// @flow
import * as ICONS from 'constants/icons';
import * as PAGES from 'constants/pages';
import { SITE_NAME, SIMPLE_SITE, DOMAIN } from 'config';
import React from 'react';
import Page from 'component/page';
import Button from 'component/button';
import ClaimTilesDiscover from 'component/claimTilesDiscover';
import ClaimPreviewTile from 'component/claimPreviewTile';
import Icon from 'component/common/icon';
import I18nMessage from 'component/i18nMessage';
import LbcSymbol from 'component/common/lbc-symbol';
import WaitUntilOnPage from 'component/common/wait-until-on-page';
import useGetLivestreams from 'effects/use-get-livestreams';

// @if TARGET='web'
import Pixel from 'web/component/pixel';
// @endif

type Props = {
  authenticated: boolean,
  followedTags: Array<Tag>,
  subscribedChannels: Array<Subscription>,
  showNsfw: boolean,
  homepageData: any,
};

function HomePage(props: Props) {
  const { followedTags, subscribedChannels, authenticated, showNsfw, homepageData } = props;
  const showPersonalizedChannels = (authenticated || !IS_WEB) && subscribedChannels && subscribedChannels.length > 0;
  const showPersonalizedTags = (authenticated || !IS_WEB) && followedTags && followedTags.length > 0;
  const showIndividualTags = showPersonalizedTags && followedTags.length < 5;
  const { default: getHomepage } = homepageData;
  const { livestreamMap } = useGetLivestreams();

  const rowData: Array<RowDataItem> = getHomepage(
    authenticated,
    showPersonalizedChannels,
    showPersonalizedTags,
    subscribedChannels,
    followedTags,
    showIndividualTags,
    showNsfw
  );

  function getRowElements(title, route, link, icon, help, options, index) {
    const tilePlaceholder = (
      <ul className="claim-grid">
        {new Array(options.pageSize || 8).fill(1).map((x, i) => (
          <ClaimPreviewTile key={i} placeholder />
        ))}
      </ul>
    );
    const claimTiles = <ClaimTilesDiscover {...options} liveLivestreamsFirst livestreamMap={livestreamMap} hasSource />;

    return (
      <div key={title} className="claim-grid__wrapper">
        {index !== 0 && title && typeof title === 'string' && (
          <h1 className="claim-grid__header">
            <Button navigate={route || link} button="link">
              {icon && <Icon className="claim-grid__header-icon" sectionIcon icon={icon} size={20} />}
              <span className="claim-grid__title">{__(title)}</span>
              {help}
            </Button>
          </h1>
        )}

        {index === 0 && <>{claimTiles}</>}
        {index !== 0 && (
          <WaitUntilOnPage name={title} placeholder={tilePlaceholder} yOffset={800}>
            {claimTiles}
          </WaitUntilOnPage>
        )}

        {(route || link) && (
          <Button
            className="claim-grid__title--secondary"
            button="link"
            navigate={route || link}
            iconRight={ICONS.ARROW_RIGHT}
            label={__('View More')}
          />
        )}
      </div>
    );
  }

  return (
    <Page fullWidthPage>
      {IS_WEB && DOMAIN === 'lbry.tv' && (
        <div className="notice-message--loud">
          <h1 className="section__title">
            <I18nMessage
              tokens={{
                odysee: <Button label={__('odysee.com')} button="link" href="https://odysee.com?src=lbrytv-retired" />,
              }}
            >
              lbry.tv is being retired in favor of %odysee%
            </I18nMessage>
          </h1>
          <p className="section__subtitle">
            <I18nMessage
              tokens={{
                desktop_app: (
                  <Button label={__('desktop app')} button="link" href="https://lbry.com/get?src=lbrytv-retired" />
                ),
                odysee: <Button label={__('odysee.com')} button="link" href="https://odysee.com?src=lbrytv-retired" />,
                credits: <LbcSymbol />,
              }}
            >
              You will have to switch to the %desktop_app% or %odysee% in the near future. Your existing login details
              will work on %odysee% and all of your %credits% and other settings will be there.
            </I18nMessage>
          </p>
        </div>
      )}

      {!SIMPLE_SITE && (authenticated || !IS_WEB) && !subscribedChannels.length && (
        <div className="notice-message">
          <h1 className="section__title">
            {__("%SITE_NAME% is more fun if you're following channels", { SITE_NAME })}
          </h1>
          <p className="section__actions">
            <Button
              button="primary"
              navigate={`/$/${PAGES.CHANNELS_FOLLOWING_DISCOVER}`}
              label={__('Find new channels to follow')}
            />
          </p>
        </div>
      )}
      {rowData.map(({ title, route, link, icon, help, options = {} }, index) => {
        return getRowElements(title, route, link, icon, help, options, index);
      })}
      {/* @if TARGET='web' */}
      <Pixel type={'retargeting'} />
      {/* @endif */}
    </Page>
  );
}

export default HomePage;