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index.php
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<?php
if (isset($_GET['msg'])) {
$msg = $_GET['msg'];
} else {
$msg = "Countdown to Deadline";
}
if (isset($_GET['tz'])) {
$tz = (float) ($_GET['tz']);
$tz_unset = 0;
} else {
$tz = 0;
$tz_unset = 1;
}
if (isset($_GET['font'])) {
$font = $_GET['font'];
} else {
$font = "Open Sans";
}
if (isset($_GET['fontColor'])) {
$fontColor = $_GET['fontColor'];
}
else {
$fontColor = "#00796b";
}
if (isset($_GET['bg'])) {
$bg = $_GET['bg'];
if (strlen($_GET['bg']) == 0) {
$bg = "#dddddd";
}
$bgCss = $bg;
if ($_GET['bg'][0] != "#" && strlen($_GET['bg']) != 4 && strlen($_GET['bg']) != 7) {
$bgCss = "url(\"" . $_GET['bg'] . "\")";
}
} else {
$bg = "#dddddd";
$bgCss = $bg;
}
?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US">
<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-37346108-11"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
gtag('js', new Date());
gtag('config', 'UA-37346108-11');
</script>
<title><?php echo $msg; ?></title>
<link href="https://fonts.googleapis.com/css?family=<?php echo urlencode($font); ?>" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="shortcut icon" type="image/png" href="favicon.png" />
<script src="dayjs.min.js"></script>
<link rel="stylesheet" href="countdownStyle.css" />
<style>
html {
background-color: #dddddd;
background: <?php echo $bgCss; ?>;
background-repeat: repeat;
background-size: auto 100%;
background-position: center top;
background-attachment: fixed;
}
body,
input[type="text"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="button"] {
font-family: "<?php echo $font; ?>", "Open Sans", "Roboto", sans-serif;
}
.cd p {
color: <?php echo $fontColor?>;
}
</style>
</head>
<body>
<?php
if ((isset($_GET['d'])) and (preg_match("/\d{8}T\d{4}/", $_GET['d'])) and (!isset($_GET['create']))) {
$cdDate = preg_replace('/(\d{4})(\d{2})(\d{2})T(\d{2})(\d{2})/', '$1/$2/$3 $4:$5', $_GET['d']);
$nowDT = strtotime(gmdate("Y-m-d H:i:s"));
$cdDT = strtotime($cdDate) - ($tz * 60 * 60);
$distance = ($cdDT - $nowDT - 2) * 1000;
$home_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
if ($distance > 0) {
$days = floor($distance / (1000 * 60 * 60 * 24));
$remaining = $distance / (1000 * 60 * 60 * 24) - $days;
$hours = floor($remaining * 24);
$remaining = $remaining * 24 - $hours;
$minutes = floor($remaining * 60);
$remaining = $remaining * 60 - $minutes;
$seconds = floor($remaining * 60);
} else {
$days = 0;
$hours = 0;
$minutes = 0;
$seconds = 0;
}
echo "
<div id='content'>
<h2>" . $msg . "</h2>
<div class='cd'>
<p id='days' class='d'>" . $days . "</p>
<p id='daysLabel' class='l'>DAY" . ($days != 1 ? "S" : "") . "</p>
</div>
<div class='cd'>
<p id='hours' class='d'>" . $hours . "</p>
<p id='hoursLabel' class='l'>HOUR" . ($hours != 1 ? "S" : "") . "</p></div>
<div class='cd'>
<p id='minutes' class='d'>" . $minutes . "</p>
<p id='minutesLabel' class='l'>MINUTE" . ($minutes != 1 ? "S" : "") . "</p>
</div>
<div class='cd'>
<p id='seconds' class='d'>" . $seconds . "</p>
<p id='secondsLabel' class='l'>SECOND" . ($seconds != 1 ? "S" : "") . "</p>
</div>
<p id='date'>..</p>
<p id='timezone'>..</p>
<input type='button' onclick='changeTimezone();' value='Change Timezone' id='changeTzButton'>
</div>
<a href='" . $home_link . ((strpos($home_link, '?') !== false) ? "&create" : "?create") . "' class='home'>+</a>";
} else {
$cdDate = "unset";
if (isset($_GET['d']) and preg_match("/^(\d{4})(\d{2})(\d{2})T(\d{2})(\d{2})$/", $_GET['d'])) {
$datetime = explode("T", $_GET["d"], 2);
$date = preg_replace("/^(\d{4})(\d{2})(\d{2})$/", "$1-$2-$3", $datetime[0]);
$time = preg_replace("/^(\d{2})(\d{2})$/", "$1:$2", $datetime[1]);
} else {
$date = date("Y-m-d");
$time = "23:59";
}
echo "
<div id='content' style='text-align:left; font-size: 130%;'>
<style>
input {
display: inline;
margin: 8px 0 8px 8px;
left: 0px !important;
}
@media only screen and (max-width: 565px) {
input {
margin: 14px 0 10px 0 !important;
}
}
</style>
<script>
function createCountdown() {
var d = new Date(
document.querySelector('#d').value +
' ' +
document.querySelector('#t').value
);
d = dayjs(d).format('YYYYMMDDTHHmm');
var utc = document.querySelector('#utcInput').value;
var parts = utc.split(':');
if (parts.length == 2) {
var hours = parseInt(parts[0]);
var minutes = parseInt(parts[1]);
utc = hours + minutes / 60;
}
var msg = document.querySelector('#msg').value;
var font = document.querySelector('#font').value;
var fontColor = document.querySelector('#fontColor').value;
var bg = document.querySelector('#bg').value;
var newUrl = window.location.origin + window.location.pathname + '?d=' + d;
if (utc != '') {
newUrl += '&tz=' + encodeURIComponent(utc);
}
if (msg != '') {
newUrl += '&msg=' + encodeURIComponent(msg);
}
if (font != '') {
newUrl += '&font=' + encodeURIComponent(font);
}
if (fontColor != '') {
newUrl += '&fontColor=' + encodeURIComponent(fontColor);
}
if (bg != '') {
newUrl += '&bg=' + encodeURIComponent(bg);
}
window.location.href = newUrl.replace(/ +/g, '+');
}
</script>
<h2 style='font-size: 35px;margin-bottom: 17px;padding: 0;'>Create a Countdown</h2>
<div>
Date: <input type='date' value='" . $date . "' id='d'>
</div>
<div>
Time: <input type='time' value='" . $time . "' id='t'>
</div>
<div>
UTC Offset: <input type='text' onkeyup='checkTzValue(this, false);' onblur='checkTzValue(this, true);'
value='" . ($tz >= 0 ? "+$tz" : "$tz") . "' id='utcInput'>
<a href='#' class='tooltip'>?
<span class='tooltiptext'>UTC Offset must be a valid timezone, for example -6 or +5:30.</span>
</a>
</div>
<div>
Message: <input type='text' value='" . $msg . "' id='msg'>
</div>
<div>
Font (from Google Fonts): <input type='text' value='" . $font . "' id='font'>
</div>
<div>
Font Color: <input type='text' value='" . $fontColor . "' id='fontColor'>
</div>
<div>
Background image URL or hex code: <input type='text' value='" . $bg . "' id='bg' onkeyup='updateBackground(this);'>
<a href='#' class='tooltip'>?
<span class='tooltiptext'>A hex code is specified with #RRGGBB format, for example #ffffff or #000000.</span>
</a>
</div>
<br>
<input type='button' onclick='createCountdown()' value='Create Countdown'>
</div>";
}
?>
<script src="countdown.js"></script>
<script>
var tzHour = '',tzMin = '';
function checkTzValue(input, onblur) {
var val = input.value.split(':');
var h = val[0].match(/^([+-](\d+)?)?$/);
if (h == null) {
input.value = tzHour;
tzMin = '';
return;
}
h = parseInt(h[0]);
if (isNaN(h) || (h <= 14 && h >= -12)) {
tzHour = val[0];
} else {
input.value = tzHour;
tzMin = '';
return;
}
if (val.length == 1) {
return;
} else if (Math.abs(h) != 9 && Math.abs(h) != 3 && !(h > 3 && h <= 6) && h != 8 && h != 10 && h != 12) {
input.value = tzHour;
return;
}
var m = val[1];
if (h == 8 || h == 12) {
if (m.match(/^(4(5)?)?$/) != null) {
tzMin = onblur ? '45' : m;
}
} else if (h == 5) {
if (m.match(/^4(5)?$/) != null) {
tzMin = onblur ? '45' : m;
} else if (m.match(/^3(0)?$/) != null) {
tzMin = onblur ? '30' : m;
} else {
tzMin = m.length == 2 ? m.match(/^\d/)[0] : '';
}
} else if (m.match(/^(3(0)?)?$/) != null) {
tzMin = onblur ? '30' : m;
} else if (onblur) {
tzMin = '';
}
if (onblur && tzMin != '30' && tzMin != '45') {
input.value = tzHour;
} else {
input.value = tzHour + ':' + tzMin;
}
}
function convertOffsetNotation(dotNotation) {
//Convert . notation to : in the #utcInput
var hours = Math.trunc(dotNotation);
hours = (hours >= 0) ? "+" + hours : hours;
var minutes = Math.trunc((Math.abs(dotNotation) % 1) * 60);
document.querySelector("#utcInput").value = hours + (minutes == 0 ? '' : ":" + minutes);
tzHours = hours;
tzMin = (minutes == 0) ? '' : minutes;
checkTzValue(document.querySelector("#utcInput"), true);
}
function setLocalDate() {
var countdownDate = new Date("<?php echo $cdDate; ?>");
var countdownTimezone = (!<?php echo $tz_unset ?>) ? <?php echo $tz; ?> : (new Date().getTimezoneOffset()) / (-60);
var hOffset = timezoneDiff - countdownTimezone;
countdownDate.setTime(countdownDate.getTime() + (hOffset * 60 * 60 * 1000));
document.querySelector("#date").innerHTML = "Countdown to " + dayjs(countdownDate).format("dddd, MMM D, YYYY h:mm A");
return countdownDate;
}
function getTimezone() {
// if valid date
if ("<?php echo $cdDate; ?>" != "unset") {
var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
timezoneDiff = (new Date().getTimezoneOffset()) / (-60);
countdownDate = setLocalDate();
tz = tz + checkDST();
document.querySelector("#timezone").innerHTML = timezoneDiff >= 0 ? "Timezone: " + tz + " (UTC⁠+" + timezoneDiff + ")." : "Timezone: " + tz + " (UTC⁠" + timezoneDiff + ").";
countdown(countdownDate);
} else {
var tz;
if (<?php echo $tz_unset; ?>) {
tz = new Date().getTimezoneOffset() / (-60);
} else {
tz = <?php echo $tz; ?>;
}
convertOffsetNotation(tz);
resizeCountdowns();
}
}
function changeTimezone() {
if (document.body.contains(document.querySelector("#utcInput"))) {
checkTzValue(document.querySelector("#utcInput"), true);
document.querySelector("#changeTzButton").value = "Change Timezone";
var input = document.querySelector("#utcInput").value.split(':');
var h = parseInt(input[0]);
if (isNaN(h)) { h = 0; }
var min = '';
if (input.length == 2) { min = input[1]; }
document.getElementById("timezone").innerHTML = "Timezone: " + "UTC⁠" +
(h >= 0 ? '+' + h : h) + (min == '' ? '' : ':' + min) + ".";
timezoneDiff = h + (min == '' ? 0 : parseInt(min) / 60);
setLocalDate();
} else {
document.querySelector("#timezone").innerHTML = "Timezone: UTC" +
"<input type='text' onkeyup='checkTzValue(this,false)' onblur='checkTzValue(this,true)' value='' id='utcInput'></input> " +
"<a href='#' class='tooltip'>?" +
"<span class='tooltiptext'>UTC-Offset must be a valid timezone for example -6 or +5:30.</span>\n" +
"</a>";
convertOffsetNotation(timezoneDiff);
document.querySelector("#changeTzButton").value = "Set Timezone";
document.querySelector("#utcInput").focus();
document.querySelector("#utcInput").select();
document.querySelector("#utcInput").addEventListener('keyup', function(e) {
if (e.keyCode == 13 || e.which == 13) {
changeTimezone();
}
});
}
}
function checkDST() {
var today = new Date();
return today.dst() ? " DST" : "";
}
Date.prototype.stdTimezoneOffset = function() {
var jan = new Date(this.getFullYear(), 0, 1);
var jul = new Date(this.getFullYear(), 6, 1);
return Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
}
Date.prototype.dst = function() {
return this.getTimezoneOffset() < this.stdTimezoneOffset();
}
function updateBackground(e) {
var value = e.value;
var html = document.querySelector("html");
if (/^#([0-9A-F]{3}|[0-9A-F]{6})$/gi.test(value)) {
html.style.background = value;
} else if (/^http/gi.test(value)) {
html.style.background = "url(" + value + ")";
html.style.backgroundRepeat = "repeat";
html.style.backgroundSize = "auto 100%";
html.style.backgroundPosition = "center top";
html.style.backgroundAttachment = "fixed";
}
}
window.onload = function() {
getTimezone();
}
</script>
</body>
</html>