Folder restructure (#6304)

* Remove ui/app/keychains/

* Remove ui/app/img/ (unused images)

* Move conversion-util to helpers/utils/

* Move token-util to helpers/utils/

* Move /helpers/*.js inside /helpers/utils/

* Move util tests inside /helpers/utils/

* Renameand move confirm-transaction/util.js to helpers/utils/

* Move higher-order-components to helpers/higher-order-components/

* Move infura-conversion.json to helpers/constants/

* Move all utility functions to helpers/utils/

* Move pages directory to top-level

* Move all constants to helpers/constants/

* Move metametrics inside helpers/

* Move app and root inside pages/

* Move routes inside helpers/

* Re-organize ducks/

* Move reducers to ducks/

* Move selectors inside selectors/

* Move test out of test folder

* Move action, reducer, store inside store/

* Move ui components inside ui/

* Move UI components inside ui/

* Move connected components inside components/app/

* Move i18n-helper inside helpers/

* Fix unit tests

* Fix unit test

* Move pages components

* Rename routes component

* Move reducers to ducks/index

* Fix bad path in unit test

14 files changed, 694 insertions, 0 deletions

diff --git a/ui/app/pages/add-token/add-token.component.js b/ui/app/pages/add-token/add-token.component.js
new file mode 100644
index 000000000..40c1ff7fd
--- /dev/null
+++ b/ui/app/pages/add-token/add-token.component.js
@@ -0,0 +1,335 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+import ethUtil from 'ethereumjs-util'
+import { checkExistingAddresses } from './util'
+import { tokenInfoGetter } from '../../helpers/utils/token-util'
+import { DEFAULT_ROUTE, CONFIRM_ADD_TOKEN_ROUTE } from '../../helpers/constants/routes'
+import TextField from '../../components/ui/text-field'
+import TokenList from './token-list'
+import TokenSearch from './token-search'
+import PageContainer from '../../components/ui/page-container'
+import { Tabs, Tab } from '../../components/ui/tabs'
+
+const emptyAddr = '0x0000000000000000000000000000000000000000'
+const SEARCH_TAB = 'SEARCH'
+const CUSTOM_TOKEN_TAB = 'CUSTOM_TOKEN'
+
+class AddToken extends Component {
+  static contextTypes = {
+    t: PropTypes.func,
+  }
+
+  static propTypes = {
+    history: PropTypes.object,
+    setPendingTokens: PropTypes.func,
+    pendingTokens: PropTypes.object,
+    clearPendingTokens: PropTypes.func,
+    tokens: PropTypes.array,
+    identities: PropTypes.object,
+  }
+
+  constructor (props) {
+    super(props)
+
+    this.state = {
+      customAddress: '',
+      customSymbol: '',
+      customDecimals: 0,
+      searchResults: [],
+      selectedTokens: {},
+      tokenSelectorError: null,
+      customAddressError: null,
+      customSymbolError: null,
+      customDecimalsError: null,
+      autoFilled: false,
+      displayedTab: SEARCH_TAB,
+      forceEditSymbol: false,
+    }
+  }
+
+  componentDidMount () {
+    this.tokenInfoGetter = tokenInfoGetter()
+    const { pendingTokens = {} } = this.props
+    const pendingTokenKeys = Object.keys(pendingTokens)
+
+    if (pendingTokenKeys.length > 0) {
+      let selectedTokens = {}
+      let customToken = {}
+
+      pendingTokenKeys.forEach(tokenAddress => {
+        const token = pendingTokens[tokenAddress]
+        const { isCustom } = token
+
+        if (isCustom) {
+          customToken = { ...token }
+        } else {
+          selectedTokens = { ...selectedTokens, [tokenAddress]: { ...token } }
+        }
+      })
+
+      const {
+        address: customAddress = '',
+        symbol: customSymbol = '',
+        decimals: customDecimals = 0,
+      } = customToken
+
+      const displayedTab = Object.keys(selectedTokens).length > 0 ? SEARCH_TAB : CUSTOM_TOKEN_TAB
+      this.setState({ selectedTokens, customAddress, customSymbol, customDecimals, displayedTab })
+    }
+  }
+
+  handleToggleToken (token) {
+    const { address } = token
+    const { selectedTokens = {} } = this.state
+    const selectedTokensCopy = { ...selectedTokens }
+
+    if (address in selectedTokensCopy) {
+      delete selectedTokensCopy[address]
+    } else {
+      selectedTokensCopy[address] = token
+    }
+
+    this.setState({
+      selectedTokens: selectedTokensCopy,
+      tokenSelectorError: null,
+    })
+  }
+
+  hasError () {
+    const {
+      tokenSelectorError,
+      customAddressError,
+      customSymbolError,
+      customDecimalsError,
+    } = this.state
+
+    return tokenSelectorError || customAddressError || customSymbolError || customDecimalsError
+  }
+
+  hasSelected () {
+    const { customAddress = '', selectedTokens = {} } = this.state
+    return customAddress || Object.keys(selectedTokens).length > 0
+  }
+
+  handleNext () {
+    if (this.hasError()) {
+      return
+    }
+
+    if (!this.hasSelected()) {
+      this.setState({ tokenSelectorError: this.context.t('mustSelectOne') })
+      return
+    }
+
+    const { setPendingTokens, history } = this.props
+    const {
+      customAddress: address,
+      customSymbol: symbol,
+      customDecimals: decimals,
+      selectedTokens,
+    } = this.state
+
+    const customToken = {
+      address,
+      symbol,
+      decimals,
+    }
+
+    setPendingTokens({ customToken, selectedTokens })
+    history.push(CONFIRM_ADD_TOKEN_ROUTE)
+  }
+
+  async attemptToAutoFillTokenParams (address) {
+    const { symbol = '', decimals = 0 } = await this.tokenInfoGetter(address)
+
+    const autoFilled = Boolean(symbol && decimals)
+    this.setState({ autoFilled })
+    this.handleCustomSymbolChange(symbol || '')
+    this.handleCustomDecimalsChange(decimals)
+  }
+
+  handleCustomAddressChange (value) {
+    const customAddress = value.trim()
+    this.setState({
+      customAddress,
+      customAddressError: null,
+      tokenSelectorError: null,
+      autoFilled: false,
+    })
+
+    const isValidAddress = ethUtil.isValidAddress(customAddress)
+    const standardAddress = ethUtil.addHexPrefix(customAddress).toLowerCase()
+
+    switch (true) {
+      case !isValidAddress:
+        this.setState({
+          customAddressError: this.context.t('invalidAddress'),
+          customSymbol: '',
+          customDecimals: 0,
+          customSymbolError: null,
+          customDecimalsError: null,
+        })
+
+        break
+      case Boolean(this.props.identities[standardAddress]):
+        this.setState({
+          customAddressError: this.context.t('personalAddressDetected'),
+        })
+
+        break
+      case checkExistingAddresses(customAddress, this.props.tokens):
+        this.setState({
+          customAddressError: this.context.t('tokenAlreadyAdded'),
+        })
+
+        break
+      default:
+        if (customAddress !== emptyAddr) {
+          this.attemptToAutoFillTokenParams(customAddress)
+        }
+    }
+  }
+
+  handleCustomSymbolChange (value) {
+    const customSymbol = value.trim()
+    const symbolLength = customSymbol.length
+    let customSymbolError = null
+
+    if (symbolLength <= 0 || symbolLength >= 12) {
+      customSymbolError = this.context.t('symbolBetweenZeroTwelve')
+    }
+
+    this.setState({ customSymbol, customSymbolError })
+  }
+
+  handleCustomDecimalsChange (value) {
+    const customDecimals = value.trim()
+    const validDecimals = customDecimals !== null &&
+      customDecimals !== '' &&
+      customDecimals >= 0 &&
+      customDecimals <= 36
+    let customDecimalsError = null
+
+    if (!validDecimals) {
+      customDecimalsError = this.context.t('decimalsMustZerotoTen')
+    }
+
+    this.setState({ customDecimals, customDecimalsError })
+  }
+
+  renderCustomTokenForm () {
+    const {
+      customAddress,
+      customSymbol,
+      customDecimals,
+      customAddressError,
+      customSymbolError,
+      customDecimalsError,
+      autoFilled,
+      forceEditSymbol,
+    } = this.state
+
+    return (
+      <div className="add-token__custom-token-form">
+        <TextField
+          id="custom-address"
+          label={this.context.t('tokenContractAddress')}
+          type="text"
+          value={customAddress}
+          onChange={e => this.handleCustomAddressChange(e.target.value)}
+          error={customAddressError}
+          fullWidth
+          margin="normal"
+        />
+        <TextField
+          id="custom-symbol"
+          label={(
+            <div className="add-token__custom-symbol__label-wrapper">
+              <span className="add-token__custom-symbol__label">
+                {this.context.t('tokenSymbol')}
+              </span>
+              {(autoFilled && !forceEditSymbol) && (
+                <div
+                  className="add-token__custom-symbol__edit"
+                  onClick={() => this.setState({ forceEditSymbol: true })}
+                >
+                  {this.context.t('edit')}
+                </div>
+              )}
+            </div>
+          )}
+          type="text"
+          value={customSymbol}
+          onChange={e => this.handleCustomSymbolChange(e.target.value)}
+          error={customSymbolError}
+          fullWidth
+          margin="normal"
+          disabled={autoFilled && !forceEditSymbol}
+        />
+        <TextField
+          id="custom-decimals"
+          label={this.context.t('decimal')}
+          type="number"
+          value={customDecimals}
+          onChange={e => this.handleCustomDecimalsChange(e.target.value)}
+          error={customDecimalsError}
+          fullWidth
+          margin="normal"
+          disabled={autoFilled}
+        />
+      </div>
+    )
+  }
+
+  renderSearchToken () {
+    const { tokenSelectorError, selectedTokens, searchResults } = this.state
+
+    return (
+      <div className="add-token__search-token">
+        <TokenSearch
+          onSearch={({ results = [] }) => this.setState({ searchResults: results })}
+          error={tokenSelectorError}
+        />
+        <div className="add-token__token-list">
+          <TokenList
+            results={searchResults}
+            selectedTokens={selectedTokens}
+            onToggleToken={token => this.handleToggleToken(token)}
+          />
+        </div>
+      </div>
+    )
+  }
+
+  renderTabs () {
+    return (
+      <Tabs>
+        <Tab name={this.context.t('search')}>
+          { this.renderSearchToken() }
+        </Tab>
+        <Tab name={this.context.t('customToken')}>
+          { this.renderCustomTokenForm() }
+        </Tab>
+      </Tabs>
+    )
+  }
+
+  render () {
+    const { history, clearPendingTokens } = this.props
+
+    return (
+      <PageContainer
+        title={this.context.t('addTokens')}
+        tabsComponent={this.renderTabs()}
+        onSubmit={() => this.handleNext()}
+        disabled={this.hasError() || !this.hasSelected()}
+        onCancel={() => {
+          clearPendingTokens()
+          history.push(DEFAULT_ROUTE)
+        }}
+      />
+    )
+  }
+}
+
+export default AddToken
diff --git a/ui/app/pages/add-token/add-token.container.js b/ui/app/pages/add-token/add-token.container.js
new file mode 100644
index 000000000..eee16dfc7
--- /dev/null
+++ b/ui/app/pages/add-token/add-token.container.js
@@ -0,0 +1,22 @@
+import { connect } from 'react-redux'
+import AddToken from './add-token.component'
+
+const { setPendingTokens, clearPendingTokens } = require('../../store/actions')
+
+const mapStateToProps = ({ metamask }) => {
+  const { identities, tokens, pendingTokens } = metamask
+  return {
+    identities,
+    tokens,
+    pendingTokens,
+  }
+}
+
+const mapDispatchToProps = dispatch => {
+  return {
+    setPendingTokens: tokens => dispatch(setPendingTokens(tokens)),
+    clearPendingTokens: () => dispatch(clearPendingTokens()),
+  }
+}
+
+export default connect(mapStateToProps, mapDispatchToProps)(AddToken)
diff --git a/ui/app/pages/add-token/index.js b/ui/app/pages/add-token/index.js
new file mode 100644
index 000000000..3666cae82
--- /dev/null
+++ b/ui/app/pages/add-token/index.js
@@ -0,0 +1,2 @@
+import AddToken from './add-token.container'
+module.exports = AddToken
diff --git a/ui/app/pages/add-token/index.scss b/ui/app/pages/add-token/index.scss
new file mode 100644
index 000000000..ef6802f96
--- /dev/null
+++ b/ui/app/pages/add-token/index.scss
@@ -0,0 +1,45 @@
+@import 'token-list/index';
+
+.add-token {
+  &__custom-token-form {
+    padding: 8px 16px 16px;
+
+    input[type="number"]::-webkit-inner-spin-button {
+      -webkit-appearance: none;
+      display: none;
+    }
+
+    input[type="number"]:hover::-webkit-inner-spin-button {
+      -webkit-appearance: none;
+      display: none;
+    }
+  }
+
+  &__search-token {
+    padding: 16px;
+  }
+
+  &__token-list {
+    margin-top: 16px;
+  }
+
+  &__custom-symbol {
+
+    &__label-wrapper {
+      display: flex;
+      flex-flow: row nowrap;
+    }
+
+    &__label {
+      flex: 0 0 auto;
+    }
+
+    &__edit {
+      flex: 1 1 auto;
+      text-align: right;
+      color: $curious-blue;
+      padding-right: 4px;
+      cursor: pointer;
+    }
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/index.js b/ui/app/pages/add-token/token-list/index.js
new file mode 100644
index 000000000..21dd5ac72
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/index.js
@@ -0,0 +1,2 @@
+import TokenList from './token-list.container'
+module.exports = TokenList
diff --git a/ui/app/pages/add-token/token-list/index.scss b/ui/app/pages/add-token/token-list/index.scss
new file mode 100644
index 000000000..b7787a18e
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/index.scss
@@ -0,0 +1,65 @@
+@import 'token-list-placeholder/index';
+
+.token-list {
+  &__title {
+    font-size: .75rem;
+  }
+
+  &__tokens-container {
+    display: flex;
+    flex-direction: column;
+  }
+
+  &__token {
+    transition: 200ms ease-in-out;
+    display: flex;
+    flex-flow: row nowrap;
+    align-items: center;
+    padding: 8px;
+    margin-top: 8px;
+    box-sizing: border-box;
+    border-radius: 10px;
+    cursor: pointer;
+    border: 2px solid transparent;
+    position: relative;
+
+    &:hover {
+      border: 2px solid rgba($malibu-blue, .5);
+    }
+
+    &--selected {
+      border: 2px solid $malibu-blue !important;
+    }
+
+    &--disabled {
+      opacity: .4;
+      pointer-events: none;
+    }
+  }
+
+  &__token-icon {
+    width: 48px;
+    height: 48px;
+    background-repeat: no-repeat;
+    background-size: contain;
+    background-position: center;
+    border-radius: 50%;
+    background-color: $white;
+    box-shadow: 0 2px 4px 0 rgba($black, .24);
+    margin-right: 12px;
+    flex: 0 0 auto;
+  }
+
+  &__token-data {
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+    min-width: 0;
+  }
+
+  &__token-name {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/index.js b/ui/app/pages/add-token/token-list/token-list-placeholder/index.js
new file mode 100644
index 000000000..b82f45e93
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/index.js
@@ -0,0 +1,2 @@
+import TokenListPlaceholder from './token-list-placeholder.component'
+module.exports = TokenListPlaceholder
diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss b/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss
new file mode 100644
index 000000000..cc495dfb0
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/index.scss
@@ -0,0 +1,23 @@
+.token-list-placeholder {
+  display: flex;
+  align-items: center;
+  padding-top: 36px;
+  flex-direction: column;
+  line-height: 22px;
+  opacity: .5;
+
+  &__text {
+    color: $silver-chalice;
+    width: 50%;
+    text-align: center;
+    margin-top: 8px;
+
+    @media screen and (max-width: 575px) {
+      width: 60%;
+    }
+  }
+
+  &__link {
+    color: $curious-blue;
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js b/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js
new file mode 100644
index 000000000..20f550927
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list-placeholder/token-list-placeholder.component.js
@@ -0,0 +1,27 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
+export default class TokenListPlaceholder extends Component {
+  static contextTypes = {
+    t: PropTypes.func,
+  }
+
+  render () {
+    return (
+      <div className="token-list-placeholder">
+        <img src="images/tokensearch.svg" />
+        <div className="token-list-placeholder__text">
+          { this.context.t('addAcquiredTokens') }
+        </div>
+        <a
+          className="token-list-placeholder__link"
+          href="https://metamask.zendesk.com/hc/en-us/articles/360015489031"
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          { this.context.t('learnMore') }
+        </a>
+      </div>
+    )
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/token-list.component.js b/ui/app/pages/add-token/token-list/token-list.component.js
new file mode 100644
index 000000000..724a68d6e
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list.component.js
@@ -0,0 +1,60 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+import classnames from 'classnames'
+import { checkExistingAddresses } from '../util'
+import TokenListPlaceholder from './token-list-placeholder'
+
+export default class InfoBox extends Component {
+  static contextTypes = {
+    t: PropTypes.func,
+  }
+
+  static propTypes = {
+    tokens: PropTypes.array,
+    results: PropTypes.array,
+    selectedTokens: PropTypes.object,
+    onToggleToken: PropTypes.func,
+  }
+
+  render () {
+    const { results = [], selectedTokens = {}, onToggleToken, tokens = [] } = this.props
+
+    return results.length === 0
+      ? <TokenListPlaceholder />
+      : (
+        <div className="token-list">
+          <div className="token-list__title">
+            { this.context.t('searchResults') }
+          </div>
+          <div className="token-list__tokens-container">
+            {
+              Array(6).fill(undefined)
+                .map((_, i) => {
+                  const { logo, symbol, name, address } = results[i] || {}
+                  const tokenAlreadyAdded = checkExistingAddresses(address, tokens)
+
+                  return Boolean(logo || symbol || name) && (
+                    <div
+                      className={classnames('token-list__token', {
+                        'token-list__token--selected': selectedTokens[address],
+                        'token-list__token--disabled': tokenAlreadyAdded,
+                      })}
+                      onClick={() => !tokenAlreadyAdded && onToggleToken(results[i])}
+                      key={i}
+                    >
+                      <div
+                        className="token-list__token-icon"
+                        style={{ backgroundImage: logo && `url(images/contract/${logo})` }}>
+                      </div>
+                      <div className="token-list__token-data">
+                        <span className="token-list__token-name">{ `${name} (${symbol})` }</span>
+                      </div>
+                    </div>
+                  )
+                })
+            }
+          </div>
+        </div>
+      )
+  }
+}
diff --git a/ui/app/pages/add-token/token-list/token-list.container.js b/ui/app/pages/add-token/token-list/token-list.container.js
new file mode 100644
index 000000000..cd7b07a37
--- /dev/null
+++ b/ui/app/pages/add-token/token-list/token-list.container.js
@@ -0,0 +1,11 @@
+import { connect } from 'react-redux'
+import TokenList from './token-list.component'
+
+const mapStateToProps = ({ metamask }) => {
+  const { tokens } = metamask
+  return {
+    tokens,
+  }
+}
+
+export default connect(mapStateToProps)(TokenList)
diff --git a/ui/app/pages/add-token/token-search/index.js b/ui/app/pages/add-token/token-search/index.js
new file mode 100644
index 000000000..acaa6b084
--- /dev/null
+++ b/ui/app/pages/add-token/token-search/index.js
@@ -0,0 +1,2 @@
+import TokenSearch from './token-search.component'
+module.exports = TokenSearch
diff --git a/ui/app/pages/add-token/token-search/token-search.component.js b/ui/app/pages/add-token/token-search/token-search.component.js
new file mode 100644
index 000000000..5542a19ff
--- /dev/null
+++ b/ui/app/pages/add-token/token-search/token-search.component.js
@@ -0,0 +1,85 @@
+import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+import contractMap from 'eth-contract-metadata'
+import Fuse from 'fuse.js'
+import InputAdornment from '@material-ui/core/InputAdornment'
+import TextField from '../../../components/ui/text-field'
+
+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: [
+    { name: 'name', weight: 0.5 },
+    { name: 'symbol', weight: 0.5 },
+  ],
+})
+
+export default class TokenSearch extends Component {
+  static contextTypes = {
+    t: PropTypes.func,
+  }
+
+  static defaultProps = {
+    error: null,
+  }
+
+  static propTypes = {
+    onSearch: PropTypes.func,
+    error: PropTypes.string,
+  }
+
+  constructor (props) {
+    super(props)
+
+    this.state = {
+      searchQuery: '',
+    }
+  }
+
+  handleSearch (searchQuery) {
+    this.setState({ searchQuery })
+    const fuseSearchResult = fuse.search(searchQuery)
+    const addressSearchResult = contractList.filter(token => {
+      return token.address.toLowerCase() === searchQuery.toLowerCase()
+    })
+    const results = [...addressSearchResult, ...fuseSearchResult]
+    this.props.onSearch({ searchQuery, results })
+  }
+
+  renderAdornment () {
+    return (
+      <InputAdornment
+        position="start"
+        style={{ marginRight: '12px' }}
+      >
+        <img src="images/search.svg" />
+      </InputAdornment>
+    )
+  }
+
+  render () {
+    const { error } = this.props
+    const { searchQuery } = this.state
+
+    return (
+      <TextField
+        id="search-tokens"
+        placeholder={this.context.t('searchTokens')}
+        type="text"
+        value={searchQuery}
+        onChange={e => this.handleSearch(e.target.value)}
+        error={error}
+        fullWidth
+        startAdornment={this.renderAdornment()}
+      />
+    )
+  }
+}
diff --git a/ui/app/pages/add-token/util.js b/ui/app/pages/add-token/util.js
new file mode 100644
index 000000000..579c56cc0
--- /dev/null
+++ b/ui/app/pages/add-token/util.js
@@ -0,0 +1,13 @@
+import R from 'ramda'
+
+export function checkExistingAddresses (address, tokenList = []) {
+  if (!address) {
+    return false
+  }
+
+  const matchesAddress = existingToken => {
+    return existingToken.address.toLowerCase() === address.toLowerCase()
+  }
+
+  return R.any(matchesAddress)(tokenList)
+}