const inherits = require('util').inherits
const Component = require('react').Component
const h = require('react-hyperscript')
const connect = require('react-redux').connect
const Fuse = require('fuse.js')
const contractMap = require('eth-contract-metadata')
const contractList = Object.entries(contractMap).map(([ _, tokenData]) => tokenData)
const fuse = new Fuse(contractList, {
shouldSort: true,
threshold: 0.3,
location: 0,
distance: 100,
maxPatternLength: 32,
minMatchCharLength: 1,
keys: ['address', 'name', 'symbol'],
})
// const actions = require('./actions')
// const Tooltip = require('./components/tooltip.js')
const ethUtil = require('ethereumjs-util')
const abi = require('human-standard-token-abi')
const Eth = require('ethjs-query')
const EthContract = require('ethjs-contract')
const emptyAddr = '0x0000000000000000000000000000000000000000'
module.exports = connect(mapStateToProps)(AddTokenScreen)
function mapStateToProps (state) {
return {
identities: state.metamask.identities,
}
}
inherits(AddTokenScreen, Component)
function AddTokenScreen () {
this.state = {
// warning: null,
// address: null,
// symbol: 'TOKEN',
// decimals: 18,
searchQuery: '',
isCollapsed: true,
}
Component.call(this)
}
AddTokenScreen.prototype.renderCustomForm = function () {
return !this.state.isCollapsed && (
h('div.add-token__add-custom-form', [
h('div.add-token__add-custom-field', [
h('div.add-token__add-custom-label', 'Token Address'),
h('input.add-token__add-custom-input', { type: 'text' }),
]),
h('div.add-token__add-custom-field', [
h('div.add-token__add-custom-label', 'Token Symbol'),
h('input.add-token__add-custom-input', { type: 'text', disabled: true }),
]),
h('div.add-token__add-custom-field', [
h('div.add-token__add-custom-label', 'Decimals of Precision'),
h('input.add-token__add-custom-input', { type: 'text', disabled: true }),
]),
])
)
}
AddTokenScreen.prototype.renderTokenList = function () {
const { searchQuery = '' } = this.state
const results = searchQuery
? fuse.search(searchQuery) || []
: contractList
return Array(6).fill(undefined)
.map((_, i) => {
const { logo, symbol, name } = results[i] || {}
console.log({ i, logo, symbol, name })
return Boolean(logo || symbol || name) && (
h('div.add-token__token-wrapper', [
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),
]),
])
)
})
}
AddTokenScreen.prototype.render = function () {
const { isCollapsed } = this.state
return (
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__token-icons-container',
this.renderTokenList(),
),
]),
h('div.add-token__footers', [
h('div.add-token__add-custom', {
onClick: () => this.setState({ isCollapsed: !isCollapsed }),
}, 'Add custom token'),
this.renderCustomForm(),
]),
]),
h('div.add-token__buttons', [
h('button.btn-secondary', 'Next'),
h('button.btn-tertiary', 'Cancel'),
]),
])
)
}
// AddTokenScreen.prototype.render = function () {
// const state = this.state
// const props = this.props
// const { warning, symbol, decimals } = state
// return (
// h('.flex-column.flex-grow', [
// // subtitle and nav
// h('.section-title.flex-row.flex-center', [
// h('i.fa.fa-arrow-left.fa-lg.cursor-pointer', {
// onClick: (event) => {
// props.dispatch(actions.goHome())
// },
// }),
// h('h2.page-subtitle', 'Add Token'),
// ]),
// h('.error', {
// style: {
// display: warning ? 'block' : 'none',
// padding: '0 20px',
// textAlign: 'center',
// },
// }, warning),
// // conf view
// h('.flex-column.flex-justify-center.flex-grow.select-none', [
// h('.flex-space-around', {
// style: {
// padding: '20px',
// },
// }, [
// h('div', [
// h(Tooltip, {
// position: 'top',
// title: 'The contract of the actual token contract. Click for more info.',
// }, [
// h('a', {
// style: { fontWeight: 'bold', paddingRight: '10px'},
// href: 'https://consensyssupport.happyfox.com/staff/kb/article/24-what-is-a-token-contract-address',
// target: '_blank',
// }, [
// h('span', 'Token Contract Address '),
// h('i.fa.fa-question-circle'),
// ]),
// ]),
// ]),
// h('section.flex-row.flex-center', [
// h('input#token-address', {
// name: 'address',
// placeholder: 'Token Contract Address',
// onChange: this.tokenAddressDidChange.bind(this),
// style: {
// width: 'inherit',
// flex: '1 0 auto',
// height: '30px',
// margin: '8px',
// },
// }),
// ]),
// h('div', [
// h('span', {
// style: { fontWeight: 'bold', paddingRight: '10px'},
// }, 'Token Symbol'),
// ]),
// h('div', { style: {display: 'flex'} }, [
// h('input#token_symbol', {
// placeholder: `Like "ETH"`,
// value: symbol,
// style: {
// width: 'inherit',
// flex: '1 0 auto',
// height: '30px',
// margin: '8px',
// },
// onChange: (event) => {
// var element = event.target
// var symbol = element.value
// this.setState({ symbol })
// },
// }),
// ]),
// h('div', [
// h('span', {
// style: { fontWeight: 'bold', paddingRight: '10px'},
// }, 'Decimals of Precision'),
// ]),
// h('div', { style: {display: 'flex'} }, [
// h('input#token_decimals', {
// value: decimals,
// type: 'number',
// min: 0,
// max: 36,
// style: {
// width: 'inherit',
// flex: '1 0 auto',
// height: '30px',
// margin: '8px',
// },
// onChange: (event) => {
// var element = event.target
// var decimals = element.value.trim()
// this.setState({ decimals })
// },
// }),
// ]),
// h('button', {
// style: {
// alignSelf: 'center',
// },
// onClick: (event) => {
// const valid = this.validateInputs()
// if (!valid) return
// const { address, symbol, decimals } = this.state
// this.props.dispatch(actions.addToken(address.trim(), symbol.trim(), decimals))
// },
// }, 'Add'),
// ]),
// ]),
// ])
// )
// }
AddTokenScreen.prototype.componentWillMount = function () {
if (typeof global.ethereumProvider === 'undefined') return
this.eth = new Eth(global.ethereumProvider)
this.contract = new EthContract(this.eth)
this.TokenContract = this.contract(abi)
}
AddTokenScreen.prototype.tokenAddressDidChange = function (event) {
const el = event.target
const address = el.value.trim()
if (ethUtil.isValidAddress(address) && address !== emptyAddr) {
this.setState({ address })
this.attemptToAutoFillTokenParams(address)
}
}
AddTokenScreen.prototype.validateInputs = function () {
let msg = ''
const state = this.state
const identitiesList = Object.keys(this.props.identities)
const { address, symbol, decimals } = state
const standardAddress = ethUtil.addHexPrefix(address).toLowerCase()
const validAddress = ethUtil.isValidAddress(address)
if (!validAddress) {
msg += 'Address is invalid. '
}
const validDecimals = decimals >= 0 && decimals < 36
if (!validDecimals) {
msg += 'Decimals must be at least 0, and not over 36. '
}
const symbolLen = symbol.trim().length
const validSymbol = symbolLen > 0 && symbolLen < 10
if (!validSymbol) {
msg += 'Symbol must be between 0 and 10 characters.'
}
const ownAddress = identitiesList.includes(standardAddress)
if (ownAddress) {
msg = 'Personal address detected. Input the token contract address.'
}
const isValid = validAddress && validDecimals && !ownAddress
if (!isValid) {
this.setState({
warning: msg,
})
} else {
this.setState({ warning: null })
}
return isValid
}
AddTokenScreen.prototype.attemptToAutoFillTokenParams = async function (address) {
const contract = this.TokenContract.at(address)
const results = await Promise.all([
contract.symbol(),
contract.decimals(),
])
const [ symbol, decimals ] = results
if (symbol && decimals) {
this.setState({ symbol: symbol[0], decimals: decimals[0].toString() })
}
}
