// Socket.IO client singleton — import this anywhere to get the shared socket

import { io, Socket } from "socket.io-client";

const API_URL = process.env.NEXT_PUBLIC_API_URL ?? "http://localhost:8000";

let socket: Socket | null = null;

export function getSocket(): Socket {
  if (!socket) {
    socket = io(API_URL, {
      transports: ["websocket", "polling"],
      autoConnect: true,
      reconnectionAttempts: 5,
      reconnectionDelay: 1500,
    });

    socket.on("connect", () => {
      console.log("[Socket.IO] connected:", socket?.id);
    });
    socket.on("disconnect", (reason) => {
      console.log("[Socket.IO] disconnected:", reason);
    });
    socket.on("connect_error", (err) => {
      console.warn("[Socket.IO] connection error:", err.message);
    });
  }
  return socket;
}

export function joinNegotiation(negotiationId: string) {
  getSocket().emit("join_negotiation", { negotiation_id: negotiationId });
}

export function leaveNegotiation(negotiationId: string) {
  getSocket().emit("leave_negotiation", { negotiation_id: negotiationId });
}