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$(function() {
var websocket = null;
var title = getParameterByName('title');
var address = getParameterByName('address');
var commission = getParameterByName('commission');
var logo = getParameterByName('logo');
var exchange = 0;
if (title != "")
$('#title').html(title);
if (commission == "")
commission = 3;
if (logo != "") {
$('#logo').attr('src', logo).show();
$('#title').hide();
}
if (address == "")
address = '1VAnbtCAnYccECnjaMCPnWwt81EHCVgNr'
$('#address').html(address);
$('#received').hide()
setupQR();
setupSocket();
$('#amount').keyup(updateTotal);
$('#amount').focus();
$('#amount').focus(function() {
$('#received').hide();
$('#payment').fadeIn('slow');
$(this).val('');
updateTotal();
});
$('#error').click(function() {
location.reload();
});
function updateTotal() {
var amount = parseFloat($('#amount').val());
var total = amount / exchange;
total = Math.ceil(total * 10000) / 10000;
if (!$.isNumeric(total)) {
total = '';
}
$('#total').html(total.toString());
displayQR('bitcoin:' + address + '?amount=' + total.toString());
}
function fetchExchangeRate() {
$.getJSON('ticker.php', function (data) {
if (data == null) {
$('#error').show();
} else {
exchange = 1000 / data.out;
exchange = exchange - exchange * commission * 0.01;
exchange = Math.ceil(exchange * 100) / 100;
$('#exchange').val(exchange.toFixed(2));
updateTotal();
$('#error').hide();
$('#calculator').fadeIn('slow');
}
});
setTimeout(fetchExchangeRate, 900000);
}
function setupSocket() {
setTimeout(setupSocket, 10000);
if (!websocket || websocket.readystate != 1) {
websocket = new WebSocket("ws://api.blockchain.info:8335/inv");
websocket.onopen = function() {
websocket.send('{"op":"addr_sub", "addr":"' + address + '"}');
fetchExchangeRate();
}
websocket.onerror = websocket.onclose = function() {
$('#calculator').hide();
$('#error').show();
};
websocket.onmessage = function(e) {
var results = eval('(' + e.data + ')');
var from_address = '';
var total = 0;
var received = 0;
$.each(results.x.out, function(i, v) {
if (v.addr == address) {
received += v.value / 100000000;
}
});
$.each(results.x.inputs, function(i, v) {
from_address = v.prev_out.addr
if (v.prev_out.addr == address) {
input -= v.prev_out.value / 100000000;
}
});
if (total <= received) {
$('#amount').blur();
$('#payment').hide();
$('#received').fadeIn('slow');
}
$.get('record_transaction.php',
{
address: from_address,
date: moment().format("YYYY-MM-DD HH:mm:ss"),
received: received,
exchange: exchange
}
);
}
}
}
});
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regexS = "[\\?&]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(window.location.search);
if(results == null)
return "";
else
return decodeURIComponent(results[1].replace(/\+/g, " "));
}
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