dolox/fallback

/* global cfg, def, fallback, req */

def(function() {
    cfg({
        // The list of libraries that we want use for our project.
        'libs': {
            // Include `Twitter Bootstrap`.
            // We explicity prefix `css$` to the beginning of our key so Fallback JS
            // knows to load this library as a Cascading Stylesheet (CSS).
            'css$bootstrap': {
                // Fallback JS will check to see if this style currently exists on the
                // page. If it does exist, the library will not attempt to load the file
                // as it will assume it's already been loaded on the page.
                'exports': '.col-xs-12',

                // The URLs to load `Twitter Bootstrap`.
                'urls': '//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min'
            },

            // Include `jQuery`.
            'jQuery': {
                // The URLs to load `jQuery`.
                'urls': [
                    '//ajax.googleapis.com/ajax/libs/....FAIL-ON-PURPOSE....',
                    '//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min',
                    '//cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min'
                ]
            },

            // Include `jQuery UI`.
            'jQueryUI': {
                // The global vaiable that is set by `jQuery UI` when it's loaded on the
                // page. If this variable is defined we won't attempt to load it.
                'exports': 'jQuery.ui',

                // Load `jQuery` first before loading `jQuery UI`.
                'deps': 'jQuery',

                // The URLs to load `jQuery UI`.
                'urls': [
                    '//ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/jquery.min',
                    '//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min'
                ]
            }
        }
    });

    // Load jQuery!
    req(function(jQuery) {
        jQuery('body').append('<h3 class="alert-success">Loaded jQuery!</h3>');
    });

    // Load jQuery UI!
    req(function(jQueryUI, jQuery) {
        jQuery('body').append('<h3 class="alert-success">Loaded jQuery UI!</h3>');
    });

    // Load Twitter Bootstrap!
    req(function(css$bootstrap, jQuery) {
        jQuery('body').append('<h3 class="alert-success">Loaded Twiiter Bootstrap!</h3>');
    });

    // Load All!
    req(function(css$bootstrap, jQueryUI, jQuery) {
        jQuery('body').append('<h3 class="alert-success">Loaded All!</h3>');
    });

    // Stats!
    req(function(css$bootstrap, jQueryUI, jQuery) {
        jQuery('.container').append('<h1 class="text-center">Stats</h1>');
        jQuery('.container').append('<pre id="stats">' + fallback.stats() + '</pre>');
    });
});