import { h, Component } from 'preact'
import { connect } from 'react-redux'
import { bindActionCreators } from 'redux'

import util from '../util'

class DashboardHeader extends Component {
  constructor(props){
    super(props)
    this.handleClick = this.handleClick.bind(this)
  }
  handleClick(e){
    this.props.onClick && this.props.onClick()
  }
  render() {
    const { site } = this.props
    return (
	    <div class='dashboardHeader heading'>
	      <h1>{site.name} cortex</h1>
        {this.renderGPUStatus()}
	    </div>
    )
  }
  renderGPUStatus(){
    const { runner } = this.props
    const gpu = runner.cpu
    if (gpu.status === 'IDLE') {
      return null
    }
    const task = gpu.task
    const eta = task.epoch
                ? ((task.epochs - (task.epoch || 0)) * 1000 / 60) + " minutes"
                : null
    let activityPhrase, liveMessage
    if (task.activity === 'live') {
      return (
        <div>
          Currently running {task.module} live on "{task.dataset}"
        </div>
      )
    }
    else {
      return (
        <div>
          Currently {util.gerund(task.activity)} {task.module} on {task.dataset}<br/>
          {eta && <span>Epoch: {task.epoch} / {task.epochs}, ETA {eta}<br/></span>}
          <br />
          Want to play live? <button>Pause at the end of this epoch</button>
        </div>
      )
    }
  }
}

const mapStateToProps = state => ({
  runner: state.system.runner,
	site: state.system.site,
})

const mapDispatchToProps = (dispatch, ownProps) => ({
})

export default connect(mapStateToProps, mapDispatchToProps)(DashboardHeader)