const { inherits } = require('util')
const PersistentForm = require('../lib/persistent-form')
const h = require('react-hyperscript')
const connect = require('react-redux').connect
const Identicon = require('./components/identicon')
const EnsInput = require('./components/ens-input')
const GasTooltip = require('./components/send/gas-tooltip')
const CurrencyToggle = require('./components/send/currency-toggle')
const GasFeeDisplay = require('./components/send/gas-fee-display')
const { getSelectedIdentity } = require('./selectors')

const {
  setCurrentCurrency,
  showAccountsPage,
  backToAccountDetail,
  displayWarning,
  hideWarning,
  addToAddressBook,
  signTx,
} = require('./actions')
const { stripHexPrefix, addHexPrefix } = require('ethereumjs-util')
const { isHex, numericBalance } = require('./util')

const ARAGON = '960b236A07cf122663c4303350609A66A7B288C0'

module.exports = connect(mapStateToProps)(SendTransactionScreen)

function mapStateToProps (state) {
  const {
    selectedAddress: address,
    accounts,
    identities,
    network,
    addressBook,
    conversionRate,
    currentCurrency,
    currentBlockGasLimit: blockGasLimit,
  } = state.metamask
  const { warning } = state.appState
  const selectedIdentity = getSelectedIdentity(state)
  const account = accounts[address]

  return {
    address,
    accounts,
    identities,
    network,
    addressBook,
    conversionRate,
    currentCurrency,
    blockGasLimit,
    warning,
    selectedIdentity,
    error: warning && warning.split('.')[0],
    account,
    identity: identities[address],
    balance: account ? numericBalance(account.balance) : null,
  }
}

inherits(SendTransactionScreen, PersistentForm)
function SendTransactionScreen () {
  PersistentForm.call(this)

  // [WIP] These are the bare minimum of tx props needed to sign a transaction
  // We will need a few more for contract-related interactions
  this.state = {
    newTx: {
      from: '',
      to: '',
      // these values are hardcoded, so "Next" can be clicked
      amount: '0x0', // see L544
      gasPrice: '0x5d21dba00',
      gas: '0x7b0d',
      txData: null,
      memo: '',
    },
    tooltipIsOpen: false,
  }

  this.back = this.back.bind(this)
  this.closeTooltip = this.closeTooltip.bind(this)
  this.onSubmit = this.onSubmit.bind(this)
  this.recipientDidChange = this.recipientDidChange.bind(this)
  this.setCurrentCurrency = this.setCurrentCurrency.bind(this)
  this.toggleTooltip = this.toggleTooltip.bind(this)
}

SendTransactionScreen.prototype.render = function () {
  this.persistentFormParentId = 'send-tx-form'

  const props = this.props
  const {
    selectedIdentity,
    network,
    identities,
    addressBook,
    conversionRate,
    currentCurrency,
  } = props

  const { blockGasLimit, newTx } = this.state
  const { gas, gasPrice } = newTx

  console.log({ selectedIdentity, identities })
  console.log('SendTransactionScreen state:', this.state)

  return (

    h('div.send-screen-wrapper', {
      style: {},
    }, [

      // Main Send token Card
      h('div.send-screen-card', {
        style: {},
      }, [

        h('img.send-eth-icon', {
          src: '../images/eth_logo.svg',
          style: {},
        }),

        h('div', {}, [
          'Send',
        ]),

        h('div', {
          style: {
            textAlign: 'center',
          },
        }, [
          'Send Ethereum to anyone with an Ethereum account',
        ]),

        h('div.send-screen-input-wrapper', {}, [

          h('div', {}, [
            'From:',
          ]),

          h('input.large-input.send-screen-input', {
            list: 'accounts',
            placeholder: 'Account',
            value: this.state.newTx.from,
            onChange: (event) => {
              console.log('event', event.target.value)
              this.setState({
                newTx: {
                  ...this.state.newTx,
                  from: event.target.value,
                },
              })
            },
          }, [
          ]),

          h('datalist#accounts', {}, [
            Object.keys(props.identities).map((key) => {
              const identity = props.identities[key]
              return h('option', {
                value: identity.address,
                label: identity.name,
                key: identity.address,
              })
            }),
          ]),

        ]),

        h('div.send-screen-input-wrapper', {}, [

          h('div', {}, [
            'To:',
          ]),

          h('input.large-input.send-screen-input', {
            name: 'address',
            list: 'addresses',
            placeholder: 'Address',
            value: this.state.newTx.to,
            onChange: (event) => {
              console.log('event', event.target.value)
              this.setState({
                newTx: {
                  ...this.state.newTx,
                  to: event.target.value,
                },
              })
            },
          }, [
          ]),

          h('datalist#addresses', {}, [
            // Corresponds to the addresses owned.
            Object.entries(props.identities).map(([key, { address, name }]) => {
              return h('option', {
                value: address,
                label: name,
                key: address,
              })
            }),
            // Corresponds to previously sent-to addresses.
            props.addressBook.map(({ address, name }) => {
              return h('option', {
                value: address,
                label: name,
                key: address,
              })
            }),
          ]),

          // h(EnsInput, {
          //   name: 'address',
          //   placeholder: 'Recipient Address',
          //   value: this.state.newTx.to,
          //   onChange: (event) => {
          //     this.setState({
          //       newTx: Object.assign(
          //         this.state.newTx,
          //         {
          //           to: event.target.value,
          //         }
          //       ),
          //     })
          //   },
          //   network,
          //   identities,
          //   addressBook,
          // }),

        ]),

        h('div.send-screen-input-wrapper', {}, [

          h('div.send-screen-amount-labels', {}, [
            h('span', {}, ['Amount']),
            h(CurrencyToggle, {
              currentCurrency,
              onClick: (newCurrency) => this.setCurrentCurrency(newCurrency),
            }), // holding on icon from design
          ]),

          h('input.large-input.send-screen-input', {
            placeholder: '0 ETH',
            type: 'number',
            onChange: (event) => {
              this.setState({
                newTx: Object.assign(
                  this.state.newTx,
                  {
                    amount: event.target.value,
                  }
                ),
              })
            },
          }, []),

        ]),

        h('div.send-screen-input-wrapper', {}, [
          this.state.tooltipIsOpen && h(GasTooltip, {
            className: 'send-tooltip',
            gasPrice,
            gasLimit: gas,
            onClose: this.closeTooltip,
            onFeeChange: ({gasLimit, gasPrice}) => {
              this.setState({
                newTx: {
                  ...this.state.newTx,
                  gas: gasLimit,
                  gasPrice,
                },
              })
            }
          }),

          h('div.send-screen-gas-labels', {}, [
            h('span', {}, [
              h('i.fa.fa-bolt', {}, []),

              // not working ATM.
              // Ship with fa-bolt if it's slowing us down...
              // h('img.send-screen-bolt-icon', {
              //   src: '../images/mm_bolt.svg',
              //   style: {},
              // }, []),

              'Gas fee:',
            ]),
            h('span', {}, ['What\'s this?']),
          ]),

          // TODO: handle loading time when switching to USD
          h('div.large-input.send-screen-gas-input', {}, [
            h(GasFeeDisplay, {
              currentCurrency,
              conversionRate,
              gas,
              gasPrice,
              blockGasLimit,
            }),
            h('div.send-screen-gas-input-customize', {
              onClick: this.toggleTooltip,
            }, [
              'Customize',
            ]),
          ]),
          
        ]),

        h('div.send-screen-input-wrapper', {}, [

          h('div', {}, ['Transaction memo (optional)']),

          h('input.large-input.send-screen-input', {
            onChange: () => {
              this.setState({
                newTx: Object.assign(
                  this.state.newTx,
                  {
                    memo: event.target.value,
                  }
                ),
              })
            },
          }, [
          ]),

        ]),

        h('div.send-screen-input-wrapper', {}, [

          h('div', {}, ['Data (optional)']),

          h('input.large-input.send-screen-input', {
            onChange: () => {
              this.setState({
                newTx: Object.assign(
                  this.state.newTx,
                  {
                    txData: event.target.value,
                  }
                ),
              })
            },
          }, [
          ]),

        ]),

      ]),

      // Buttons underneath card
      h('section.flex-column.flex-center', [

        h('button.btn-light', {
          onClick: this.onSubmit,
          style: {
            marginTop: '8px',
            width: '8em',
            background: '#FFFFFF',
          },
        }, 'Next'),

        h('button.btn-light', {
          onClick: this.back,
          style: {
            background: '#F7F7F7', // $alabaster
            border: 'none',
            opacity: 1,
            width: '8em',
          },
        }, 'Cancel'),
      ]),
    ])

  )
}

// WIP - hyperscript for renderSendToken - hook up later - can take pieces to re-implement
SendTransactionScreen.prototype.renderSendToken = function () {
  this.persistentFormParentId = 'send-tx-form'

  const props = this.props
  const {
    network,
    identities,
    addressBook,
  } = props

  return (

    h('div.flex-column.flex-grow', {
      style: {
        minWidth: '355px', // TODO: maxWidth TBD, use home.html
      },
    }, [

      // Main Send token Card
      h('div.send-screen.flex-column.flex-grow', {
        style: {
          marginLeft: '3.5%',
          marginRight: '3.5%',
          background: '#FFFFFF', // $background-white
          boxShadow: '0 2px 4px 0 rgba(0,0,0,0.08)',
        },
      }, [
        h('section.flex-center.flex-row', {
          style: {
            zIndex: 15, // $token-icon-z-index
            marginTop: '-35px',
          },
        }, [
          h(Identicon, {
            address: ARAGON,
            diameter: 76,
          }),
        ]),

        h('h3.flex-center', {
          style: {
            marginTop: '-18px',
            fontSize: '16px',
          },
        }, [
          'Send Tokens',
        ]),

        h('h3.flex-center', {
          style: {
            textAlign: 'center',
            fontSize: '12px',
          },
        }, [
          'Send Tokens to anyone with an Ethereum account',
        ]),

        h('h3.flex-center', {
          style: {
            textAlign: 'center',
            marginTop: '2px',
            fontSize: '12px',
          },
        }, [
          'Your Aragon Token Balance is:',
        ]),

        h('h3.flex-center', {
          style: {
            textAlign: 'center',
            fontSize: '36px',
            marginTop: '8px',
          },
        }, [
          '2.34',
        ]),

        h('h3.flex-center', {
          style: {
            textAlign: 'center',
            fontSize: '12px',
            marginTop: '4px',
          },
        }, [
          'ANT',
        ]),

        // error message
        props.error && h('span.error.flex-center', props.error),

        // 'to' field
        h('section.flex-row.flex-center', {
          style: {
            fontSize: '12px',
          },
        }, [
          h(EnsInput, {
            name: 'address',
            placeholder: 'Recipient Address',
            onChange: this.recipientDidChange,
            network,
            identities,
            addressBook,
          }),
        ]),

        // 'amount' and send button
        h('section.flex-column.flex-center', [
          h('div.flex-row.flex-center', {
            style: {
              fontSize: '12px',
              width: '100%',
              justifyContent: 'space-between',
            },
          }, [
            h('span', { style: {} }, ['Amount']),
            h('span', { style: {} }, ['Token <> USD']),
          ]),

          h('input.large-input', {
            name: 'amount',
            placeholder: '0',
            type: 'number',
            style: {
              marginRight: '6px',
              fontSize: '12px',
            },
            dataset: {
              persistentFormId: 'tx-amount',
            },
          }),

        ]),

        h('section.flex-column.flex-center', [
          h('div.flex-row.flex-center', {
            style: {
              fontSize: '12px',
              width: '100%',
              justifyContent: 'space-between',
            },
          }, [
            h('span', { style: {} }, ['Gas Fee:']),
            h('span', { style: { fontSize: '8px' } }, ['What\'s this?']),
          ]),

          h('input.large-input', {
            name: 'Gas Fee',
            placeholder: '0',
            type: 'number',
            style: {
              fontSize: '12px',
              marginRight: '6px',
            },
            // dataset: {
            //   persistentFormId: 'tx-amount',
            // },
          }),

        ]),

        h('section.flex-column.flex-center', {
          style: {
            marginBottom: '10px',
          },
        }, [
          h('div.flex-row.flex-center', {
            style: {
              fontSize: '12px',
              width: '100%',
              justifyContent: 'flex-start',
            },
          }, [
            h('span', { style: {} }, ['Transaction Memo (optional)']),
          ]),

          h('input.large-input', {
            name: 'memo',
            placeholder: '',
            type: 'string',
            style: {
              marginRight: '6px',
            },
          }),
        ]),
      ]),

      // Buttons underneath card
      h('section.flex-column.flex-center', [

        h('button.btn-light', {
          onClick: this.onSubmit,
          style: {
            marginTop: '8px',
            width: '8em',
            background: '#FFFFFF',
          },
        }, 'Next'),

        h('button.btn-light', {
          onClick: this.back,
          style: {
            background: '#F7F7F7', // $alabaster
            border: 'none',
            opacity: 1,
            width: '8em',
          },
        }, 'Cancel'),
      ]),
    ])

  )
}

SendTransactionScreen.prototype.toggleTooltip = function () {
  this.setState({ tooltipIsOpen: !this.state.tooltipIsOpen })
}

SendTransactionScreen.prototype.closeTooltip = function () {
  this.setState({ tooltipIsOpen: false })
}

SendTransactionScreen.prototype.setCurrentCurrency = function (newCurrency) {
  this.props.dispatch(setCurrentCurrency(newCurrency))
}

SendTransactionScreen.prototype.navigateToAccounts = function (event) {
  event.stopPropagation()
  this.props.dispatch(showAccountsPage())
}

SendTransactionScreen.prototype.back = function () {
  var address = this.props.address
  this.props.dispatch(backToAccountDetail(address))
}

SendTransactionScreen.prototype.recipientDidChange = function (recipient, nickname) {
  this.setState({
    recipient: recipient,
    nickname: nickname,
  })
}

SendTransactionScreen.prototype.onSubmit = function () {
  const state = this.state || {}

  // const recipient = state.recipient || document.querySelector('input[name="address"]').value.replace(/^[.\s]+|[.\s]+$/g, '')
  const recipient = state.newTx.to

  const nickname = state.nickname || ' '

  // const input = document.querySelector('input[name="amount"]').value
  // const input = state.newTx.value
  // const value = util.normalizeEthStringToWei(input)

  // https://consensys.slack.com/archives/G1L7H42BT/p1503439134000169?thread_ts=1503438076.000411&cid=G1L7H42BT
  // From @kumavis: "not needed for MVP but we will end up adding it again so consider just adding it now"
  const txData = false
  // Must replace with memo data.
  // const txData = document.querySelector('input[name="txData"]').value

  let message

  // if (value.gt(balance)) {
  //   message = 'Insufficient funds.'
  //   return this.props.dispatch(actions.displayWarning(message))
  // }

  // if (input < 0) {
  //   message = 'Can not send negative amounts of ETH.'
  //   return this.props.dispatch(actions.displayWarning(message))
  // }

  // if ((!util.isValidAddress(recipient) && !txData) || (!recipient && !txData)) {
  //   message = 'Recipient address is invalid.'
  //   return this.props.dispatch(actions.displayWarning(message))
  // }

  if (txData && !isHex(stripHexPrefix(txData))) {
    message = 'Transaction data must be hex string.'
    return this.props.dispatch(displayWarning(message))
  }

  this.props.dispatch(hideWarning())

  this.props.dispatch(addToAddressBook(recipient, nickname))

  var txParams = {
    from: this.state.newTx.from,
    to: this.state.newTx.to,

    value: this.state.newTx.amount.toString(16),

    // New: gas will now be specified on this step
    gas: this.state.newTx.gas,
    gasPrice: this.state.newTx.gasPrice,
  }

  if (recipient) txParams.to = addHexPrefix(recipient)
  if (txData) txParams.data = txData

  this.props.dispatch(signTx(txParams))
}