BBC User API in html on bbc.co.uk

bbcuser.js

var USERINFO_URL = "";
var USERINFO_PREFIX = "www." || "www.";

function initUserCache(orbitUser) {
  var availableAttr = [
    'X-Country',
    'X-Ip_is_advertise_combined',
    'X-Ip_is_uk_combined'
  ];
  var userCache = availableAttr.reduce(function(user, curr, i) {
    if (!orbitUser[curr]) {
      return user;
    }
    var res = Object.assign({}, user);
    res[curr] = orbitUser[curr];
    return res;
  }, {});
  if (Object.keys(userCache).length !== availableAttr.length) {
    userCache._partial = true;
  }
  return userCache;
}

var user = initUserCache({
});

function checkStatus(response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  } else {
    var error = new Error(response.statusText);
    error.response = response;
    throw error;
  }
}

function parseJSON(response) {
  return response.json();
}

var supportsCors = function() {
  return typeof XMLHttpRequest !== 'undefined' &&
    'withCredentials' in new XMLHttpRequest();
};

var getUserInfoFallback = function() {
  return window.bbcpage.loadModule(['orb/fig'])
    .then(function(orbFig) {
      return new Promise(function(resolve, reject) {
        orbFig.load(function(fig) {
          var getCountryFallback = function() {
            if (fig.geo.isUK()) {
              return 'GB';
            } else if (fig.geo.isEU()) {
              return 'EU';
            }
          };
          resolve({
            'X-Country': user.country || getCountryFallback(),
            'X-Ip_is_uk_combined': fig().uk ? 'yes' : 'no',
            'X-Ip_is_advertise_combined': fig().ad ? 'yes' : 'no'
          });
        }, function () {
          reject('Error determining country. Timeout?');
        });
      });
    });
};

var _userInfoRequest;
var getUserInfo = function() {

  var host = window.location.host.toString().match(/bbc\.com$/) ? 'bbc.com' : 'bbc.co.uk';
  var userInfoUrl = USERINFO_URL || window.location.protocol + "//" + USERINFO_PREFIX + host + '/userinfo';

  if (!user._partial) {
    return Promise.resolve(user);
  }

  if (!_userInfoRequest) {
    if (typeof window.fetch === 'undefined' || !supportsCors()) {
      _userInfoRequest = getUserInfoFallback();
    } else {
      _userInfoRequest = window.fetch(userInfoUrl, { credentials: 'same-origin' })
        .then(checkStatus)
        .then(parseJSON)
        .then(function(userInfo) {
          user = userInfo;
          return user;
        });
    }
  }

  return _userInfoRequest;
};

window.bbcuser = {
    getHashedId: function() {
        return window.bbcpage.loadModule(['idcta-v2/idcta-1'])
            .then(function(idcta) {
                return idcta.getCookieInstance().getHidFromCookie();
        });
    },

    getCountry: function() {
        if (user['X-Country']) {
            return Promise.resolve(user['X-Country']);
        }
        return getUserInfo().then(function(userInfo) {
            return userInfo['X-Country'] || 'GB';
        });
    },

    isUKCombined: function() {
        return getUserInfo().then(function(userInfo) {
            if (!userInfo['X-Ip_is_uk_combined']) {
                throw new Error('missing isUKCombined from userinfo response');
            }
            return userInfo['X-Ip_is_uk_combined'].toLowerCase() === 'yes';
        })
    },

    canSeeAdverts: function() {
        return getUserInfo().then(function(userInfo) {
            if (!userInfo['X-Ip_is_advertise_combined']) {
                throw new Error('missing canSeeAdverts from userinfo response');
            }
            return userInfo['X-Ip_is_advertise_combined'].toLowerCase() === "yes";
        });
    },

    isSignedIn: function() {
        return window.bbcpage.loadModule(['idcta-v2/idcta-1'])
            .then(function(idcta) {
                return (idcta && idcta.getCookieInstance().hasCookie());
            });
    },
    allowsPerformanceCookies: function() {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function(bbccookies) {
                    return !!bbccookies.cookiesEnabled() && !!bbccookies.readPolicy('performance');
                });
    },
    allowsFunctionalCookies: function() {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function(bbccookies) {
                    return !!bbccookies.cookiesEnabled() && !!bbccookies.readPolicy('personalisation');
                });
    },
    getCookieValue: function(cookieName) {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function(bbccookies) {
                    return bbccookies.get(cookieName);
                });
    },
    resetCookiesPreferences: function() {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function(bbccookies) {
                    bbccookies.setDefaultCookiesSingleDomain();
                });
    },
    hasCookiesEnabled: function() {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function(bbccookies) {
                    return !!bbccookies.cookiesEnabled();
                });
    },
    hasSeenCookieBanner: function() {
        return window.bbcpage.loadModule(['orb/cookies'])
                .then(function (bbccookies) {
                    return !!bbccookies.isCookiePolicySet();
                });
    },
    logEvent: function (verb, noun, extraLabels) {
        return window.bbcuser.hasCookiesEnabled()
            .then(function(allowsCookies) {
                if (allowsCookies) {
                    return window.bbcpage.loadModule(['istats-1'])
                        .then(function(istats) {
                            istats.log(verb, noun, extraLabels);
                        });
                } else {
                    throw new Error('User cannot be tracked due to cookies preferences.');
                }
            });
    },
};