Add react-router to allow use of the browser back button

1 files changed, 359 insertions, 0 deletions

diff --git a/ui/app/components/pages/add-token.js b/ui/app/components/pages/add-token.js
new file mode 100644
index 000000000..7f0c37475
--- /dev/null
+++ b/ui/app/components/pages/add-token.js
@@ -0,0 +1,359 @@
+const inherits = require('util').inherits
+const Component = require('react').Component
+const classnames = require('classnames')
+const h = require('react-hyperscript')
+const connect = require('react-redux').connect
+const Fuse = require('fuse.js')
+const contractMap = require('eth-contract-metadata')
+const TokenBalance = require('../../components/token-balance')
+const Identicon = require('../../components/identicon')
+const contractList = Object.entries(contractMap)
+  .map(([ _, tokenData]) => tokenData)
+  .filter(tokenData => Boolean(tokenData.erc20))
+const fuse = new Fuse(contractList, {
+    shouldSort: true,
+    threshold: 0.45,
+    location: 0,
+    distance: 100,
+    maxPatternLength: 32,
+    minMatchCharLength: 1,
+    keys: ['address', 'name', 'symbol'],
+})
+// const actions = require('./actions')
+const actions = require('../../actions')
+const ethUtil = require('ethereumjs-util')
+const { tokenInfoGetter } = require('../../token-util')
+const R = require('ramda')
+const { DEFAULT_ROUTE } = require('../../routes')
+
+const emptyAddr = '0x0000000000000000000000000000000000000000'
+
+module.exports = connect(mapStateToProps, mapDispatchToProps)(AddTokenScreen)
+
+function mapStateToProps (state) {
+  const { identities, tokens } = state.metamask
+  return {
+    identities,
+    tokens,
+  }
+}
+
+function mapDispatchToProps (dispatch) {
+  return {
+    goHome: () => dispatch(actions.goHome()),
+    addTokens: tokens => dispatch(actions.addTokens(tokens)),
+  }
+}
+
+inherits(AddTokenScreen, Component)
+function AddTokenScreen () {
+  this.state = {
+    isShowingConfirmation: false,
+    customAddress: '',
+    customSymbol: '',
+    customDecimals: 0,
+    searchQuery: '',
+    isCollapsed: true,
+    selectedTokens: {},
+    errors: {},
+  }
+  this.tokenAddressDidChange = this.tokenAddressDidChange.bind(this)
+  this.onNext = this.onNext.bind(this)
+  Component.call(this)
+}
+
+AddTokenScreen.prototype.componentWillMount = function () {
+  this.tokenInfoGetter = tokenInfoGetter()
+}
+
+AddTokenScreen.prototype.toggleToken = function (address, token) {
+  const { selectedTokens, errors } = this.state
+  const { [address]: selectedToken } = selectedTokens
+  this.setState({
+    selectedTokens: {
+      ...selectedTokens,
+      [address]: selectedToken ? null : token,
+    },
+    errors: {
+      ...errors,
+      tokenSelector: null,
+    },
+  })
+}
+
+AddTokenScreen.prototype.onNext = function () {
+  const { isValid, errors } = this.validate()
+
+  return !isValid
+    ? this.setState({ errors })
+    : this.setState({ isShowingConfirmation: true })
+}
+
+AddTokenScreen.prototype.tokenAddressDidChange = function (e) {
+  const customAddress = e.target.value.trim()
+  this.setState({ customAddress })
+  if (ethUtil.isValidAddress(customAddress) && customAddress !== emptyAddr) {
+    this.attemptToAutoFillTokenParams(customAddress)
+  } else {
+    this.setState({
+      customSymbol: '',
+      customDecimals: 0,
+    })
+  }
+}
+
+AddTokenScreen.prototype.checkExistingAddresses = function (address) {
+  if (!address) return false
+  const tokensList = this.props.tokens
+  const matchesAddress = existingToken => {
+    return existingToken.address.toLowerCase() === address.toLowerCase()
+  }
+
+  return R.any(matchesAddress)(tokensList)
+}
+
+AddTokenScreen.prototype.validate = function () {
+  const errors = {}
+  const identitiesList = Object.keys(this.props.identities)
+  const { customAddress, customSymbol, customDecimals, selectedTokens } = this.state
+  const standardAddress = ethUtil.addHexPrefix(customAddress).toLowerCase()
+
+  if (customAddress) {
+    const validAddress = ethUtil.isValidAddress(customAddress)
+    if (!validAddress) {
+      errors.customAddress = 'Address is invalid. '
+    }
+
+    const validDecimals = customDecimals >= 0 && customDecimals < 36
+    if (!validDecimals) {
+      errors.customDecimals = 'Decimals must be at least 0, and not over 36.'
+    }
+
+    const symbolLen = customSymbol.trim().length
+    const validSymbol = symbolLen > 0 && symbolLen < 10
+    if (!validSymbol) {
+      errors.customSymbol = 'Symbol must be between 0 and 10 characters.'
+    }
+
+    const ownAddress = identitiesList.includes(standardAddress)
+    if (ownAddress) {
+      errors.customAddress = 'Personal address detected. Input the token contract address.'
+    }
+
+    const tokenAlreadyAdded = this.checkExistingAddresses(customAddress)
+    if (tokenAlreadyAdded) {
+      errors.customAddress = 'Token has already been added.'
+    }
+  } else if (
+    Object.entries(selectedTokens)
+      .reduce((isEmpty, [ symbol, isSelected ]) => (
+        isEmpty && !isSelected
+      ), true)
+  ) {
+    errors.tokenSelector = 'Must select at least 1 token.'
+  }
+
+  return {
+    isValid: !Object.keys(errors).length,
+    errors,
+  }
+}
+
+AddTokenScreen.prototype.attemptToAutoFillTokenParams = async function (address) {
+  const { symbol, decimals } = await this.tokenInfoGetter(address)
+  if (symbol && decimals) {
+    this.setState({
+      customSymbol: symbol,
+      customDecimals: decimals.toString(),
+    })
+  }
+}
+
+AddTokenScreen.prototype.renderCustomForm = function () {
+  const { customAddress, customSymbol, customDecimals, errors } = this.state
+
+  return !this.state.isCollapsed && (
+    h('div.add-token__add-custom-form', [
+      h('div', {
+        className: classnames('add-token__add-custom-field', {
+          'add-token__add-custom-field--error': errors.customAddress,
+        }),
+      }, [
+        h('div.add-token__add-custom-label', 'Token Address'),
+        h('input.add-token__add-custom-input', {
+          type: 'text',
+          onChange: this.tokenAddressDidChange,
+          value: customAddress,
+        }),
+        h('div.add-token__add-custom-error-message', errors.customAddress),
+      ]),
+      h('div', {
+        className: classnames('add-token__add-custom-field', {
+          'add-token__add-custom-field--error': errors.customSymbol,
+        }),
+      }, [
+        h('div.add-token__add-custom-label', 'Token Symbol'),
+        h('input.add-token__add-custom-input', {
+          type: 'text',
+          value: customSymbol,
+          disabled: true,
+        }),
+        h('div.add-token__add-custom-error-message', errors.customSymbol),
+      ]),
+      h('div', {
+        className: classnames('add-token__add-custom-field', {
+          'add-token__add-custom-field--error': errors.customDecimals,
+        }),
+      }, [
+        h('div.add-token__add-custom-label', 'Decimals of Precision'),
+        h('input.add-token__add-custom-input', {
+          type: 'number',
+          value: customDecimals,
+          disabled: true,
+        }),
+        h('div.add-token__add-custom-error-message', errors.customDecimals),
+      ]),
+    ])
+  )
+}
+
+AddTokenScreen.prototype.renderTokenList = function () {
+  const { searchQuery = '', selectedTokens } = this.state
+  const results = searchQuery
+    ? fuse.search(searchQuery) || []
+    : contractList
+
+  return Array(6).fill(undefined)
+    .map((_, i) => {
+      const { logo, symbol, name, address } = results[i] || {}
+      const tokenAlreadyAdded = this.checkExistingAddresses(address)
+      return Boolean(logo || symbol || name) && (
+        h('div.add-token__token-wrapper', {
+          className: classnames({
+            'add-token__token-wrapper--selected': selectedTokens[address],
+            'add-token__token-wrapper--disabled': tokenAlreadyAdded,
+          }),
+          onClick: () => !tokenAlreadyAdded && this.toggleToken(address, results[i]),
+        }, [
+          h('div.add-token__token-icon', {
+            style: {
+              backgroundImage: `url(images/contract/${logo})`,
+            },
+          }),
+          h('div.add-token__token-data', [
+            h('div.add-token__token-symbol', symbol),
+            h('div.add-token__token-name', name),
+          ]),
+          // tokenAlreadyAdded && (
+          //   h('div.add-token__token-message', 'Already added')
+          // ),
+        ])
+      )
+    })
+}
+
+AddTokenScreen.prototype.renderConfirmation = function () {
+  const {
+    customAddress: address,
+    customSymbol: symbol,
+    customDecimals: decimals,
+    selectedTokens,
+  } = this.state
+
+  const { addTokens, history } = this.props
+
+  const customToken = {
+    address,
+    symbol,
+    decimals,
+  }
+
+  const tokens = address && symbol && decimals
+    ? { ...selectedTokens, [address]: customToken }
+    : selectedTokens
+
+  return (
+    h('div.add-token', [
+      h('div.add-token__wrapper', [
+        h('div.add-token__title-container.add-token__confirmation-title', [
+          h('div.add-token__title', 'Add Token'),
+          h('div.add-token__description', 'Would you like to add these tokens?'),
+        ]),
+        h('div.add-token__content-container.add-token__confirmation-content', [
+          h('div.add-token__description.add-token__confirmation-description', 'Your balances'),
+          h('div.add-token__confirmation-token-list',
+            Object.entries(tokens)
+              .map(([ address, token ]) => (
+                h('span.add-token__confirmation-token-list-item', [
+                  h(Identicon, {
+                    className: 'add-token__confirmation-token-icon',
+                    diameter: 75,
+                    address,
+                  }),
+                  h(TokenBalance, { token }),
+                ])
+              ))
+          ),
+        ]),
+      ]),
+      h('div.add-token__buttons', [
+        h('button.btn-secondary', {
+          onClick: () => addTokens(tokens).then(() => history.push(DEFAULT_ROUTE)),
+        }, 'Add Tokens'),
+        h('button.btn-tertiary', {
+          onClick: () => this.setState({ isShowingConfirmation: false }),
+        }, 'Back'),
+      ]),
+    ])
+  )
+}
+
+AddTokenScreen.prototype.render = function () {
+  const { isCollapsed, errors, isShowingConfirmation } = this.state
+  const { history } = this.props
+
+  return isShowingConfirmation
+    ? this.renderConfirmation()
+    : (
+    h('div.add-token', [
+      h('div.add-token__wrapper', [
+        h('div.add-token__title-container', [
+          h('div.add-token__title', 'Add Token'),
+          h('div.add-token__description', 'Keep track of the tokens you’ve bought with your MetaMask account. If you bought tokens using a different account, those tokens will not appear here.'),
+          h('div.add-token__description', 'Search for tokens or select from our list of popular tokens.'),
+        ]),
+        h('div.add-token__content-container', [
+          h('div.add-token__input-container', [
+            h('input.add-token__input', {
+              type: 'text',
+              placeholder: 'Search',
+              onChange: e => this.setState({ searchQuery: e.target.value }),
+            }),
+            h('div.add-token__search-input-error-message', errors.tokenSelector),
+          ]),
+          h(
+            'div.add-token__token-icons-container',
+            this.renderTokenList(),
+          ),
+        ]),
+        h('div.add-token__footers', [
+          h('div.add-token__add-custom', {
+            onClick: () => this.setState({ isCollapsed: !isCollapsed }),
+          }, [
+            'Add custom token',
+            h(`i.fa.fa-angle-${isCollapsed ? 'down' : 'up'}`),
+          ]),
+          this.renderCustomForm(),
+        ]),
+      ]),
+      h('div.add-token__buttons', [
+        h('button.btn-secondary', {
+          onClick: this.onNext,
+        }, 'Next'),
+        h('button.btn-tertiary', {
+          onClick: () => history.goBack(),
+        }, 'Cancel'),
+      ]),
+    ])
+  )
+}