module.exports = TorrentList

var h = require('virtual-dom/h')
var hyperx = require('hyperx')
var hx = hyperx(h)

var prettyBytes = require('pretty-bytes')

function TorrentList (state, dispatch) {
  var list = state.client.torrents.map((torrent) => renderTorrent(torrent, dispatch))
  if (list.length === 0) list = emptyList()
  return hx`<div class='torrent-list'>${list}</div>`
}

function emptyList () {
  return hx`
    <div class="get-started">
      <p>No torrents here yet.</p>
      <p>Drop a file or paste an address to get started!</p>
    </div>
  `
}

// Renders a torrent in the torrent list
// Includes name, download status, play button, background image
// May be expanded for additional info, including the list of files inside
function renderTorrent (torrent, dispatch) {
  // Background image: show some nice visuals, like a frame from the movie, if possible
  var style = {}
  if (torrent.posterURL) {
    style['background-image'] = `linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 100%), url("${torrent.posterURL}")`
  }

  // Foreground: name of the torrent, basic info like size, play button,
  // cast buttons if available, and delete
  return hx`
    <div class='torrent' style=${style}>
      ${renderTorrentMetadata(torrent)}
      ${renderTorrentButtons(torrent)}
    </div>
  `

  function renderTorrentMetadata () {
    var progress = Math.floor(100 * torrent.progress)
    var downloaded = prettyBytes(torrent.downloaded)
    var total = prettyBytes(torrent.length || 0)

    if (downloaded !== total) downloaded += ` / ${total}`

    return hx`
      <div class='metadata'>
        <div class='name ellipsis'>${torrent.name || 'Loading torrent...'}</div>
        <div class='status ellipsis'>
          ${getFilesLength()}
          <span>${getPeers()}</span>
          <span>↓ ${prettyBytes(torrent.downloadSpeed || 0)}/s</span>
          <span>↑ ${prettyBytes(torrent.uploadSpeed || 0)}/s</span>
        </div>
        <div class='status2 ellipsis'>
          <span class='progress'>${progress}%</span>
          <span>${downloaded}</span>
        </div>
      </div>
    `

    function getPeers () {
      var count = torrent.numPeers === 1 ? 'peer' : 'peers'
      return `${torrent.numPeers} ${count}`
    }

    function getFilesLength () {
      if (torrent.ready && torrent.files.length > 1) {
        return hx`<span class='files'>${torrent.files.length} files</span>`
      }
    }
  }

  function renderTorrentButtons () {
    return hx`
      <div class="buttons">
        <i.btn.icon.download
          class='${torrent.state}'
          onclick=${() => dispatch('toggleTorrent', torrent)}>
          file_download
        </i>
        <i.btn.icon.play
          class='${!torrent.ready ? 'disabled' : ''}'
          onclick=${() => dispatch('openPlayer', torrent)}>
          play_arrow
        </i>
        <i
          class='icon delete'
          onclick=${() => dispatch('deleteTorrent', torrent)}>
          close
        </i>
      </div>
    `
  }
}
