const express = require('express');
const bodyParser = require('body-parser');
const cors = require('cors');

function route(setup) {
  const app = express.Router();
  setup(app);
  return app;
}

function createRouter() {
  return route(app => {
    app.get('/', require('./actions/serveRootPage'));

    app.use(cors());
    app.use(bodyParser.json());
    app.use(require('./middleware/userToken'));

    app.use(
      '/api',
      route(app => {
        app.get('/publicKey', require('./actions/showPublicKey'));

        app.post('/auth', require('./actions/createAuth'));
        app.get('/auth', require('./actions/showAuth'));

        app.post(
          '/blacklist',
          require('./middleware/requireAuth')('blacklist.add'),
          require('./actions/addToBlacklist')
        );
        app.get(
          '/blacklist',
          require('./middleware/requireAuth')('blacklist.read'),
          require('./actions/showBlacklist')
        );
        app.delete(
          '/blacklist',
          require('./middleware/requireAuth')('blacklist.remove'),
          require('./actions/removeFromBlacklist')
        );

        if (process.env.NODE_ENV !== 'test') {
          app.get('/stats', require('./actions/showStats'));
        }
      })
    );

    // TODO: Remove
    app.get('/_publicKey', require('./actions/showPublicKey'));

    // TODO: Remove
    app.use(
      '/_auth',
      route(app => {
        app.post('/', require('./actions/createAuth'));
        app.get('/', require('./actions/showAuth'));
      })
    );

    // TODO: Remove
    app.use(
      '/_blacklist',
      route(app => {
        app.post(
          '/',
          require('./middleware/requireAuth')('blacklist.add'),
          require('./actions/addToBlacklist')
        );
        app.get(
          '/',
          require('./middleware/requireAuth')('blacklist.read'),
          require('./actions/showBlacklist')
        );
        app.delete(
          '*',
          require('./middleware/requireAuth')('blacklist.remove'),
          require('./middleware/validatePackageURL'),
          require('./actions/removeFromBlacklist')
        );
      })
    );

    // TODO: Remove
    if (process.env.NODE_ENV !== 'test') {
      app.get('/_stats', require('./actions/showStats'));
    }

    app.get(
      '*',
      require('./middleware/redirectLegacyURLs'),
      require('./middleware/validatePackageURL'),
      require('./middleware/validatePackageName'),
      require('./middleware/validateQuery'),
      require('./middleware/checkBlacklist'),
      require('./middleware/fetchPackage'),
      require('./middleware/findFile'),
      require('./actions/serveFile')
    );
  });
}

module.exports = createRouter;