| /* |
| * 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 { WebSocketMessage, WebSocketMessageType } from 'jami-web-common'; |
| import { createContext, useCallback, useEffect, useRef, useState } from 'react'; |
| |
| import { apiUrl } from '../utils/constants'; |
| import { WithChildren } from '../utils/utils'; |
| import { useAuthContext } from './AuthProvider'; |
| |
| export type WebSocketMessageFn = (message: WebSocketMessage) => void; |
| |
| interface IWebSocketContext { |
| bind: (type: WebSocketMessageType, callback: WebSocketMessageFn) => void; |
| send: WebSocketMessageFn; |
| } |
| |
| export const WebSocketContext = createContext<IWebSocketContext | undefined>(undefined); |
| |
| export default ({ children }: WithChildren) => { |
| const [isConnected, setIsConnected] = useState(false); |
| const webSocketRef = useRef<WebSocket>(); |
| const callbacksRef = useRef(new Map<WebSocketMessageType, WebSocketMessageFn[]>()); |
| |
| const { token: accessToken } = useAuthContext(); |
| |
| const bind = useCallback((type: WebSocketMessageType, messageCallback: WebSocketMessageFn) => { |
| const messageCallbacks = callbacksRef.current.get(type); |
| if (messageCallbacks) { |
| messageCallbacks.push(messageCallback); |
| } else { |
| callbacksRef.current.set(type, [messageCallback]); |
| } |
| }, []); |
| |
| const send = useCallback( |
| (message: WebSocketMessage) => { |
| if (isConnected) { |
| webSocketRef.current?.send(JSON.stringify(message)); |
| } |
| }, |
| [isConnected] |
| ); |
| |
| const handleOnOpen = useCallback(() => setIsConnected(true), []); |
| |
| const handleOnClose = useCallback(() => { |
| setIsConnected(false); |
| callbacksRef.current.clear(); |
| }, []); |
| |
| const handleOnMessage = useCallback(({ data }: MessageEvent<string>) => { |
| const message: WebSocketMessage = JSON.parse(data); |
| const messageCallbacks = callbacksRef.current.get(message.type); |
| if (messageCallbacks) { |
| for (const messageCallback of messageCallbacks) { |
| messageCallback(message); |
| } |
| } else { |
| console.warn(`Unhandled message of type ${message.type}`); |
| } |
| }, []); |
| |
| const handleOnError = useCallback((event: Event) => { |
| console.error('Closing WebSocket due to an error:', event); |
| webSocketRef.current?.close(); |
| }, []); |
| |
| useEffect(() => { |
| const url = new URL(apiUrl); |
| url.protocol = 'ws:'; |
| url.searchParams.set('accessToken', accessToken); |
| |
| const webSocket = new WebSocket(url); |
| webSocket.onopen = handleOnOpen; |
| webSocket.onclose = handleOnClose; |
| webSocket.onmessage = handleOnMessage; |
| webSocket.onerror = handleOnError; |
| |
| webSocketRef.current = webSocket; |
| |
| return () => webSocket.close(); |
| }, [accessToken, handleOnOpen, handleOnClose, handleOnMessage, handleOnError]); |
| |
| return isConnected ? ( |
| <WebSocketContext.Provider value={{ bind, send }}>{children}</WebSocketContext.Provider> |
| ) : ( |
| <>{children}</> |
| ); |
| }; |