// ==UserScript==
// @name         eduCoder项目文件打包下载
// @namespace    http://tampermonkey.net/
// @version      1.0.1.1
// @description  将eduCoder的项目文件打包成ZIP下载
// @author       YiJie
// @match        https://www.educoder.net/tasks/*
// @require      https://cdn.jsdelivr.net/npm/notiflix@2.1.2/dist/AIO/notiflix-aio-2.1.2.min.js
// @require      https://cdn.jsdelivr.net/npm/jszip@3.4.0/dist/jszip.min.js
// @require      https://cdn.jsdelivr.net/npm/jszip@3.4.0/vendor/FileSaver.js
// @grant        none
// @downloadURL https://update.greasyfork.icu/scripts/403244/eduCoder%E9%A1%B9%E7%9B%AE%E6%96%87%E4%BB%B6%E6%89%93%E5%8C%85%E4%B8%8B%E8%BD%BD.user.js
// @updateURL https://update.greasyfork.icu/scripts/403244/eduCoder%E9%A1%B9%E7%9B%AE%E6%96%87%E4%BB%B6%E6%89%93%E5%8C%85%E4%B8%8B%E8%BD%BD.meta.js
// ==/UserScript==

(function(){
    var log = {
        isDev:false,
        debug: function(temp){
            if(this.isDev) console.log(temp);
        },
        info: function(temp){
            console.log(temp);
        }
    }
    var MD5 = function(d){result = M(V(Y(X(d),8*d.length)));return result.toLowerCase()};function M(d){for(var _,m="0123456789ABCDEF",f="",r=0;r<d.length;r++)_=d.charCodeAt(r),f+=m.charAt(_>>>4&15)+m.charAt(15&_);return f}function X(d){for(var _=Array(d.length>>2),m=0;m<_.length;m++)_[m]=0;for(m=0;m<8*d.length;m+=8)_[m>>5]|=(255&d.charCodeAt(m/8))<<m%32;return _}function V(d){for(var _="",m=0;m<32*d.length;m+=8)_+=String.fromCharCode(d[m>>5]>>>m%32&255);return _}function Y(d,_){d[_>>5]|=128<<_%32,d[14+(_+64>>>9<<4)]=_;for(var m=1732584193,f=-271733879,r=-1732584194,i=271733878,n=0;n<d.length;n+=16){var h=m,t=f,g=r,e=i;f=md5_ii(f=md5_ii(f=md5_ii(f=md5_ii(f=md5_hh(f=md5_hh(f=md5_hh(f=md5_hh(f=md5_gg(f=md5_gg(f=md5_gg(f=md5_gg(f=md5_ff(f=md5_ff(f=md5_ff(f=md5_ff(f,r=md5_ff(r,i=md5_ff(i,m=md5_ff(m,f,r,i,d[n+0],7,-680876936),f,r,d[n+1],12,-389564586),m,f,d[n+2],17,606105819),i,m,d[n+3],22,-1044525330),r=md5_ff(r,i=md5_ff(i,m=md5_ff(m,f,r,i,d[n+4],7,-176418897),f,r,d[n+5],12,1200080426),m,f,d[n+6],17,-1473231341),i,m,d[n+7],22,-45705983),r=md5_ff(r,i=md5_ff(i,m=md5_ff(m,f,r,i,d[n+8],7,1770035416),f,r,d[n+9],12,-1958414417),m,f,d[n+10],17,-42063),i,m,d[n+11],22,-1990404162),r=md5_ff(r,i=md5_ff(i,m=md5_ff(m,f,r,i,d[n+12],7,1804603682),f,r,d[n+13],12,-40341101),m,f,d[n+14],17,-1502002290),i,m,d[n+15],22,1236535329),r=md5_gg(r,i=md5_gg(i,m=md5_gg(m,f,r,i,d[n+1],5,-165796510),f,r,d[n+6],9,-1069501632),m,f,d[n+11],14,643717713),i,m,d[n+0],20,-373897302),r=md5_gg(r,i=md5_gg(i,m=md5_gg(m,f,r,i,d[n+5],5,-701558691),f,r,d[n+10],9,38016083),m,f,d[n+15],14,-660478335),i,m,d[n+4],20,-405537848),r=md5_gg(r,i=md5_gg(i,m=md5_gg(m,f,r,i,d[n+9],5,568446438),f,r,d[n+14],9,-1019803690),m,f,d[n+3],14,-187363961),i,m,d[n+8],20,1163531501),r=md5_gg(r,i=md5_gg(i,m=md5_gg(m,f,r,i,d[n+13],5,-1444681467),f,r,d[n+2],9,-51403784),m,f,d[n+7],14,1735328473),i,m,d[n+12],20,-1926607734),r=md5_hh(r,i=md5_hh(i,m=md5_hh(m,f,r,i,d[n+5],4,-378558),f,r,d[n+8],11,-2022574463),m,f,d[n+11],16,1839030562),i,m,d[n+14],23,-35309556),r=md5_hh(r,i=md5_hh(i,m=md5_hh(m,f,r,i,d[n+1],4,-1530992060),f,r,d[n+4],11,1272893353),m,f,d[n+7],16,-155497632),i,m,d[n+10],23,-1094730640),r=md5_hh(r,i=md5_hh(i,m=md5_hh(m,f,r,i,d[n+13],4,681279174),f,r,d[n+0],11,-358537222),m,f,d[n+3],16,-722521979),i,m,d[n+6],23,76029189),r=md5_hh(r,i=md5_hh(i,m=md5_hh(m,f,r,i,d[n+9],4,-640364487),f,r,d[n+12],11,-421815835),m,f,d[n+15],16,530742520),i,m,d[n+2],23,-995338651),r=md5_ii(r,i=md5_ii(i,m=md5_ii(m,f,r,i,d[n+0],6,-198630844),f,r,d[n+7],10,1126891415),m,f,d[n+14],15,-1416354905),i,m,d[n+5],21,-57434055),r=md5_ii(r,i=md5_ii(i,m=md5_ii(m,f,r,i,d[n+12],6,1700485571),f,r,d[n+3],10,-1894986606),m,f,d[n+10],15,-1051523),i,m,d[n+1],21,-2054922799),r=md5_ii(r,i=md5_ii(i,m=md5_ii(m,f,r,i,d[n+8],6,1873313359),f,r,d[n+15],10,-30611744),m,f,d[n+6],15,-1560198380),i,m,d[n+13],21,1309151649),r=md5_ii(r,i=md5_ii(i,m=md5_ii(m,f,r,i,d[n+4],6,-145523070),f,r,d[n+11],10,-1120210379),m,f,d[n+2],15,718787259),i,m,d[n+9],21,-343485551),m=safe_add(m,h),f=safe_add(f,t),r=safe_add(r,g),i=safe_add(i,e)}return Array(m,f,r,i)}function md5_cmn(d,_,m,f,r,i){return safe_add(bit_rol(safe_add(safe_add(_,d),safe_add(f,i)),r),m)}function md5_ff(d,_,m,f,r,i,n){return md5_cmn(_&m|~_&f,d,_,r,i,n)}function md5_gg(d,_,m,f,r,i,n){return md5_cmn(_&f|m&~f,d,_,r,i,n)}function md5_hh(d,_,m,f,r,i,n){return md5_cmn(_^m^f,d,_,r,i,n)}function md5_ii(d,_,m,f,r,i,n){return md5_cmn(m^(_|~f),d,_,r,i,n)}function safe_add(d,_){var m=(65535&d)+(65535&_);return(d>>16)+(_>>16)+(m>>16)<<16|65535&m}function bit_rol(d,_){return d<<_|d>>>32-_}

    function first_stamp(fun){
        $.ajax({
            url:"https://www.educoder.net/api/main/first_stamp.json",
            async:true,
            type:"GET",
            success:function(result){
                log.debug(result);
                fun(result.message);
            }
        });
    }
	function getPro(){
        first_stamp(function(message){
            var g = "79e33abd4b6588941ab7622aed1e67e8";
            var client_key = MD5(g+message);
            var identifier = "";
            var directoryDict = {
                directory:{},
                directory_list:{},
                isfinish:false
            }
            var rep_content = function(filePath,file){
                var h = location.href.split('tasks/');
                var url = h[0]+'api/tasks/'+h[1]+'/rep_content.json';
                $.ajax({
                    url:url+"?path="+filePath+"&"
                    +"status=1&"
                    +"retry=0&"
                    +"randomcode="+message+"&"
                    +"client_key="+client_key,
                    async:true,
                    type:"GET",
                    success:function(result){
                        var file_path_section = filePath.split('/');
                        (function(i,dict){
                            if(i===file_path_section.length) return;
                            if(!dict[file_path_section[i]]){
                                dict[file_path_section[i]] = result.content;
                            }
                            arguments.callee(i+1,dict[file_path_section[i]]);
                        })(0,directoryDict.directory);

                        directoryDict.directory_list[filePath] = result.content;
                        directoryDict.isfinish = true;
                        for (var key in directoryDict.directory_list){
                            if(directoryDict.directory_list[key]==="") directoryDict.isfinish = false;
                        }
                        if(directoryDict.isfinish){
                            log.debug(directoryDict);
                            log.info(directoryDict.directory);
                            if(JSZip){
                                var zip = new JSZip();
                                (function(dictx,dir){
                                    for(var key in dictx){
                                        if(typeof(dictx[key]) === "object"){
                                            var tempDir = dir.folder(key);
                                            arguments.callee(dictx[key],tempDir);
                                        } else if(typeof(dictx[key]) === "string"){
                                            dir.file(key, dictx[key]);
                                        }
                                    }
                                })(directoryDict.directory,zip);

                                zip.generateAsync({type:"blob"})
                                .then(function(content) {
                                    saveAs(content, $('title').html()+".zip");
                                });
                            }
                        }
                    }
                });
            }
            var repository = function(path){
                $.ajax({
                    url:"https://www.educoder.net/api/myshixuns/"+identifier+"/repository.json?"
                    +"randomcode="+message+"&"
                    +"client_key="+client_key,
                    async:true,
                    traditional: true,
                    contentType: 'application/json; charset=utf-8',
                    data: JSON.stringify({
                        path:path,
                    }),
                    type:"POST",
                    success:function(result){
                        const trees = result.trees;
                        for(let i = 0;i < trees.length;i++){
                            log.debug(trees[i]);
                            var filePath = "";
                            if(trees[i].type === "tree"){
                                if(path===""){
                                    filePath = trees[i].name;
                                    directoryDict.directory[trees[i].name] = {}
                                }
                                else{
                                    filePath = path+'/'+trees[i].name;

                                    var file_path_section = filePath.split('/');
                                    (function(i,dict){
                                        if(i===file_path_section.length) return;
                                        if(!dict[file_path_section[i]]){
                                            dict[file_path_section[i]]={};
                                        }
                                        arguments.callee(i+1,dict[file_path_section[i]]);
                                    })(0,directoryDict.directory);
                                }

                                repository(filePath);
                            }else if(trees[i].type === "blob"){
                                if(path==="") filePath = trees[i].name;
                                else filePath = path+'/'+trees[i].name;
                                log.debug(filePath);

                                directoryDict.directory_list[filePath] = ""
                                rep_content(filePath);
                            }else{
                                log.debug("未知类型文件");
                            }
                        }
                    }
                });
            }
            var h = location.href.split('tasks/');
            var url = h[0]+'api/tasks/'+h[1]+'.json';
            $.ajax({
                url:url+"?randomcode="+message+"&"
                +"client_key="+client_key,
                async:true,
                type:"GET",
                success:function(result){
                    identifier = result['myshixun']['identifier'];
                    log.debug(identifier);
                    repository("");
                }
            });
        });
    }
    if(Notiflix) Notiflix.Confirm.Show(
        '提示',
        '是否下载当前项目zip文件?',
        '下载', '不了',
        function(){
            getPro();
        }, function(){
        } );
    else getPro();
})();