import { h, Component } from 'preact'
import { bindActionCreators } from 'redux'
import { Link } from 'react-router-dom';
import { connect } from 'react-redux'

import * as util from '../../util'
import * as samplernnActions from './samplernn.actions'

import { FileList, FileRow } from '../../common/fileList.component'

class SampleRNNResults extends Component {
  constructor(props){
    super()
    this.fileOptions = this.fileOptions.bind(this)
    this.pickFile = this.pickFile.bind(this)
    let id = props.match.params.id || localStorage.getItem('samplernn.last_id')
    if (!props.samplernn.data) props.actions.load_directories()
  }
  pickFile(file){
    console.log('pick', file)
  }
  fileOptions(file){
    if (file.activity === 'url' && !file.dataset) {
      if (this.props.runner.cpu.status !== 'IDLE') {
        return (
          <div className='gray'>
            fetching...
          </div>
        )
      } else {
        return (
          <div className='link' onClick={() => this.fetchURL(file.url)}>
            fetch
          </div>
        )
      }
    }
    return (
      <div>
        <div className='link' onClick={() => this.train(file)}>train</div>
        {file.epoch == 0 && <div className='epochs'>{file.epochs} ep.</div>}
      </div>
    )
  }
  render(){
    if (this.props.samplernn.loading) return <span>Loading</span>
    const { folderLookup } = this.props.samplernn.data
    // const { folderLookup } = samplernn

    const renders = Object.keys(folderLookup).sort(util.sort.stringSort.asc).map(key => {
      const folder = folderLookup[key]
      let { mapFn, sortFn } = util.sort.orderByFn('epoch desc')
      const datasetPairs = folder.datasets.map(mapFn).sort(sortFn)
      const bestRenders = datasetPairs
        .map(pair => pair[1])
        .filter(dataset => dataset.output.length)
        .map(dataset => {
          const { output } = dataset
          return output.map(mapFn).sort(sortFn)[0][1]
        })
      // console.log(bestRenders.map(r => r.epoch))
      const path = folder.name === 'unsorted'
        ? "/samplernn/import/"
        : "/samplernn/datasets/" + folder.id + "/"
      return (
        <div className='col'>
          <h3><Link to={path}>{folder.name}</Link></h3>
          <FileList
            files={bestRenders}
            orderBy='date desc'
            fields={'name date epoch size'}
          />
        </div>
      )
    })

    return (
      <div className='app'>
        <div className='heading'>
          <h2>SampleRNN</h2>
        </div>
        <div class='rows params renders'>
          <Link to='/samplernn/new/'>new dataset</Link>
          <br/><br/>
          {renders}
        </div>
      </div>
    )
  }
}

const mapStateToProps = state => ({
  samplernn: state.module.samplernn,
  runner: state.system.runner,
  task: state.task,
})

const mapDispatchToProps = (dispatch, ownProps) => ({
  actions: bindActionCreators(samplernnActions, dispatch),
})

export default connect(mapStateToProps, mapDispatchToProps)(SampleRNNResults)