class Tool{
    constructor(){}
    folderCeil($id,$base_m = 5000){;
        var $v_max=$base_m*(Math.ceil($id/$base_m));
        return $v_max;
    }
    escapeHtml(text) {
        return text
            .replace(/&/g, "&")
            .replace(/</g, "&lt;")
            .replace(/>/g, "&gt;")
            .replace(/"/g, "&quot;")
            .replace(/'/g, "&#039;");
    }
    
    utoa(str) {
        return window.btoa(unescape(encodeURIComponent(str)));
    }
    atou(str) {
        return decodeURIComponent(escape(window.atob(str)));
    }
    
    buildTree(r){
        var ctags = _.groupBy( r , 'parent_id');
        var key = [];
        var tree = [];
        key = _.keys(ctags);
        if(_.contains( key , '0' )){
            for(var i = 0 ; i < ctags['0'].length ; i++){
                var tmp = {};
                //console.log(ctags['0'][i]);
                tmp = ctags['0'][i];
                tmp.children = [];
                if( ctags[ ctags['0'][i]['ctag_id'] ] ){
                    
                  var ctags_level_2 = ctags[ ctags['0'][i]['ctag_id'] ];
                  for(var j = 0 ; j < ctags_level_2.length ; j++){

                    var tmp2 = {};
                    tmp2 = ctags_level_2[j];
                    tmp.children.push(tmp2);
                  }
                }
                tree.push(tmp);
            }
        }
        return tree;
    }

    capitalizeFirstLetter(string) {
        if(string === undefined ){
            return '';
        }else if( string ){
            return string.charAt(0).toUpperCase() + string.slice(1);
        }else{
            return '';
        }
    }
    
    bytesToSize(bytes) {
       var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
       if (bytes == 0) return '0 Byte';
       var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
       return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
    }
    
    array_move(arr, old_index, new_index) {
        if (new_index >= arr.length) {
            var k = new_index - arr.length + 1;
            while (k--) {
                arr.push(undefined);
            }
        }
        arr.splice(new_index, 0, arr.splice(old_index, 1)[0]);
        return arr; // for testing
    };
    
    nl2br (str, is_xhtml) {
        if (typeof str === 'undefined' || str === null) {
            return '';
        }
        var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br />' : '<br>';
        return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1' + breakTag + '$2');
    }
    
}