// integrations/cisco-mpp-phone/nsJson.js
//
// Parser for /ns.json (network statistics + LLDP/CDP neighbors).

import { coerceRows, fieldsFromRows } from './jsonRows.js';

const ERROR_COUNTER_FIELDS = [
  'RxDropPkts', 'RxUndersizePkts', 'RxOversizePkts', 'RxFragments', 'RxJabbers',
  'RxAlignErrs', 'RxFCSErrs', 'RxSymbolErrs', 'TxDropPkts', 'TxCollisions',
  'TxLateCollisions',
];

/**
 * @param {string|Array} raw
 * @returns {object}
 */
export function parseNsJson(raw) {
  const rows = coerceRows(raw);
  const fields = fieldsFromRows(rows);

  const neighbor = {
    lldpDevice: fields['LLDPNeighborDeviceId'] || null,
    lldpPort: fields['LLDPNeighborPort'] || null,
    lldpIp: fields['LLDPNeighborIP'] || null,
    cdpDevice: fields['CDPNeighborDeviceId'] || null,
    cdpPort: fields['CDPNeighborPort'] || null,
    cdpIp: fields['CDPNeighborIP'] || null,
  };

  const switchDevice = neighbor.lldpDevice || neighbor.cdpDevice || null;
  const switchPort = neighbor.lldpPort || neighbor.cdpPort || null;
  const switchIp = neighbor.lldpIp || neighbor.cdpIp || null;

  const portSpeed = (fields['PortSpeed'] || '').trim() || null;
  const errorCounters = {};
  for (const key of ERROR_COUNTER_FIELDS) {
    const val = fields[key];
    if (val != null && val !== '' && val !== '0') {
      errorCounters[key] = val;
    }
  }

  return {
    fields,
    neighbor,
    switchDevice,
    switchPort,
    switchIp,
    portSpeed,
    errorCounters,
    txFrames: fields['Tx Frames'] || fields['TxtotalGoodPkt'] || null,
    rxFrames: fields['Rx Frames'] || fields['RxtotalPkt'] || null,
  };
}