const inherits = require('util').inherits const Component = require('react').Component const classnames = require('classnames') const h = require('react-hyperscript') const connect = require('./metamask-connect') const R = require('ramda') 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: [ { name: 'name', weight: 0.5 }, { name: 'symbol', weight: 0.5 }, ], }) const actions = require('./actions') const ethUtil = require('ethereumjs-util') const { tokenInfoGetter } = require('./token-util') 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: '', searchQuery: '', selectedTokens: {}, errors: {}, autoFilled: false, displayedTab: 'SEARCH', } this.tokenAddressDidChange = this.tokenAddressDidChange.bind(this) this.tokenSymbolDidChange = this.tokenSymbolDidChange.bind(this) this.tokenDecimalsDidChange = this.tokenDecimalsDidChange.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 selectedTokensCopy = { ...selectedTokens } if (address in selectedTokensCopy) { delete selectedTokensCopy[address] } else { selectedTokensCopy[address] = token } this.setState({ selectedTokens: selectedTokensCopy, 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.tokenSymbolDidChange = function (e) { const customSymbol = e.target.value.trim() this.setState({ customSymbol }) } AddTokenScreen.prototype.tokenDecimalsDidChange = function (e) { const customDecimals = e.target.value.trim() this.setState({ customDecimals }) } 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 = this.props.t('invalidAddress') } const validDecimals = customDecimals !== null && customDecimals !== '' && customDecimals >= 0 && customDecimals < 36 if (!validDecimals) { errors.customDecimals = this.props.t('decimalsMustZerotoTen') } const symbolLen = customSymbol.trim().length const validSymbol = symbolLen > 0 && symbolLen < 10 if (!validSymbol) { errors.customSymbol = this.props.t('symbolBetweenZeroTen') } const ownAddress = identitiesList.includes(standardAddress) if (ownAddress) { errors.customAddress = this.props.t('personalAddressDetected') } const tokenAlreadyAdded = this.checkExistingAddresses(customAddress) if (tokenAlreadyAdded) { errors.customAddress = this.props.t('tokenAlreadyAdded') } } else if ( Object.entries(selectedTokens) .reduce((isEmpty, [ symbol, isSelected ]) => ( isEmpty && !isSelected ), true) ) { errors.tokenSelector = this.props.t('mustSelectOne') } 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(), autoFilled: true, }) } } AddTokenScreen.prototype.renderCustomForm = function () { const { autoFilled, customAddress, customSymbol, customDecimals, errors } = this.state return ( 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', this.props.t('tokenAddress')), 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', this.props.t('tokenSymbol')), h('input.add-token__add-custom-input', { type: 'text', onChange: this.tokenSymbolDidChange, value: customSymbol, disabled: autoFilled, }), 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', this.props.t('decimal')), h('input.add-token__add-custom-input', { type: 'number', onChange: this.tokenDecimalsDidChange, value: customDecimals, disabled: autoFilled, }), h('div.add-token__add-custom-error-message', errors.customDecimals), ]), ]) ) } AddTokenScreen.prototype.renderTokenList = function () { const { searchQuery = '', selectedTokens } = this.state const fuseSearchResult = fuse.search(searchQuery) const addressSearchResult = contractList.filter(token => { return token.address.toLowerCase() === searchQuery.toLowerCase() }) const results = [...addressSearchResult, ...fuseSearchResult] return h('div', [ results.length > 0 && h('div.add-token__token-icons-title', this.props.t('popularTokens')), h('div.add-token__token-icons-container', 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: logo && `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, goHome } = 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__description', this.props.t('likeToAddTokens')), ]), h('div.add-token__content-container.add-token__confirmation-content', [ h('div.add-token__description.add-token__confirmation-description', this.props.t('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--lg.add-token__cancel-button', { onClick: () => this.setState({ isShowingConfirmation: false }), }, this.props.t('back')), h('button.btn-primary--lg', { onClick: () => addTokens(tokens).then(goHome), }, this.props.t('addTokens')), ]), ]) ) } AddTokenScreen.prototype.displayTab = function (selectedTab) { this.setState({ displayedTab: selectedTab }) } AddTokenScreen.prototype.renderTabs = function () { const { displayedTab, errors } = this.state return displayedTab === 'CUSTOM_TOKEN' ? this.renderCustomForm() : h('div', [ h('div.add-token__wrapper', [ h('div.add-token__content-container', [ h('div.add-token__info-box', [ h('div.add-token__info-box__close'), h('div.add-token__info-box__title', this.props.t('whatsThis')), h('div.add-token__info-box__copy', this.props.t('keepTrackTokens')), h('div.add-token__info-box__copy--blue', this.props.t('learnMore')), ]), h('div.add-token__input-container', [ h('input.add-token__input', { type: 'text', placeholder: this.props.t('searchTokens'), onChange: e => this.setState({ searchQuery: e.target.value }), }), h('div.add-token__search-input-error-message', errors.tokenSelector), ]), this.renderTokenList(), ]), ]), ]) } AddTokenScreen.prototype.render = function () { const { isShowingConfirmation, displayedTab, } = this.state const { goHome } = this.props return h('div.add-token', [ h('div.add-token__header', [ h('div.add-token__header__cancel', { onClick: () => goHome(), }, [ h('i.fa.fa-angle-left.fa-lg'), h('span', this.props.t('cancel')), ]), h('div.add-token__header__title', this.props.t('addTokens')), !isShowingConfirmation && h('div.add-token__header__tabs', [ h('div.add-token__header__tabs__tab', { className: classnames('add-token__header__tabs__tab', { 'add-token__header__tabs__selected': displayedTab === 'SEARCH', 'add-token__header__tabs__unselected cursor-pointer': displayedTab !== 'SEARCH', }), onClick: () => this.displayTab('SEARCH'), }, this.props.t('search')), h('div.add-token__header__tabs__tab', { className: classnames('add-token__header__tabs__tab', { 'add-token__header__tabs__selected': displayedTab === 'CUSTOM_TOKEN', 'add-token__header__tabs__unselected cursor-pointer': displayedTab !== 'CUSTOM_TOKEN', }), onClick: () => this.displayTab('CUSTOM_TOKEN'), }, this.props.t('customToken')), ]), ]), // isShowingConfirmation ? this.renderConfirmation() : this.renderTabs(), !isShowingConfirmation && h('div.add-token__buttons', [ h('button.btn-secondary--lg.add-token__cancel-button', { onClick: goHome, }, this.props.t('cancel')), h('button.btn-primary--lg.add-token__confirm-button', { onClick: this.onNext, }, this.props.t('next')), ]), ]) }