65 lines
2 KiB
TypeScript
65 lines
2 KiB
TypeScript
import { type ServerWebSocket } from "bun"
|
|
|
|
type WebsocketData = {
|
|
clientId: string
|
|
}
|
|
|
|
type Message =
|
|
| { type: 'presence-information', others: number }
|
|
| { type: 'ripple', position: [number, number], maxRadius: number }
|
|
|
|
const clients: Map<WebsocketData['clientId'], ServerWebSocket<WebsocketData>> = new Map()
|
|
|
|
const server = Bun.serve<WebsocketData>({
|
|
fetch(req, server) {
|
|
// TODO Allow creating private ponds
|
|
server.upgrade(req, {
|
|
data: {
|
|
clientId: crypto.randomUUID()
|
|
}
|
|
})
|
|
},
|
|
websocket: {
|
|
open(ws) {
|
|
// register newly connected client and tell them how many other people are there
|
|
console.log('Connection opened', ws.data.clientId)
|
|
clients.set(ws.data.clientId, ws)
|
|
const enterNotice = JSON.stringify(<Message>{
|
|
type: 'presence-information',
|
|
others: clients.size,
|
|
})
|
|
for (const [uuid, client] of clients.entries()) {
|
|
if (uuid !== ws.data.clientId) {
|
|
client.send(enterNotice, true)
|
|
}
|
|
}
|
|
},
|
|
message(ws, message) {
|
|
// broadcast message to all other clients
|
|
// TODO: Validate message shape
|
|
const msg = JSON.parse(`${message}`)
|
|
console.log('Relaying message from', ws.data.clientId, msg)
|
|
for (const [uuid, client] of clients.entries()) {
|
|
if (uuid !== ws.data.clientId) {
|
|
client.send(message)
|
|
}
|
|
}
|
|
},
|
|
close(ws, code, reason) {
|
|
// remove client from list of registered clients and tell other clients how many people are there
|
|
console.log('Connection closed', ws.data.clientId)
|
|
clients.delete(ws.data.clientId)
|
|
const leaveNotice = JSON.stringify(<Message>{
|
|
type: 'presence-information',
|
|
others: clients.size,
|
|
})
|
|
for (const [uuid, client] of clients.entries()) {
|
|
if (uuid !== ws.data.clientId) {
|
|
client.send(leaveNotice, true)
|
|
}
|
|
}
|
|
}
|
|
},
|
|
})
|
|
|
|
console.log(`Server running on ${server.hostname}:${server.port}`)
|