Maintain token prices using a background service

4 files changed, 6 insertions, 81 deletions

diff --git a/ui/app/actions.js b/ui/app/actions.js
index 6453a2bc2..46f34e149 100644
--- a/ui/app/actions.js
+++ b/ui/app/actions.js
@@ -220,10 +220,6 @@ var actions = {
   coinBaseSubview: coinBaseSubview,
   SHAPESHIFT_SUBVIEW: 'SHAPESHIFT_SUBVIEW',
   shapeShiftSubview: shapeShiftSubview,
-  UPDATE_CONTRACT_EXCHANGE_RATES: 'UPDATE_CONTRACT_EXCHANGE_RATES',
-  UPDATE_CONTRACT_EXCHANGE_RATE: 'UPDATE_CONTRACT_EXCHANGE_RATE',
-  updateContractExchangeRates,
-  updateContractExchangeRate,
   PAIR_UPDATE: 'PAIR_UPDATE',
   pairUpdate: pairUpdate,
   coinShiftRquest: coinShiftRquest,
@@ -1082,12 +1078,9 @@ function unlockMetamask (account) {
 }
 
 function updateMetamaskState (newState) {
-  return async dispatch => {
-    await dispatch({
-      type: actions.UPDATE_METAMASK_STATE,
-      value: newState,
-    })
-    dispatch(updateContractExchangeRates())
+  return {
+    type: actions.UPDATE_METAMASK_STATE,
+    value: newState,
   }
 }
 
@@ -1300,12 +1293,9 @@ function addTokens (tokens) {
 }
 
 function updateTokens (newTokens) {
-  return async dispatch => {
-    await dispatch({
-      type: actions.UPDATE_TOKENS,
-      newTokens,
-    })
-    dispatch(updateContractExchangeRates())
+  return {
+    type: actions.UPDATE_TOKENS,
+    newTokens,
   }
 }
 
@@ -1759,42 +1749,6 @@ function shapeShiftRequest (query, options, cb) {
   }
 }
 
-async function fetchContractRate (address) {
-  try {
-    const response = await fetch(`https://exchanges.balanc3.net/prices?from=${address}&to=ETH&autoConversion=false&summaryOnly=true`)
-    const json = await response.json()
-    const rate = json && json.length ? json[0].averagePrice : 0
-    return { address, rate }
-  } catch (error) { }
-}
-
-function updateContractExchangeRates () {
-  return async (dispatch, getState) => {
-    const { metamask: { tokens = [] } } = getState()
-    const newExchangeRates = {}
-
-    for (const i in tokens) {
-      const address = tokens[i].address
-      newExchangeRates[address] = (await fetchContractRate(address)).rate
-    }
-
-    dispatch({
-      type: actions.UPDATE_CONTRACT_EXCHANGE_RATES,
-      payload: { newExchangeRates },
-    })
-  }
-}
-
-function updateContractExchangeRate (address) {
-  return async dispatch => {
-    const { address, rate } = await fetchContractRate(address)
-    dispatch({
-      type: actions.UPDATE_CONTRACT_EXCHANGE_RATE,
-      payload: { address, rate },
-    })
-  }
-}
-
 function setFeatureFlag (feature, activated, notificationType) {
   return (dispatch) => {
     dispatch(actions.showLoadingIndication())
diff --git a/ui/app/components/send/send-v2-container.js b/ui/app/components/send/send-v2-container.js
index 75f16b382..adfc91240 100644
--- a/ui/app/components/send/send-v2-container.js
+++ b/ui/app/components/send/send-v2-container.js
@@ -66,7 +66,6 @@ function mapDispatchToProps (dispatch) {
     showCustomizeGasModal: () => dispatch(actions.showModal({ name: 'CUSTOMIZE_GAS' })),
     estimateGas: params => dispatch(actions.estimateGas(params)),
     getGasPrice: () => dispatch(actions.getGasPrice()),
-    updateContractExchangeRate: address => dispatch(actions.updateContractExchangeRate(address)),
     signTokenTx: (tokenAddress, toAddress, amount, txData) => (
       dispatch(actions.signTokenTx(tokenAddress, toAddress, amount, txData))
     ),
diff --git a/ui/app/reducers/metamask.js b/ui/app/reducers/metamask.js
index d6b6de3b0..1ed049be2 100644
--- a/ui/app/reducers/metamask.js
+++ b/ui/app/reducers/metamask.js
@@ -177,23 +177,6 @@ function reduceMetamask (state, action) {
         conversionDate: action.value.conversionDate,
       })
 
-    case actions.UPDATE_CONTRACT_EXCHANGE_RATES:
-      const { payload: { newExchangeRates } } = action
-      return {
-        ...metamaskState,
-        contractExchangeRates: newExchangeRates,
-      }
-
-    case actions.UPDATE_CONTRACT_EXCHANGE_RATE:
-      const { payload: { address, rate } } = action
-      return {
-        ...metamaskState,
-        contractExchangeRates: {
-          ...metamaskState.contractExchangeRates,
-          [address]: rate,
-        },
-      }
-
     case actions.UPDATE_TOKENS:
       return extend(metamaskState, {
         tokens: action.newTokens,
diff --git a/ui/app/send-v2.js b/ui/app/send-v2.js
index 12cf55f62..30d3d3152 100644
--- a/ui/app/send-v2.js
+++ b/ui/app/send-v2.js
@@ -88,17 +88,6 @@ SendTransactionScreen.prototype.updateSendTokenBalance = function (usersToken) {
 }
 
 SendTransactionScreen.prototype.componentWillMount = function () {
-  const {
-    updateContractExchangeRate,
-    selectedToken = {},
-  } = this.props
-
-  const { address } = selectedToken || {}
-
-  if (address) {
-    updateContractExchangeRate(address)
-  }
-
   this.updateGas()
 }