const { Component } = require('react')
const PropTypes = require('prop-types')
const h = require('react-hyperscript')
import Button from '../../../components/ui/button'

class ConnectScreen extends Component {
  constructor (props) {
    super(props)
    this.state = {
      selectedDevice: null,
    }
  }

    connect = () => {
      if (this.state.selectedDevice) {
        this.props.connectToHardwareWallet(this.state.selectedDevice)
      }
      return null
    }

    renderConnectToTrezorButton () {
      return h(
        `button.hw-connect__btn${this.state.selectedDevice === 'trezor' ? '.selected' : ''}`,
        { onClick: _ => this.setState({selectedDevice: 'trezor'}) },
        h('img.hw-connect__btn__img', {
          src: 'images/trezor-logo.svg',
        })
      )
    }

    renderConnectToLedgerButton () {
      return h(
        `button.hw-connect__btn${this.state.selectedDevice === 'ledger' ? '.selected' : ''}`,
        { onClick: _ => this.setState({selectedDevice: 'ledger'}) },
        h('img.hw-connect__btn__img', {
          src: 'images/ledger-logo.svg',
        })
      )
    }

    renderButtons () {
      return (
        h('div', {}, [
          h('div.hw-connect__btn-wrapper', {}, [
            this.renderConnectToLedgerButton(),
            this.renderConnectToTrezorButton(),
          ]),
          h(Button, {
            type: 'primary',
            large: true,
            className: 'hw-connect__connect-btn',
            onClick: this.connect,
            disabled: !this.state.selectedDevice,
          }, this.context.t('connect')),
        ])
      )
    }

    renderUnsupportedBrowser () {
      return (
        h('div.new-account-connect-form.unsupported-browser', {}, [
          h('div.hw-connect', [
            h('h3.hw-connect__title', {}, this.context.t('browserNotSupported')),
            h('p.hw-connect__msg', {}, this.context.t('chromeRequiredForHardwareWallets')),
          ]),
          h(Button, {
            type: 'primary',
            large: true,
            onClick: () => global.platform.openWindow({
              url: 'https://google.com/chrome',
            }),
          }, this.context.t('downloadGoogleChrome')),
        ])
      )
    }

    renderHeader () {
      return (
        h('div.hw-connect__header', {}, [
          h('h3.hw-connect__header__title', {}, this.context.t('hardwareWallets')),
          h('p.hw-connect__header__msg', {}, this.context.t('hardwareWalletsMsg')),
        ])
      )
    }

    getAffiliateLinks () {
      const links = {
        trezor: `<a class='hw-connect__get-hw__link' href='https://shop.trezor.io/?a=metamask' target='_blank'>Trezor</a>`,
        ledger: `<a class='hw-connect__get-hw__link' href='https://www.ledger.com/products/ledger-nano-s?r=17c4991a03fa&tracker=MY_TRACKER' target='_blank'>Ledger</a>`,
      }

      const text = this.context.t('orderOneHere')
      const response = text.replace('Trezor', links.trezor).replace('Ledger', links.ledger)

      return h('div.hw-connect__get-hw__msg', { dangerouslySetInnerHTML: {__html: response }})
    }

    renderTrezorAffiliateLink () {
      return h('div.hw-connect__get-hw', {}, [
        h('p.hw-connect__get-hw__msg', {}, this.context.t('dontHaveAHardwareWallet')),
        this.getAffiliateLinks(),
      ])
    }


    scrollToTutorial = () => {
      if (this.referenceNode) this.referenceNode.scrollIntoView({behavior: 'smooth'})
    }

    renderLearnMore () {
      return (
        h('p.hw-connect__learn-more', {
          onClick: this.scrollToTutorial,
        }, [
          this.context.t('learnMore'),
          h('img.hw-connect__learn-more__arrow', { src: 'images/caret-right.svg'}),
        ])
      )
    }

    renderTutorialSteps () {
      const steps = [
        {
          asset: 'hardware-wallet-step-1',
          dimensions: {width: '225px', height: '75px'},
          title: this.context.t('step1HardwareWallet'),
          message: this.context.t('step1HardwareWalletMsg'),
        },
        {
          asset: 'hardware-wallet-step-2',
          dimensions: {width: '300px', height: '100px'},
          title: this.context.t('step2HardwareWallet'),
          message: this.context.t('step2HardwareWalletMsg'),
        },
        {
          asset: 'hardware-wallet-step-3',
          dimensions: {width: '120px', height: '90px'},
          title: this.context.t('step3HardwareWallet'),
          message: this.context.t('step3HardwareWalletMsg'),
        },
      ]

      return h('.hw-tutorial', {
        ref: node => { this.referenceNode = node },
      },
      steps.map((step) => (
        h('div.hw-connect', {}, [
          h('h3.hw-connect__title', {}, step.title),
          h('p.hw-connect__msg', {}, step.message),
          h('img.hw-connect__step-asset', { src: `images/${step.asset}.svg`, ...step.dimensions }),
        ])
      ))
      )
    }

    renderFooter () {
      return (
        h('div.hw-connect__footer', {}, [
          h('h3.hw-connect__footer__title', {}, this.context.t('readyToConnect')),
          this.renderButtons(),
          h('p.hw-connect__footer__msg', {}, [
            this.context.t('havingTroubleConnecting'),
            h('a.hw-connect__footer__link', {
              href: 'https://support.metamask.io/',
              target: '_blank',
            }, this.context.t('getHelp')),
          ]),
        ])
      )
    }

    renderConnectScreen () {
      return (
        h('div.new-account-connect-form', {}, [
          this.renderHeader(),
          this.renderButtons(),
          this.renderTrezorAffiliateLink(),
          this.renderLearnMore(),
          this.renderTutorialSteps(),
          this.renderFooter(),
        ])
      )
    }

    render () {
      if (this.props.browserSupported) {
        return this.renderConnectScreen()
      }
      return this.renderUnsupportedBrowser()
    }
}

ConnectScreen.propTypes = {
  connectToHardwareWallet: PropTypes.func.isRequired,
  browserSupported: PropTypes.bool.isRequired,
}

ConnectScreen.contextTypes = {
  t: PropTypes.func,
}

module.exports = ConnectScreen