1 files changed, 189 insertions, 0 deletions

diff --git a/ui/app/selectors.js b/ui/app/selectors.js
new file mode 100644
index 000000000..5d2635775
--- /dev/null
+++ b/ui/app/selectors.js
@@ -0,0 +1,189 @@
+const valuesFor = require('./util').valuesFor
+const abi = require('human-standard-token-abi')
+
+const {
+  multiplyCurrencies,
+} = require('./conversion-util')
+
+const selectors = {
+  getSelectedAddress,
+  getSelectedIdentity,
+  getSelectedAccount,
+  getSelectedToken,
+  getSelectedTokenExchangeRate,
+  getTokenExchangeRate,
+  conversionRateSelector,
+  transactionsSelector,
+  accountsWithSendEtherInfoSelector,
+  getCurrentAccountWithSendEtherInfo,
+  getGasPrice,
+  getGasLimit,
+  getAddressBook,
+  getSendFrom,
+  getCurrentCurrency,
+  getSendAmount,
+  getSelectedTokenToFiatRate,
+  getSelectedTokenContract,
+  autoAddToBetaUI,
+  getSendMaxModeState,
+  getCurrentViewContext,
+}
+
+module.exports = selectors
+
+function getSelectedAddress (state) {
+  const selectedAddress = state.metamask.selectedAddress || Object.keys(state.metamask.accounts)[0]
+
+  return selectedAddress
+}
+
+function getSelectedIdentity (state) {
+  const selectedAddress = getSelectedAddress(state)
+  const identities = state.metamask.identities
+
+  return identities[selectedAddress]
+}
+
+function getSelectedAccount (state) {
+  const accounts = state.metamask.accounts
+  const selectedAddress = getSelectedAddress(state)
+
+  return accounts[selectedAddress]
+}
+
+function getSelectedToken (state) {
+  const tokens = state.metamask.tokens || []
+  const selectedTokenAddress = state.metamask.selectedTokenAddress
+  const selectedToken = tokens.filter(({ address }) => address === selectedTokenAddress)[0]
+
+  return selectedToken || null
+}
+
+function getSelectedTokenExchangeRate (state) {
+  const tokenExchangeRates = state.metamask.tokenExchangeRates
+  const selectedToken = getSelectedToken(state) || {}
+  const { symbol = '' } = selectedToken
+
+  const pair = `${symbol.toLowerCase()}_eth`
+  const { rate: tokenExchangeRate = 0 } = tokenExchangeRates[pair] || {}
+
+  return tokenExchangeRate
+}
+
+function getTokenExchangeRate (state, tokenSymbol) {
+  const pair = `${tokenSymbol.toLowerCase()}_eth`
+  const tokenExchangeRates = state.metamask.tokenExchangeRates
+  const { rate: tokenExchangeRate = 0 } = tokenExchangeRates[pair] || {}
+
+  return tokenExchangeRate
+}
+
+function conversionRateSelector (state) {
+  return state.metamask.conversionRate
+}
+
+function getAddressBook (state) {
+  return state.metamask.addressBook
+}
+
+function accountsWithSendEtherInfoSelector (state) {
+  const {
+    accounts,
+    identities,
+  } = state.metamask
+
+  const accountsWithSendEtherInfo = Object.entries(accounts).map(([key, account]) => {
+    return Object.assign({}, account, identities[key])
+  })
+
+  return accountsWithSendEtherInfo
+}
+
+function getCurrentAccountWithSendEtherInfo (state) {
+  const currentAddress = getSelectedAddress(state)
+  const accounts = accountsWithSendEtherInfoSelector(state)
+
+  return accounts.find(({ address }) => address === currentAddress)
+}
+
+function transactionsSelector (state) {
+  const { network, selectedTokenAddress } = state.metamask
+  const unapprovedMsgs = valuesFor(state.metamask.unapprovedMsgs)
+  const shapeShiftTxList = (network === '1') ? state.metamask.shapeShiftTxList : undefined
+  const transactions = state.metamask.selectedAddressTxList || []
+  const txsToRender = !shapeShiftTxList ? transactions.concat(unapprovedMsgs) : transactions.concat(unapprovedMsgs, shapeShiftTxList)
+
+  // console.log({txsToRender, selectedTokenAddress})
+  return selectedTokenAddress
+    ? txsToRender
+      .filter(({ txParams }) => txParams && txParams.to === selectedTokenAddress)
+      .sort((a, b) => b.time - a.time)
+    : txsToRender
+      .sort((a, b) => b.time - a.time)
+}
+
+function getGasPrice (state) {
+  return state.metamask.send.gasPrice
+}
+
+function getGasLimit (state) {
+  return state.metamask.send.gasLimit
+}
+
+function getSendFrom (state) {
+  return state.metamask.send.from
+}
+
+function getSendAmount (state) {
+  return state.metamask.send.amount
+}
+
+function getSendMaxModeState (state) {
+  return state.metamask.send.maxModeOn
+}
+
+function getCurrentCurrency (state) {
+  return state.metamask.currentCurrency
+}
+
+function getSelectedTokenToFiatRate (state) {
+  const selectedTokenExchangeRate = getSelectedTokenExchangeRate(state)
+  const conversionRate = conversionRateSelector(state)
+
+  const tokenToFiatRate = multiplyCurrencies(
+    conversionRate,
+    selectedTokenExchangeRate,
+    { toNumericBase: 'dec' }
+  )
+
+  return tokenToFiatRate
+}
+
+function getSelectedTokenContract (state) {
+  const selectedToken = getSelectedToken(state)
+  return selectedToken
+    ? global.eth.contract(abi).at(selectedToken.address)
+    : null
+}
+
+function autoAddToBetaUI (state) {
+  const autoAddTransactionThreshold = 12
+  const autoAddAccountsThreshold = 2
+  const autoAddTokensThreshold = 1
+
+  const numberOfTransactions = state.metamask.selectedAddressTxList.length
+  const numberOfAccounts = Object.keys(state.metamask.accounts).length
+  const numberOfTokensAdded = state.metamask.tokens.length
+
+  const userPassesThreshold = (numberOfTransactions > autoAddTransactionThreshold) &&
+    (numberOfAccounts > autoAddAccountsThreshold) &&
+    (numberOfTokensAdded > autoAddTokensThreshold)
+  const userIsNotInBeta = !state.metamask.featureFlags.betaUI
+
+  return userIsNotInBeta && userPassesThreshold
+}
+
+function getCurrentViewContext (state) {
+  const { currentView = {} } = state.appState
+  return currentView.context
+}
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