import React from "react"

import { DropdownButton, MenuItem } from "react-bootstrap"

export default class TorrentsButton extends React.PureComponent {
  constructor(props) {
    super(props);
    this.handleClick = this.handleClick.bind(this);
  }
  handleClick(e, url) {
    e.preventDefault();
    this.props.addTorrent(url);
  }
  render() {
    const entries = buildMenuItems(this.props.torrents);
    const searchUrl = `#/torrents/search/movies/${encodeURI(this.props.movieTitle)}`;
    return (
      <DropdownButton className="btn btn-default btn-sm" title="Torrents" id="download-torrents-button" dropup>
        <MenuItem className="text-warning" header>Advanced</MenuItem>
        <MenuItem href={searchUrl} >
          <i className="fa fa-search" aria-hidden="true"></i> Search
        </MenuItem>
        {entries.length > 0 &&
            <MenuItem divider></MenuItem>
        }
        {entries.map(function(e, index) {
          switch (e.type) {
            case "header":
              return (
                <MenuItem key={index} className="text-warning" header>
                  {e.value}
                </MenuItem>
              );
            case "divider":
              return (
                <MenuItem key={index} divider></MenuItem>
              );
            case "entry":
              return (
                <MenuItem key={index} href={e.url} onClick={(event) => this.handleClick(event, e.url)}>
                  {e.quality}
                </MenuItem>
              );
          }
        }, this)}
      </DropdownButton>
    );
  }
}

function buildMenuItems(torrents) {
  if (!torrents) {
    return [];
  }

  const t = torrents.groupBy((el) => el.get("source"));

  // Build the array of entries
  let entries = [];
  let dividerCount = t.size - 1;
  for (let [source, torrentList] of t.entrySeq()) {
    // Push the title
    entries.push({
      type: "header",
      value: source,
    });

    // Push the torrents
    for (let torrent of torrentList) {
      entries.push({
        type: "entry",
        quality: torrent.get("quality"),
        url: torrent.get("url"),
      });
    }

    // Push the divider
    if (dividerCount > 0) {
      dividerCount--;
      entries.push({ type: "divider" });
    }
  }

  return entries;
}