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Channel.tsx
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import React, {
PropsWithChildren,
useCallback,
useEffect,
useLayoutEffect,
useMemo,
useReducer,
useRef,
useState,
} from 'react';
import debounce from 'lodash.debounce';
import defaultsDeep from 'lodash.defaultsdeep';
import throttle from 'lodash.throttle';
import {
ChannelAPIResponse,
ChannelMemberResponse,
ChannelQueryOptions,
ChannelState,
Event,
EventAPIResponse,
Message,
MessageResponse,
SendMessageAPIResponse,
Channel as StreamChannel,
StreamChat,
UpdatedMessage,
UserResponse,
} from 'stream-chat';
import { nanoid } from 'nanoid';
import clsx from 'clsx';
import { channelReducer, ChannelStateReducer, initialState } from './channelState';
import { useCreateChannelStateContext } from './hooks/useCreateChannelStateContext';
import { useCreateTypingContext } from './hooks/useCreateTypingContext';
import { useEditMessageHandler } from './hooks/useEditMessageHandler';
import { useIsMounted } from './hooks/useIsMounted';
import { OnMentionAction, useMentionsHandlers } from './hooks/useMentionsHandlers';
import { Attachment as DefaultAttachment } from '../Attachment/Attachment';
import {
LoadingErrorIndicator as DefaultLoadingErrorIndicator,
LoadingErrorIndicatorProps,
} from '../Loading';
import { LoadingChannel as DefaultLoadingIndicator } from './LoadingChannel';
import { MessageSimple } from '../Message/MessageSimple';
import { DropzoneProvider } from '../MessageInput/DropzoneProvider';
import {
ChannelActionContextValue,
ChannelActionProvider,
MarkReadWrapperOptions,
MessageToSend,
} from '../../context/ChannelActionContext';
import {
ChannelNotifications,
ChannelStateProvider,
StreamMessage,
} from '../../context/ChannelStateContext';
import { ComponentContextValue, ComponentProvider } from '../../context/ComponentContext';
import { useChatContext } from '../../context/ChatContext';
import { useTranslationContext } from '../../context/TranslationContext';
import { TypingProvider } from '../../context/TypingContext';
import {
DEFAULT_INITIAL_CHANNEL_PAGE_SIZE,
DEFAULT_NEXT_CHANNEL_PAGE_SIZE,
DEFAULT_THREAD_PAGE_SIZE,
} from '../../constants/limits';
import type { UnreadMessagesNotificationProps } from '../MessageList';
import { hasMoreMessagesProbably, UnreadMessagesSeparator } from '../MessageList';
import { useChannelContainerClasses } from './hooks/useChannelContainerClasses';
import { makeAddNotifications } from './utils';
import { getChannel } from '../../utils';
import type { MessageProps } from '../Message/types';
import type { MessageInputProps } from '../MessageInput/MessageInput';
import type {
ChannelUnreadUiState,
CustomTrigger,
DefaultStreamChatGenerics,
GiphyVersions,
ImageAttachmentSizeHandler,
SendMessageOptions,
UpdateMessageOptions,
VideoAttachmentSizeHandler,
} from '../../types/types';
import {
getImageAttachmentConfiguration,
getVideoAttachmentConfiguration,
} from '../Attachment/attachment-sizing';
import type { URLEnrichmentConfig } from '../MessageInput/hooks/useLinkPreviews';
import { defaultReactionOptions, ReactionOptions } from '../Reactions';
import { EventComponent } from '../EventComponent';
import { DateSeparator } from '../DateSeparator';
type ChannelPropsForwardedToComponentContext<
StreamChatGenerics extends DefaultStreamChatGenerics = DefaultStreamChatGenerics
> = {
/** Custom UI component to display a message attachment, defaults to and accepts same props as: [Attachment](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Attachment/Attachment.tsx) */
Attachment?: ComponentContextValue<StreamChatGenerics>['Attachment'];
/** Custom UI component to display a attachment previews in MessageInput, defaults to and accepts same props as: [Attachment](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/AttachmentPreviewList.tsx) */
AttachmentPreviewList?: ComponentContextValue<StreamChatGenerics>['AttachmentPreviewList'];
/** Optional UI component to override the default suggestion Header component, defaults to and accepts same props as: [Header](https://github.com/GetStream/stream-chat-react/blob/master/src/components/AutoCompleteTextarea/Header.tsx) */
AutocompleteSuggestionHeader?: ComponentContextValue<StreamChatGenerics>['AutocompleteSuggestionHeader'];
/** Optional UI component to override the default suggestion Item component, defaults to and accepts same props as: [Item](https://github.com/GetStream/stream-chat-react/blob/master/src/components/AutoCompleteTextarea/Item.js) */
AutocompleteSuggestionItem?: ComponentContextValue<StreamChatGenerics>['AutocompleteSuggestionItem'];
/** Optional UI component to override the default List component that displays suggestions, defaults to and accepts same props as: [List](https://github.com/GetStream/stream-chat-react/blob/master/src/components/AutoCompleteTextarea/List.js) */
AutocompleteSuggestionList?: ComponentContextValue<StreamChatGenerics>['AutocompleteSuggestionList'];
/** UI component to display a user's avatar, defaults to and accepts same props as: [Avatar](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Avatar/Avatar.tsx) */
Avatar?: ComponentContextValue<StreamChatGenerics>['Avatar'];
/** Custom UI component to display <img/> elements resp. a fallback in case of load error, defaults to and accepts same props as: [BaseImage](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Gallery/BaseImage.tsx) */
BaseImage?: ComponentContextValue<StreamChatGenerics>['BaseImage'];
/** Custom UI component to display the slow mode cooldown timer, defaults to and accepts same props as: [CooldownTimer](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/CooldownTimer.tsx) */
CooldownTimer?: ComponentContextValue<StreamChatGenerics>['CooldownTimer'];
/** Custom UI component to render set of buttons to be displayed in the MessageActionsBox, defaults to and accepts same props as: [CustomMessageActionsList](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageActions/CustomMessageActionsList.tsx) */
CustomMessageActionsList?: ComponentContextValue<StreamChatGenerics>['CustomMessageActionsList'];
/** Custom UI component for date separators, defaults to and accepts same props as: [DateSeparator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/DateSeparator.tsx) */
DateSeparator?: ComponentContextValue<StreamChatGenerics>['DateSeparator'];
/** Custom UI component to override default edit message input, defaults to and accepts same props as: [EditMessageForm](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/EditMessageForm.tsx) */
EditMessageInput?: ComponentContextValue<StreamChatGenerics>['EditMessageInput'];
/** Custom UI component for rendering button with emoji picker in MessageInput */
EmojiPicker?: ComponentContextValue<StreamChatGenerics>['EmojiPicker'];
/** Mechanism to be used with autocomplete and text replace features of the `MessageInput` component, see [emoji-mart `SearchIndex`](https://github.com/missive/emoji-mart#%EF%B8%8F%EF%B8%8F-headless-search) */
emojiSearchIndex?: ComponentContextValue<StreamChatGenerics>['emojiSearchIndex'];
/** Custom UI component to be displayed when the `MessageList` is empty, defaults to and accepts same props as: [EmptyStateIndicator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/EmptyStateIndicator/EmptyStateIndicator.tsx) */
EmptyStateIndicator?: ComponentContextValue<StreamChatGenerics>['EmptyStateIndicator'];
/** Custom UI component for file upload icon, defaults to and accepts same props as: [FileUploadIcon](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/icons.tsx) */
FileUploadIcon?: ComponentContextValue<StreamChatGenerics>['FileUploadIcon'];
/** Custom UI component to render a Giphy preview in the `VirtualizedMessageList` */
GiphyPreviewMessage?: ComponentContextValue<StreamChatGenerics>['GiphyPreviewMessage'];
/** Custom UI component to render at the top of the `MessageList` */
HeaderComponent?: ComponentContextValue<StreamChatGenerics>['HeaderComponent'];
/** Custom UI component handling how the message input is rendered, defaults to and accepts the same props as [MessageInputFlat](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/MessageInputFlat.tsx) */
Input?: ComponentContextValue<StreamChatGenerics>['Input'];
/** Custom component to render link previews in message input **/
LinkPreviewList?: ComponentContextValue<StreamChatGenerics>['LinkPreviewList'];
/** Custom UI component to be shown if the channel query fails, defaults to and accepts same props as: [LoadingErrorIndicator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Loading/LoadingErrorIndicator.tsx) */
LoadingErrorIndicator?: React.ComponentType<LoadingErrorIndicatorProps>;
/** Custom UI component to render while the `MessageList` is loading new messages, defaults to and accepts same props as: [LoadingIndicator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Loading/LoadingIndicator.tsx) */
LoadingIndicator?: ComponentContextValue<StreamChatGenerics>['LoadingIndicator'];
/** Custom UI component to display a message in the standard `MessageList`, defaults to and accepts the same props as: [MessageSimple](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageSimple.tsx) */
Message?: ComponentContextValue<StreamChatGenerics>['Message'];
/** Custom UI component to display the contents of a bounced message modal. Usually it allows to retry, edit, or delete the message. Defaults to and accepts the same props as: [MessageBouncePrompt](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageBounce/MessageBouncePrompt.tsx) */
MessageBouncePrompt?: ComponentContextValue<StreamChatGenerics>['MessageBouncePrompt'];
/** Custom UI component for a deleted message, defaults to and accepts same props as: [MessageDeleted](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageDeleted.tsx) */
MessageDeleted?: ComponentContextValue<StreamChatGenerics>['MessageDeleted'];
/** Custom UI component that displays message and connection status notifications in the `MessageList`, defaults to and accepts same props as [DefaultMessageListNotifications](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageList/MessageListNotifications.tsx) */
MessageListNotifications?: ComponentContextValue<StreamChatGenerics>['MessageListNotifications'];
/** Custom UI component to display a notification when scrolled up the list and new messages arrive, defaults to and accepts same props as [MessageNotification](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageList/MessageNotification.tsx) */
MessageNotification?: ComponentContextValue<StreamChatGenerics>['MessageNotification'];
/** Custom UI component for message options popup, defaults to and accepts same props as: [MessageOptions](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageOptions.tsx) */
MessageOptions?: ComponentContextValue<StreamChatGenerics>['MessageOptions'];
/** Custom UI component to display message replies, defaults to and accepts same props as: [MessageRepliesCountButton](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageRepliesCountButton.tsx) */
MessageRepliesCountButton?: ComponentContextValue<StreamChatGenerics>['MessageRepliesCountButton'];
/** Custom UI component to display message delivery status, defaults to and accepts same props as: [MessageStatus](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageStatus.tsx) */
MessageStatus?: ComponentContextValue<StreamChatGenerics>['MessageStatus'];
/** Custom UI component to display system messages, defaults to and accepts same props as: [EventComponent](https://github.com/GetStream/stream-chat-react/blob/master/src/components/EventComponent/EventComponent.tsx) */
MessageSystem?: ComponentContextValue<StreamChatGenerics>['MessageSystem'];
/** Custom UI component to display a timestamp on a message, defaults to and accepts same props as: [MessageTimestamp](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageTimestamp.tsx) */
MessageTimestamp?: ComponentContextValue<StreamChatGenerics>['MessageTimestamp'];
/** Custom UI component for viewing message's image attachments, defaults to and accepts the same props as [ModalGallery](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Gallery/ModalGallery.tsx) */
ModalGallery?: ComponentContextValue<StreamChatGenerics>['ModalGallery'];
/** Custom UI component to override default pinned message indicator, defaults to and accepts same props as: [PinIndicator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/icons.tsx) */
PinIndicator?: ComponentContextValue<StreamChatGenerics>['PinIndicator'];
/** Custom UI component to override quoted message UI on a sent message, defaults to and accepts same props as: [QuotedMessage](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/QuotedMessage.tsx) */
QuotedMessage?: ComponentContextValue<StreamChatGenerics>['QuotedMessage'];
/** Custom UI component to override the message input's quoted message preview, defaults to and accepts same props as: [QuotedMessagePreview](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/QuotedMessagePreview.tsx) */
QuotedMessagePreview?: ComponentContextValue<StreamChatGenerics>['QuotedMessagePreview'];
/** Custom reaction options to be applied to ReactionSelector, ReactionList and SimpleReactionList components */
reactionOptions?: ReactionOptions;
/** Custom UI component to display the reaction selector, defaults to and accepts same props as: [ReactionSelector](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Reactions/ReactionSelector.tsx) */
ReactionSelector?: ComponentContextValue<StreamChatGenerics>['ReactionSelector'];
/** Custom UI component to display the list of reactions on a message, defaults to and accepts same props as: [ReactionsList](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Reactions/ReactionsList.tsx) */
ReactionsList?: ComponentContextValue<StreamChatGenerics>['ReactionsList'];
/** Custom UI component for send button, defaults to and accepts same props as: [SendButton](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/icons.tsx) */
SendButton?: ComponentContextValue<StreamChatGenerics>['SendButton'];
/** Custom UI component that displays thread's parent or other message at the top of the `MessageList`, defaults to and accepts same props as [MessageSimple](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Message/MessageSimple.tsx) */
ThreadHead?: React.ComponentType<MessageProps<StreamChatGenerics>>;
/** Custom UI component to display the header of a `Thread`, defaults to and accepts same props as: [DefaultThreadHeader](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Thread/Thread.tsx) */
ThreadHeader?: ComponentContextValue<StreamChatGenerics>['ThreadHeader'];
/** Custom UI component to display the start of a threaded `MessageList`, defaults to and accepts same props as: [DefaultThreadStart](https://github.com/GetStream/stream-chat-react/blob/master/src/components/Thread/Thread.tsx) */
ThreadStart?: ComponentContextValue<StreamChatGenerics>['ThreadStart'];
/** Optional context provider that lets you override the default autocomplete triggers, defaults to: [DefaultTriggerProvider](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageInput/DefaultTriggerProvider.tsx) */
TriggerProvider?: ComponentContextValue<StreamChatGenerics>['TriggerProvider'];
/** Custom UI component for the typing indicator, defaults to and accepts same props as: [TypingIndicator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/TypingIndicator/TypingIndicator.tsx) */
TypingIndicator?: ComponentContextValue<StreamChatGenerics>['TypingIndicator'];
/** Custom UI component that indicates a user is viewing unread messages. It disappears once the user scrolls to UnreadMessagesSeparator. Defaults to and accepts same props as: [UnreadMessagesNotification](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageList/UnreadMessagesNotification.tsx) */
UnreadMessagesNotification?: React.ComponentType<UnreadMessagesNotificationProps>;
/** Custom UI component that separates read messages from unread, defaults to and accepts same props as: [UnreadMessagesSeparator](https://github.com/GetStream/stream-chat-react/blob/master/src/components/MessageList/UnreadMessagesSeparator.tsx) */
UnreadMessagesSeparator?: ComponentContextValue<StreamChatGenerics>['UnreadMessagesSeparator'];
/** Custom UI component to display a message in the `VirtualizedMessageList`, does not have a default implementation */
VirtualMessage?: ComponentContextValue<StreamChatGenerics>['VirtualMessage'];
};
const isUserResponseArray = <
StreamChatGenerics extends DefaultStreamChatGenerics = DefaultStreamChatGenerics
>(
output: string[] | UserResponse<StreamChatGenerics>[],
): output is UserResponse<StreamChatGenerics>[] =>
(output as UserResponse<StreamChatGenerics>[])[0]?.id != null;
export type ChannelProps<
StreamChatGenerics extends DefaultStreamChatGenerics = DefaultStreamChatGenerics,
V extends CustomTrigger = CustomTrigger
> = ChannelPropsForwardedToComponentContext<StreamChatGenerics> & {
/** List of accepted file types */
acceptedFiles?: string[];
/** Custom handler function that runs when the active channel has unread messages and the app is running on a separate browser tab */
activeUnreadHandler?: (unread: number, documentTitle: string) => void;
/** The connected and active channel */
channel?: StreamChannel<StreamChatGenerics>;
/**
* Optional configuration parameters used for the initial channel query.
* Applied only if the value of channel.initialized is false.
* If the channel instance has already been initialized (channel has been queried),
* then the channel query will be skipped and channelQueryOptions will not be applied.
*/
channelQueryOptions?: ChannelQueryOptions<StreamChatGenerics>;
/** Custom action handler to override the default `client.deleteMessage(message.id)` function */
doDeleteMessageRequest?: (
message: StreamMessage<StreamChatGenerics>,
) => Promise<MessageResponse<StreamChatGenerics>>;
/** Custom action handler to override the default `channel.markRead` request function (advanced usage only) */
doMarkReadRequest?: (
channel: StreamChannel<StreamChatGenerics>,
setChannelUnreadUiState?: (state: ChannelUnreadUiState) => void,
) => Promise<EventAPIResponse<StreamChatGenerics>> | void;
/** Custom action handler to override the default `channel.sendMessage` request function (advanced usage only) */
doSendMessageRequest?: (
channel: StreamChannel<StreamChatGenerics>,
message: Message<StreamChatGenerics>,
options?: SendMessageOptions,
) => ReturnType<StreamChannel<StreamChatGenerics>['sendMessage']> | void;
/** Custom action handler to override the default `client.updateMessage` request function (advanced usage only) */
doUpdateMessageRequest?: (
cid: string,
updatedMessage: UpdatedMessage<StreamChatGenerics>,
options?: UpdateMessageOptions,
) => ReturnType<StreamChat<StreamChatGenerics>['updateMessage']>;
/** If true, chat users will be able to drag and drop file uploads to the entire channel window */
dragAndDropWindow?: boolean;
/** Custom UI component to be shown if no active channel is set, defaults to null and skips rendering the Channel component */
EmptyPlaceholder?: React.ReactElement;
/**
* A global flag to toggle the URL enrichment and link previews in `MessageInput` components.
* By default, the feature is disabled. Can be overridden on Thread, MessageList level through additionalMessageInputProps
* or directly on MessageInput level through urlEnrichmentConfig.
*/
enrichURLForPreview?: URLEnrichmentConfig['enrichURLForPreview'];
/** Global configuration for link preview generation in all the MessageInput components */
enrichURLForPreviewConfig?: Omit<URLEnrichmentConfig, 'enrichURLForPreview'>;
/** The giphy version to render - check the keys of the [Image Object](https://developers.giphy.com/docs/api/schema#image-object) for possible values. Uses 'fixed_height' by default */
giphyVersion?: GiphyVersions;
/** A custom function to provide size configuration for image attachments */
imageAttachmentSizeHandler?: ImageAttachmentSizeHandler;
/**
* Allows to prevent triggering the channel.watch() call when mounting the component.
* That means that no channel data from the back-end will be received neither channel WS events will be delivered to the client.
* Preventing to initialize the channel on mount allows us to postpone the channel creation to a later point in time.
*/
initializeOnMount?: boolean;
/** Configuration parameter to mark the active channel as read when mounted (opened). By default, the channel is marked read on mount. */
markReadOnMount?: boolean;
/** Maximum number of attachments allowed per message */
maxNumberOfFiles?: number;
/** Whether to allow multiple attachment uploads */
multipleUploads?: boolean;
/** Custom action handler function to run on click of an @mention in a message */
onMentionsClick?: OnMentionAction<StreamChatGenerics>;
/** Custom action handler function to run on hover of an @mention in a message */
onMentionsHover?: OnMentionAction<StreamChatGenerics>;
/** If `dragAndDropWindow` prop is true, the props to pass to the MessageInput component (overrides props placed directly on MessageInput) */
optionalMessageInputProps?: MessageInputProps<StreamChatGenerics, V>;
/** You can turn on/off thumbnail generation for video attachments */
shouldGenerateVideoThumbnail?: boolean;
/** If true, skips the message data string comparison used to memoize the current channel messages (helpful for channels with 1000s of messages) */
skipMessageDataMemoization?: boolean;
/** A custom function to provide size configuration for video attachments */
videoAttachmentSizeHandler?: VideoAttachmentSizeHandler;
};
const UnMemoizedChannel = <
StreamChatGenerics extends DefaultStreamChatGenerics = DefaultStreamChatGenerics,
V extends CustomTrigger = CustomTrigger
>(
props: PropsWithChildren<ChannelProps<StreamChatGenerics, V>>,
) => {
const {
channel: propsChannel,
EmptyPlaceholder = null,
LoadingErrorIndicator,
LoadingIndicator = DefaultLoadingIndicator,
} = props;
const {
channel: contextChannel,
channelsQueryState,
customClasses,
theme,
} = useChatContext<StreamChatGenerics>('Channel');
const { channelClass, chatClass } = useChannelContainerClasses({
customClasses,
});
const channel = propsChannel || contextChannel;
const className = clsx(chatClass, theme, channelClass);
if (channelsQueryState.queryInProgress === 'reload' && LoadingIndicator) {
return (
<div className={className}>
<LoadingIndicator />
</div>
);
}
if (channelsQueryState.error && LoadingErrorIndicator) {
return (
<div className={className}>
<LoadingErrorIndicator error={channelsQueryState.error} />
</div>
);
}
if (!channel?.cid) {
return <div className={className}>{EmptyPlaceholder}</div>;
}
return <ChannelInner {...props} channel={channel} key={channel.cid} />;
};
const ChannelInner = <
StreamChatGenerics extends DefaultStreamChatGenerics = DefaultStreamChatGenerics,
V extends CustomTrigger = CustomTrigger
>(
props: PropsWithChildren<
ChannelProps<StreamChatGenerics, V> & {
channel: StreamChannel<StreamChatGenerics>;
key: string;
}
>,
) => {
const {
acceptedFiles,
activeUnreadHandler,
channel,
channelQueryOptions: propChannelQueryOptions,
children,
doDeleteMessageRequest,
doMarkReadRequest,
doSendMessageRequest,
doUpdateMessageRequest,
dragAndDropWindow = false,
enrichURLForPreviewConfig,
initializeOnMount = true,
LoadingErrorIndicator = DefaultLoadingErrorIndicator,
LoadingIndicator = DefaultLoadingIndicator,
markReadOnMount = true,
maxNumberOfFiles,
multipleUploads = true,
onMentionsClick,
onMentionsHover,
optionalMessageInputProps = {},
skipMessageDataMemoization,
} = props;
const channelQueryOptions: ChannelQueryOptions<StreamChatGenerics> & {
messages: { limit: number };
} = useMemo(
() =>
defaultsDeep(propChannelQueryOptions, {
messages: { limit: DEFAULT_INITIAL_CHANNEL_PAGE_SIZE },
}),
[propChannelQueryOptions],
);
const {
client,
customClasses,
latestMessageDatesByChannels,
mutes,
theme,
} = useChatContext<StreamChatGenerics>('Channel');
const { t } = useTranslationContext('Channel');
const {
channelClass,
chatClass,
chatContainerClass,
windowsEmojiClass,
} = useChannelContainerClasses({ customClasses });
const [channelConfig, setChannelConfig] = useState(channel.getConfig());
const [notifications, setNotifications] = useState<ChannelNotifications>([]);
const [quotedMessage, setQuotedMessage] = useState<StreamMessage<StreamChatGenerics>>();
const [channelUnreadUiState, _setChannelUnreadUiState] = useState<ChannelUnreadUiState>();
const notificationTimeouts: Array<NodeJS.Timeout> = [];
const [state, dispatch] = useReducer<ChannelStateReducer<StreamChatGenerics>>(
channelReducer,
// channel.initialized === false if client.channel().query() was not called, e.g. ChannelList is not used
// => Channel will call channel.watch() in useLayoutEffect => state.loading is used to signal the watch() call state
{ ...initialState, loading: !channel.initialized },
);
const isMounted = useIsMounted();
const originalTitle = useRef('');
const lastRead = useRef<Date | undefined>();
const online = useRef(true);
const channelCapabilitiesArray = channel.data?.own_capabilities as string[];
const throttledCopyStateFromChannel = throttle(
() => dispatch({ channel, type: 'copyStateFromChannelOnEvent' }),
500,
{
leading: true,
trailing: true,
},
);
const setChannelUnreadUiState = useMemo(
() =>
throttle(_setChannelUnreadUiState, 200, {
leading: true,
trailing: false,
}),
[],
);
const markRead = useMemo(
() =>
throttle(
async (options?: MarkReadWrapperOptions) => {
const { updateChannelUiUnreadState = true } = options ?? {};
if (channel.disconnected || !channelConfig?.read_events) {
return;
}
lastRead.current = new Date();
try {
if (doMarkReadRequest) {
doMarkReadRequest(
channel,
updateChannelUiUnreadState ? setChannelUnreadUiState : undefined,
);
} else {
const markReadResponse = await channel.markRead();
if (updateChannelUiUnreadState && markReadResponse) {
_setChannelUnreadUiState({
last_read: lastRead.current,
last_read_message_id: markReadResponse.event.last_read_message_id,
unread_messages: 0,
});
}
}
if (activeUnreadHandler) {
activeUnreadHandler(0, originalTitle.current);
} else if (originalTitle.current) {
document.title = originalTitle.current;
}
} catch (e) {
console.error(t<string>('Failed to mark channel as read'));
}
},
500,
{ leading: true, trailing: false },
),
[activeUnreadHandler, channel, channelConfig, doMarkReadRequest, setChannelUnreadUiState, t],
);
const handleEvent = async (event: Event<StreamChatGenerics>) => {
if (event.message) {
dispatch({
channel,
message: event.message,
type: 'updateThreadOnEvent',
});
}
if (event.type === 'user.watching.start' || event.type === 'user.watching.stop') return;
if (event.type === 'typing.start' || event.type === 'typing.stop') {
return dispatch({ channel, type: 'setTyping' });
}
if (event.type === 'connection.changed' && typeof event.online === 'boolean') {
online.current = event.online;
}
if (event.type === 'message.new') {
const mainChannelUpdated = !event.message?.parent_id || event.message?.show_in_channel;
if (mainChannelUpdated) {
if (document.hidden && channelConfig?.read_events && !channel.muteStatus().muted) {
const unread = channel.countUnread(lastRead.current);
if (activeUnreadHandler) {
activeUnreadHandler(unread, originalTitle.current);
} else {
document.title = `(${unread}) ${originalTitle.current}`;
}
}
}
if (
event.message?.user?.id === client.userID &&
event?.message?.created_at &&
event?.message?.cid
) {
const messageDate = new Date(event.message.created_at);
const cid = event.message.cid;
if (
!latestMessageDatesByChannels[cid] ||
latestMessageDatesByChannels[cid].getTime() < messageDate.getTime()
) {
latestMessageDatesByChannels[cid] = messageDate;
}
}
}
if (event.type === 'user.deleted') {
const oldestID = channel.state?.messages?.[0]?.id;
/**
* As the channel state is not normalized we re-fetch the channel data. Thus, we avoid having to search for user references in the channel state.
*/
// FIXME: we should use channelQueryOptions if they are available
await channel.query({
messages: { id_lt: oldestID, limit: DEFAULT_NEXT_CHANNEL_PAGE_SIZE },
watchers: { limit: DEFAULT_NEXT_CHANNEL_PAGE_SIZE },
});
}
if (event.type === 'notification.mark_unread')
_setChannelUnreadUiState((prev) => {
if (!(event.last_read_at && event.user)) return prev;
return {
first_unread_message_id: event.first_unread_message_id,
last_read: new Date(event.last_read_at),
last_read_message_id: event.last_read_message_id,
unread_messages: event.unread_messages ?? 0,
};
});
throttledCopyStateFromChannel();
};
// useLayoutEffect here to prevent spinner. Use Suspense when it is available in stable release
useLayoutEffect(() => {
let errored = false;
let done = false;
let channelInitializedExternally = true;
(async () => {
if (!channel.initialized && initializeOnMount) {
try {
// if active channel has been set without id, we will create a temporary channel id from its member IDs
// to keep track of the /query request in progress. This is the same approach of generating temporary id
// that the JS client uses to keep track of channel in client.activeChannels
const members: string[] = [];
if (!channel.id && channel.data?.members) {
for (const member of channel.data.members) {
let userId: string | undefined;
if (typeof member === 'string') {
userId = member;
} else if (typeof member === 'object') {
const { user, user_id } = member as ChannelMemberResponse<StreamChatGenerics>;
userId = user_id || user?.id;
}
if (userId) {
members.push(userId);
}
}
}
await getChannel({ channel, client, members, options: channelQueryOptions });
const config = channel.getConfig();
setChannelConfig(config);
channelInitializedExternally = false;
} catch (e) {
dispatch({ error: e as Error, type: 'setError' });
errored = true;
}
}
done = true;
originalTitle.current = document.title;
if (!errored) {
dispatch({
channel,
hasMore:
channelInitializedExternally ||
hasMoreMessagesProbably(
channel.state.messages.length,
channelQueryOptions.messages.limit,
),
type: 'initStateFromChannel',
});
if (client.user?.id && channel.state.read[client.user.id]) {
// eslint-disable-next-line @typescript-eslint/no-unused-vars
const { user, ...ownReadState } = channel.state.read[client.user.id];
_setChannelUnreadUiState(ownReadState);
}
/**
* TODO: maybe pass last_read to the countUnread method to get proper value
* combined with channel.countUnread adjustment (_countMessageAsUnread)
* to allow counting own messages too
*
* const lastRead = channel.state.read[client.userID as string].last_read;
*/
if (channel.countUnread() > 0 && markReadOnMount)
markRead({ updateChannelUiUnreadState: false });
// The more complex sync logic is done in Chat
client.on('connection.changed', handleEvent);
client.on('connection.recovered', handleEvent);
client.on('user.updated', handleEvent);
client.on('user.deleted', handleEvent);
channel.on(handleEvent);
}
})();
return () => {
if (errored || !done) return;
channel?.off(handleEvent);
client.off('connection.changed', handleEvent);
client.off('connection.recovered', handleEvent);
client.off('user.updated', handleEvent);
client.off('user.deleted', handleEvent);
notificationTimeouts.forEach(clearTimeout);
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [
channel.cid,
channelQueryOptions,
doMarkReadRequest,
channelConfig?.read_events,
initializeOnMount,
]);
useEffect(() => {
if (!state.thread) return;
const message = state.messages?.find((m) => m.id === state.thread?.id);
if (message) dispatch({ message, type: 'setThread' });
}, [state.messages, state.thread]);
/** MESSAGE */
// Adds a temporary notification to message list, will be removed after 5 seconds
const addNotification = makeAddNotifications(setNotifications, notificationTimeouts);
// eslint-disable-next-line react-hooks/exhaustive-deps
const loadMoreFinished = useCallback(
debounce(
(hasMore: boolean, messages: ChannelState<StreamChatGenerics>['messages']) => {
if (!isMounted.current) return;
dispatch({ hasMore, messages, type: 'loadMoreFinished' });
},
2000,
{ leading: true, trailing: true },
),
[],
);
const loadMore = async (limit = DEFAULT_NEXT_CHANNEL_PAGE_SIZE) => {
if (!online.current || !window.navigator.onLine || !state.hasMore) return 0;
// prevent duplicate loading events...
const oldestMessage = state?.messages?.[0];
if (state.loadingMore || state.loadingMoreNewer || oldestMessage?.status !== 'received') {
return 0;
}
dispatch({ loadingMore: true, type: 'setLoadingMore' });
const oldestID = oldestMessage?.id;
const perPage = limit;
let queryResponse: ChannelAPIResponse<StreamChatGenerics>;
try {
queryResponse = await channel.query({
messages: { id_lt: oldestID, limit: perPage },
watchers: { limit: perPage },
});
} catch (e) {
console.warn('message pagination request failed with error', e);
dispatch({ loadingMore: false, type: 'setLoadingMore' });
return 0;
}
const hasMoreMessages = queryResponse.messages.length === perPage;
loadMoreFinished(hasMoreMessages, channel.state.messages);
return queryResponse.messages.length;
};
const loadMoreNewer = async (limit = 100) => {
if (!online.current || !window.navigator.onLine || !state.hasMoreNewer) return 0;
const newestMessage = state?.messages?.[state?.messages?.length - 1];
if (state.loadingMore || state.loadingMoreNewer) return 0;
dispatch({ loadingMoreNewer: true, type: 'setLoadingMoreNewer' });
const newestId = newestMessage?.id;
const perPage = limit;
let queryResponse: ChannelAPIResponse<StreamChatGenerics>;
try {
queryResponse = await channel.query({
messages: { id_gt: newestId, limit: perPage },
watchers: { limit: perPage },
});
} catch (e) {
console.warn('message pagination request failed with error', e);
dispatch({ loadingMoreNewer: false, type: 'setLoadingMoreNewer' });
return 0;
}
const hasMoreNewerMessages = channel.state.messages !== channel.state.latestMessages;
dispatch({
hasMoreNewer: hasMoreNewerMessages,
messages: channel.state.messages,
type: 'loadMoreNewerFinished',
});
return queryResponse.messages.length;
};
const clearHighlightedMessageTimeoutId = useRef<ReturnType<typeof setTimeout> | null>(null);
const jumpToMessage = async (messageId: string, messageLimit = 100) => {
dispatch({ loadingMore: true, type: 'setLoadingMore' });
await channel.state.loadMessageIntoState(messageId, undefined, messageLimit);
/**
* if the message we are jumping to has less than half of the page size older messages,
* we have jumped to the beginning of the channel.
*/
const indexOfMessage = channel.state.messages.findIndex((message) => message.id === messageId);
const hasMoreMessages = indexOfMessage >= Math.floor(messageLimit / 2);
loadMoreFinished(hasMoreMessages, channel.state.messages);
dispatch({
hasMoreNewer: channel.state.messages !== channel.state.latestMessages,
highlightedMessageId: messageId,
type: 'jumpToMessageFinished',
});
if (clearHighlightedMessageTimeoutId.current) {
clearTimeout(clearHighlightedMessageTimeoutId.current);
}
clearHighlightedMessageTimeoutId.current = setTimeout(() => {
clearHighlightedMessageTimeoutId.current = null;
dispatch({ type: 'clearHighlightedMessage' });
}, 500);
};
const jumpToLatestMessage = async () => {
await channel.state.loadMessageIntoState('latest');
// FIXME: we cannot rely on constant value 25 as the page size can be customized by integrators
const hasMoreOlder = channel.state.messages.length >= 25;
loadMoreFinished(hasMoreOlder, channel.state.messages);
dispatch({
type: 'jumpToLatestMessage',
});
};
const jumpToFirstUnreadMessage = useCallback(
async (queryMessageLimit = 100) => {
if (!(client.user && channelUnreadUiState?.unread_messages)) return;
if (!channelUnreadUiState?.last_read_message_id) {
addNotification(t('Failed to jump to the first unread message'), 'error');
return;
}
let indexOfLastReadMessage;
const currentMessageSet = channel.state.messages;
for (let i = currentMessageSet.length - 1; i >= 0; i--) {
const { id } = currentMessageSet[i];
if (id === channelUnreadUiState.last_read_message_id) {
indexOfLastReadMessage = i;
break;
}
}
if (typeof indexOfLastReadMessage === 'undefined') {
dispatch({ loadingMore: true, type: 'setLoadingMore' });
let hasMoreMessages = true;
try {
await channel.state.loadMessageIntoState(
channelUnreadUiState.last_read_message_id,
undefined,
queryMessageLimit,
);
/**
* if the index of the last read message on the page is beyond the half of the page,
* we have arrived to the oldest page of the channel
*/
indexOfLastReadMessage = channel.state.messages.findIndex(
(message) => message.id === channelUnreadUiState.last_read_message_id,
) as number;
hasMoreMessages = indexOfLastReadMessage >= Math.floor(queryMessageLimit / 2);
} catch (e) {
addNotification(t('Failed to jump to the first unread message'), 'error');
loadMoreFinished(hasMoreMessages, channel.state.messages);
return;
}
loadMoreFinished(hasMoreMessages, channel.state.messages);
}
const firstUnreadMessage = channel.state.messages[indexOfLastReadMessage + 1];
const jumpToMessageId = firstUnreadMessage?.id ?? channelUnreadUiState.last_read_message_id;
dispatch({
hasMoreNewer: channel.state.messages !== channel.state.latestMessages,
highlightedMessageId: jumpToMessageId,
type: 'jumpToMessageFinished',
});
if (clearHighlightedMessageTimeoutId.current) {
clearTimeout(clearHighlightedMessageTimeoutId.current);
}
clearHighlightedMessageTimeoutId.current = setTimeout(() => {
clearHighlightedMessageTimeoutId.current = null;
dispatch({ type: 'clearHighlightedMessage' });
}, 500);
},
[addNotification, channel, client, loadMoreFinished, t, channelUnreadUiState],
);
const deleteMessage = useCallback(
async (
message: StreamMessage<StreamChatGenerics>,
): Promise<MessageResponse<StreamChatGenerics>> => {
if (!message?.id) {
throw new Error('Cannot delete a message - missing message ID.');
}
let deletedMessage;
if (doDeleteMessageRequest) {
deletedMessage = await doDeleteMessageRequest(message);
} else {
const result = await client.deleteMessage(message.id);
deletedMessage = result.message;
}
return deletedMessage;
},
[client, doDeleteMessageRequest],
);
const updateMessage = (
updatedMessage: MessageToSend<StreamChatGenerics> | StreamMessage<StreamChatGenerics>,
) => {
// add the message to the local channel state
channel.state.addMessageSorted(updatedMessage as MessageResponse<StreamChatGenerics>, true);
dispatch({
channel,
parentId: state.thread && updatedMessage.parent_id,
type: 'copyMessagesFromChannel',
});
};
const doSendMessage = async (
message: MessageToSend<StreamChatGenerics> | StreamMessage<StreamChatGenerics>,
customMessageData?: Partial<Message<StreamChatGenerics>>,
options?: SendMessageOptions,
) => {
const { attachments, id, mentioned_users = [], parent_id, text } = message;
// channel.sendMessage expects an array of user id strings
const mentions = isUserResponseArray<StreamChatGenerics>(mentioned_users)
? mentioned_users.map(({ id }) => id)
: mentioned_users;
const messageData = {
attachments,
id,
mentioned_users: mentions,
parent_id,
quoted_message_id: parent_id === quotedMessage?.parent_id ? quotedMessage?.id : undefined,
text,
...customMessageData,
} as Message<StreamChatGenerics>;
try {
let messageResponse: void | SendMessageAPIResponse<StreamChatGenerics>;
if (doSendMessageRequest) {
messageResponse = await doSendMessageRequest(channel, messageData, options);
} else {
messageResponse = await channel.sendMessage(messageData, options);
}
let existingMessage;
for (let i = channel.state.messages.length - 1; i >= 0; i--) {
const msg = channel.state.messages[i];
if (msg.id && msg.id === messageData.id) {
existingMessage = msg;
break;
}
}
const responseTimestamp = new Date(messageResponse?.message?.updated_at || 0).getTime();
const existingMessageTimestamp = existingMessage?.updated_at?.getTime() || 0;
const responseIsTheNewest = responseTimestamp > existingMessageTimestamp;
// Replace the message payload after send is completed
// We need to check for the newest message payload, because on slow network, the response can arrive later than WS events message.new, message.updated.
// Always override existing message in status "sending"
if (
messageResponse?.message &&
(responseIsTheNewest || existingMessage?.status === 'sending')
) {
updateMessage({
...messageResponse.message,
status: 'received',
});
}
if (quotedMessage && parent_id === quotedMessage?.parent_id) setQuotedMessage(undefined);
} catch (error) {
// error response isn't usable so needs to be stringified then parsed
const stringError = JSON.stringify(error);
const parsedError = stringError ? JSON.parse(stringError) : {};
updateMessage({
...message,
error: parsedError,
errorStatusCode: (parsedError.status as number) || undefined,
status: 'failed',
});
}
};
const sendMessage = async (
{
attachments = [],
mentioned_users = [],
parent,
text = '',
}: MessageToSend<StreamChatGenerics>,
customMessageData?: Partial<Message<StreamChatGenerics>>,
options?: SendMessageOptions,
) => {
channel.state.filterErrorMessages();
const messagePreview = {
__html: text,
attachments,
created_at: new Date(),
html: text,
id: customMessageData?.id ?? `${client.userID}-${nanoid()}`,
mentioned_users,
reactions: [],
status: 'sending',
text,
type: 'regular',
user: client.user,
...(parent?.id ? { parent_id: parent.id } : null),
};
updateMessage(messagePreview);
await doSendMessage(messagePreview, customMessageData, options);
};
const retrySendMessage = async (message: StreamMessage<StreamChatGenerics>) => {
updateMessage({
...message,
errorStatusCode: undefined,
status: 'sending',
});
if (message.attachments) {
// remove scraped attachments added during the message composition in MessageInput to prevent sync issues
message.attachments = message.attachments.filter((attachment) => !attachment.og_scrape_url);
}
await doSendMessage(message);
};
const removeMessage = (message: StreamMessage<StreamChatGenerics>) => {
channel.state.removeMessage(message);