import express from 'express';
import { createServer } from 'http';
import { Server } from 'socket.io';
import { handler } from './build/handler.js';

const app = express();
const server = createServer(app);

const io = new Server(server, {
	cors: {
		origin: process.env.ORIGIN || 'http://localhost:3000',
		credentials: true
	}
});

// Socket.IO auth + room management
io.on('connection', (socket) => {
	console.log(`Socket connected: ${socket.id}`);

	socket.on('join-board', (boardId) => {
		socket.join(`board:${boardId}`);
		socket.to(`board:${boardId}`).emit('user-joined', { socketId: socket.id });
	});

	socket.on('leave-board', (boardId) => {
		socket.leave(`board:${boardId}`);
		socket.to(`board:${boardId}`).emit('user-left', { socketId: socket.id });
	});

	socket.on('disconnect', () => {
		console.log(`Socket disconnected: ${socket.id}`);
	});
});

// Store io globally so it can be accessed if needed
globalThis.__socketIO = io;

// SvelteKit handler
app.use(handler);

const port = process.env.PORT || 3000;
const host = process.env.HOST || '0.0.0.0';

server.listen(port, host, () => {
	console.log(`Server running on http://${host}:${port}`);
});