Send metrics event from backend for on chain transaction failures (#6500)

* Send metrics event from backend for on chain transaction failures

* Passes state object to backEndMetaMetricsEvent, and adds getMetaMetricState selector

3 files changed, 17 insertions, 4 deletions

diff --git a/ui/app/ducks/confirm-transaction/confirm-transaction.duck.js b/ui/app/ducks/confirm-transaction/confirm-transaction.duck.js
index 169c9d543..58b0ec8e8 100644
--- a/ui/app/ducks/confirm-transaction/confirm-transaction.duck.js
+++ b/ui/app/ducks/confirm-transaction/confirm-transaction.duck.js
@@ -375,7 +375,7 @@ export function setTransactionToConfirm (transactionId) {
         dispatch(updateMethodData(methodData))
 
         try {
-          const toSmartContract = await isSmartContractAddress(to)
+          const toSmartContract = await isSmartContractAddress(to || '')
           dispatch(updateToSmartContract(toSmartContract))
         } catch (error) {
           log.error(error)
diff --git a/ui/app/helpers/utils/metametrics.util.js b/ui/app/helpers/utils/metametrics.util.js
index 5ae3e8937..62f5fd760 100644
--- a/ui/app/helpers/utils/metametrics.util.js
+++ b/ui/app/helpers/utils/metametrics.util.js
@@ -124,10 +124,10 @@ function composeUrl (config, permissionPreferences = {}) {
     numberOfTokens: customVariables && customVariables.numberOfTokens || numberOfTokens,
     numberOfAccounts: customVariables && customVariables.numberOfAccounts || numberOfAccounts,
   }) : ''
-  const url = configUrl || `&url=${encodeURIComponent(currentPath.replace(/chrome-extension:\/\/\w+/, METAMETRICS_TRACKING_URL))}`
+  const url = configUrl || currentPath ? `&url=${encodeURIComponent(currentPath.replace(/chrome-extension:\/\/\w+/, METAMETRICS_TRACKING_URL))}` : ''
   const _id = metaMetricsId && !excludeMetaMetricsId ? `&_id=${metaMetricsId.slice(2, 18)}` : ''
   const rand = `&rand=${String(Math.random()).slice(2)}`
-  const pv_id = `&pv_id=${ethUtil.bufferToHex(ethUtil.sha3(url || currentPath.match(/chrome-extension:\/\/\w+\/(.+)/)[0])).slice(2, 8)}`
+  const pv_id = (url || currentPath) && `&pv_id=${ethUtil.bufferToHex(ethUtil.sha3(url || currentPath.match(/chrome-extension:\/\/\w+\/(.+)/)[0])).slice(2, 8)}` || ''
   const uid = metaMetricsId && !excludeMetaMetricsId
     ? `&uid=${metaMetricsId.slice(2, 18)}`
     : excludeMetaMetricsId
diff --git a/ui/app/selectors/selectors.js b/ui/app/selectors/selectors.js
index 2d25aa156..ce02d067e 100644
--- a/ui/app/selectors/selectors.js
+++ b/ui/app/selectors/selectors.js
@@ -48,6 +48,7 @@ const selectors = {
   getNumberOfAccounts,
   getNumberOfTokens,
   isEthereumNetwork,
+  getMetaMetricState,
 }
 
 module.exports = selectors
@@ -165,7 +166,7 @@ function getSelectedToken (state) {
   const tokens = state.metamask.tokens || []
   const selectedTokenAddress = state.metamask.selectedTokenAddress
   const selectedToken = tokens.filter(({ address }) => address === selectedTokenAddress)[0]
-  const sendToken = state.metamask.send.token
+  const sendToken = state.metamask.send && state.metamask.send.token
 
   return selectedToken || sendToken || null
 }
@@ -314,3 +315,15 @@ function preferencesSelector ({ metamask }) {
 function getAdvancedInlineGasShown (state) {
   return Boolean(state.metamask.featureFlags.advancedInlineGas)
 }
+
+function getMetaMetricState (state) {
+  return {
+    network: getCurrentNetworkId(state),
+    activeCurrency: getSelectedAsset(state),
+    accountType: getAccountType(state),
+    metaMetricsId: state.metamask.metaMetricsId,
+    numberOfTokens: getNumberOfTokens(state),
+    numberOfAccounts: getNumberOfAccounts(state),
+    participateInMetaMetrics: state.metamask.participateInMetaMetrics,
+  }
+}