/*-----------------------------------------------------------------------------
| Copyright (c) 2014-2015, Jupyter Development Team.
|
| Distributed under the terms of the Modified BSD License.
|----------------------------------------------------------------------------*/

// Polyfill for ES6 Promises
import 'es6-promise';

import { Session } from '@jupyterlab/services';

function log(text: string): void {
  let el = document.getElementById('output');
  el.textContent = el.textContent + '\n' + text;
  console.log(text);
}

function main() {
  // Start a new session.
  let options: Session.IOptions = {
    kernelName: 'python',
    path: 'foo.ipynb'
  };
  let session: Session.ISession;

  log('Starting session');
  Session.startNew(options)
    .then(s => {
      log('Session started');
      session = s;
      // Rename the session.
      return session.setPath('bar.ipynb');
    })
    .then(() => {
      log(`Session renamed to ${session.path}`);
      // Execute and handle replies on the kernel.
      let future = session.kernel.requestExecute({ code: 'a = 1' });
      future.onReply = reply => {
        log('Got execute reply');
      };
      return future.done;
    })
    .then(() => {
      log('Future is fulfilled');
      // Shut down the session.
      return session.shutdown();
    })
    .then(() => {
      log('Session shut down');
      log('Test Complete!');
    })
    .catch(err => {
      console.error(err);
      log('Test Failed! See the console output for details');
    });
}

window.onload = main;