From a45cb754358ff798dce25fa0b44d6b182abc7692 Mon Sep 17 00:00:00 2001
From: frankiebee <frankie.diamond@gmail.com>
Date: Tue, 1 May 2018 13:57:43 -0700
Subject: transactions - add a nonce check utility for ui use

---
 app/scripts/controllers/transactions/index.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'app/scripts/controllers/transactions/index.js')

diff --git a/app/scripts/controllers/transactions/index.js b/app/scripts/controllers/transactions/index.js
index 541f1db73..a1588cfef 100644
--- a/app/scripts/controllers/transactions/index.js
+++ b/app/scripts/controllers/transactions/index.js
@@ -111,6 +111,21 @@ class TransactionController extends EventEmitter {
     this.txStateManager.wipeTransactions(address)
   }
 
+  /**
+    Check if a txMeta in the list with the same nonce has been confirmed in a block
+    if the txParams dont have a nonce will return false
+    @returns {boolean} weather the nonce has been used in a transaction confirmed in a block
+    @param {object} txMeta - the txMeta object
+  */
+  async isNonceTaken (txMeta) {
+    const { from, nonce } = txMeta.txParams
+    if ('nonce' in txMeta.txParams) {
+      const sameNonceTxList = this.txStateManager.getFilteredTxList({from, nonce, status: 'confirmed'})
+      return (sameNonceTxList.length >= 1)
+    }
+    return false
+  }
+
   /**
   add a new unapproved transaction to the pipeline
 
-- 
cgit