From 5c3de9e0a3de5844ac5104d909d6a33c89238d30 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Sun, 6 Feb 2022 19:56:33 +0100
Subject: timetrack: calendar v1

---
 modules/timetrack/timetrack.html | 125 +++++++++++++++++++++++++++++++++++----
 package-lock.json                |   1 +
 2 files changed, 116 insertions(+), 10 deletions(-)

diff --git a/modules/timetrack/timetrack.html b/modules/timetrack/timetrack.html
index c3e92dd..8d89455 100644
--- a/modules/timetrack/timetrack.html
+++ b/modules/timetrack/timetrack.html
@@ -6,6 +6,8 @@
 <script>
 "use strict";
 
+var lastlist=null;
+
 function fetch(method,url,data/*?*/,creds/*?*/,cb){
 	if(!creds){
 		cb=data;
@@ -46,6 +48,7 @@ function toinputdate(date) {
 			pad(date.getSeconds(),2,"0");
 }
 
+var monthnames=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
 var weekdays=["Mon","Tue","Wed","Thu","Fri","Sat","Sun"];
 
 function formatdate(date) {
@@ -110,11 +113,9 @@ function refreshlist(list){
 	var listelem=document.getElementById("eventlist");
 	listelem.innerHTML="";
 	var rows=[];
-	var i,ev;
-	var now=new Date();
+	var i;
 	for(i=0;i<list.length;i++){
-		ev=list[i];
-		rows.push([ev.date,tablerowfor(ev)]);
+		rows.push([list[i].date,tablerowfor(list[i])]);
 	}
 	if(rows.length==0){
 		var div=document.createElement("div");
@@ -123,16 +124,107 @@ function refreshlist(list){
 		listelem.appendChild(div);
 		return;
 	}
-	rows.sort(function(a,b){return a[0]-b[0];}); //ascending sort on the dates
 	for(i=0;i<rows.length;i++){
 		listelem.appendChild(rows[i][1]);
 	}
 }
 
+function weekstart(date){
+	var d=new Date(date.getFullYear(), date.getMonth(), date.getDate());
+	var wkday=(d.getDay()+6)%7;
+	return new Date(d - wkday*24*3600*1000);
+}
+
+function refreshcalendar(list,npreweeks){
+	if(npreweeks==undefined)npreweeks=2;
+
+	function datekey(d){return d.getFullYear()+"-"+d.getMonth()+"-"+d.getDate();}
+	var hist=new Map(), incheck=new Map();
+	var errors=[];
+	for(var i=0;i<list.length;i++){
+		var key=datekey(list[i].date);
+		if(list[i].type=="in"){
+			if(incheck.has(key)){
+				errors.push("Double check-in at "+formatdate(list[i].date));
+				continue;
+			}
+			incheck.set(key,list[i]);
+		} else if(list[i].type=="out"){
+			if(!incheck.has(key)){
+				errors.push("Loose check-out at "+formatdate(list[i].date));
+				continue;
+			}
+			var thistime=list[i].date-incheck.get(key).date;
+			incheck.delete(key);
+			var yet=hist.has(key)?hist.get(key):0;
+			hist.set(key,yet+thistime);
+		} else {
+			errors.push("Unknown type '"+list[i].type+"'");
+		}
+	}
+
+	var tb=document.getElementById("calendartb");
+	tb.innerHTML="";
+
+	var tr,td;
+	for(var i=0;i<errors.length;i++){
+		tr=document.createElement("tr");
+		td=document.createElement("td");
+		td.appendChild(document.createTextNode(errors[i]));
+		tr.appendChild(td);
+		tb.appendChild(tr);
+	}
+
+	var tr=document.createElement("tr");
+	tr.appendChild(document.createElement("td"));
+	var td;
+	for(var i=0;i<7;i++){
+		td=document.createElement("td");
+		td.appendChild(document.createTextNode(weekdays[i]));
+		tr.appendChild(td);
+	}
+	td=document.createElement("td");
+	var a=document.createElement("a");
+	a.href="javascript:refreshcalendar(lastlist,"+(npreweeks+4)+")";
+	a.appendChild(document.createTextNode("\u2191"));
+	td.appendChild(a);
+	tr.appendChild(td);
+	tb.appendChild(tr);
+
+	var thismonday=weekstart(new Date());
+	for(var wkoff=-npreweeks;wkoff<=1;wkoff++){
+		var monday=new Date(thismonday.getTime() + wkoff*7*24*3600*1000);
+
+		tr=document.createElement("tr");
+		td=document.createElement("td");
+		var label=monday.getDate().toString();
+		if(monday.getDate() <= 7 || wkoff == -npreweeks){
+			label = monthnames[monday.getMonth()].slice(0,3) + " " + label;
+		}
+		td.appendChild(document.createTextNode(label));
+		tr.appendChild(td);
+
+		for(var i=0;i<7;i++){
+			var day=new Date(thismonday.getTime() + (wkoff*7+i)*24*3600*1000);
+			var tm=hist.get(datekey(day))||0;
+			var descr=Math.round(tm/1000/3600*10)/10+"h";
+			var target=(day.getDay()+6)%7 < 5 ? 38/5 - 1 : 0;
+			var diff=tm - target*3600*1000;
+			var surplus=1-Math.exp(-(diff>0?diff:0)/(3*3600*1000));
+			var deficit=1-Math.exp(-(diff<0?-diff:0)/(3*3600*1000));
+			td=document.createElement("td");
+			td.appendChild(document.createTextNode(descr));
+			td.setAttribute("style","background-color:rgb("+(255-255*surplus)+","+(255-255*(deficit+surplus))+","+(255-255*deficit)+")");
+			tr.appendChild(td);
+		}
+		tb.appendChild(tr);
+	}
+}
+
 function handleReceivedList(list){
-	var i;
-	for(i=0;i<list.length;i++)list[i].date=new Date(list[i].date);
+	lastlist=list;
 	refreshlist(list);
+	refreshcalendar(list);
 }
 
 function getlist(){
@@ -148,6 +240,8 @@ function getlist(){
 			alert("An error occurred!");
 			return;
 		}
+		for(var i=0;i<list.length;i++)list[i].date=new Date(list[i].date);
+		list.sort(function(a,b){return a.date-b.date;});
 		handleReceivedList(list);
 	});
 }
@@ -280,17 +374,24 @@ body{
 	color:red;
 	cursor:pointer;
 }
-.addeventform{
+#addeventform{
 	border:1px #ddd solid;
 	display:inline-block;
 	padding:5px;
 }
-.addeventform > input[type="text"] {
+#addeventform > input[type="text"] {
 	margin-bottom: 5px;
 }
 #logoutwrapper{
 	float:right;
 }
+#calendartb td{
+	width:35px;
+}
+#calendartb td:first-child{
+	text-align:right;
+	width:50px;
+}
 </style>
 </head>
 <body>
@@ -300,7 +401,7 @@ body{
 <h1>TimeTrack</h1>
 <div id="eventlist"></div>
 <br><br>
-<div class="addeventform">
+<div id="addeventform">
 	Sheet: <input type="text" id="addeventsheet" placeholder="Sheet">
 	<select id="sheetselect" onchange="setSheetFromSelect()"></select> <br>
 	Text: <input type="text" id="addeventtext" placeholder="Text"> (optional) <br>
@@ -310,5 +411,9 @@ body{
 	<label for="addeventtypeout" style="margin-left: 20px"><input type="radio" id="addeventtypeout" name="addeventtype"> Out</label> <br style="margin-top: 5px">
 	<input type="button" onclick="doAddEvent(event)" value="Add" style="margin-top: 5px">
 </div>
+<br><br>
+<div id="calendar">
+	<table><tbody id="calendartb"></tbody></table>
+</div>
 </body>
 </html>
diff --git a/package-lock.json b/package-lock.json
index 75aa7ba..7e9271b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,6 +5,7 @@
   "requires": true,
   "packages": {
     "": {
+      "name": "webserver",
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
-- 
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