boxrec-client/index.js

A BoxRec client which fetches data from the BoxRec boxing website via web scraping in Node.js

const cheerio = require('cheerio');
const request = require('request');

const getValue = (element, removeWhitespace) => {
  if (removeWhitespace) {
    return element.parent().next().text().trim()
      .replace(/ /g, '');
  }
  return element.parent().next().text().trim();
};

// The module returns a client object

const boxrecClient = {

  getBoxerById: (id) => {
    // Define the boxer fetch function, returning a promise
    const getBoxer = fighterID => new Promise((resolve, reject) => {
      // If the ID is not a string, reject the promise
      if (typeof fighterID !== 'string') {
        reject(new Error('Invalid id parameter. It must be a string'));
      }

      request(`http://boxrec.com/en/boxer/${fighterID}`, (error, response, body) => {
        // If the request failed, reject the promise
        if (error) {
          reject(error);
        }

        // Load the page HTML into Cheerio
        const $ = cheerio.load(body);

        const boxer = {
          alias: '',
          bouts: '',
        };

        $('.profileTable .rowTable .rowLabel b').filter(function () {
          if ($(this).text().indexOf('alias') > -1) {
            boxer.alias = getValue($(this));
          }
          if ($(this).text().indexOf('bouts') > -1) {
            boxer.bouts = parseInt(getValue($(this)), 10);
          }
          if ($(this).text().indexOf('debut') > -1) {
            boxer.debut = getValue($(this));
          }
          if ($(this).text().indexOf('nationality') > -1) {
            boxer.nationality = getValue($(this));
          }
          if ($(this).text().indexOf('KOs') > -1) {
            boxer.knockoutPercentage = parseInt(getValue($(this)), 10);
          }
          if ($(this).text().indexOf('rounds') > -1) {
            boxer.rounds = parseInt(getValue($(this)), 10);
          }
          if ($(this).text().indexOf('stance') > -1) {
            boxer.stance = getValue($(this));
          }
          if ($(this).text().indexOf('division') > -1) {
            boxer.weightDivision = getValue($(this));
          }
          if ($(this).text().indexOf('height') > -1) {
            boxer.height = getValue($(this), true);
          }
          if ($(this).text().indexOf('reach') > -1) {
            boxer.reach = getValue($(this), true);
          }
          if ($(this).text().indexOf('residence') > -1) {
            boxer.residence = getValue($(this));
          }
          if ($(this).text().indexOf('birth place') > -1) {
            boxer.birthPlace = getValue($(this));
          }
        });

        // Extract the data we need
        boxer.dob = $('span[itemprop="birthDate"]').text();
        boxer.name = $('h1').text();
        boxer.wins = parseInt($('.profileWLD .bgW').text(), 10);
        boxer.winsKO = parseInt($('.profileWLD .textWon').text(), 10);
        boxer.draws = parseInt($('.profileWLD .bgD').text(), 10);
        boxer.losses = parseInt($('.profileWLD .bgL').text(), 10);
        boxer.lossesKO = parseInt($('.profileWLD .textLost').text(), 10);

        // Fight record
        boxer.fights = [];

        let fight = {};

        // For each fight in the boxer's record
        $('#listBoutsResults, tr.drawRowBorder').each((i, elem) => {
          
          // Reset fight variable
          fight = {};

          // For each table cell in this fight
          elem.children.forEach((child, index) => {

            // Switch the loop index to retrieve various fight props
            switch (index) {

              // Date
              case 1:
                  fight.date = $(child).text().trim();
                break;

              // Opponent
              case 3:
                fight.opponent = $(child).children('a').text().trim();
                break;

              // Venue
              case 6:
                fight.country = $(child).children('.flag').attr('class').split(' ').pop();
                fight.venue = $(child).text().trim();
                break;

              // Result
              case 7:
                fight.result = $(child).text().trim();
                break;

              // Outcome
              case 8:
                fight.outcome = $(child).text().split('\n')[0].trim();
                fight.round = $(child).text().split('\n')[2].trim();
                break;
            }
          });

          // Add fight to fights array
          boxer.fights.push(fight);
        });


        resolve(boxer);
      });
    });

    // Call our get boxer function, which returns a promise
    return getBoxer(id);
  },
};

// Uncomment this to test the function
boxrecClient.getBoxerById('659461').then((boxer) => {
  console.log(boxer);
});

module.exports = boxrecClient;