add to low amount to incoming TXs

src/js/services/feeService.js

@@ -4,6 +4,7 @@ angular.module('copayApp.services').factory('feeService', function($log, $timeou
   var root = {};
 
   var CACHE_TIME_TS = 60; // 1 min
+  var LOW_AMOUNT_RATIO = 0.15; //Ratio low amount warning (econ fee/amount)
 
   // Constant fee options to translate
   root.feeOpts = {
@@ -43,7 +44,7 @@ angular.module('copayApp.services').factory('feeService', function($log, $timeou
 
       var feeRate = feeLevelRate.feePerKB;
 
-      if (!fromCache) $log.debug('Dynamic fee: ' + feeLevel + '/' + network +' ' +  (feeLevelRate.feePerKB / 1000).toFixed() + ' SAT/B');
+      if (!fromCache) $log.debug('Dynamic fee: ' + feeLevel + '/' + network + ' ' + (feeLevelRate.feePerKB / 1000).toFixed() + ' SAT/B');
 
       return cb(null, feeRate);
     });
@@ -55,8 +56,8 @@ angular.module('copayApp.services').factory('feeService', function($log, $timeou
 
   root.getFeeLevels = function(cb) {
 
-    if (cache.updateTs > Date.now() - CACHE_TIME_TS * 1000 ) {
-      $timeout( function() {
+    if (cache.updateTs > Date.now() - CACHE_TIME_TS * 1000) {
+      $timeout(function() {
         return cb(null, cache.data, true);
       }, 1);
     }
@@ -70,7 +71,7 @@ angular.module('copayApp.services').factory('feeService', function($log, $timeou
           return cb(gettextCatalog.getString('Could not get dynamic fee'));
         }
 
-        cache.updateTs =Date.now();
+        cache.updateTs = Date.now();
         cache.data = {
           'livenet': levelsLivenet,
           'testnet': levelsTestnet
@@ -81,5 +82,52 @@ angular.module('copayApp.services').factory('feeService', function($log, $timeou
     });
   };
 
+
+  // These 2 functions were taken from
+  // https://github.com/bitpay/bitcore-wallet-service/blob/master/lib/model/txproposal.js#L243
+
+  function getEstimatedSizeForSingleInput(wallet) {
+    switch (wallet.credentials.addressType) {
+      case 'P2PKH':
+        return 147;
+      default:
+      case 'P2SH':
+        return wallet.m * 72 + wallet.n * 36 + 44;
+    }
+  };
+
+
+  function getEstimatedSize(wallet) {
+    // Note: found empirically based on all multisig P2SH inputs and within m & n allowed limits.
+    var safetyMargin = 0.02;
+
+    var overhead = 4 + 4 + 9 + 9;
+    var inputSize = getEstimatedSizeForSingleInput(wallet);
+    var outputSize = 34;
+    var nbInputs = 1; //Assume 1 input
+    var nbOutputs = 2; // Assume 2 outputs
+
+    var size = overhead + inputSize * nbInputs + outputSize * nbOutputs;
+    return parseInt((size * (1 + safetyMargin)).toFixed(0));
+  };
+
+
+  // Approx utxo amount, from which the uxto is economically redeemable  
+  root.getLowAmount = function(wallet, cb) {
+    root.getFeeLevels(function(err, levels) {
+      if (err) return cb(err);
+
+      var lowLevelRate = (lodash.find(levels[wallet.network], {
+        level: 'economy',
+      }).feePerKB / 1000).toFixed(0);
+
+      var size = getEstimatedSize(wallet);
+
+      var minFee = size * lowLevelRate;
+
+      return cb(null, parseInt(minFee / (LOW_AMOUNT_RATIO)));
+    });
+  };
+
   return root;
 });

src/js/services/profileService.js

@@ -90,6 +90,8 @@ angular.module('copayApp.services')
       wallet.m = wallet.credentials.m;
       wallet.n = wallet.credentials.n;
 
+      wallet.lowAmount = 
+
       root.updateWalletSettings(wallet);
       root.wallet[walletId] = wallet;
 

src/js/services/txFormatService.js

@@ -93,6 +93,11 @@ angular.module('copayApp.services').factory('txFormatService', function($filter,
     tx.alternativeAmountStr = root.formatAlternativeStr(tx.amount);
     tx.feeStr = root.formatAmountStr(tx.fee || tx.fees);
 
+    if (tx.amountStr) {
+      tx.amountValueStr = tx.amountStr.split(' ')[0];
+      tx.amountUnitStr = tx.amountStr.split(' ')[1];
+    }
+
     return tx;
   };
 

src/js/services/walletService.js

@@ -413,7 +413,6 @@ angular.module('copayApp.services').factory('walletService', function($log, $tim
 
       $log.debug('Fixing Tx Cache Unit to:' + name)
       lodash.each(txs, function(tx) {
-
         tx.amountStr = txFormatService.formatAmount(tx.amount) + name;
         tx.feeStr = txFormatService.formatAmount(tx.fees) + name;
       });
@@ -511,6 +510,15 @@ angular.module('copayApp.services').factory('walletService', function($log, $tim
           });
         }
 
+        function updateLowAmount(txs) {
+          if (!opts.lowAmount) return;
+          lodash.each(txs, function(tx) {
+            tx.lowAmount = tx.amount < opts.lowAmount;
+          });
+        };
+
+        updateLowAmount(txs);
+
         updateNotes(function() {
 
           // <HACK>
@@ -567,9 +575,9 @@ angular.module('copayApp.services').factory('walletService', function($log, $tim
 
   root.getTx = function(wallet, txid, cb) {
 
-    function finish(list){
+    function finish(list) {
       var tx = lodash.find(list, {
-          txid: txid
+        txid: txid
       });
 
       if (!tx) return cb('Could not get transaction');
@@ -602,7 +610,7 @@ angular.module('copayApp.services').factory('walletService', function($log, $tim
     });
   };
 
- 
+
 
   root.getTxHistory = function(wallet, opts, cb) {
     opts = opts || {};