select appropriate Bitcore when building/signing tx proposal

lib/model/txproposal.js

@@ -7,7 +7,10 @@ var log = require('npmlog');
 log.debug = log.verbose;
 log.disableColor();
 
-var Bitcore = require('bitcore-lib');
+var Bitcore = {
+  'btc': require('bitcore-lib'),
+  'bch': require('bitcore-lib-cash'),
+};
 
 var Common = require('../common');
 var Constants = Common.Constants,
@@ -139,7 +142,7 @@ TxProposal.prototype._updateStatus = function() {
 TxProposal.prototype._buildTx = function() {
   var self = this;
 
-  var t = new Bitcore.Transaction();
+  var t = new Bitcore[self.coin].Transaction();
 
   $.checkState(Utils.checkValueInCollection(self.addressType, Constants.SCRIPT_TYPES));
 
@@ -158,7 +161,7 @@ TxProposal.prototype._buildTx = function() {
   _.each(self.outputs, function(o) {
     $.checkState(o.script || o.toAddress, 'Output should have either toAddress or script specified');
     if (o.script) {
-      t.addOutput(new Bitcore.Transaction.Output({
+      t.addOutput(new Bitcore[self.coin].Transaction.Output({
         script: o.script,
         satoshis: o.amount
       }));
@@ -322,21 +325,23 @@ TxProposal.prototype.addAction = function(copayerId, type, comment, signatures,
 TxProposal.prototype._addSignaturesToBitcoreTx = function(tx, signatures, xpub) {
   var self = this;
 
+  var bitcore = Bitcore[self.coin];
+
   if (signatures.length != this.inputs.length)
     throw new Error('Number of signatures does not match number of inputs');
 
   var i = 0,
-    x = new Bitcore.HDPublicKey(xpub);
+    x = new bitcore.HDPublicKey(xpub);
 
   _.each(signatures, function(signatureHex) {
     var input = self.inputs[i];
     try {
-      var signature = Bitcore.crypto.Signature.fromString(signatureHex);
+      var signature = bitcore.crypto.Signature.fromString(signatureHex);
       var pub = x.deriveChild(self.inputPaths[i]).publicKey;
       var s = {
         inputIndex: i,
         signature: signature,
-        sigtype: Bitcore.crypto.Signature.SIGHASH_ALL,
+        sigtype: bitcore.crypto.Signature.SIGHASH_ALL,
         publicKey: pub,
       };
       tx.inputs[i].addSignature(tx, s);

lib/model/txproposal_legacy.js

@@ -54,6 +54,7 @@ TxProposal.fromObj = function(obj) {
     return TxProposalAction.fromObj(action);
   });
   x.outputOrder = obj.outputOrder;
+  x.coin = obj.coin || Defaults.COIN;
   x.network = obj.network;
   x.fee = obj.fee;
   x.feePerKb = obj.feePerKb;

test/integration/helpers.js

@@ -13,6 +13,10 @@ var tingodb = require('tingodb')({
 });
 
 var Bitcore = require('bitcore-lib');
+var Bitcore_ = {
+  btc: Bitcore,
+  bch: require('bitcore-lib-cash')
+};
 
 var Common = require('../../lib/common');
 var Utils = Common.Utils;