restaurants/services/opentable.js

Search a service and get a list of restaurants.

/**
 * Dependencies
 */

var doWhilst = require('async').doWhilst
  , get = require('superagent').get
  , nameToAbbr = require('./states').nameToAbbr;

/**
 * OpenTable Constants
 */

var ENDPOINT = 'http://opentable.heroku.com/api/restaurants';

/**
 * Expose search function
 */

module.exports = function(address, all, callback) {
  var query = {
    page: 1
  };

  if (address.state) query.state = nameToAbbr[address.state];
  if (address.city) query.city = address.city;
  if (address.zip && !isNaN(address.zip)) query.zip = address.zip;
  if (address.street) query.street = address.street;

  if (all) {
    var data = []
      , last_data = [];
    doWhilst(
      function(next) {
        last_data = null;
        getRestaurants(query, function(err, restaurants) {
          if (err) {
            next(err);
          } else {
            data = data.concat(restaurants);
            last_data = restaurants;
            query.page++;
            next();
          }
        });
      }
    , function() {
        return last_data && last_data.length > 0;
      }
    , function(err) {
      callback(err, data);
    });
  } else {
    getRestaurants(query, callback);
  }
};

/**
 *  Get the restaurants for a query
 */

function getRestaurants(query, callback) {
  get(ENDPOINT)
  .query(query)
  .end(function(err, res) {
    if (err) {
      callback(err);
    } else {
      callback(err, res.body.restaurants);
    }
  });
}