// Tags

function preventSubmit(e)
{
	e = e || event;
	return (e.keyCode || event.which || event.charCode || 0) !== 13;
}

function selectTag(data, li, input, autoPost)
{
	var display = data.value.replace('\\', '');
	// Fix this and get it from the data object passed in, eventually, somehow
	var linktable = data.linktable;

	// Check for duplicates
	if (ID('tags[0]') != undefined) {
		var numberTags = ID('numberTags').value;

		for (i = 0; i < numberTags; i++) {
			if (ID('tags[' + i + ']').value == data.tagid) {
				alert('This item has already been tagged with ' + display + '.');
				return;
			}
		}
	}

	var o = '<DIV CLASS="tag">';
	o += '<TABLE BORDER=0 CELLPADDING=3 CELLSPACING=0>\n\n';

	o += '<TR>\n';
	o += '<TD><INPUT TYPE="hidden" NAME="' + data.linktable + 'Tags[]" VALUE="' + data.tagid + '">';
	o += '<A HREF="/tags/' + display.replace(/[^A-Za-z0-9]/g, '-').trim().toLowerCase() + '/" CLASS="small white">' + display.replace(' ', '&nbsp;') + '</A></TD>';
	o += '<TD><A HREF="javascript:removeTag(\'' + data.linktable + '\', ' + data.tagid + ');"><IMG SRC="' + shared + 'icons/delete.png" ALIGN="middle" BORDER=0 WIDTH=16 HEIGHT=16 ALT="Delete" STYLE="vertical-align: center;"></A></TD></TR>\n\n';

	o += '</TABLE>\n\n';

	o += '</DIV>\n\n';

	ID(data.linktable + 'TagResults').innerHTML += o;
	ID(data.linktable + 'Tag').value = '';

	if (parseInt(ID(data.linktable + 'AutoPost').value)) {
		var data = { 'method': 'linkTag', 'tagid': data.tagid, 'linkid': ID('id').value, 'linktable': data.linktable };

		$.get(handler, data, function(reply) {
			if (! reply.tagid)
				alert('There was a problem adding your tag.');
			$('.auto-complete-list').hide();
		});
	}
}

function removeTag(id)
{
	$('#tagResults input[value=' + id + ']').parent().remove();
}

function digestTag(box, event)
{
	if (event.keyCode == 13 && box.value != '') {
		$.get(handler, { 'method': 'digestTag', 'q': box.value }, function(reply) {
			if (! reply.tagid) {
				alert('Please type in a phrase for your tag that is at least three characters long.');
			} else {
				var li = { 'selectValue': box.value, 'extra': new Array(2) }
				li.extra[0] = reply.tagid;
				li.extra[1] = box.form.name;
				if (! reply.value)
					reply.value = box.value;
				selectTag(reply, li, box);
			}
		});
	}
}

function deletePendingTag(index)
{
	document.getElementById('tag' + index).parentNode.removeChild(document.getElementById('tag' + index));
}

function deleteExistingTag(id, index, linkTable)
{
	var data = {'method': 'deleteTag', 'id': id, 'l': linkTable, 'index': index};

	$.post(handler, data, function(reply) {
		if (! reply) {
			alert('There was no response from the server.');
		} else if (reply.error) {
			alert(reply.error);
		} else {
			deletePendingTag(index);
		}
	});
}

function digestOrganization(box, field)
{
	if (document.forms['tags'].elements[field].value)
		document.forms['tags'].elements[field].value = '';
}

function tagTypeChange(box, index)
{
	if (box.options[box.selectedIndex].text == 'Text') {
		hideID('choices' + index);
		hideID('tag' + index);
		showID('size' + index);
	} else if (box.options[box.selectedIndex].text == 'Pick One' || box.options[box.selectedIndex].text == 'Pick Several') {
		hideID('size' + index);
		hideID('tag' + index);
		showID('choices' + index);
	} else if (box.options[box.selectedIndex].text == 'ThinkLink Data') {
		hideID('size' + index);
		hideID('choices' + index);
		showID('tag' + index);
	} else {
		hideID('choices' + index);
		hideID('size' + index);
	}
}

function showTagRow(index)
{
	hideID('exclude' + index);
	showID('type' + index);
	hideID('showTagRow' + index);
	showID('hideTagRow' + index);
}

function hideTagRow(index)
{
	hideID('type' + index);
	showID('exclude' + index);
	hideID('hideTagRow' + index);
	showID('showTagRow' + index);
}

function tagPrivacy(tag, tagid, parentid, visibility)
{
	$('.privacy').html('');

	var data = {'method': 'getTagPrivacy', 'tagid': tagid, 'parentid': parentid, 'visibility': visibility };

	$.get(handler, data, function(reply) {
		if (reply.error) {
			alert(reply.error);
		} else {
			o  = "<DIV  CLASS=\"privacy\">\n\n";

			o += '<DIV CLASS="tag" ID="privacySettings' + tagid + '" CLASS="privacy" STYLE="position: absolute;">\n\n';
			o += reply;
			o += '</DIV>';

			tag.parentNode.innerHTML += o;
		}
	});
}

function changeTagPrivacy(box, tagid, pending)
{
	image = pending ? 'pendingVisibility' : 'visibility';

	if (box.selectedIndex == 0) {
		ID(image + tagid).src = ID('visibility' + tagid).src.replace('public', 'private').replace('semi', 'private');	
	} else if (box.options[box.selectedIndex].value == -1) {
		ID(image + tagid).src = ID('visibility' + tagid).src.replace('private', 'public').replace('semi', 'public');
	} else {
		ID(image + tagid).src = ID('visibility' + tagid).src.replace('public', 'semi').replace('private', 'semi');
	}
}

function closeTagSettings(parentid, tagid)
{
	hideID('privacySettings' + tagid);
}

function setTagPrivacy(button, parentid, tagid)
{
	tagVisibility = button.parentNode.parentNode.parentNode.children[2].cells[0].children[0];
	tagLevel = button.parentNode.parentNode.parentNode.children[2].cells[1].children[0];

	entityid = tagVisibility.options[tagVisibility.selectedIndex].value;
	level = tagLevel.options[tagLevel.selectedIndex].value;

	var data = {'method': 'setTagPrivacy', 'tagid': tagid, 'parentid': parentid, 'entityid': entityid, 'level': level };

	$.get(handler, data, function(reply) {
		if (reply.error) {
			alert(reply.error);
		} else {
			changeTagPrivacy(tagVisibility, tagid, 0);
			closeTagSettings(parentid, tagid);
		}
	});
}

// Votes

function vote(id, direction, anonymous)
{
	if (anonymous) {
		document.location = '/signup/index.html?attempt=vote';
		return;
	}

	$.get(handler, { 'method': 'vote', 'id': id, 'd': direction }, function(reply) {
		if (! reply) {
			alert('There was no response from the server.');
		} else if (reply.error) {
			alert(reply.error);
		} else {
			var directions = new Array('Down', 'Up');
			var button = id + '-vote' + directions[direction];
			var active = ID(button).src.search('2') !== -1;
			var otherDirection = 1 - direction;
			var otherPressed = ID(id + '-vote' + directions[otherDirection]).src.search('2') !== -1;

			if (direction == 0)
				direction = -1;

			if (otherPressed)
				ID(id + '-votes').innerHTML = forceNumber(ID(id + '-votes').innerHTML) + (forceNumber(direction));

			if (! active) {
				ID(button).src = ID(button).src.replace('1', '2');
			} else {
				ID(button).src = ID(button).src.replace('2', '1');
			}
			ID(id + '-vote' + directions[otherDirection]).src = ID(id + '-vote' + directions[otherDirection]).src.replace('2', '1');

			ID(id + '-votes').innerHTML = forceNumber(ID(id + '-votes').innerHTML) + (forceNumber(direction) * (ID(button).src.search('2') === -1 ? -1 : 1));
		}
	});
}