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"use strict";
var cmn=require("../$common.js"),
persist=require("node-persist"),
bcrypt=require("bcrypt"),
basicAuth=require("basic-auth"),
fs=require("fs");
var bcryptHashRounds=10;
var moddir=null;
persist=persist.create({
dir:"persist/todo",
continuous:false,
interval:false
});
persist.initSync();
//tasks: {"user": [{id: Int,subject: String,repweeks: Int,date: Date}]}
//accounts: {"user": hash (String)}
//repweeks==0 implies no repetition
var nextid=persist.getItemSync("nextid");
if(nextid==null){
nextid=1;
persist.setItemSync("nextid",nextid);
}
var tasks=persist.getItemSync("tasks");
(function(){
if(tasks==null){
tasks={};
persist.setItemSync("tasks",tasks);
} else {
for(var user in tasks){
for(var task of tasks[user]){
task.date=new Date(task.date);
if(nextid<=task.id)nextid=task.id+1;
}
}
persist.setItemSync("nextid",nextid);
}
})();
var accounts=persist.getItemSync("accounts");
if(accounts==null){
accounts={};
persist.setItemSync("accounts",accounts);
}
var naccounts=0;
(function(){
var user;
for(user in accounts)naccounts++;
})();
function shiftDate(date,repweeks){
var Y=date.getFullYear(),
M=date.getMonth(),
D=date.getDate(),
h=date.getHours(),
m=date.getMinutes(),
s=date.getSeconds(),
ms=date.getMilliseconds();
return new Date(Y,M,D+7*repweeks,h,m,s,ms);
}
function sendUnauth(res){
res.set("WWW-Authenticate","Basic realm=Authorization required");
return res.sendStatus(401);
}
function unknownUserHandler(req,res,next){
res.sendFile(moddir+"/unknownuser.html");
}
function authMiddleware(req,res,next){
var user=basicAuth(req);
req.authuser=null;
if(!user||!user.name){
sendUnauth(res);
return;
}
req.authuser=user.name;
if(accounts[req.authuser]){
bcrypt.compare(user.pass,accounts[req.authuser],function(err,ok){
if(ok)next();
else sendUnauth(res);
});
} else {
unknownUserHandler(req,res,next);
}
}
function asciiValid(str){
var i,c;
for(i=0;i<str.length;i++){
c=str.charCodeAt(i);
if(c<32||c>=127)return false;
}
return true;
}
module.exports=function(app,io,_moddir){
moddir=_moddir;
//first the endpoints that need to bypass authMiddleware
app.get("/todo/authfail",function(req,res){
sendUnauth(res);
});
app.post("/todo/createuser",function(req,res){
var user=basicAuth(req);
if(!user||!user.name){
res.status(400).send("No credentials sent");
return;
}
if(user.name.length<3||user.name.length>32||!asciiValid(user.name)){
res.status(400).send("Invalid username");
return;
}
if(user.pass.length<3||user.pass.length>32||!asciiValid(user.pass)){
res.status(400).send("Invalid password");
return;
}
if(accounts[user.name]){
res.status(400).send("User already exists");
return;
}
if(naccounts>=20){
res.status(500).send("Too many accounts created, please contact Tom...");
return;
}
bcrypt.hash(user.pass,bcryptHashRounds,function(err,hash){
if(!hash){
res.status(500).send("Something went wrong...");
console.log(err);
return;
}
accounts[user.name]=hash;
tasks[user.name]=[];
persist.setItemSync("accounts",accounts);
persist.setItemSync("tasks",tasks);
res.status(200).end();
});
});
app.all(["/todo","/todo/*"],authMiddleware); //for all the other endpoints
app.get("/todo",function(req,res){
var contents=fs.readFileSync(moddir+"/todo.html","utf8");
var replaced=contents.replace("/*REPLACEME*/null/*TODOLIST*/",
JSON.stringify(tasks[req.authuser]));
res.send(replaced);
});
app.get("/todo/list",function(req,res){
res.json(tasks[req.authuser]);
});
app.delete("/todo/task",function(req,res){
var id=+req.body;
var i;
var fail=false;
var usertasks=tasks[req.authuser];
if(id<0||~~id!=id||isNaN(id)||!usertasks){
fail=true;
} else {
for(i=0;i<usertasks.length;i++)if(usertasks[i].id==id)break;
if(i==usertasks.length)fail=true;
else {
usertasks.splice(i,1);
persist.setItemSync("tasks",tasks);
}
}
if(fail)res.status(404).send("Unknown id");
else res.status(200).end();
});
app.post("/todo/task/shiftahead",function(req,res){
var id=+req.body;
var i;
var fail=false;
var usertasks=tasks[req.authuser];
var now;
if(id<0||~~id!=id||isNaN(id)||!usertasks){
fail=true;
} else {
for(i=0;i<usertasks.length;i++)if(usertasks[i].id==id)break;
if(i==usertasks.length)fail=true;
else if(usertasks[i].repweeks==0){
res.status(400).send("Can't shiftahead a non-repeating task");
return;
} else {
now=new Date();
while(usertasks[i].date<now){ // First move up to now
usertasks[i].date=shiftDate(usertasks[i].date,usertasks[i].repweeks);
}
// Then for the actual shiftahead:
usertasks[i].date=shiftDate(usertasks[i].date,usertasks[i].repweeks);
persist.setItemSync("tasks",tasks);
}
}
if(fail)res.status(404).send("Unknown id");
else res.status(200).end();
});
app.post("/todo/task",function(req,res){
var obj;
try {
obj=JSON.parse(req.body);
} catch(e){
res.status(400).send("Invalid request");
return;
}
var subject=obj.subject+"",repweeks=+obj.repweeks,date=new Date(obj.date);
if(subject.length==0||
isNaN(repweeks)||repweeks<0||repweeks!=~~repweeks||
isNaN(date.getTime())){
res.status(400).send("Invalid data");
return;
}
if(tasks[req.authuser].length>=40){
res.status(400).send("Isn't 40 tasks enough for you?");
return;
}
tasks[req.authuser].push({
id:nextid++,
subject:subject,
repweeks:repweeks,
date:date
});
persist.setItemSync("tasks",tasks);
persist.setItemSync("nextid",nextid);
res.status(200).end();
});
};
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