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// ==UserScript==
// @name         Randomize content
// @namespace    https://www.blokblok.nl/
// @version      0.4
// @description  Frustrate your design!
// @author       Dio Vayne
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    if (document.URL.indexOf('random') > 0) {

        if (!jQuery) {
            addJQuery(main);
        }else{
            main();
        }
    }

})();

    function rand(min,max)
    {
        return Math.floor(Math.random()*(max-min+1)+min);
    }

    function addJQuery(callback) {
        var script = document.createElement("script");
        script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
        script.addEventListener('load', function() {
            var script = document.createElement("script");
            script.textContent = "window.jQ=jQuery.noConflict(true);(" + callback.toString() + ")();";
            document.body.appendChild(script);
        }, false);
        document.body.appendChild(script);
    }

    function main(){
        $('body').append('<a href="#" id="random" style="background-color:#000;color:#FFF;padding:5px 10px; position:fixed;bottom:0;right:0;display:block;">random</a>');

        var vSpread = 200; //replace images with version x pixels higher/lower and wider/smaller
        var vImgBreakpoint = 150; //images wider than this get replaced
        var vTheme = 'weird'; //what kind of images do you want for replacement

        $('#random').bind('click',function(){
            $('img').each(function(){
                var vT = $(this);
                var vW = vT.width();
                if(vW > vImgBreakpoint){
                    var vH = vT.height();
                    var vWmin = vW-vSpread;
                    if(vWmin < 100) vWmin = 100;
                    var vWmax = vW+vSpread;
                    var vHmin = vH-vSpread;
                    if(vHmin < 100) vHmin = 100;
                    var vHmax = vH+vSpread;
                    vT.attr('src','http://loremflickr.com/'+rand(vWmin,vWmax)+'/'+rand(vHmin,vHmax)+'/'+vTheme+'/all');
                }
            });
            $('p').each(function(){
                var vT = $(this);
                var vRandom = rand(1,3);
                var vLen = vT.text().length;
                if(vLen > 30){
                    if(vRandom === 1){
                        vT.text(vT.text().substr(0,Math.round(vLen/2)));
                    }else if(vRandom === 2){
                        vT.text(vT.text() + vT.text().substr(0,Math.round(vLen/2)));
                    }else{
                        vT.text(vT.text() + vT.text());
                    }
                }
            });
            $('a, h1, h2, h3, h4, label').not('[href^="mailto"]').not('[href^="tel"]').not('#random').each(function(){
                var vT = $(this);
                var vRandom = rand(1,3);
                var vLen = vT.text().length;
                if(vLen > 5){
                    if(vRandom === 1){
                        vT.text(vT.text().substr(0,Math.round(vLen/2)));
                    }else if(vRandom === 2){
                        vT.text(vT.text() + vT.text().substr(0,Math.round(vLen/2)));
                    }else{
                        vT.text(vT.text() + vT.text());
                    }
                }
            });
            return false;
        });
    }