// services/dectStatus/matchHandsetByMac.js
//
// Correlate base-local RSSI / statistics rows with Webex handset records.

import { normalizeMac } from '../dectDiscovery.js';

/**
 * @param {object|null} handset   Webex handset record
 * @param {object}        rssiRow  parsed RSSI entry from status.xml
 * @returns {boolean}
 */
export function handsetMatchesRssiRow(handset, rssiRow) {
  const hMac = normalizeMac(handset?.mac);
  const rMac = normalizeMac(rssiRow?.mac);
  return !!(hMac && rMac && hMac === rMac);
}

/**
 * Find the Webex handset matching an RSSI row (by MAC).
 *
 * @param {object}   rssiRow
 * @param {object[]} handsets
 * @returns {object|null}
 */
export function findHandsetForRssiRow(rssiRow, handsets) {
  const list = Array.isArray(handsets) ? handsets : [];
  return list.find((h) => handsetMatchesRssiRow(h, rssiRow)) || null;
}

/**
 * Build display rows merging RSSI with optional Webex handset metadata.
 *
 * @param {object[]} rssiRows   parsed status.rssi
 * @param {object[]} handsets   Webex handsets for this base
 * @returns {object[]}
 */
export function mergeRssiWithHandsets(rssiRows, handsets) {
  const rows = Array.isArray(rssiRows) ? rssiRows : [];
  const list = Array.isArray(handsets) ? handsets : [];
  return rows.map((row) => {
    const handset = findHandsetForRssiRow(row, list);
    return {
      rpn: row.rpn,
      mac: row.mac,
      rssiDbm: row.rssiDbm,
      handsetName: handset?.name || null,
      extension: handset?.extension || null,
    };
  });
}