1 files changed, 57 insertions, 0 deletions
diff --git a/ui/app/helpers/transactions.util.js b/ui/app/helpers/transactions.util.js
new file mode 100644
index 000000000..04cef150f
--- /dev/null
+++ b/ui/app/helpers/transactions.util.js
@@ -0,0 +1,57 @@
+import ethUtil from 'ethereumjs-util'
+import MethodRegistry from 'eth-method-registry'
+const registry = new MethodRegistry({ provider: global.ethereumProvider })
+
+import {
+  TOKEN_METHOD_TRANSFER,
+  TOKEN_METHOD_APPROVE,
+  TOKEN_METHOD_TRANSFER_FROM,
+  SEND_ETHER_ACTION_KEY,
+  DEPLOY_CONTRACT_ACTION_KEY,
+  APPROVE_ACTION_KEY,
+  SEND_TOKEN_ACTION_KEY,
+  TRANSFER_FROM_ACTION_KEY,
+} from '../constants/transactions'
+
+export function isConfirmDeployContract (txData = {}) {
+  const { txParams = {} } = txData
+  return !txParams.to
+}
+
+export function getTransactionActionKey (transaction, methodData) {
+  const { txParams: { data } = {} } = transaction
+
+  if (isConfirmDeployContract(transaction)) {
+    return DEPLOY_CONTRACT_ACTION_KEY
+  }
+
+  if (data) {
+    const { name } = methodData
+    const methodName = name && name.toLowerCase()
+
+    switch (methodName) {
+      case TOKEN_METHOD_TRANSFER:
+        return SEND_TOKEN_ACTION_KEY
+      case TOKEN_METHOD_APPROVE:
+        return APPROVE_ACTION_KEY
+      case TOKEN_METHOD_TRANSFER_FROM:
+        return TRANSFER_FROM_ACTION_KEY
+      default:
+        return name
+    }
+  } else {
+    return SEND_ETHER_ACTION_KEY
+  }
+}
+
+export async function getMethodData (data = {}) {
+  const prefixedData = ethUtil.addHexPrefix(data)
+  const fourBytePrefix = prefixedData.slice(0, 10)
+  const sig = await registry.lookup(fourBytePrefix)
+  const parsedResult = registry.parse(sig)
+
+  return {
+    name: parsedResult.name,
+    params: parsedResult.args,
+  }
+}