generate an abi file compatible with mist and metamask

Author: iurimatias

lib/deploy.js

@@ -193,16 +193,20 @@ Deploy.prototype.execute_cmds = function(cmds) {
     console.log("executing: " + cmd);
     eval(cmd);
   }
-}
+};
 
 Deploy.prototype.generate_provider_file = function() {
   var result = "";
-  result += "var web3 = new Web3();";
-  result += "web3.setProvider(new web3.providers.HttpProvider('http://" + this.blockchainConfig.rpcHost + ":" + this.blockchainConfig.rpcPort + "'));";
+
+  result += "if (typeof web3 !== 'undefined' && typeof Web3 !== 'undefined') {";
+  result += 'web3 = new Web3(web3.currentProvider);';
+  result += "} else if (typeof Web3 !== 'undefined') {";
+  result += 'web3 = new Web3(new Web3.providers.HttpProvider("http://' + this.blockchainConfig.rpcHost + ':' + this.blockchainConfig.rpcPort + '"));';
+  result += '}';
   result += "web3.eth.defaultAccount = web3.eth.accounts[0];";
 
   return result;
-}
+};
 
 Deploy.prototype.generate_abi_file = function() {
   var result = "";