const inherits = require('util').inherits
const Component = require('react').Component
const connect = require('react-redux').connect
const h = require('react-hyperscript')
const actions = require('../../ui/app/actions')
const log = require('loglevel')
// mascara
const MascaraFirstTime = require('../../mascara/src/app/first-time').default
const MascaraBuyEtherScreen = require('../../mascara/src/app/first-time/buy-ether-screen').default
// init
const InitializeMenuScreen = require('./first-time/init-menu')
const NewKeyChainScreen = require('./new-keychain')
// unlock
const UnlockScreen = require('./unlock')
// accounts
const AccountDetailScreen = require('./account-detail')
const AccountQrScreen = require('./account-qr')
const SendTransactionScreen = require('./send')
const ConfirmTxScreen = require('./conf-tx')
// notice
const NoticeScreen = require('./components/notice')
const generateLostAccountsNotice = require('../lib/lost-accounts-notice')
// other views
const ConfigScreen = require('./config')
const AddTokenScreen = require('./add-token')
const AddSuggestedTokenScreen = require('./add-suggested-token')
const Import = require('./accounts/import')
const InfoScreen = require('./info')
const NewUiAnnouncement = require('./new-ui-annoucement')
const AppBar = require('./components/app-bar')
const Loading = require('./components/loading')
const BuyView = require('./components/buy-button-subview')
const HDCreateVaultComplete = require('./keychains/hd/create-vault-complete')
const HDRestoreVaultScreen = require('./keychains/hd/restore-vault')
const RevealSeedConfirmation = require('./keychains/hd/recover-seed/confirmation')
const ProviderApproval = require('./provider-approval')

module.exports = connect(mapStateToProps)(App)

inherits(App, Component)
function App () { Component.call(this) }

function mapStateToProps (state) {
  const {
    identities,
    accounts,
    address,
    keyrings,
    isInitialized,
    noActiveNotices,
    seedWords,
    featureFlags,
    providerRequests,
  } = state.metamask
  const selected = address || Object.keys(accounts)[0]

  return {
    // state from plugin
    isLoading: state.appState.isLoading,
    loadingMessage: state.appState.loadingMessage,
    noActiveNotices: state.metamask.noActiveNotices,
    isInitialized: state.metamask.isInitialized,
    isUnlocked: state.metamask.isUnlocked,
    currentView: state.appState.currentView,
    selectedAddress: state.metamask.selectedAddress,
    transForward: state.appState.transForward,
    isMascara: state.metamask.isMascara,
    isOnboarding: Boolean(!noActiveNotices || seedWords || !isInitialized),
    seedWords: state.metamask.seedWords,
    unapprovedTxs: state.metamask.unapprovedTxs,
    unapprovedMsgs: state.metamask.unapprovedMsgs,
    menuOpen: state.appState.menuOpen,
    network: state.metamask.network,
    provider: state.metamask.provider,
    forgottenPassword: state.appState.forgottenPassword,
    nextUnreadNotice: state.metamask.nextUnreadNotice,
    lostAccounts: state.metamask.lostAccounts,
    frequentRpcListDetail: state.metamask.frequentRpcListDetail || [],
    featureFlags,
    providerRequests,
    suggestedTokens: state.metamask.suggestedTokens,

    // state needed to get account dropdown temporarily rendering from app bar
    identities,
    selected,
    keyrings,
  }
}

App.prototype.render = function () {
  const {
    currentView,
    dispatch,
    isLoading,
    loadingMessage,
    transForward,
    network,
    featureFlags,
  } = this.props
  const isLoadingNetwork = network === 'loading' && currentView.name !== 'config'
  const loadMessage = loadingMessage || isLoadingNetwork
    ? `Connecting to ${this.getNetworkName()}`
    : null
  log.debug('Main ui render function')

  if (!featureFlags.skipAnnounceBetaUI) {
    return (
      h(NewUiAnnouncement, {
        dispatch,
      })
    )
  }

  return (
    h('.flex-column.full-height', {
      style: {
        // Windows was showing a vertical scroll bar:
        overflow: 'hidden',
        position: 'relative',
        alignItems: 'center',
      },
    }, [
      h(AppBar, {
        ...this.props,
      }),
      this.renderLoadingIndicator({ isLoading, isLoadingNetwork, loadMessage }),

      // panel content
      h('.app-primary' + (transForward ? '.from-right' : '.from-left'), {
        style: {
          width: '100%',
        },
      }, [
        this.renderPrimary(),
      ]),
    ])
  )
}
App.prototype.renderLoadingIndicator = function ({ isLoading, isLoadingNetwork, loadMessage }) {
  const { isMascara } = this.props

  return isMascara
    ? null
    : h(Loading, {
      isLoading: isLoading || isLoadingNetwork,
      loadingMessage: loadMessage,
    })
}

App.prototype.renderPrimary = function () {
  log.debug('rendering primary')
  var props = this.props
  const {isMascara, isOnboarding, providerRequests} = props

  if (isMascara && isOnboarding) {
    return h(MascaraFirstTime)
  }

  // notices
  if (!props.noActiveNotices) {
    log.debug('rendering notice screen for unread notices.')
    return h('div', {
      style: { width: '100%' },
    }, [

      h(NoticeScreen, {
        notice: props.nextUnreadNotice,
        key: 'NoticeScreen',
        onConfirm: () => props.dispatch(actions.markNoticeRead(props.nextUnreadNotice)),
      }),
    ])
  } else if (props.lostAccounts && props.lostAccounts.length > 0) {
    log.debug('rendering notice screen for lost accounts view.')
    return h(NoticeScreen, {
      notice: generateLostAccountsNotice(props.lostAccounts),
      key: 'LostAccountsNotice',
      onConfirm: () => props.dispatch(actions.markAccountsFound()),
    })
  }

  // show initialize screen
  if (!props.isInitialized || props.forgottenPassword) {
    // show current view
    log.debug('rendering an initialize screen')
    switch (props.currentView.name) {

      case 'restoreVault':
        log.debug('rendering restore vault screen')
        return h(HDRestoreVaultScreen, {key: 'HDRestoreVaultScreen'})

      default:
        log.debug('rendering menu screen')
        return h(InitializeMenuScreen, {key: 'menuScreenInit'})
    }
  }

  // show unlock screen
  if (!props.isUnlocked) {
    switch (props.currentView.name) {

      case 'restoreVault':
        log.debug('rendering restore vault screen')
        return h(HDRestoreVaultScreen, {key: 'HDRestoreVaultScreen'})

      case 'config':
        log.debug('rendering config screen from unlock screen.')
        return h(ConfigScreen, {key: 'config'})

      default:
        log.debug('rendering locked screen')
        return h(UnlockScreen, {key: 'locked'})
    }
  }

  // show seed words screen
  if (props.seedWords) {
    log.debug('rendering seed words')
    return h(HDCreateVaultComplete, {key: 'HDCreateVaultComplete'})
  }

  if (providerRequests && providerRequests.length > 0) {
    log.debug('rendering provider API approval screen')
    return h(ProviderApproval, { origin: providerRequests[0].origin })
  }

  // show current view
  switch (props.currentView.name) {

    case 'accountDetail':
      log.debug('rendering account detail screen')
      return h(AccountDetailScreen, {key: 'account-detail'})

    case 'sendTransaction':
      log.debug('rendering send tx screen')
      return h(SendTransactionScreen, {key: 'send-transaction'})

    case 'newKeychain':
      log.debug('rendering new keychain screen')
      return h(NewKeyChainScreen, {key: 'new-keychain'})

    case 'confTx':
      log.debug('rendering confirm tx screen')
      return h(ConfirmTxScreen, {key: 'confirm-tx'})

    case 'add-token':
      log.debug('rendering add-token screen from unlock screen.')
      return h(AddTokenScreen, {key: 'add-token'})

    case 'add-suggested-token':
      log.debug('rendering add-suggested-token screen from unlock screen.')
      return h(AddSuggestedTokenScreen, {key: 'add-suggested-token'})

    case 'config':
      log.debug('rendering config screen')
      return h(ConfigScreen, {key: 'config'})

    case 'import-menu':
      log.debug('rendering import screen')
      return h(Import, {key: 'import-menu'})

    case 'reveal-seed-conf':
      log.debug('rendering reveal seed confirmation screen')
      return h(RevealSeedConfirmation, {key: 'reveal-seed-conf'})

    case 'info':
      log.debug('rendering info screen')
      return h(InfoScreen, {key: 'info'})

    case 'buyEth':
      log.debug('rendering buy ether screen')
      return h(BuyView, {key: 'buyEthView'})

    case 'onboardingBuyEth':
      log.debug('rendering onboarding buy ether screen')
      return h(MascaraBuyEtherScreen, {key: 'buyEthView'})

    case 'qr':
      log.debug('rendering show qr screen')
      return h(AccountQrScreen, {
        key: 'account-qr',
        selectedAddress: props.selectedAddress,
      })

    default:
      log.debug('rendering default, account detail screen')
      return h(AccountDetailScreen, {key: 'account-detail'})
  }
}

App.prototype.toggleMetamaskActive = function () {
  if (!this.props.isUnlocked) {
    // currently inactive: redirect to password box
    var passwordBox = document.querySelector('input[type=password]')
    if (!passwordBox) return
    passwordBox.focus()
  } else {
    // currently active: deactivate
    this.props.dispatch(actions.lockMetamask(false))
  }
}
App.prototype.getNetworkName = function () {
  const { provider } = this.props
  const providerName = provider.type

  let name

  if (providerName === 'mainnet') {
    name = 'Main Ethereum Network'
  } else if (providerName === 'ropsten') {
    name = 'Ropsten Test Network'
  } else if (providerName === 'kovan') {
    name = 'Kovan Test Network'
  } else if (providerName === 'rinkeby') {
    name = 'Rinkeby Test Network'
  } else {
    name = 'Unknown Private Network'
  }

  return name
}