Enable SendMax to top up debit card

src/js/controllers/amount.js

@@ -22,7 +22,8 @@ angular.module('copayApp.controllers').controller('amountController', function($
     $scope.currency = data.stateParams.currency;
     $scope.forceCurrency = data.stateParams.forceCurrency;
 
-    $scope.showMenu = $ionicHistory.backView() && $ionicHistory.backView().stateName == 'tabs.send';
+    $scope.showMenu = $ionicHistory.backView() && ($ionicHistory.backView().stateName == 'tabs.send' || 
+      $ionicHistory.backView().stateName == 'tabs.bitpayCard');
     $scope.recipientType = data.stateParams.recipientType || null;
     $scope.toAddress = data.stateParams.toAddress;
     $scope.toName = data.stateParams.toName;
@@ -111,15 +112,8 @@ angular.module('copayApp.controllers').controller('amountController', function($
 
   $scope.sendMax = function() {
     $scope.showSendMax = false;
-    $state.transitionTo('tabs.send.confirm', {
+    $scope.useSendMax = true;
-      recipientType: $scope.recipientType,
+    $scope.finish();
-      toAmount: null,
-      toAddress: $scope.toAddress,
-      toName: $scope.toName,
-      toEmail: $scope.toEmail,
-      toColor: $scope.toColor,
-      useSendMax: true,
-    });
   };
 
   $scope.toggleAlternative = function() {
@@ -234,8 +228,9 @@ angular.module('copayApp.controllers').controller('amountController', function($
     if ($scope.nextStep) {
       $state.transitionTo($scope.nextStep, {
         id: _cardId,
-        amount: _amount,
+        amount: $scope.useSendMax ? null : _amount,
-        currency: $scope.showAlternativeAmount ? $scope.alternativeIsoCode : $scope.unitName
+        currency: $scope.showAlternativeAmount ? $scope.alternativeIsoCode : $scope.unitName,
+        useSendMax: $scope.useSendMax
       });
     } else {
       var amount = $scope.showAlternativeAmount ? fromFiat(_amount) : _amount;
@@ -247,11 +242,12 @@ angular.module('copayApp.controllers').controller('amountController', function($
       } else {
         $state.transitionTo('tabs.send.confirm', {
           recipientType: $scope.recipientType,
-          toAmount: (amount * unitToSatoshi).toFixed(0),
+          toAmount: $scope.useSendMax ? null : (amount * unitToSatoshi).toFixed(0),
           toAddress: $scope.toAddress,
           toName: $scope.toName,
           toEmail: $scope.toEmail,
           toColor: $scope.toColor,
+          useSendMax: $scope.useSendMax
         });
       }
     }

src/js/controllers/topup.js

@@ -1,10 +1,11 @@
 'use strict';
 
-angular.module('copayApp.controllers').controller('topUpController', function($scope, $log, $state, $timeout, $ionicHistory, lodash, popupService, profileService, ongoingProcess, walletService, configService, platformInfo, bitpayService, bitpayCardService, payproService, bwcError, txFormatService) {
+angular.module('copayApp.controllers').controller('topUpController', function($scope, $log, $state, $timeout, $ionicHistory, lodash, popupService, profileService, ongoingProcess, walletService, configService, platformInfo, bitpayService, bitpayCardService, payproService, bwcError, txFormatService, sendMaxService) {
 
   var amount;
   var currency;
   var cardId;
+  var sendMax;
 
   $scope.isCordova = platformInfo.isCordova;
 
@@ -51,6 +52,7 @@ angular.module('copayApp.controllers').controller('topUpController', function($s
 
   $scope.$on("$ionicView.beforeEnter", function(event, data) {
     cardId = data.stateParams.id;
+    sendMax = data.stateParams.useSendMax;
 
     if (!cardId) {
       showErrorAndBack('No card selected');
@@ -188,6 +190,29 @@ angular.module('copayApp.controllers').controller('topUpController', function($s
 
   $scope.onWalletSelect = function(wallet) {
     $scope.wallet = wallet;
+    if (sendMax) {
+      ongoingProcess.set('retrievingInputs', true);
+      sendMaxService.getInfo($scope.wallet, function(err, values) {
+        ongoingProcess.set('retrievingInputs', false);
+        if (err) {
+          showErrorAndBack(err);
+          return;
+        }
+        var config = configService.getSync().wallet.settings;
+        var unitName = config.unitName;
+        var amountUnit = txFormatService.satToUnit(values.amount);
+        var parsedAmount = txFormatService.parseAmount(
+          amountUnit, 
+          unitName);
+
+        amount = parsedAmount.amount;
+        currency = parsedAmount.currency;
+        $scope.amountUnitStr = parsedAmount.amountUnitStr;
+        $timeout(function() {
+          $scope.$digest();
+        }, 100);
+      });
+    }
   };
 
   $scope.goBackHome = function() {

src/js/routes.js

@@ -1103,7 +1103,8 @@ angular.module('copayApp').config(function(historicLogProvider, $provide, $logPr
         },
         params: {
           id: null,
-          currency: 'USD'
+          currency: 'USD',
+          useSendMax: null
         }
       })
       .state('tabs.bitpayCard.amount', {

src/js/services/sendMax.js

@@ -0,0 +1,36 @@
+'use strict';
+
+angular.module('copayApp.services').service('sendMaxService', function(feeService, configService, walletService) {
+
+  /**
+   * Get sendMaxInfo
+   *
+   * @param {Obj} Wallet
+   * @param {Callback} Function (optional)
+   *
+   */
+  this.getInfo = function(wallet, cb) {
+    feeService.getCurrentFeeValue(wallet.credentials.network, function(err, feePerKb) {
+      if (err) return cb(err);
+      
+      var config = configService.getSync().wallet;
+
+      walletService.getSendMaxInfo(wallet, {
+        feePerKb: feePerKb,
+        excludeUnconfirmedUtxos: !config.spendUnconfirmed,
+        returnInputs: true,
+      }, function(err, resp) {
+        if (err) return cb(err);
+
+        return cb(null, {
+          sendMax: true,
+          amount: resp.amount,
+          inputs: resp.inputs,
+          fee: resp.fee,
+          feePerKb: feePerKb,
+        });
+      });
+    });
+  };
+
+});

src/js/services/txFormatService.js

@@ -184,5 +184,13 @@ angular.module('copayApp.services').factory('txFormatService', function($filter,
     };
   };
 
+  root.satToUnit = function(amount) {
+    var config = configService.getSync().wallet.settings;
+    var unitToSatoshi = config.unitToSatoshi;
+    var satToUnit = 1 / unitToSatoshi;
+    var unitDecimals = config.unitDecimals;
+    return parseFloat((amount * satToUnit).toFixed(unitDecimals));
+  };
+
   return root;
 });