Ad loader

'use strict';

var mobileBreak = 770;

var imgSuffix = {
    mobile  : '_mobile_',
    desktop : '_desktop_'
}

var adGroups = {
    header     : '.g-1',
    sidebar    : '.g-2',
    sidebarInt :'.g-col',
    footer     : '.g-3'
}

function centerAdvertAmnt(obj) {
    var a = obj.width();
    var b = obj.parent().width();
    return (b * 0.5) - (a * 0.5);
}

function swapAdvertImage(obj) {
    $(obj).children('img').each(function() {
        var img = $(this).attr('src');

        if ($(window).width() > mobileBreak) {
            if (img.indexOf(imgSuffix.desktop) == -1)
                img = img.replace(imgSuffix.mobile, imgSuffix.desktop);
        }

        if ($(window).width() <= mobileBreak) {
            if (img.indexOf(imgSuffix.mobile) == -1)
                img = img.replace(imgSuffix.desktop, imgSuffix.mobile);
        }

        $(this).attr('src', img);
    });
}

function resizeAdvert(obj) {
    $(obj).each(function() {
        if ($(this).children('img').length > 0) {
            var h = $(this).children('img').first().height();
            var w = $(this).children('img').first().width();

            $(this).css({'height' : h + 'px','width'  : w + 'px'});
            $(this).children('img').toggle();
            $(this).parent().css('padding-left', centerAdvertAmnt($(this)));
        }
    });
}

$(function() {
    console.log('Testing');

    $.each(adGroups, function(k,v) {
        swapAdvertImage(v + ' a');
    });
});

$(window).load(function() {
    $(adGroups.sidebar).css('width', $('#sidebar').width() + 'px');

    $.each(adGroups, function(k,v) {
        resizeAdvert(v + ' a');
    });
});

$(window).resize(function() {
    $.each(adGroups, function(k,v) {
        swapAdvertImage(v + ' a');
    });
});