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TheAnknown / GitHub Subdir File Downloader

// ==UserScript==
// @name         GitHub Subdir File Downloader
// @version      0.1
// @description  Download files from GitHub with just single click
// @author       TheAnknown
// @match        https://github.com/*
// @require      http://code.jquery.com/jquery-3.2.1.min.js
// @grant        none
// @license MIT
// ==/UserScript==

(function() {
    'use strict';

    var color = "#000";
    $(document).ready(function(){
        start();
        getFiles();

        $("#theAWidth").on("change", function(){
            $("#theAMenu").css({ "width":$("#theAWidth").val() });
        });

        $("#wgetHeight").on("input", function(){
            $("#linux").css({ "height":$("#wgetHeight").val() });
        });

        $("#darkmode").on("change", function(){
            if($(this).is(":checked")){
                color = "#fff";
                $("#theAMenu").css({ "background":"rgba(0,0,0,.75)", "border":"3px solid #000", "color":"#fff" });
                $("#theAMenu a").css({ "color":"#fff" });
            } else {
                color = "#000";
                $("#theAMenu").css({ "background":"rgba(150,150,150,0.4)", "border":"3px solid #000", "color":"#000" });
                $("#theAMenu a").css({ "color":"#000" });
            }
        });
    });

    function start(){
        var menu = "<div id='theAMenu' style='position:fixed;top:0;left:0;background:rgba(150,150,150,0.4);border:3px solid #000;display:block;width:250px;z-index:9999;text-align:center;cursor:pointer'>";
        menu += "<center><h3 style='background:#000;color:#fff;'>GitHub Subdir File Downloader</h3></center>";
        menu += "<div id='files' style='overflow:scroll;height:250px;overflow-x:hidden;'><center><h1 style='background:#000;color:#fff;'>FILES</h1></center></div>";
        menu += "<div id='linux' style='overflow:scroll;height:100px;overflow-x:hidden;'><center><h3 style='background:#000;color:#fff;'>WGET</h3></center><input type='range' id='wgetHeight' value='100' min='100' max='500' step='1'><p id='wget' style='padding: 0 .5em;'></p></div>";
        menu += "<div id='settings'><center><h4 style='background:#000;color:#fff;'>Settings</h4></center><input type='range' id='theAWidth' value='250' min='250' max='1000' step='1'><br>Dark mode? <input type='checkbox' id='darkmode'></div>";
        menu += "</div>";

        var styles = "<style>";
        styles += "#theAMenu a { display:block;padding:.2em 0;margin: 0 auto;transition: all ease-in-out .2s;text-decoration:none;color: #000; } #theAMenu a:hover { color:#000 !important; background:#fff;}";
        styles += "</style>";

        document.getElementsByTagName("body")[0].innerHTML += styles + menu;
    }

    function getFiles(){
        var files = document.getElementsByClassName("js-navigation-open");
        var s = "";
        var links = "";
        for(var i = 0; i < files.length; i++){
            if(i > 9){
                var filename = files[i].title;
                var link = files[i].href.split("github.com").join("raw.githubusercontent.com").split("/tree").join("").split("/blob").join("");
                var current = $(files[i]).parent().parent().siblings()[0];
                var isFolder = $($(current).children()[0]).attr("class") == "octicon octicon-file-directory";
                if(!isFolder){
                    if(i == files.length - 1){
                        s += "wget " + link;
                    } else {
                        s += "wget " + link + " && ";
                    }
                    links += "<a href='" + link + "' download style='color:" + color + "'>" + filename + "</a>";

                }
            }
        }
        $("#files").html(links);
        $("#wget").html(s);
    }
    var body = "";
    setInterval(function(){
        if(body != $("body").html()){
            body = $("body").html();
            getFiles();
        }
    }, 1000);
})();