client/src/contexts/MessengerProvider.tsx

/*
 * Copyright (C) 2022 Savoir-faire Linux Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this program.  If not, see
 * <https://www.gnu.org/licenses/>.
 */
import { ConversationMessage, IConversationRequest, WebSocketMessageType } from 'jami-web-common';
import { createContext, ReactNode, useContext, useEffect, useMemo } from 'react';

import { useAddConversationRequestToCache, useRefreshConversationsSummaries } from '../services/conversationQueries';
import { WebSocketContext } from './WebSocketProvider';

// It is not sure yet we want this context to have no value
// eslint-disable-next-line @typescript-eslint/no-empty-interface
export interface IMessengerContext {}

const defaultMessengerContext: IMessengerContext = {};

export const MessengerContext = createContext<IMessengerContext>(defaultMessengerContext);

export default ({ children }: { children: ReactNode }) => {
  const webSocket = useContext(WebSocketContext);

  const refreshConversationsSummaries = useRefreshConversationsSummaries();
  const addConversationRequestToCache = useAddConversationRequestToCache();

  useEffect(() => {
    if (!webSocket) {
      return;
    }

    const conversationMessageListener = (_data: ConversationMessage) => {
      refreshConversationsSummaries();
    };

    const conversationRequestListener = (conversationRequest: IConversationRequest) => {
      addConversationRequestToCache(conversationRequest);
    };

    webSocket.bind(WebSocketMessageType.ConversationMessage, conversationMessageListener);
    webSocket.bind(WebSocketMessageType.ConversationRequest, conversationRequestListener);

    return () => {
      webSocket.unbind(WebSocketMessageType.ConversationMessage, conversationMessageListener);
      webSocket.unbind(WebSocketMessageType.ConversationRequest, conversationRequestListener);
    };
  }, [addConversationRequestToCache, refreshConversationsSummaries, webSocket]);

  const value = useMemo<IMessengerContext>(() => ({}), []);

  return <MessengerContext.Provider value={value}>{children}</MessengerContext.Provider>;
};