added support for the wallet backups

js/controllers/backup.js

@@ -1,13 +1,65 @@
 'use strict';
 
 angular.module('copay.backup').controller('BackupController',
-  function($scope, $rootScope, $location) {
-
+  function($scope, $rootScope, $location, $window, $timeout) {
 
     if (!$rootScope.wallet.id) {
       $location.path('signin');
     }
 
-
     $scope.title = 'Backup';
+
+    var filename = $rootScope.wallet.id + '.json.aes';
+
+    // TODO: get the real encrypted wallet.
+    var _getEncryptedWallet = function() {
+      var wallet = JSON.stringify($rootScope.wallet.toObj());
+      return wallet;
+    };
+
+    var _getWalletBlob = function() {
+      var wallet = _getEncryptedWallet();
+      var blob = new Blob([wallet], {type: 'text/plain;charset=utf-8'});
+
+      return blob;
+    };
+
+    $scope.download = function() {
+      var blob = _getWalletBlob();
+      saveAs(blob, filename);
+    };
+
+    $scope.dropbox = function() { 
+      var blob = _getWalletBlob();
+      var url = $window.URL.createObjectURL(blob);
+
+      // TODO: send the blob to Dropbox, (if we can...)
+    };
+
+    $scope.email = function() {
+      var email = prompt('Please enter your email addres.');
+      var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
+
+      if (!email.match(mailformat)) {
+        alert('Enter a valid email address');
+      } else {
+        if (email && email !== '') {
+          var body = _getEncryptedWallet();
+          console.log(body);
+          var subject = 'Copay Backup'; 
+          var href = 'mailto:' + email + '?'
+           + 'subject=' + subject + '&'
+           + 'body=' + 'body'; // TODO: Uncomment this when get the real encrypted wallet.
+
+          var newWin = $window.open(href, '_blank', 'scrollbars=yes,resizable=yes,width=10,height=10');
+
+          if (newWin) {
+            $timeout(function() {
+              newWin.close();
+            }, 1000);
+          }
+        }
+      }
+    };
+  
   });