vampireneo/Book

var Q = require('q'),
  cheerio = require('cheerio'),
  request = require('request'),
  moment = require('moment');

exports.getByISBN = function(pISBN) {
  var searchUrl = 'http://www.cp1897.com.hk/product_info.php?BookId=';
  var bookObj = {};
  var deferred = Q.defer();

  request(searchUrl + pISBN, function(error, response, body) {
    if (!error) {
      var $ = cheerio.load(body);
      bookObj.source = searchUrl + pISBN;
      bookObj.Title = $(
          '#mainPanel #rightPanel #productInfo_table td.productName'
        )
        .text()
        .replace(/[《》]/gi, '');
      if (bookObj.Title.indexOf('對不起！') === -1) {
        var infos = $('#mainPanel #rightPanel #productInfo_table tr');
        infos.each(function(i, info) {
          var text = $('td.productLabel', info).text();
          var value = $('td.productDesc', info)
            .text()
            .trim();
          if (text.indexOf('作者') !== -1) {
            bookObj.Author = value;
          } else if (text.indexOf('譯者') !== -1) {
            bookObj.Translater = value;
          } else if (text.indexOf('出版社') !== -1) {
            bookObj.Publisher = value;
          } else if (text.indexOf('ISBN') !== -1) {
            bookObj.ISBN = value;
          }
        });

        infos = $('#mainPanel #rightPanel #extraInfo_table tr');
        infos.each(function(i, info) {
          var text = $('td.productLabel', info).text();
          var value = $('td.productDesc', info)
            .text()
            .trim();
          if (text.indexOf('出版日期') !== -1) {
            bookObj.PublishDate = moment(value, 'YYYY年MM月').toDate();
          } else if (text.indexOf('語言版本') !== -1) {
            bookObj.Language = value.replace('中文(繁)', '繁體中文');
          } else if (text.indexOf('頁數') !== -1) {
            bookObj.Pages = value.replace(/頁/g, '').trim();
          } else if (text.indexOf('裝幀') !== -1) {
            bookObj.Spec = value;
          } else if (text.indexOf('叢書/系列') !== -1) {
            bookObj.Series = value;
          }
        });
      } else {
        bookObj = {};
      }
      deferred.resolve(bookObj);
    } else {
      deferred.resolve(bookObj);
    }
  });
  return deferred.promise;
};