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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3x 3x 3x 3x 1x 1x 1x 3x 1x 1x 1x 3x 1x 1x 1x 1x 1x 1x 1x 3x 3x 2x 2x 2x 2x 2x 2x 2x 2x | import { useEffect, useRef } from "react";
import { websocketUrl } from "../api";
import { useSessionStore } from "../store";
import type { WebEvent } from "../types";
const INITIAL_DELAY = 1000;
const MAX_DELAY = 30000;
export function useLiveSessionEvents(
sessionKey: string | null,
liveSessionId: string | null,
): void {
const applyEvent = useSessionStore((state) => state.applyEvent);
const setConnection = useSessionStore((state) => state.setConnection);
const retryDelay = useRef(INITIAL_DELAY);
useEffect(() => {
if (!sessionKey || !liveSessionId) {
if (sessionKey) {
setConnection(sessionKey, "disconnected");
}
return;
}
const currentSessionKey = sessionKey;
const currentLiveSessionId = liveSessionId;
let socket: WebSocket | null = null;
let retryTimer: ReturnType<typeof setTimeout> | null = null;
let disposed = false;
function connect() {
if (disposed) return;
setConnection(currentSessionKey, "connecting");
socket = new WebSocket(websocketUrl(`/api/events/${currentLiveSessionId}`));
socket.onopen = () => {
retryDelay.current = INITIAL_DELAY;
setConnection(currentSessionKey, "connected");
};
socket.onmessage = (message) => {
if (typeof message.data !== "string") {
return;
}
applyEvent(currentSessionKey, JSON.parse(message.data) as WebEvent);
};
socket.onclose = () => {
if (disposed) return;
setConnection(currentSessionKey, "disconnected");
retryTimer = setTimeout(() => {
retryDelay.current = Math.min(retryDelay.current * 2, MAX_DELAY);
connect();
}, retryDelay.current);
};
socket.onerror = () => {
socket?.close();
};
}
connect();
return () => {
disposed = true;
if (retryTimer) clearTimeout(retryTimer);
socket?.close();
};
}, [applyEvent, sessionKey, liveSessionId, setConnection]);
}
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