Team:KULeuven/Tools/New Day/Date Retriever

<html>
<script type="text/javascript">

var monthNames = new Array('January', 'February', 'March', 'April', 'May',
'June', 'July', 'August', 'September', 'October', 'November', 'December');

/* Extracts the corresponding calendar date out of the page url */
function pageDate() {
	// Retrieve page url
	var urlTokens = location.href.split("/");
	var urlLast = urlTokens[urlTokens.length - 1];

	// Retrieve page date
	var wikiTokens = urlLast.split("#");
	var wikiFirst = wikiTokens[0];

	// Retrieve seperate date components
	var dateTokens = wikiFirst.split("_");

	var day = parseInt(dateTokens[0]);
	var month;
	for (x in monthNames) {
		if(dateTokens[1] == monthNames[x]) {month = parseInt(x); break;}
	}
	var year = parseInt(dateTokens[2]);

	// Construct a Date object and return the result
	var date = new Date();
	date.setFullYear(year, month, day);

	return date;
}

/* Retrieves date ndays before this page date */
function datePast(ndays) {
	var pastDate = new Date();
	pastDate.setDate(pageDate().getDate() - ndays);
alert(pastDate.toGMTString());
	return pastDate;
}

/* Searches date ndays after this page date */
function dateFuture(ndays) {
	var futureDate = new Date();
	futureDate.setDate(pageDate().getDate() + ndays);
	return futureDate;
}

/* Returns the date of Friday previous week */
function previousWeekFriday() {
	var dayOfWeek = pageDate().getDay();
	var previousWeekFriday = new Date();

	switch(dayOfWeek) {
		case 0: previousWeekFriday = datePast(9); break;
		default: previousWeekFriday = datePast(dayOfWeek + 2); break;
	}

	return previousWeekFriday;
}

/* Returns the date of Monday next week */
function nextWeekMonday() {
	var dayOfWeek = pageDate().getDay();
	var nextWeekMonday = new Date();

	switch(dayOfWeek) {
		case 0: nextWeekMonday = dateFuture(1); break;
		default: nextWeekMonday = dateFuture(8 - dayOfWeek); break;
	}

	return nextWeekMonday;
}

/* Returns the date of Friday this week */
function thisFriday() {
	var dayOfWeek = pageDate().getDay();
	var thisFriday;

	switch(dayOfWeek) {
		case 0: thisFriday = datePast(2); break;
		case 6: thisFriday = datePast(1); break;
		default: thisFriday = dateFuture(5 - dayOfWeek); break;
	}

	return thisFriday;
}

/* Converts a date into a valid url for the KULeuven wiki and loads the page */
function goToDate(date) {
	var URL = "https://2008.igem.org/Team:KULeuven/";
		URL += date.getDate();
		URL += '_';
		URL += monthNames[date.getMonth() - 1];
		URL += '_';
		URL += date.getFullYear();
	window.location.href = URL;
}
</script>

<center>
<table width="70%">
<tr>
<td align="left" width="25%"><a href="https://2008.igem.org/Team:KULeuven/Meeting_Reports">&lt;&lt; return to notebook</a></td>
<td></td>
<td></td>
<td align="right" width="25%"><a href="https://2008.igem.org/Team:KULeuven">return to homepage &gt;&gt;</a></td>
</tr>
<tr align="center">
<td align="left" width="25%"><a href="javascript:void(0);" onClick="goToDate(previousWeekFriday());">&lt; previous friday</a></td>
<td width="25%"><a href="javascript:void(0);" onClick="goToDate(datePast(1));">← yesterday</a></td>
<td width="25%"><a href="javascript:void(0);" onClick="goToDate(dateFuture(1));">tomorrow →</a></td>
<td align="right" width="25%"><a href="javascript:void(0);" onClick="goToDate(nextWeekMonday());">next monday &gt;</a></td>
</tr>
</table>
</center>

</html>