import { createServer } from "openssl-dtls"
import { EventEmitter } from "events"

export class DTLSSocket extends EventEmitter {
  constructor(options) {
    super()
    this.dtlsServer = createServer(options)

    this.dtlsServer.on("secureConnection", peer => {
      peer.on("message", msg => {
        this.emit("message", msg, peer.address())
      })
    })
  }

  send(message, port, host, callback) {
    // here I duplicate https://github.com/jue89/node-openssl-dtls/blob/7e16a03d504d72d0d7027a7111e6a21f79ca3692/server.js#L51
    const key = `${host} ${port}`
    const peer = this.dtlsServer.peers[key]

    if (peer) {
      peer.send(message)
      callback()
    } else {
      callback(new Error('No client connection stored at this address'))
    }
  }
}