Group inputs by address

index.html

@@ -468,7 +468,7 @@
                 </div>
                 <div class="tx-copayers">
                   <div class="large-5 columns">
-                    <div ng-repeat="vin in btx.vin">
+                    <div ng-repeat="vin in btx.vin | groupByAddress">
                       <p class="left text-gray size-12"> {{vin.addr}} </p>
                       <small class="right">{{vin.value}}</small>
                     </div>

js/filters.js

@@ -2,7 +2,21 @@
 
 angular.module('copay.filters', [])
 	.filter('amTimeAgo', ['amMoment', function(amMoment) {
-  return function(input) {
-    return amMoment.preprocessDate(input).fromNow();
-  };
-}]);
+    return function(input) {
+      return amMoment.preprocessDate(input).fromNow();
+    };
+  }])
+  .filter('groupByAddress', function() {
+    return function(inputs) {
+      function reduce(dic, input) {
+        if(!dic[input.addr]) dic[input.addr] = 0;
+        dic[input.addr] += input.value;
+        return dic;
+      }
+
+      var dic = inputs.reduce(reduce, {});
+      return Object.keys(dic).map(function(key) {
+        return { addr: key, value: dic[key] };
+      });
+    };
+  });