/**
 * Shared constants used across the bot, integrations, and services.
 */

const STORE_MODES = Object.freeze({
  INFO: 'info', // bare `st <n>` — just the Store header (location + general)
  NETWORK: 'network', // switches, APs, and store server(s)
  POS: 'pos', // store server + registers + mobile registers + printers + payment terminals
  IOS: 'ios', // iOS devices (iPhones)
  PHONE: 'phone', // placeholder — simplified phone-device view (CollabSupport-style)
  AV: 'av', // placeholder — simplified A/V-device view (CollabSupport-style)
});

/**
 * MDM (Workspace ONE) device-name conventions.
 * Devices are classified by substring on UserName or DeviceFriendlyName.
 */
const MDM_DEVICE_TYPES = Object.freeze({
  SERVER: 'SRV',
  MOBILE_REGISTER: 'MR',
  CUSTOMER_DISPLAY: 'CD',
  IPHONE: 'IPH',
});

/**
 * MDM-side AV hardware buckets. Names are matched (case-insensitive) against
 * the device's friendly name. AppleTV is checked first because the others
 * are short substrings that could appear inside an Apple TV's name.
 * Mirrors collabFinder `STRICT_AV_PATTERN` (services/enrichment/filters.js).
 */
const AV_CATEGORIES = Object.freeze({
  APPLE_TV: 'AppleTV',
  VIDEO_WALL: 'VW',
  MUSIC: 'MSC',
  LED: 'LED',
});

const AV_FRIENDLY_NAME_PATTERN = /(VW|MSC|LED|AppleTV)/i;

/**
 * Return the canonical device-name string used to classify an MDM device.
 */
function mdmDeviceName(device) {
  if (!device) return '';
  return (device.UserName || device.DeviceFriendlyName || '').toString();
}

/**
 * Filter MDM devices whose name contains the given marker (SRV/MR/CD/IPH).
 */
function filterMdmByType(devices, marker) {
  if (!Array.isArray(devices) || !marker) return [];
  return devices.filter(d => mdmDeviceName(d).includes(marker));
}

/**
 * Classify an MDM device into one of the AV categories, or null if it is
 * not an AV device. Order of checks matters: AppleTV is most specific, so
 * if a device name accidentally contains both "AppleTV" and one of the
 * short markers, it's still classified as an Apple TV.
 */
function classifyMdmAvDevice(deviceOrName) {
  const name = typeof deviceOrName === 'string' ? deviceOrName : mdmDeviceName(deviceOrName);
  if (!name) return null;

  if (/AppleTV/i.test(name)) return AV_CATEGORIES.APPLE_TV;
  if (/VW/.test(name)) return AV_CATEGORIES.VIDEO_WALL;
  if (/MSC/.test(name)) return AV_CATEGORIES.MUSIC;
  if (/LED/.test(name)) return AV_CATEGORIES.LED;
  return null;
}

module.exports = {
  STORE_MODES,
  MDM_DEVICE_TYPES,
  AV_CATEGORIES,
  AV_FRIENDLY_NAME_PATTERN,
  mdmDeviceName,
  filterMdmByType,
  classifyMdmAvDevice,
};