Prevent duplicate transaction logging

2 files changed, 22 insertions, 14 deletions

diff --git a/public/js/calculator.coffee b/public/js/calculator.coffee
index 9583a018..407a80f5 100644
--- a/public/js/calculator.coffee
+++ b/public/js/calculator.coffee
@@ -8,6 +8,7 @@ g = exports ? this
 g.errors = []
 g.amount_requested = 0
 g.tip = 1
+g.transactions = []
 
 $(->
   $.ajax(
@@ -147,13 +148,15 @@ logTransaction = (txid, amount) ->
     $('#success')[0].play()
     g.user.index++
 
-    $.post("/#{g.user.username}/transactions",
-      txid: txid,
-      address: g.user.address,
-      date: moment().format("YYYY-MM-DD HH:mm:ss"),
-      received: amount,
-      exchange: g.exchange
-    )
+    if g.transactions.indexOf(txid) is -1
+      g.transactions.push(txid)
+      $.post("/#{g.user.username}/transactions",
+        txid: txid,
+        address: g.user.address,
+        date: moment().format("YYYY-MM-DD HH:mm:ss"),
+        received: amount,
+        exchange: g.exchange
+      )
 
     getAddress()
 
diff --git a/public/js/calculator.js b/public/js/calculator.js
index 4d0491cf..2808ad64 100644
--- a/public/js/calculator.js
+++ b/public/js/calculator.js
@@ -18,6 +18,8 @@
 
   g.tip = 1;
 
+  g.transactions = [];
+
   $(function() {
     $.ajax({
       url: $('#user').val() + '.json',
@@ -169,13 +171,16 @@
       $('#received').fadeIn('slow');
       $('#success')[0].play();
       g.user.index++;
-      $.post("/" + g.user.username + "/transactions", {
-        txid: txid,
-        address: g.user.address,
-        date: moment().format("YYYY-MM-DD HH:mm:ss"),
-        received: amount,
-        exchange: g.exchange
-      });
+      if (g.transactions.indexOf(txid) === -1) {
+        g.transactions.push(txid);
+        $.post("/" + g.user.username + "/transactions", {
+          txid: txid,
+          address: g.user.address,
+          date: moment().format("YYYY-MM-DD HH:mm:ss"),
+          received: amount,
+          exchange: g.exchange
+        });
+      }
       return getAddress();
     }
   };