import React, { Component } from 'react'
import { connect } from 'react-redux'

import actions from 'app/actions'
import ParagraphForm from '../components/paragraph.form'
import ParagraphList from '../components/paragraph.list'
import { paragraphElementLookup } from '../components/paragraphTypes'

class ParagraphEditor extends Component {
  state = {
    selectedParagraph: null,
    selectedParagraphOffset: 0,
  }
  
  constructor(props) {
    super(props)
    this.handleAnnotationClick = this.handleAnnotationClick.bind(this)
    this.handleParagraphDoubleClick = this.handleParagraphDoubleClick.bind(this)
    this.handleCloseParagraphForm = this.handleCloseParagraphForm.bind(this)
    this.updateSelectedParagraph = this.updateSelectedParagraph.bind(this)
  }

  componentDidMount() {
    actions.transcript.buildAllParagraphs()
  }

  componentDidUpdate(prevProps) {
    if (this.props.paragraph !== prevProps.paragraph) {
      actions.transcript.buildAllParagraphs()
    }
  }
  
  handleAnnotationClick(e, paragraph, annotation){
    actions.audio.seek(annotation.start_ts)
  }

  handleParagraphDoubleClick(e, paragraph) {
    let paragraphNode = e.target
    if (!paragraphNode.classList.contains('paragraph')) {
      paragraphNode = paragraphNode.parentNode
    }
    this.setState({
      selectedParagraph: { ...paragraph },
      selectedParagraphOffset: paragraphNode.offsetTop
    })
  }

  updateSelectedParagraph(selectedParagraph) {
    this.setState({ selectedParagraph })
  }

  handleCloseParagraphForm() {
    this.setState({ selectedParagraph: null })
  }

  render() {
    const { paragraphs } = this.props
    const { selectedParagraph, selectedParagraphOffset } = this.state
    return (
      <div className='paragraphs'>
        <div className='content'>
          <ParagraphList
            paragraphs={paragraphs}
            paragraphElementLookup={paragraphElementLookup}
            selectedParagraph={selectedParagraph}
            onAnnotationClick={this.handleAnnotationClick}
            onParagraphDoubleClick={this.handleParagraphDoubleClick}
          />
          {selectedParagraph &&
            <ParagraphForm
              paragraph={selectedParagraph}
              onUpdate={this.updateSelectedParagraph}
              onClose={this.handleCloseParagraphForm}
              y={selectedParagraphOffset}
            />
          }
        </div>
      </div>
    )
  }
}

const mapStateToProps = state => ({
  paragraph: state.paragraph.index,
  paragraphs: state.paragraph.paragraphs,
})

export default connect(mapStateToProps)(ParagraphEditor)