hacker-news-reader/lib/helper/api.js

Hacker News Reader CLI

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Api = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _request = require('request');

var _request2 = _interopRequireDefault(_request);

var _config = require('../config');

var config = _interopRequireWildcard(_config);

var _cacheLite = require('cache-lite');

var _cacheLite2 = _interopRequireDefault(_cacheLite);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Api = exports.Api = function () {

  /**
   * Constructor
   */

  function Api() {
    _classCallCheck(this, Api);

    this.cache = new _cacheLite2.default();
    this.topNewsList = [];
  }

  /**
   * Get the Top News List
   * @return Top News List
   */


  _createClass(Api, [{
    key: 'makeRequest',


    /**
     * Make HTTP request
     * @param {string} url - Hacker Newa API url
     * @return Promise
     */
    value: function makeRequest(urlApi) {
      return new Promise(function (resolve, reject) {
        (0, _request2.default)(urlApi, function (err, res, body) {
          if (err) {
            return reject(err);
          } else if (res.statusCode !== 200) {
            var error = new Error('Unexpected status code: ' + res.statusCode);
            error.res = res;
            return reject(error);
          }
          return resolve(JSON.parse(body));
        });
      });
    }

    /**
     * Get News Detail (url, comment, point ...)
     * @param {number} id - News ID
     * @param {number} index - Index
     * @return Promise
     */

  }, {
    key: 'getNewsDetail',
    value: function getNewsDetail(id, index) {
      var _this = this;

      return new Promise(function (resolveNews, reject) {
        _this.cache.get(id).then(function (news) {
          _this.topNewsList.push(news);
          return resolveNews();
        }).catch(function () {
          _this.makeRequest(config.item(id)).then(function (news) {
            var tempNews = news;
            tempNews.order = index + 1;
            _this.cache.set(id, tempNews, 60000).then(function () {
              _this.topNewsList.push(tempNews);
              return resolveNews();
            });
          }).catch(function (err) {
            return reject(err);
          });
        });
      });
    }

    /**
     * Get top News from Hacker News
     * @return Promise
     */

  }, {
    key: 'getTopNews',
    value: function getTopNews() {
      var _this2 = this;

      return new Promise(function (resolve, reject) {
        _this2.topNewsList = [];
        _this2.makeRequest(config.topNews).then(function (ids) {
          var promiseArray = [];
          ids.slice(0, config.MaxNews).forEach(function (id, index) {
            promiseArray.push(_this2.getNewsDetail(id, index));
          });
          Promise.all(promiseArray).then(function () {
            resolve(_this2.topNewsList);
          });
        }).catch(function (err) {
          return reject(err);
        });
      });
    }
  }, {
    key: 'getTopNewsList',
    get: function get() {
      return this.topNewsList;
    }
  }]);

  return Api;
}();