384 lines
14 KiB
JavaScript
384 lines
14 KiB
JavaScript
// @flow
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import React from 'react';
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import classnames from 'classnames';
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import Spinner from 'component/spinner';
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import CommentCreate from 'component/commentCreate';
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import LivestreamComment from 'component/livestreamComment';
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import Button from 'component/button';
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import UriIndicator from 'component/uriIndicator';
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import CreditAmount from 'component/common/credit-amount';
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import ChannelThumbnail from 'component/channelThumbnail';
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import Tooltip from 'component/common/tooltip';
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import * as ICONS from 'constants/icons';
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import OptimizedImage from 'component/optimizedImage';
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import { parseSticker } from 'util/comments';
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type Props = {
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uri: string,
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claim: ?StreamClaim,
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embed?: boolean,
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doCommentList: (string, string, number, number) => void,
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comments: Array<Comment>,
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pinnedComments: Array<Comment>,
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fetchingComments: boolean,
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doSuperChatList: (string) => void,
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superChats: Array<Comment>,
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myChannelIds: ?Array<string>,
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doResolveUris: (Array<string>, boolean) => void,
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};
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const VIEW_MODES = {
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CHAT: 'chat',
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SUPERCHAT: 'sc',
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};
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const COMMENT_SCROLL_TIMEOUT = 25;
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const LARGE_SUPER_CHAT_LIST_THRESHOLD = 20;
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export default function LivestreamComments(props: Props) {
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const {
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claim,
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uri,
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embed,
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comments: commentsByChronologicalOrder,
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pinnedComments,
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doCommentList,
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fetchingComments,
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doSuperChatList,
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myChannelIds,
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superChats: superChatsByTipAmount,
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doResolveUris,
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} = props;
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let superChatsFiatAmount, superChatsLBCAmount, superChatsTotalAmount, hasSuperChats;
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const commentsRef = React.createRef();
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const [viewMode, setViewMode] = React.useState(VIEW_MODES.CHAT);
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const [scrollPos, setScrollPos] = React.useState(0);
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const [showPinned, setShowPinned] = React.useState(true);
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const [resolvingSuperChat, setResolvingSuperChat] = React.useState(false);
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const claimId = claim && claim.claim_id;
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const commentsLength = commentsByChronologicalOrder && commentsByChronologicalOrder.length;
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const commentsToDisplay = viewMode === VIEW_MODES.CHAT ? commentsByChronologicalOrder : superChatsByTipAmount;
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const stickerSuperChats =
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superChatsByTipAmount && superChatsByTipAmount.filter(({ comment }) => Boolean(parseSticker(comment)));
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const discussionElement = document.querySelector('.livestream__comments');
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const pinnedComment = pinnedComments.length > 0 ? pinnedComments[0] : null;
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const restoreScrollPos = React.useCallback(() => {
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if (discussionElement) {
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discussionElement.scrollTop = 0;
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}
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}, [discussionElement]);
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const superChatTopTen = React.useMemo(() => {
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return superChatsByTipAmount ? superChatsByTipAmount.slice(0, 10) : superChatsByTipAmount;
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}, [superChatsByTipAmount]);
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const showMoreSuperChatsButton =
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superChatTopTen && superChatsByTipAmount && superChatTopTen.length < superChatsByTipAmount.length;
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function resolveSuperChat() {
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if (superChatsByTipAmount && superChatsByTipAmount.length > 0) {
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doResolveUris(
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superChatsByTipAmount.map((comment) => comment.channel_url || '0'),
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true
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);
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if (superChatsByTipAmount.length > LARGE_SUPER_CHAT_LIST_THRESHOLD) {
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setResolvingSuperChat(true);
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}
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}
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}
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React.useEffect(() => {
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if (claimId) {
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doCommentList(uri, '', 1, 75);
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doSuperChatList(uri);
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}
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}, [claimId, uri, doCommentList, doSuperChatList]);
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// Register scroll handler (TODO: Should throttle/debounce)
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React.useEffect(() => {
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function handleScroll() {
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if (discussionElement && viewMode === VIEW_MODES.CHAT) {
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const scrollTop = discussionElement.scrollTop;
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if (scrollTop !== scrollPos) {
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setScrollPos(scrollTop);
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}
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}
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}
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if (discussionElement && viewMode === VIEW_MODES.CHAT) {
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discussionElement.addEventListener('scroll', handleScroll);
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return () => discussionElement.removeEventListener('scroll', handleScroll);
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}
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}, [discussionElement, scrollPos, viewMode]);
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// Retain scrollPos=0 when receiving new messages.
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React.useEffect(() => {
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if (discussionElement && commentsLength > 0) {
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// Only update comment scroll if the user hasn't scrolled up to view old comments
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if (scrollPos >= 0) {
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// +ve scrollPos: not scrolled (Usually, there'll be a few pixels beyond 0).
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// -ve scrollPos: user scrolled.
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const timer = setTimeout(() => {
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// Use a timer here to ensure we reset after the new comment has been rendered.
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discussionElement.scrollTop = 0;
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}, COMMENT_SCROLL_TIMEOUT);
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return () => clearTimeout(timer);
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}
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [commentsLength]); // (Just respond to 'commentsLength' updates and nothing else)
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// Stop spinner for resolving superchats
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React.useEffect(() => {
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if (resolvingSuperChat) {
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// The real solution to the sluggishness is to fix the claim store/selectors
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// and to paginate the long superchat list. This serves as a band-aid,
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// showing a spinner while we batch-resolve. The duration is just a rough
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// estimate -- the lag will handle the remaining time.
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const timer = setTimeout(() => {
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setResolvingSuperChat(false);
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// Scroll to the top:
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const livestreamCommentsDiv = document.getElementsByClassName('livestream__comments')[0];
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const divHeight = livestreamCommentsDiv.scrollHeight;
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livestreamCommentsDiv.scrollTop = divHeight * -1;
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}, 1000);
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return () => clearTimeout(timer);
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}
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}, [resolvingSuperChat]);
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// sum total amounts for fiat tips and lbc tips
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if (superChatsByTipAmount) {
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let fiatAmount = 0;
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let LBCAmount = 0;
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for (const superChat of superChatsByTipAmount) {
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if (superChat.is_fiat) {
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fiatAmount = fiatAmount + superChat.support_amount;
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} else {
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LBCAmount = LBCAmount + superChat.support_amount;
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}
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}
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superChatsFiatAmount = fiatAmount;
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superChatsLBCAmount = LBCAmount;
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superChatsTotalAmount = superChatsFiatAmount + superChatsLBCAmount;
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hasSuperChats = (superChatsTotalAmount || 0) > 0;
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}
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let superChatsReversed;
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// array of superchats organized by fiat or not first, then support amount
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if (superChatsByTipAmount) {
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const clonedSuperchats = JSON.parse(JSON.stringify(superChatsByTipAmount));
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// for top to bottom display, oldest superchat on top most recent on bottom
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superChatsReversed = clonedSuperchats.sort((a, b) => {
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return b.timestamp - a.timestamp;
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});
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}
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// todo: implement comment_list --mine in SDK so redux can grab with selectCommentIsMine
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function isMyComment(channelId: string) {
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return myChannelIds ? myChannelIds.includes(channelId) : false;
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}
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if (!claim) {
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return null;
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}
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function getStickerUrl(comment: string) {
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const stickerFromComment = parseSticker(comment);
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return stickerFromComment && stickerFromComment.url;
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}
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return (
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<div className="card livestream__discussion">
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<div className="card__header--between livestream-discussion__header">
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<div className="livestream-discussion__title">{__('Live discussion')}</div>
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{hasSuperChats && (
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<div className="recommended-content__toggles">
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{/* the superchats in chronological order button */}
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<Button
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className={classnames('button-toggle', { 'button-toggle--active': viewMode === VIEW_MODES.CHAT })}
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label={__('Chat')}
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onClick={() => {
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setViewMode(VIEW_MODES.CHAT);
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const livestreamCommentsDiv = document.getElementsByClassName('livestream__comments')[0];
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livestreamCommentsDiv.scrollTop = livestreamCommentsDiv.scrollHeight;
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}}
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/>
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{/* the button to show superchats listed by most to least support amount */}
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<Button
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className={classnames('button-toggle', { 'button-toggle--active': viewMode === VIEW_MODES.SUPERCHAT })}
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label={
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<>
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<CreditAmount amount={superChatsLBCAmount || 0} size={8} /> /
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<CreditAmount amount={superChatsFiatAmount || 0} size={8} isFiat /> {__('Tipped')}
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</>
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}
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onClick={() => {
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resolveSuperChat();
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setViewMode(VIEW_MODES.SUPERCHAT);
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}}
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/>
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</div>
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)}
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</div>
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<>
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{fetchingComments && !commentsByChronologicalOrder && (
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<div className="main--empty">
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<Spinner />
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</div>
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)}
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<div ref={commentsRef} className="livestream__comments-wrapper">
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{viewMode === VIEW_MODES.CHAT && superChatsByTipAmount && hasSuperChats && (
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<div className="livestream-superchats__wrapper">
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<div className="livestream-superchats__inner">
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{superChatTopTen.map((superChat: Comment) => {
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const { comment, comment_id, channel_url, support_amount, is_fiat } = superChat;
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const isSticker = stickerSuperChats && stickerSuperChats.includes(superChat);
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const stickerImg = <OptimizedImage src={getStickerUrl(comment)} waitLoad loading="lazy" />;
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return (
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<Tooltip title={isSticker ? stickerImg : comment} key={comment_id}>
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<div className="livestream-superchat">
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<div className="livestream-superchat__thumbnail">
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<ChannelThumbnail uri={channel_url} xsmall />
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</div>
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<div
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className={classnames('livestream-superchat__info', {
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'livestream-superchat__info--sticker': isSticker,
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'livestream-superchat__info--not-sticker': stickerSuperChats && !isSticker,
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})}
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>
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<div className="livestream-superchat__info--user">
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<UriIndicator uri={channel_url} link />
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<CreditAmount
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hideTitle
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size={10}
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className="livestream-superchat__amount-large"
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amount={support_amount}
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isFiat={is_fiat}
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/>
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</div>
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{isSticker && <div className="livestream-superchat__info--image">{stickerImg}</div>}
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</div>
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</div>
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</Tooltip>
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);
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})}
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{showMoreSuperChatsButton && (
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<Button
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title={__('Show More...')}
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label={__('Show More')}
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button="inverse"
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className="close-button"
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onClick={() => {
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resolveSuperChat();
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setViewMode(VIEW_MODES.SUPERCHAT);
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}}
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iconRight={ICONS.MORE}
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/>
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)}
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</div>
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</div>
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)}
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{pinnedComment && showPinned && viewMode === VIEW_MODES.CHAT && (
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<div className="livestream-pinned__wrapper">
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<LivestreamComment
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key={pinnedComment.comment_id}
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uri={uri}
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authorUri={pinnedComment.channel_url}
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commentId={pinnedComment.comment_id}
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message={pinnedComment.comment}
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supportAmount={pinnedComment.support_amount}
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isModerator={pinnedComment.is_moderator}
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isGlobalMod={pinnedComment.is_global_mod}
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isFiat={pinnedComment.is_fiat}
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isPinned={pinnedComment.is_pinned}
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commentIsMine={pinnedComment.channel_id && isMyComment(pinnedComment.channel_id)}
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/>
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<Button
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title={__('Dismiss pinned comment')}
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button="inverse"
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className="close-button"
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onClick={() => setShowPinned(false)}
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icon={ICONS.REMOVE}
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/>
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</div>
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)}
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{/* top to bottom comment display */}
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{!fetchingComments && commentsByChronologicalOrder.length > 0 ? (
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<div className="livestream__comments">
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{viewMode === VIEW_MODES.CHAT &&
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commentsToDisplay.map((comment) => (
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<LivestreamComment
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key={comment.comment_id}
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uri={uri}
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authorUri={comment.channel_url}
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commentId={comment.comment_id}
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message={comment.comment}
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supportAmount={comment.support_amount}
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isModerator={comment.is_moderator}
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isGlobalMod={comment.is_global_mod}
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isFiat={comment.is_fiat}
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commentIsMine={comment.channel_id && isMyComment(comment.channel_id)}
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/>
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))}
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{viewMode === VIEW_MODES.SUPERCHAT && resolvingSuperChat && (
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<div className="main--empty">
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<Spinner />
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</div>
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)}
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{viewMode === VIEW_MODES.SUPERCHAT &&
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!resolvingSuperChat &&
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superChatsReversed &&
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superChatsReversed.map((comment) => (
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<LivestreamComment
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key={comment.comment_id}
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uri={uri}
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authorUri={comment.channel_url}
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commentId={comment.comment_id}
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message={comment.comment}
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supportAmount={comment.support_amount}
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isModerator={comment.is_moderator}
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isGlobalMod={comment.is_global_mod}
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isFiat={comment.is_fiat}
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commentIsMine={comment.channel_id && isMyComment(comment.channel_id)}
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/>
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))}
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</div>
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) : (
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<div className="main--empty" style={{ flex: 1 }} />
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)}
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{scrollPos < 0 && viewMode === VIEW_MODES.CHAT && (
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<Button
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button="secondary"
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className="livestream__comments__scroll-to-recent"
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label={__('Recent Comments')}
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onClick={restoreScrollPos}
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iconRight={ICONS.DOWN}
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/>
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)}
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<div className="livestream__comment-create">
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<CommentCreate isLivestream bottom embed={embed} uri={uri} onDoneReplying={restoreScrollPos} />
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</div>
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</div>
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</>
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</div>
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);
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}
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