIRECTORY: str(),
      DEPLOY_SYMLINK: str(),
    },
    {
      strict: true,
    },
  );

const root = '/data';
const releaseDir = path.join(root, DEPLOY_DIRECTORY);
const symlinkPath = path.join(root, DEPLOY_SYMLINK);

await fsPromises.mkdir(releaseDir, { recursive: true });

// Verify auth
const result = await execa('gcloud', ['auth', 'list']);
if (result.stderr && result.stderr.includes('No credentialed accounts.')) {
  console.error('You need to run the login command first.');
  process.exit(1);
}

console.log(`Deploying ${version}`);
const exec = execa('gsutil', [
  '-m',
  'rsync',
  '-r',
  '-d',
  `gs://${DEPLOY_BUCKET_NAME}`,
  releaseDir,
]);
exec.stdout.pipe(process.stdout);
await exec;

const exists = existsSync(path.join(releaseDir, version));

if (!exists) {
  console.error(`Release ${version} does not exist`);
  process.exit(1);
}

// Remove previous symlink if exists
try {
  await fsPromises.unlink(symlinkPath);
} catch (e) {
  if (e.code !== 'ENOENT') {
    console.error(e.message);
    process.exit(1);
  }
}

// Create new symlink
const relativePath = path.relative(root, path.join(releaseDir, version));
console.log(`Creating symlink for ${version}`);
await fsPromises.symlink(relativePath, symlinkPath);

console.log('Finished');