take backup

crontab.js

@@ -24,6 +24,14 @@ exports.create_new = function(name, command, schedule){
 exports.update = function(data){
 	db.update({_id: data._id}, crontab(data.name, data.command, data.schedule, null));
 }
+
+exports.status = function(_id, stopped){
+	db.update({_id: _id},{$set: {stopped: stopped}});
+}
+
+exports.remove = function(_id){
+	db.remove({_id: _id}, {});
+}
 exports.crontabs = function(callback){
 	db.find({}, function(err, docs){
 		callback(docs);
@@ -43,3 +51,20 @@ exports.set_crontab = function(){
 
 	});
 }
+
+exports.get_backup_names = function(){
+	var backups = []
+	fs.readdirSync(__dirname + '/crontabs').forEach(function(file){
+		// file name begins with backup
+		if(file.indexOf("backup") == 0){
+			backups.push(file);
+		}
+	});
+
+	return backups;
+}
+
+exports.backup = function(){
+	//TODO check if it failed
+	fs.createReadStream( __dirname + '/crontabs/crontab.db').pipe(fs.createWriteStream( __dirname + '/crontabs/backup ' + (new Date()).toString() + '.db'));
+}