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1 files changed, 157 insertions, 0 deletions

diff --git a/public/js/bitcoin_pos.js b/public/js/bitcoin_pos.js
new file mode 100644
index 00000000..5d8f551b
--- /dev/null
+++ b/public/js/bitcoin_pos.js
@@ -0,0 +1,157 @@
+$(function() {
+  var websocket = null;
+  var client = getParameterByName('client');
+  var title = getParameterByName('title');
+  var address = getParameterByName('address');
+  var commission = getParameterByName('commission');
+  var logo = getParameterByName('logo');
+  var exchange = 0;
+
+  setupPage();
+  setupQR();
+  setupSocket();
+
+  if (client != "") {
+    $.getJSON('client.json', { name: client }, function(data) {
+      title = data.title; 
+      address = data.address; 
+      commission = data.commission; 
+      logo = data.logo; 
+      setupPage();
+    });
+  }
+
+  $('#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 exchangeFail() {
+    $('#error').show().html("Error fetching exchange rate");
+    $('#calculator').hide();
+  }
+
+  function fetchExchangeRate() {
+    $.getJSON('ticker.php') 
+      .success(function (data) {
+        if (data == null) {
+          exchangeFail();
+          return;
+        }
+
+        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');
+      }
+    ).error(exchangeFail);
+
+    setTimeout(fetchExchangeRate, 900000);
+  }
+
+  function setupPage() {
+    if (address == "")
+      address = '1VAnbtCAnYccECnjaMCPnWwt81EHCVgNr'
+
+    if (commission == "")
+      commission = 3;
+
+    if (logo != "") 
+      $('#logo').attr('src', logo).show();
+    else
+      $('#title').html(title);
+
+    $('#address').html(address);
+    $('#received').hide();
+  }
+
+  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().html("Error connecting to payment server");
+      };
+
+      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, " "));
+}