static/motd.js

// Copyright (c) 2018, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

"use strict";
var $ = require('jquery'),
    Raven = require('raven-js'),
    _ = require('underscore'),
    ga = require('analytics');

function handleMotd(motd, motdNode, defaultLanguage, adsEnabled, onHide) {
    if (motd.motd) {
        motdNode.find(".content").html(motd.motd);
        motdNode.removeClass('hide');
        motdNode.find(".close")
            .on('click', function () {
                motdNode.addClass('hide');
            })
            .prop('title', 'Hide this message');
        return;
    }
    if (adsEnabled) {
        var applicableAds = _.chain(motd.ads)
            .filter(function (ad) {
                return !ad.filter || ad.filter.indexOf(defaultLanguage) >= 0;
            })
            .value();
        if (applicableAds.length === 0) return;
        var randomAd = applicableAds[_.random(applicableAds.length - 1)];
        if (randomAd) {
            motdNode.find(".content").html(randomAd.html);
            motdNode.find(".close").on('click', function () {
                ga.proxy('send', {
                    hitType: 'event',
                    eventCategory: 'Ads',
                    eventAction: 'Hide'
                });
                motdNode.addClass('hide');
                onHide();
            });
            motdNode.find('a').on('click', function () {
                ga.proxy('send', {
                    hitType: 'event',
                    eventCategory: 'Ads',
                    eventAction: 'Click',
                    eventLabel: this.href
                });
            });
            motdNode.removeClass('hide');
        }
    }
}

function initialise(url, motdNode, defaultLanguage, adsEnabled, onHide) {
    if (!url) return;
    $.getJSON(url)
        .then(function (res) {
            handleMotd(res, motdNode, defaultLanguage, adsEnabled, onHide);
        })
        .catch(function (xhr, error, exc) {
            Raven.captureException(exc);
        });
}

module.exports = {
    initialise: initialise
};