todo: Shift ahead repeating items

1 files changed, 39 insertions, 0 deletions

diff --git a/modules/todo/todo.js b/modules/todo/todo.js
index 66433d9..8fabc63 100644
--- a/modules/todo/todo.js
+++ b/modules/todo/todo.js
@@ -52,6 +52,18 @@ var naccounts=0;
 })();
 
 
+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);
@@ -161,6 +173,33 @@ module.exports=function(app,io,_moddir){
 		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 {