// @flow
import { SIMPLE_SITE } from 'config';
import * as CS from 'constants/claim_search';
import * as ICONS from 'constants/icons';
import React, { Fragment } from 'react';
import GeoRestrictionInfo from 'component/geoRestictionInfo';
import HiddenNsfwClaims from 'component/hiddenNsfwClaims';
import { useHistory } from 'react-router-dom';
import Button from 'component/button';
import ClaimListDiscover from 'component/claimListDiscover';
import Ads from 'web/component/ads';
import Icon from 'component/common/icon';
import LivestreamLink from 'component/livestreamLink';
import { Form, FormField } from 'component/common/form';
import ScheduledStreams from 'component/scheduledStreams';
import { ClaimSearchFilterContext } from 'contexts/claimSearchFilterContext';
import { SearchResults } from './internal/searchResults';
import useFetchLiveStatus from 'effects/use-fetch-live';
import { useIsLargeScreen } from 'effects/use-screensize';
import usePersistedState from 'effects/use-persisted-state';

const TYPES_TO_ALLOW_FILTER = ['stream', 'repost'];

type Props = {
  uri: string,
  totalPages: number,
  fetching: boolean,
  params: { page: number },
  pageOfClaimsInChannel: Array<StreamClaim>,
  channelIsBlocked: boolean,
  channelIsMine: boolean,
  fetchClaims: (string, number) => void,
  channelIsBlackListed: boolean,
  defaultPageSize?: number,
  defaultInfiniteScroll?: Boolean,
  claim: Claim,
  isAuthenticated: boolean,
  showMature: boolean,
  tileLayout: boolean,
  viewHiddenChannels: boolean,
  doResolveUris: (Array<string>, boolean) => void,
  claimType: string,
  empty?: string,
  doFetchChannelLiveStatus: (string) => void,
  activeLivestreamForChannel: any,
  activeLivestreamInitialized: boolean,
  hasPremiumPlus: boolean,
};

function ChannelContent(props: Props) {
  const {
    uri,
    fetching,
    channelIsMine,
    channelIsBlocked,
    channelIsBlackListed,
    claim,
    defaultPageSize = CS.PAGE_SIZE,
    defaultInfiniteScroll = true,
    showMature,
    tileLayout,
    viewHiddenChannels,
    doResolveUris,
    claimType,
    empty,
    doFetchChannelLiveStatus,
    activeLivestreamForChannel,
    activeLivestreamInitialized,
    hasPremiumPlus,
  } = props;
  // const claimsInChannel = (claim && claim.meta.claims_in_channel) || 0;

  const claimsInChannel = 9999;
  const [searchQuery, setSearchQuery] = React.useState('');
  const [isSearching, setIsSearching] = React.useState(false);
  const {
    location: { pathname, search },
  } = useHistory();

  // In Channel Page, ignore SETTINGS.HIDE_REPOSTS and show reposts by default:
  const [hideReposts, setHideReposts] = usePersistedState('hideRepostsChannelPage');

  const claimSearchFilterCtx = {
    contentTypes: CS.CONTENT_TYPES,
    repost: { hideReposts, setHideReposts },
  };

  const url = `${pathname}${search}`;
  const claimId = claim && claim.claim_id;
  const isChannelEmpty = !claim || !claim.meta;
  const showFilters =
    !claimType ||
    (Array.isArray(claimType)
      ? claimType.every((ct) => TYPES_TO_ALLOW_FILTER.includes(ct))
      : TYPES_TO_ALLOW_FILTER.includes(claimType));
  const isLargeScreen = useIsLargeScreen();
  const dynamicPageSize = isLargeScreen ? Math.ceil(defaultPageSize * 3) : defaultPageSize;

  const isInitialized = Boolean(activeLivestreamForChannel) || activeLivestreamInitialized;
  const isChannelBroadcasting = Boolean(activeLivestreamForChannel);
  const showScheduledLiveStreams = claimType !== 'collection'; // ie. not on the playlist page.

  function handleInputChange(e) {
    const { value } = e.target;
    setSearchQuery(value);
  }

  React.useEffect(() => {
    setSearchQuery('');
  }, [url]);

  useFetchLiveStatus(claimId, doFetchChannelLiveStatus, true);

  return (
    <Fragment>
      <GeoRestrictionInfo uri={uri} />

      {!fetching && Boolean(claimsInChannel) && !channelIsBlocked && !channelIsBlackListed && (
        <HiddenNsfwClaims uri={uri} />
      )}

      {!fetching && isInitialized && isChannelBroadcasting && !isChannelEmpty && (
        <LivestreamLink claimUri={activeLivestreamForChannel.claimUri} />
      )}

      {!fetching && showScheduledLiveStreams && (
        <ScheduledStreams
          channelIds={[claimId]}
          tileLayout={tileLayout}
          liveUris={
            isChannelBroadcasting && activeLivestreamForChannel.claimUri ? [activeLivestreamForChannel.claimUri] : []
          }
          showHideSetting={false}
        />
      )}

      {!fetching && channelIsBlackListed && (
        <section className="card card--section">
          <p>
            {__(
              'In response to a complaint we received under the US Digital Millennium Copyright Act, we have blocked access to this channel from our applications. Content may also be blocked due to DMCA Red Flag rules which are obvious copyright violations we come across, are discussed in public channels, or reported to us.'
            )}
          </p>
          <div className="section__actions">
            <Button button="link" href="https://odysee.com/@OdyseeHelp:b/copyright:f" label={__('Read More')} />
          </div>
        </section>
      )}

      {!fetching && channelIsBlocked && (
        <div className="card--section">
          <h2 className="help">{__('You have blocked this channel content.')}</h2>
        </div>
      )}

      {!channelIsMine && claimsInChannel > 0 && <HiddenNsfwClaims uri={uri} />}

      {!fetching && (
        <ClaimSearchFilterContext.Provider value={claimSearchFilterCtx}>
          <ClaimListDiscover
            ignoreSearchInLanguage
            hasSource
            defaultFreshness={CS.FRESH_ALL}
            showHiddenByUser={viewHiddenChannels}
            hideRepostsOverride={hideReposts}
            fetchViewCount
            hideFilters={!showFilters}
            hideAdvancedFilter={!showFilters}
            tileLayout={tileLayout}
            uris={isSearching ? [] : null}
            streamType={SIMPLE_SITE ? CS.CONTENT_ALL : undefined}
            channelIds={[claimId]}
            claimType={claimType}
            feeAmount={CS.FEE_AMOUNT_ANY}
            defaultOrderBy={CS.ORDER_BY_NEW}
            pageSize={dynamicPageSize}
            infiniteScroll={defaultInfiniteScroll}
            injectedItem={
              !hasPremiumPlus && {
                node: (index, lastVisibleIndex, pageSize) => {
                  if (pageSize && index < pageSize) {
                    return index === lastVisibleIndex ? <Ads type="video" tileLayout={tileLayout} small /> : null;
                  } else {
                    return index % (pageSize * 2) === 0 ? <Ads type="video" tileLayout={tileLayout} small /> : null;
                  }
                },
              }
            }
            meta={
              showFilters && (
                <Form onSubmit={() => {}} className="wunderbar--inline">
                  <Icon icon={ICONS.SEARCH} />
                  <FormField
                    name="channel_search"
                    className="wunderbar__input--inline"
                    value={searchQuery}
                    onChange={handleInputChange}
                    type="text"
                    placeholder={__('Search')}
                  />
                </Form>
              )
            }
            subSection={
              <SearchResults
                searchQuery={searchQuery}
                claimId={claimId}
                showMature={showMature}
                tileLayout={tileLayout}
                onResults={(results) => setIsSearching(results !== null)}
                doResolveUris={doResolveUris}
              />
            }
            isChannel
            channelIsMine={channelIsMine}
            empty={isSearching ? ' ' : empty}
          />
        </ClaimSearchFilterContext.Provider>
      )}
    </Fragment>
  );
}

export default ChannelContent;