$(document).ready(function() {
	$("label").inFieldLabels();
	$("input.text").attr("autocomplete", "off");
	$("#programsSlider").anythingSlider({
		resizeContents: false, 
		hashTags: false, 
		infiniteSlides: true, 
		buildNavigation: false, 
		autoPlay: false, 
		buildArrows: false
	});
	
	$("#arrowLeft").click(function() {
		$("#programsSlider").data('AnythingSlider').goBack();
	});
	$("#arrowRight").click(function() {
		$("#programsSlider").data('AnythingSlider').goForward();
	});
	
	$(".volumeSelect").click(function() {
		var parentLi = $(this).parent();
		var volumeID = $(this).attr('id');
		var volumeNumber = volumeID.substr(volumeID.length - 1);
		
		// handle the menu select states
		$("#volumes li").each(function(index) {
			$(this).removeClass('selected');
		});
		$(parentLi).addClass('selected');
		
		// switch in the selected PDF
		var newPDF = "#pdfVolume" + volumeNumber;
		$("div.pdfEmbed .pdf").each(function(index) {
			$(this).removeClass('selected');
		});
		$(newPDF).addClass('selected');
		
		// handle the download link
		var downloadPDF = "#downloadPDF" + volumeNumber; 
		$(".downloadPDF").each(function(index) {
			$(this).removeClass('selected');
		});
		$(downloadPDF).addClass('selected');
	});
	
	/*
	$("#subscribe").click(function() {
	});
	
	$("#sendComment").click(function() {
	});
	*/
	
	$('#newsletterSignup').validate();
	
	
	$("#subscribeForm").validate({
		rules: {
			emailAddress: {
				required: true, 
				email: true
			}
		}, 
		messages: {
			emailAddress: "Please enter your email address"
		}, 
		submitHandler: function(form) {
			submitSubscribe();
		}
	});
	$("#commentForm").validate({
		rules: {
			comment: {
				required: true
			}
		}, 
		messages: {
			comment: "Please enter your comment"
		}, 
		submitHandler: function(form) {
			submitComment();
		}
	});
});

function relative_time(time_value) {
	var values = time_value.split(" ");
	time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
	var parsed_date = Date.parse(time_value);
	var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
	var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
	delta = delta + (relative_to.getTimezoneOffset() * 60);

	if (delta < 60) {
		return 'less than a minute ago';
	} else if(delta < 120) {
		return 'about a minute ago';
	} else if(delta < (60*60)) {
		return (parseInt(delta / 60)).toString() + ' minutes ago';
	} else if(delta < (120*60)) {
		return 'about an hour ago';
	} else if(delta < (24*60*60)) {
		return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
	} else if(delta < (48*60*60)) {
		return '1 day ago';
	} else {
		return (parseInt(delta / 86400)).toString() + ' days ago';
	}
}	

function twitterCallback2(twitters) {
	var statusHTML = [];
	for(var i = 0; i < twitters.length; i++) {
		var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) {
			return '<a href="' + url + '">' + url + '</a>';
		}).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
			return '<a href="http://twitter.com/' + reply + '" target="_blank">' + reply + '</a>';
		}).replace(/\B#([_a-z0-9]+)/ig, function(hashtag) {
			return '<a href="http://twitter.com/search?q=%23' + hashtag.substr(1) + '" target="_blank">' + hashtag + '</a>';
		});
		
		var timestamp = relative_time(twitters[i].created_at);
		
		statusHTML.push('<li><p class="tweet">' + status + '</p><p class="timestamp">' + timestamp + '</p></li>');
	}
	document.getElementById('twitterFeedList').innerHTML = statusHTML.join('');
	$("#twitterFeedList").removeClass('loading');
}

function submitSubscribe() {
	var emailAddress = $("#emailAddress").val();
	$.ajax({
		type: "POST", 
		url: "/pages/ajax/subscribe.php", 
		data: ({email: emailAddress}), 
		success: function(msg) {
			var successHTML = '<p class="success">' + msg + '</p>';
			$('#subscribeMessage').html(successHTML);
		}
	});

}

function submitComment() {
	var message = $("#comment").val();
	$.ajax({
		type: "POST", 
		url: "/pages/ajax/sendMessage.php", 
		data: ({message: message, commentEmail: $('#commentEmail').val(), commentName: $('#commentName').val()}), 
		success: function(msg) {
			var successHTML = '<p class="success">' + msg + '</p>';
			$('#commentMessage').html(successHTML);
		}
	});

}