import type { Server as HttpServer } from "node:http"
import { Server } from "socket.io"
import type {
  ClientToServerEvents,
  InterServerEvents,
  ServerToClientEvents,
  SocketData,
} from "@nerdware/shared"
import { env } from "./env"
import { registerRoomHandlers } from "./handlers"
import { RoomManager } from "./rooms"

/** Serveur Socket.IO entièrement typé via les events partagés. */
export type IoServer = Server<
  ClientToServerEvents,
  ServerToClientEvents,
  InterServerEvents,
  SocketData
>

/** Crée et attache le serveur Socket.IO au serveur HTTP de Fastify. */
export function createSocketServer(httpServer: HttpServer): IoServer {
  const io: IoServer = new Server(httpServer, {
    cors: {
      origin: env.corsOrigins,
      methods: ["GET", "POST"],
    },
  })

  const rooms = new RoomManager()

  io.on("connection", (socket) => {
    console.log(`[ws] connect ${socket.id}`)
    registerRoomHandlers(io, socket, rooms)
    socket.on("disconnect", (reason) => {
      console.log(`[ws] disconnect ${socket.id} (${reason})`)
    })
  })

  return io
}