/**
 * Naive CSV splitter
 *
 * This splitter is *very* simplistic and may result in errors when parsing
 * unknown CSV sources. This works well in the current problem domain.
 *
 * As we have well defined data, with no escaped quotes inside the fields, we
 * can sefaly assume that this will work.
 */
function simpleCsvSplit(lineText){
	var columns = [];
	var inside_quote = false;
	var current_data = "";
	var i=0;
	for(i=0; i<lineText.length; i++){
		var chr = lineText.substring(i, i+1);
		if (chr === "\""){
			inside_quote = !inside_quote;
			continue;
		} else if (chr === "," && !inside_quote){
			columns[columns.length] = current_data;
			current_data = "";
		}
		if (inside_quote){
			current_data += chr;
		}
	}
	columns[columns.length] = current_data;
	return columns;
}

/**
 * A container object for the task metadata
 * This makes further processing with the data a lot more expressive.
 *
 * @param lineText A string taken from the CSV output representing one line
 */
var Task = function(lineText){
	// parse the CSV data
	columns = simpleCsvSplit(lineText);

	// put everything into explicitly named variables
	this.hostName = columns[0];
	this.name = columns[1];
	this.nextRun = columns[2];
	this.status = columns[3];
	this.lastRun = columns[4];
	this.lastResult = columns[5];
	this.creator = columns[6];
	this.schedule = columns[7];
	this.command = columns[8];
	this.startIn = columns[9];
	this.comment = columns[10];
	this.scheduledState = columns[11];
	this.scheduledType = columns[12];
	this.startTime = columns[13];
	this.startDate = columns[14];
	this.endDate = columns[15];
	this.days = columns[16];
	this.months = columns[17];
	this.runAs = columns[18];
	this.deleteIfNotRescheduled = columns[19];
	this.stopIf = columns[20];
	this.repeatEvery = columns[21];
	this.repeatUntilTime = columns[22];
	this.repeatUntilDuration = columns[23];
	this.repeatStopIfRunning =columns[24];
	this.idleTime = columns[25];
	this.powerManagement = columns[26];
};

// execute the shell command to retrieve the scheduled tasks
var WshShell = new ActiveXObject("WScript.Shell");
var oExec = WshShell.Exec("schtasks /Query /FO CSV /V");

// retrieve the lines from stdout and save them as tasks
var tasks = [];
while( !oExec.StdOut.AtEndOfStream){
   tasks[tasks.length] = oExec.StdOut.ReadLine();
}

// now do something with the tasks
for(var i=2; i<tasks.length; i++){
	var tmp = new Task(tasks[i]);
	WScript.Echo(tmp.lastResult + " - " + tmp.status);
}

/**
 * Remove all files and folders that are older than a set number of days.
 *
 * @param rootURI The URI of the root folder. All old files and folders in this
 *                folder are removed.
 * @param days Files older than this number of days are deleted
 */
function purgeFiles(rootURI, days) {

  var fso = new ActiveXObject("Scripting.FileSystemObject");
  var rootFolder = fso.GetFolder(rootURI);
  var subFolders = new Enumerator(rootFolder.SubFolders);

  // create a date before which files are considered "old"
  var threshold_date = new Date();
  threshold_date.setDate(threshold_date.getDate()-days);

  // loop over each file
  subFolders.moveFirst();
  for(;!subFolders.atEnd(); subFolders.moveNext()){
     var f = subFolders.item();
     if(f.DateCreated < threshold_date ){
        //WScript.Echo("Deleting "+f.Name+"  last accessed on: "+f.DateCreated);
        f.Delete(true);
     }
  }

}

purgeFiles("C:/path/to/folder", 300);