import { v4 as uuidv4 } from 'uuid';
import { IMqttClient } from './mqtt/interface';

export function exposeSmarthubTools(
  ha: IMqttClient,
  fimp: IMqttClient,
  hubAddr = 'pt:j1/mt:cmd/rt:app/rn:zb/ad:1',
) {
  const base = 'homeassistant/switch/fh_zb_pairing';
  const device = {
    identifiers: ['futurehome_hub'],
    name: 'Futurehome Hub',
    model: 'Smarthub',
  };

  ha.publish(
    `${base}/config`,
    JSON.stringify({
      name: 'Zigbee Pairing',
      uniq_id: 'fh_zb_pairing',
      cmd_t: `${base}/set`,
      stat_t: `${base}/state`,
      device,
    }),
    { retain: true, qos: 2 },
  );

  //   // keep last known state locally
  //   let pairingOn = false;

  ha.subscribe(`${base}/set`);
  ha.on('message', (topic, payload) => {
    if (topic !== `${base}/set`) return;
    const turnOn = payload.toString() === 'ON';

    // // optimistic update so the UI flips instantly
    // pairingOn = turnOn;
    ha.publish(`${base}/state`, turnOn ? 'ON' : 'OFF', {
      retain: true,
      qos: 2,
    });

    // placeholder FIMP message – adjust to real API if different
    fimp.publish(
      hubAddr,
      JSON.stringify({
        type: 'cmd.pairing_mode.set',
        service: 'zigbee',
        uid: uuidv4(),
        val_t: 'str',
        val: turnOn ? 'start' : 'stop',
      }),
      { qos: 1 },
    );
  });

  // (optional) listen for hub-side confirmation and correct state here
}