/**
 * React integration for webrtc-mesh — auto-init, expose peer list, send helper.
 */
import { useEffect, useState, useCallback } from 'react'
import { initWebRTC, getWebRTCPeers, getWebRTCPeerId, onWebRTC, sendWebRTC, type WebRTCPeer } from '../lib/webrtc-mesh'

export function useWebRTC(enabled: boolean = true) {
  const [peers, setPeers] = useState<WebRTCPeer[]>([])
  const [selfId] = useState(() => getWebRTCPeerId())

  useEffect(() => {
    if (!enabled) return
    initWebRTC().catch(() => {})
    const refresh = () => setPeers(getWebRTCPeers())
    refresh()
    const iv = setInterval(refresh, 5000)
    const unsub = onWebRTC(() => refresh())
    return () => { clearInterval(iv); unsub() }
  }, [enabled])

  const send = useCallback((msg: string) => sendWebRTC(msg), [])

  return { peers, selfId, send }
}