var cmn=require("../$common.js"),
    fs=require("fs"),
    mkdirp=require("mkdirp");

var moddir;
var directory;

var filenameRegex=/[^a-zA-Z0-9._-]/g;

function pad(s,n){
	s=s+"";
	var p="";
	while(s.length+p.length<n)p+="0";
	return p+s;
}

function makefilename(){
	var d=new Date();
	var s=[
		pad(d.getFullYear(),4), pad(d.getMonth()+1,2), pad(d.getDate(),2),
		pad(d.getHours(),2), pad(d.getMinutes(),2), pad(d.getSeconds(),2),
		pad(d.getMilliseconds(),3)
	].join("-");
	return s+".txt";
}

module.exports=function(app,io,_moddir){
	moddir=_moddir;
	directory=moddir+"/saves";

	mkdirp.sync(directory);

	app.get("/save",function(req,res){
		res.sendFile(moddir+"/index.html");
	});
	app.post("/save",function(req,res){
		var s=req.body.trim();
		if(s=="")res.status(400).send("No text sent");
		fs.writeFile(directory+"/"+makefilename(),s,function(err){
			if(err){
				console.log(err);
				res.status(500).send("An error occurred");
				return;
			}
			res.send();
		});
	});

	app.all(["/save/read","/save/read/*"],cmn.authgen());

	app.get("/save/read",function(req,res){
		res.sendFile(moddir+"/read.html");
	});
	app.get("/save/read/files",function(req,res){
		fs.readdir(directory,function(err,files){
			if(err){
				console.log(err);
				res.status(500).send(err);
				return;
			}
			res.send(JSON.stringify(files));
		});
	});
	app.get("/save/read/file/:fname",function(req,res){
		var fname=req.params.fname.replace(filenameRegex,"");
		fs.readFile(directory+"/"+fname,function(err,text){
			if(err){
				res.status(404).send("File not found");
				return;
			}
			res.send(text);
		});
	});
	app.delete("/save/read/file/:fname",function(req,res){
		var fname=req.params.fname.replace(filenameRegex,"");
		fs.unlink(directory+"/"+fname,function(err){
			if(err){
				res.status(404).send("File not found");
				return;
			}
			res.send();
		});
	});
};