Add Confirm Send token screen

1 files changed, 394 insertions, 0 deletions

diff --git a/ui/app/components/pending-tx/confirm-send-token.js b/ui/app/components/pending-tx/confirm-send-token.js
new file mode 100644
index 000000000..384ac92cc
--- /dev/null
+++ b/ui/app/components/pending-tx/confirm-send-token.js
@@ -0,0 +1,394 @@
+const Component = require('react').Component
+const { connect } = require('react-redux')
+const h = require('react-hyperscript')
+const inherits = require('util').inherits
+const abi = require('human-standard-token-abi')
+const abiDecoder = require('abi-decoder')
+abiDecoder.addABI(abi)
+const actions = require('../../actions')
+const clone = require('clone')
+const Identicon = require('../identicon')
+const ethUtil = require('ethereumjs-util')
+const BN = ethUtil.BN
+const hexToBn = require('../../../../app/scripts/lib/hex-to-bn')
+const { conversionUtil } = require('../../conversion-util')
+
+const MIN_GAS_PRICE_GWEI_BN = new BN(1)
+const GWEI_FACTOR = new BN(1e9)
+const MIN_GAS_PRICE_BN = MIN_GAS_PRICE_GWEI_BN.mul(GWEI_FACTOR)
+
+module.exports = connect(mapStateToProps, mapDispatchToProps)(ConfirmSendToken)
+
+function mapStateToProps (state, ownProps) {
+  const { token: { symbol }, txData } = ownProps
+  const { txParams } = txData || {}
+  const tokenData = txParams.data && abiDecoder.decodeMethod(txParams.data)
+  const {
+    conversionRate,
+    identities,
+  } = state.metamask
+  const accounts = state.metamask.accounts
+  const selectedAddress = state.metamask.selectedAddress || Object.keys(accounts)[0]
+  const tokenExchangeRates = state.metamask.tokenExchangeRates
+  const pair = `${symbol.toLowerCase()}_eth`
+  const { rate: tokenExchangeRate = 0 } = tokenExchangeRates[pair] || {}
+
+  return {
+    conversionRate,
+    identities,
+    selectedAddress,
+    tokenExchangeRate,
+    tokenData: tokenData || {},
+  }
+}
+
+function mapDispatchToProps (dispatch, ownProps) {
+  const { token: { symbol } } = ownProps
+
+  return {
+    backToAccountDetail: address => dispatch(actions.backToAccountDetail(address)),
+    cancelTransaction: ({ id }) => dispatch(actions.cancelTx({ id })),
+    updateTokenExchangeRate: () => dispatch(actions.updateTokenExchangeRate(symbol)),
+  }
+}
+
+inherits(ConfirmSendToken, Component)
+function ConfirmSendToken () {
+  Component.call(this)
+  this.state = {}
+  this.onSubmit = this.onSubmit.bind(this)
+}
+
+ConfirmSendToken.prototype.componentWillMount = function () {
+  this.props.updateTokenExchangeRate()
+}
+
+ConfirmSendToken.prototype.getAmount = function () {
+  const { conversionRate, tokenExchangeRate, token, tokenData } = this.props
+  const { params = [] } = tokenData
+  const { value } = params[1] || {}
+  const { decimals } = token
+  const multiplier = Math.pow(10, Number(decimals || 0))
+  const sendTokenAmount = Number(value / multiplier)
+
+  return {
+    fiat: tokenExchangeRate
+      ? +(sendTokenAmount * tokenExchangeRate * conversionRate).toFixed(2)
+      : null,
+    token: +sendTokenAmount.toFixed(decimals),
+  }
+
+}
+
+ConfirmSendToken.prototype.getGasFee = function () {
+  const { conversionRate, tokenExchangeRate, token } = this.props
+  const txMeta = this.gatherTxMeta()
+  const txParams = txMeta.txParams || {}
+  const { decimals } = token
+
+  // Gas
+  const gas = txParams.gas
+  const gasBn = hexToBn(gas)
+
+  // Gas Price
+  const gasPrice = txParams.gasPrice || MIN_GAS_PRICE_BN.toString(16)
+  const gasPriceBn = hexToBn(gasPrice)
+  const txFeeBn = gasBn.mul(gasPriceBn)
+
+
+  const USD = conversionUtil(txFeeBn, {
+    fromNumericBase: 'BN',
+    toNumericBase: 'dec',
+    fromDenomination: 'WEI',
+    fromCurrency: 'ETH',
+    toCurrency: 'USD',
+    numberOfDecimals: 2,
+    conversionRate,
+  })
+  const ETH = conversionUtil(txFeeBn, {
+    fromNumericBase: 'BN',
+    toNumericBase: 'dec',
+    fromDenomination: 'WEI',
+    fromCurrency: 'ETH',
+    toCurrency: 'ETH',
+    numberOfDecimals: 6,
+    conversionRate,
+  })
+
+  return {
+    fiat: +Number(USD).toFixed(2),
+    eth: ETH,
+    token: tokenExchangeRate
+      ? +(ETH * tokenExchangeRate).toFixed(decimals)
+      : null,
+  }
+}
+
+ConfirmSendToken.prototype.getData = function () {
+  const { identities } = this.props
+  const txMeta = this.gatherTxMeta()
+  const txParams = txMeta.txParams || {}
+
+  return {
+    from: {
+      address: txParams.from,
+      name: identities[txParams.from].name,
+    },
+    to: {
+      address: txParams.to,
+      name: identities[txParams.to] ? identities[txParams.to].name : 'New Recipient',
+    },
+    memo: txParams.memo || '',
+  }
+}
+
+ConfirmSendToken.prototype.renderHeroAmount = function () {
+  const { token: { symbol } } = this.props
+  const { fiat: fiatAmount, token: tokenAmount } = this.getAmount()
+  const txMeta = this.gatherTxMeta()
+  const txParams = txMeta.txParams || {}
+  const { memo = '' } = txParams
+
+  return fiatAmount
+    ? (
+      h('div.confirm-send-token__hero-amount-wrapper', [
+        h('h3.flex-center.confirm-screen-send-amount', `$${fiatAmount}`),
+        h('h3.flex-center.confirm-screen-send-amount-currency', 'USD'),
+        h('div.flex-center.confirm-memo-wrapper', [
+          h('h3.confirm-screen-send-memo', memo),
+        ]),
+      ])
+    )
+    : (
+      h('div.confirm-send-token__hero-amount-wrapper', [
+        h('h3.flex-center.confirm-screen-send-amount', tokenAmount),
+        h('h3.flex-center.confirm-screen-send-amount-currency', symbol),
+        h('div.flex-center.confirm-memo-wrapper', [
+          h('h3.confirm-screen-send-memo', memo),
+        ]),
+      ])
+    )
+}
+
+ConfirmSendToken.prototype.renderGasFee = function () {
+  const { token: { symbol } } = this.props
+  const { fiat: fiatGas, token: tokenGas, eth: ethGas } = this.getGasFee()
+
+  return (
+    h('section.flex-row.flex-center.confirm-screen-row', [
+      h('span.confirm-screen-label.confirm-screen-section-column', [ 'Gas Fee' ]),
+      h('div.confirm-screen-section-column', [
+        h('div.confirm-screen-row-info', `$${fiatGas} USD`),
+
+        h(
+          'div.confirm-screen-row-detail',
+          tokenGas ? `${tokenGas} ${symbol}` : `${ethGas} ETH`
+        ),
+      ]),
+    ])
+  )
+}
+
+ConfirmSendToken.prototype.renderTotalPlusGas = function () {
+  const { token: { symbol } } = this.props
+  const { fiat: fiatAmount, token: tokenAmount } = this.getAmount()
+  const { fiat: fiatGas, token: tokenGas } = this.getGasFee()
+
+  return fiatAmount && fiatGas
+    ? (
+      h('section.flex-row.flex-center.confirm-screen-total-box ', [
+        h('div.confirm-screen-section-column', [
+          h('span.confirm-screen-label', [ 'Total ' ]),
+          h('div.confirm-screen-total-box__subtitle', [ 'Amount + Gas' ]),
+        ]),
+
+        h('div.confirm-screen-section-column', [
+          h('div.confirm-screen-row-info', `$${fiatAmount + fiatGas} USD`),
+          h('div.confirm-screen-row-detail', `${tokenAmount + tokenGas} ${symbol}`),
+        ]),
+      ])
+    )
+    : (
+      h('section.flex-row.flex-center.confirm-screen-total-box ', [
+        h('div.confirm-screen-section-column', [
+          h('span.confirm-screen-label', [ 'Total ' ]),
+          h('div.confirm-screen-total-box__subtitle', [ 'Amount + Gas' ]),
+        ]),
+
+        h('div.confirm-screen-section-column', [
+          h('div.confirm-screen-row-info', `${tokenAmount} ${symbol}`),
+          h('div.confirm-screen-row-detail', `+ ${fiatGas} USD Gas`),
+        ]),
+      ])
+    )
+}
+
+ConfirmSendToken.prototype.render = function () {
+  const { backToAccountDetail, selectedAddress } = this.props
+  const txMeta = this.gatherTxMeta()
+  const txParams = txMeta.txParams || {}
+
+  const {
+    from: {
+      address: fromAddress,
+      name: fromName,
+    },
+    to: {
+      address: toAddress,
+      name: toName,
+    },
+  } = this.getData()
+
+  this.inputs = []
+
+  return (
+    h('div.flex-column.flex-grow.confirm-screen-container', {
+      style: { minWidth: '355px' },
+    }, [
+      // Main Send token Card
+      h('div.confirm-screen-wrapper.flex-column.flex-grow', [
+        h('h3.flex-center.confirm-screen-header', [
+          h('button.confirm-screen-back-button', {
+            onClick: () => backToAccountDetail(selectedAddress),
+          }, 'BACK'),
+          h('div.confirm-screen-title', 'Confirm Transaction'),
+        ]),
+        h('div.flex-row.flex-center.confirm-screen-identicons', [
+          h('div.confirm-screen-account-wrapper', [
+            h(
+              Identicon,
+              {
+                address: fromAddress,
+                diameter: 100,
+              },
+            ),
+            h('span.confirm-screen-account-name', fromName),
+            h('span.confirm-screen-account-number', fromAddress.slice(fromAddress.length - 4)),
+          ]),
+          h('i.fa.fa-arrow-right.fa-lg'),
+          h('div.confirm-screen-account-wrapper', [
+            h(
+              Identicon,
+              {
+                address: txParams.to,
+                diameter: 100,
+              },
+            ),
+            h('span.confirm-screen-account-name', toName),
+            h('span.confirm-screen-account-number', toAddress.slice(toAddress.length - 4)),
+          ]),
+        ]),
+
+        h('h3.flex-center.confirm-screen-sending-to-message', {
+          style: {
+            textAlign: 'center',
+            fontSize: '16px',
+          },
+        }, [
+          `You're sending to Recipient ...${toAddress.slice(toAddress.length - 4)}`,
+        ]),
+
+        this.renderHeroAmount(),
+
+        h('div.confirm-screen-rows', [
+          h('section.flex-row.flex-center.confirm-screen-row', [
+            h('span.confirm-screen-label.confirm-screen-section-column', [ 'From' ]),
+            h('div.confirm-screen-section-column', [
+              h('div.confirm-screen-row-info', fromName),
+              h('div.confirm-screen-row-detail', `...${fromAddress.slice(fromAddress.length - 4)}`),
+            ]),
+          ]),
+
+          h('section.flex-row.flex-center.confirm-screen-row', [
+            h('span.confirm-screen-label.confirm-screen-section-column', [ 'To' ]),
+            h('div.confirm-screen-section-column', [
+              h('div.confirm-screen-row-info', toName),
+              h('div.confirm-screen-row-detail', `...${toAddress.slice(toAddress.length - 4)}`),
+            ]),
+          ]),
+
+          this.renderGasFee(),
+
+          this.renderTotalPlusGas(),
+
+        ]),
+      ]),
+
+      h('form#pending-tx-form.flex-column.flex-center', {
+        onSubmit: this.onSubmit,
+      }, [
+
+        // Accept Button
+        h('button.confirm-screen-confirm-button', ['CONFIRM']),
+
+        // Cancel Button
+        h('div.cancel.btn-light.confirm-screen-cancel-button', {
+          onClick: (event) => this.cancel(event, txMeta),
+        }, 'CANCEL'),
+      ]),
+    ])
+  )
+}
+
+ConfirmSendToken.prototype.onSubmit = function (event) {
+  event.preventDefault()
+  const txMeta = this.gatherTxMeta()
+  const valid = this.checkValidity()
+  this.setState({ valid, submitting: true })
+
+  if (valid && this.verifyGasParams()) {
+    this.props.sendTransaction(txMeta, event)
+  } else {
+    this.props.dispatch(actions.displayWarning('Invalid Gas Parameters'))
+    this.setState({ submitting: false })
+  }
+}
+
+ConfirmSendToken.prototype.cancel = function (event, txMeta) {
+  event.preventDefault()
+  this.props.cancelTransaction(txMeta)
+}
+
+ConfirmSendToken.prototype.checkValidity = function () {
+  const form = this.getFormEl()
+  const valid = form.checkValidity()
+  return valid
+}
+
+ConfirmSendToken.prototype.getFormEl = function () {
+  const form = document.querySelector('form#pending-tx-form')
+  // Stub out form for unit tests:
+  if (!form) {
+    return { checkValidity () { return true } }
+  }
+  return form
+}
+
+// After a customizable state value has been updated,
+ConfirmSendToken.prototype.gatherTxMeta = function () {
+  const props = this.props
+  const state = this.state
+  const txData = clone(state.txData) || clone(props.txData)
+
+  // log.debug(`UI has defaulted to tx meta ${JSON.stringify(txData)}`)
+  return txData
+}
+
+ConfirmSendToken.prototype.verifyGasParams = function () {
+  // We call this in case the gas has not been modified at all
+  if (!this.state) { return true }
+  return (
+    this._notZeroOrEmptyString(this.state.gas) &&
+    this._notZeroOrEmptyString(this.state.gasPrice)
+  )
+}
+
+ConfirmSendToken.prototype._notZeroOrEmptyString = function (obj) {
+  return obj !== '' && obj !== '0x0'
+}
+
+ConfirmSendToken.prototype.bnMultiplyByFraction = function (targetBN, numerator, denominator) {
+  const numBN = new BN(numerator)
+  const denomBN = new BN(denominator)
+  return targetBN.mul(numBN).div(denomBN)
+}