import React from 'react'
import { connect } from 'react-redux'
import { bindActionCreators } from 'redux'
import * as actions from '../../actions'
import * as selectors from '../../selectors'

import { Tabs, TabPanel } from 'react-tabs'
import Search from './Search'
import TagListPanel from './TagListPanel'
import CategoriesListPanel from './CategoriesListPanel'
import BottomActions from './BottomActions'
import copy from '../../common/data/copy.json'
import { trimAndEllipse } from '../../common/utilities.js'

class Toolbar extends React.Component {
  constructor (props) {
    super(props)
    this.state = { _selected: -1 }
  }

  selectTab (selected) {
    const _selected = (this.state._selected === selected) ? -1 : selected
    this.setState({ _selected })
  }

  renderClosePanel () {
    return (
      <div className='panel-header' onClick={() => this.selectTab(-1)}>
        <div className='caret' />
      </div>
    )
  }

  renderSearch () {
    if (process.env.features.USE_SEARCH) {
      return (
        <TabPanel>
          <Search
            language={this.props.language}
            tags={this.props.tags}
            categories={this.props.categories}
            tagFilters={this.props.tagFilters}
            categoryFilters={this.props.categoryFilters}
            filter={this.props.filter}
          />
        </TabPanel>
      )
    }
  }

  goToNarrative (narrative) {
    this.selectTab(-1) // set all unselected within this component
    this.props.methods.onSelectNarrative(narrative)
  }

  renderToolbarNarrativePanel () {
    return (
      <TabPanel>
        <h2>{copy[this.props.language].toolbar.narrative_panel_title}</h2>
        <p>{copy[this.props.language].toolbar.narrative_summary}</p>
        {this.props.narratives.map((narr) => {
          return (
            <div className='panel-action action'>
              <button onClick={() => { this.goToNarrative(narr) }}>
                <p>{narr.label}</p>
                <p><small>{trimAndEllipse(narr.description, 120)}</small></p>
              </button>
            </div>
          )
        })}
      </TabPanel>
    )
  }

  renderToolbarCategoriesPanel () {
    if (process.env.features.CATEGORIES_AS_TAGS) {
      return (
        <TabPanel>
          <CategoriesListPanel
            categories={this.props.categories}
            activeCategories={this.props.activeCategories}
            onCategoryFilter={this.props.methods.onCategoryFilter}
            language={this.props.language}
          />
        </TabPanel>
      )
    }
  }

  renderToolbarTagPanel () {
    if (process.env.features.USE_TAGS &&
      this.props.tags.children) {
      return (
        <TabPanel>
          <TagListPanel
            tags={this.props.tags}
            activeTags={this.props.activeTags}
            onTagFilter={this.props.methods.onTagFilter}
            language={this.props.language}
          />
        </TabPanel>
      )
    }
    return null
  }

  renderToolbarTab (_selected, label, iconKey) {
    const isActive = (this.state._selected === _selected)
    let classes = (isActive) ? 'toolbar-tab active' : 'toolbar-tab'

    return (
      <div className={classes} onClick={() => { this.selectTab(_selected) }}>
        <i className='material-icons'>{iconKey}</i>
        <div className='tab-caption'>{label}</div>
      </div>
    )
  }

  renderToolbarPanels () {
    let classes = (this.state._selected >= 0) ? 'toolbar-panels' : 'toolbar-panels folded'
    return (
      <div className={classes}>
        {this.renderClosePanel()}
        <Tabs selectedIndex={this.state._selected}>
          {this.renderToolbarNarrativePanel()}
          {this.renderToolbarCategoriesPanel()}
          {this.renderToolbarTagPanel()}
        </Tabs>
      </div>
    )
  }

  renderToolbarNavs () {
    if (this.props.narratives) {
      return this.props.narratives.map((nar, idx) => {
        const isActive = (idx === this.state._selected)

        let classes = (isActive) ? 'toolbar-tab active' : 'toolbar-tab'

        return (
          <div className={classes} onClick={() => { this.selectTab(idx) }}>
            <div className='tab-caption'>{nar.label}</div>
          </div>
        )
      })
    }
    return null
  }

  renderToolbarTabs () {
    let title = copy[this.props.language].toolbar.title
    if (process.env.display_title) title = process.env.display_title
    const narrativesLabel = copy[this.props.language].toolbar.narratives_label
    const tagsLabel = copy[this.props.language].toolbar.tags_label
    const categoriesLabel = 'Categories' // TODO:
    const isTags = this.props.tags && this.props.tags.children
    const isCategories = true

    return (
      <div className='toolbar'>
        <div className='toolbar-header'onClick={this.props.methods.onTitle}><p>{title}</p></div>
        <div className='toolbar-tabs'>
          {this.renderToolbarTab(0, narrativesLabel, 'timeline')}
          {(isCategories) ? this.renderToolbarTab(1, categoriesLabel, 'widgets') : null}
          {(isTags) ? this.renderToolbarTab(2, tagsLabel, 'filter_list') : null}
        </div>
        <BottomActions
          info={{
            enabled: this.props.infoShowing,
            toggle: this.props.actions.toggleInfoPopup
          }}
          sites={{
            enabled: this.props.sitesShowing,
            toggle: this.props.actions.toggleSites
          }}
          cover={{
            toggle: this.props.actions.toggleCover
          }}
        />
      </div>
    )
  }

  render () {
    const { isNarrative } = this.props

    return (
      <div id='toolbar-wrapper' className={`toolbar-wrapper ${(isNarrative) ? 'narrative-mode' : ''}`}>
        {this.renderToolbarTabs()}
        {this.renderToolbarPanels()}
      </div>
    )
  }
}

function mapStateToProps (state) {
  return {
    tags: selectors.getTagTree(state),
    categories: selectors.getCategories(state),
    narratives: selectors.selectNarratives(state),
    language: state.app.language,
    activeTags: selectors.getActiveTags(state),
    activeCategories: selectors.getActiveCategories(state),
    viewFilters: state.app.filters.views,
    features: state.app.features,
    narrative: state.app.narrative,
    sitesShowing: state.app.flags.isShowingSites,
    infoShowing: state.app.flags.isInfopopup
  }
}

function mapDispatchToProps (dispatch) {
  return {
    actions: bindActionCreators(actions, dispatch)
  }
}

export default connect(mapStateToProps, mapDispatchToProps)(Toolbar)