import validateNpmPackageName from 'validate-npm-package-name';

import { addPackage } from '../utils/blacklist';

export default function addToBlacklist(req, res) {
  const packageName = req.body.packageName;

  if (!packageName) {
    return res
      .status(403)
      .send({ error: 'Missing "packageName" body parameter' });
  }

  const nameErrors = validateNpmPackageName(packageName).errors;

  // Disallow invalid package names.
  if (nameErrors) {
    const reason = nameErrors.join(', ');
    return res.status(403).send({
      error: `Invalid package name "${packageName}" (${reason})`
    });
  }

  addPackage(packageName).then(
    added => {
      if (added) {
        const userId = req.user.jti;
        console.log(
          `Package "${packageName}" was added to the blacklist by ${userId}`
        );
      }

      res.send({
        ok: true,
        message: `Package "${packageName}" was ${
          added ? 'added to' : 'already in'
        } the blacklist`
      });
    },
    error => {
      console.error(error);
      res.status(500).send({
        error: `Unable to add "${packageName}" to the blacklist`
      });
    }
  );
}
