import { h, Component } from 'preact'

import { audioPlayFile } from '../../../actions'

import client from '../../../client.js'

import FileUploadButton from './FileUploadButton.jsx'
import FileLink from '../../../containers/fileLink.js'
import TaskContentLink from '../../../containers/taskContentLink.js'
import TaskStyleLink from '../../../containers/taskStyleLink.js'

export default class Files extends Component {
  constructor(props) {
    super()
    this.state = {
      files: props.folder.files || [],
      selected: null,
    }
    this.addFiles = this.addFiles.bind(this)
    if (! props.folder.files) {
      client.file.index({ folder_id: props.folder.id }).then( files => this.setState({ files }) )
    }
  }
  addFiles(newFiles) {
    if (! newFiles) return
    const files = this.state.files.concat(newFiles).sort( (a,b) => { return b.id - a.id } )
    this.setState({ files })
  }
  handleClick(file) {
    if (file.type === 'audio') {
      audioPlayFile(file)
      document.body.style.backgroundImage = 'url(' + pngpath(file) + ')'
    }
    this.setState({ selected: file })
  }
  render() {
    const files = (this.state.files).map(toFilenamePair).sort(sortByFilename).map(fromPair).map( (file, i) => {
      if (! file) return
      return (
        <div key={i} class={this.state.selected === file ? 'selected' : ''}>
          <span class='name'><FileLink file={file}>{file.name}</FileLink></span>
          <span class='mime'>{file.mime}</span>
          <span class='duration'>{file.duration.toFixed(1) + 's'}</span>
          <span class='actions'>
            <TaskContentLink file={file}>content</TaskContentLink>
            <TaskStyleLink file={file}>style</TaskStyleLink>
          </span>
        </div>
      )
    })
    return (
      <div class='window'>
        <div class='heading'>
          <b>{this.props.folder.name}</b>
          <div class='buttons'>
            <FileUploadButton folder={this.props.folder} addFiles={this.addFiles} />
            <button onClick={this.props.onClose}>&times;</button>
          </div>
        </div>
        <div class='list'>
          {files}
        </div>
      </div>
    )
  }
}

function toFilenamePair (file) { return [file.name.toLowerCase(), file] }
function sortByFilename (a,b) { return a[0] < b[0] ? -1 : a[0] == b[0] ? 0 : 1 }
function fromPair (pair) { return pair[1] }

function filepath (file) {
  return '/data/' + file.folder_id + '/' + encodeURIComponent(file.name)
}
function mp3path (file) {
  if (file.mime !== 'audio/mp3') {
    return filepath(file) + '.mp3'
  }
  return filepath(file)
}
function pngpath (file) {
  return filepath(file) + '.png'
}