import React, { Component } from 'react'
import { connect } from 'react-redux'
import PropTypes from 'prop-types'
import classnames from 'classnames'
import { requestRevealSeedWords } from '../../store/actions'
import ExportTextContainer from '../../components/ui/export-text-container'
import { getMostRecentOverviewPage } from '../../ducks/history/history'

import Button from '../../components/ui/button'

const PASSWORD_PROMPT_SCREEN = 'PASSWORD_PROMPT_SCREEN'
const REVEAL_SEED_SCREEN = 'REVEAL_SEED_SCREEN'

class RevealSeedPage extends Component {
  state = {
    screen: PASSWORD_PROMPT_SCREEN,
    password: '',
    seedWords: null,
    error: null,
  }

  componentDidMount() {
    const passwordBox = document.getElementById('password-box')
    if (passwordBox) {
      passwordBox.focus()
    }
  }

  handleSubmit(event) {
    event.preventDefault()
    this.setState({ seedWords: null, error: null })
    this.props
      .requestRevealSeedWords(this.state.password)
      .then((seedWords) =>
        this.setState({ seedWords, screen: REVEAL_SEED_SCREEN }),
      )
      .catch((error) => this.setState({ error: error.message }))
  }

  renderWarning() {
    return (
      <div className="page-container__warning-container">
        <img
          className="page-container__warning-icon"
          src="images/warning.svg"
          alt=""
        />
        <div className="page-container__warning-message">
          <div className="page-container__warning-title">
            {this.context.t('revealSeedWordsWarningTitle')}
          </div>
          <div>{this.context.t('revealSeedWordsWarning')}</div>
        </div>
      </div>
    )
  }

  renderContent() {
    return this.state.screen === PASSWORD_PROMPT_SCREEN
      ? this.renderPasswordPromptContent()
      : this.renderRevealSeedContent()
  }

  renderPasswordPromptContent() {
    const { t } = this.context

    return (
      <form onSubmit={(event) => this.handleSubmit(event)}>
        <label className="input-label" htmlFor="password-box">
          {t('enterPasswordContinue')}
        </label>
        <div className="input-group">
          <input
            type="password"
            placeholder={t('password')}
            id="password-box"
            value={this.state.password}
            onChange={(event) =>
              this.setState({ password: event.target.value })
            }
            className={classnames('form-control', {
              'form-control--error': this.state.error,
            })}
          />
        </div>
        {this.state.error && (
          <div className="reveal-seed__error">{this.state.error}</div>
        )}
      </form>
    )
  }

  renderRevealSeedContent() {
    const { t } = this.context

    return (
      <div>
        <label className="reveal-seed__label">
          {t('yourPrivateSeedPhrase')}
        </label>
        <ExportTextContainer text={this.state.seedWords} />
      </div>
    )
  }

  renderFooter() {
    return this.state.screen === PASSWORD_PROMPT_SCREEN
      ? this.renderPasswordPromptFooter()
      : this.renderRevealSeedFooter()
  }

  renderPasswordPromptFooter() {
    return (
      <div className="page-container__footer">
        <footer>
          <Button
            type="default"
            large
            className="page-container__footer-button"
            onClick={() =>
              this.props.history.push(this.props.mostRecentOverviewPage)
            }
          >
            {this.context.t('cancel')}
          </Button>
          <Button
            type="secondary"
            large
            className="page-container__footer-button"
            onClick={(event) => this.handleSubmit(event)}
            disabled={this.state.password === ''}
          >
            {this.context.t('next')}
          </Button>
        </footer>
      </div>
    )
  }

  renderRevealSeedFooter() {
    return (
      <div className="page-container__footer">
        <Button
          type="default"
          large
          className="page-container__footer-button"
          onClick={() =>
            this.props.history.push(this.props.mostRecentOverviewPage)
          }
        >
          {this.context.t('close')}
        </Button>
      </div>
    )
  }

  render() {
    return (
      <div className="page-container">
        <div className="page-container__header">
          <div className="page-container__title">
            {this.context.t('revealSeedWordsTitle')}
          </div>
          <div className="page-container__subtitle">
            {this.context.t('revealSeedWordsDescription')}
          </div>
        </div>
        <div className="page-container__content">
          {this.renderWarning()}
          <div className="reveal-seed__content">{this.renderContent()}</div>
        </div>
        {this.renderFooter()}
      </div>
    )
  }
}

RevealSeedPage.propTypes = {
  requestRevealSeedWords: PropTypes.func,
  history: PropTypes.object,
  mostRecentOverviewPage: PropTypes.string.isRequired,
}

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

const mapStateToProps = (state) => {
  return {
    mostRecentOverviewPage: getMostRecentOverviewPage(state),
  }
}

const mapDispatchToProps = (dispatch) => {
  return {
    requestRevealSeedWords: (password) =>
      dispatch(requestRevealSeedWords(password)),
  }
}

export default connect(mapStateToProps, mapDispatchToProps)(RevealSeedPage)