import { Key, useContext, useState } from 'react';
import { ButtonGroup, Button, Flexbox } from 'react-basics';
import thenby from 'thenby';
import { percentFilter } from 'lib/filters';
import ListTable from 'components/metrics/ListTable';
import { FILTER_PAGES, FILTER_REFERRERS } from 'lib/constants';
import { useMessages } from 'components/hooks';
import { RealtimeData } from 'lib/types';
import { WebsiteContext } from '../WebsiteProvider';

export function RealtimeUrls({ data }: { data: RealtimeData }) {
  const website = useContext(WebsiteContext);
  const { formatMessage, labels } = useMessages();
  const { referrers, urls } = data || {};
  const [filter, setFilter] = useState<Key>(FILTER_REFERRERS);
  const limit = 15;

  const buttons = [
    {
      label: formatMessage(labels.referrers),
      key: FILTER_REFERRERS,
    },
    {
      label: formatMessage(labels.pages),
      key: FILTER_PAGES,
    },
  ];

  const renderLink = ({ x }) => {
    const domain = x.startsWith('/') ? website?.domain : '';
    return (
      <a href={`//${domain}${x}`} target="_blank" rel="noreferrer noopener">
        {x}
      </a>
    );
  };

  const domains = percentFilter(
    Object.keys(referrers)
      .map(key => {
        return {
          x: key,
          y: referrers[key],
        };
      })
      .sort(thenby.firstBy('y', -1))
      .slice(0, limit),
  );

  const pages = percentFilter(
    Object.keys(urls)
      .map(key => {
        return {
          x: key,
          y: urls[key],
        };
      })
      .sort(thenby.firstBy('y', -1))
      .slice(0, limit),
  );

  return (
    <>
      <Flexbox justifyContent="center">
        <ButtonGroup items={buttons} selectedKey={filter} onSelect={setFilter}>
          {({ key, label }) => <Button key={key}>{label}</Button>}
        </ButtonGroup>
      </Flexbox>
      {filter === FILTER_REFERRERS && (
        <ListTable
          title={formatMessage(labels.referrers)}
          metric={formatMessage(labels.views)}
          renderLabel={renderLink}
          data={domains}
        />
      )}
      {filter === FILTER_PAGES && (
        <ListTable
          title={formatMessage(labels.pages)}
          metric={formatMessage(labels.views)}
          renderLabel={renderLink}
          data={pages}
        />
      )}
    </>
  );
}

export default RealtimeUrls;
