whatsthis/services/twitter.js

Discover embedable content from URL's

'use strict';

var request = require('request');

/**
 * Detect if the given URL is an image.
 *
 * @param {Result} result Result of message parsing.
 * @param {Function} next Continuation callback.
 * @private
 */
module.exports = function twitter(result, next) {
  if (
       !(result.url.hostname === 'twitter.com' || result.url.hostname === 'mobile.twitter.com')
    || !/\/[^\/]+\/status\//gi.test(result.url.pathname)
  ) {
    return next();
  }

  //
  // Mobile urls are not accepted by the embed URL so we need to transform the
  // host name to just twitter.com to generate a proper embed code.
  //
  result.url.set('hostname', 'twitter.com');

  result.type = 'social';
  result.service = 'twitter';

  request({
    json: true,
    method: 'GET',
    url: 'https://api.twitter.com/1/statuses/oembed.json?url='+ result.url.href
  }, function generedembed(err, res, body) {
    if (err) return fn();

    result.html = body.html;

    return next(undefined, true);
  });
};