98 lines
2.2 KiB
TypeScript
98 lines
2.2 KiB
TypeScript
import type { Socket } from "bun";
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type ApiEnvelope =
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| { type: "hello" }
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| { type: "device_event"; deviceId: string; event: unknown };
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type DeviceMessage = {
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DeviceId: string;
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} | {
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QuizResponse: number;
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}
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const sockets = new Map<string, Socket>();
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const socketIds = new WeakMap<Socket, string>();
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const apiSocket = new WebSocket("ws://localhost:4000/api/dev-socket/ws");
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function socketDeviceId(socket: Socket) {
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return socketIds.get(socket);
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}
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function registerSocket(socket: Socket, deviceId: string) {
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const existing = sockets.get(deviceId);
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if (existing && existing !== socket) existing.end();
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sockets.set(deviceId, socket);
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socketIds.set(socket, deviceId);
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console.log("Registered", socket.remoteAddress, deviceId);
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}
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const listener = Bun.listen({
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port: 7070,
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hostname: "0.0.0.0",
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socket: {
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open(socket) {
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socket.setKeepAlive(true);
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console.log("Connection", socket.remoteAddress, socket.remotePort);
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},
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data(socket, buf) {
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const raw = new TextDecoder().decode(buf).trim();
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let data: DeviceMessage;
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try {
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data = JSON.parse(raw);
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} catch {
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return;
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}
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console.log("Data", socket.remoteAddress, data);
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if (!data) return;
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if ("DeviceId" in data) {
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registerSocket(socket, data.DeviceId);
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return;
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}
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if ("QuizResponse" in data) {
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}
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// apiSocket?.send(
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// JSON.stringify({
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// type: "device_message",
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// deviceId: currentDeviceId,
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// payload: raw,
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// }),
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// );
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},
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close(socket) {
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console.log("Connection", socket.remoteAddress);
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const deviceId = socketDeviceId(socket);
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if (deviceId && sockets.get(deviceId) === socket) {
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sockets.delete(deviceId);
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}
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},
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},
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});
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apiSocket.onmessage = (e) => {
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let message: ApiEnvelope;
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try {
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message = JSON.parse(e.data) as ApiEnvelope;
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} catch {
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return;
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}
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if (message.type !== "device_event") return;
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const socket = sockets.get(message.deviceId);
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if (!socket) return;
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socket.write(`${JSON.stringify(message.event)}\n`);
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};
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apiSocket.onerror = (error) => {
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console.error(error);
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};
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apiSocket.onopen = () => {
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console.log("Connected to API device socket");
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};
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console.log(`Started on :${listener.port}`);
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