From 398aff3af793ba17cf5ce51156290574e28643eb Mon Sep 17 00:00:00 2001
From: Iuri Matias <iuri.matias@gmail.com>
Date: Sat, 21 Oct 2017 14:21:18 -0400
Subject: [PATCH] fix multiple issues with multiple file writes

---
 lib/contracts/code_generator.js | 19 ++++++++-----------
 lib/core/events.js              |  7 +++++++
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/lib/contracts/code_generator.js b/lib/contracts/code_generator.js
index 16a58a59..1468b029 100644
--- a/lib/contracts/code_generator.js
+++ b/lib/contracts/code_generator.js
@@ -28,28 +28,28 @@ class CodeGenerator {
     let self = this;
 
     // deprecated events; to remove in embark 2.7.0
-    this.events.setCommandHandler('abi-vanila', function(cb) {
+    this.events.setCommandHandlerOnce('abi-vanila', function(cb) {
       let vanillaABI = self.generateABI({useEmbarkJS: false});
       let contractsJSON = self.generateContractsJSON();
 
       cb(vanillaABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('abi', function(cb) {
+    this.events.setCommandHandlerOnce('abi', function(cb) {
       let embarkJSABI = self.generateABI({useEmbarkJS: true});
       let contractsJSON = self.generateContractsJSON();
 
       cb(embarkJSABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('abi-contracts-vanila', function(cb) {
+    this.events.setCommandHandlerOnce('abi-contracts-vanila', function(cb) {
       let vanillaContractsABI = self.generateContracts(false, true, false);
       let contractsJSON = self.generateContractsJSON();
 
       cb(vanillaContractsABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('abi-vanila-deployment', function(cb) {
+    this.events.setCommandHandlerOnce('abi-vanila-deployment', function(cb) {
       let vanillaABI = self.generateABI({useEmbarkJS: false, deployment: true});
       let contractsJSON = self.generateContractsJSON();
 
@@ -57,35 +57,34 @@ class CodeGenerator {
     });
 
     // new events
-    this.events.setCommandHandler('code-vanila', function(cb) {
+    this.events.setCommandHandlerOnce('code-vanila', function(cb) {
       let vanillaABI = self.generateABI({useEmbarkJS: false});
       let contractsJSON = self.generateContractsJSON();
 
       cb(vanillaABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('code', function(cb) {
+    this.events.setCommandHandlerOnce('code', function(cb) {
       let embarkJSABI = self.generateABI({useEmbarkJS: true});
       let contractsJSON = self.generateContractsJSON();
 
       cb(embarkJSABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('code-contracts-vanila', function(cb) {
+    this.events.setCommandHandlerOnce('code-contracts-vanila', function(cb) {
       let vanillaContractsABI = self.generateContracts(false, true, false);
       let contractsJSON = self.generateContractsJSON();
 
       cb(vanillaContractsABI, contractsJSON);
     });
 
-    this.events.setCommandHandler('code-vanila-deployment', function(cb) {
+    this.events.setCommandHandlerOnce('code-vanila-deployment', function(cb) {
       let vanillaABI = self.generateABI({useEmbarkJS: false, deployment: true});
       let contractsJSON = self.generateContractsJSON();
 
       cb(vanillaABI, contractsJSON);
     });
 
-
   }
 
   generateProvider(isDeployment) {
@@ -222,8 +221,6 @@ class CodeGenerator {
       result += Templates.exec_when_env_loaded({block: block});
     }
 
-    console.log(result);
-
     return result;
   }
 
diff --git a/lib/core/events.js b/lib/core/events.js
index 425574e9..f7f055fc 100644
--- a/lib/core/events.js
+++ b/lib/core/events.js
@@ -42,4 +42,11 @@ EventEmitter.prototype.setCommandHandler = function(requestName, cb) {
   });
 };
 
+EventEmitter.prototype.setCommandHandlerOnce = function(requestName, cb) {
+  log("setting command handler for: ", requestName);
+  return this.once('request:' + requestName, function(_cb) {
+    cb.call(this, _cb);
+  });
+};
+
 module.exports = EventEmitter;