// src/commands/vcMonitor.js
// Thin handler for /vcMonitor <serialNumber> [start|stop|status] [Full|Limited|...]
// First iteration: on-demand start of packet capture via cloud xAPI ExtendedLogging.

import {
  startPacketCapture,
  stopPacketCapture,
  getExtendedLoggingStatus
} from '../services/vcMonitorService.js';
import { logger } from '../utils/logger.js';

export async function handleVcMonitor(bot, trigger) {
  logger('vc-monitor', 'Handler entered');

  const args = trigger.args || [];
  const query = trigger.query || {};
  const serialNumber = args[0]?.trim() || query.serial || query.serialNumber || query.s || query.serialnum;

  if (!serialNumber) {
    logger('vc-monitor', 'No serial number provided – showing usage', 'warn');

    await bot.say('markdown',
      '**Usage:** `/vcMonitor <serialNumber> [action] [PacketDumpType]`\n\n' +
      'Actions (default = start):\n' +
      '• `start` (or omit) — begin capture\n' +
      '• `stop` — stop the current extended logging session\n' +
      '• `status` — show current Logging.ExtendedLogging.Mode + PacketDump\n\n' +
      'PacketDumpType (only for start):\n' +
      '• `Full` — everything including RTP media (~3 min)\n' +
      '• `Limited` — non-RTP/signaling only (~10 min)\n' +
      '• `FullRotate` — rolling capture (last ~1h worth)\n\n' +
      'Examples:\n' +
      '• `/vcMonitor FOC2419NTN2` — start Full capture (on demand)\n' +
      '• `/vcMonitor FOC2419NTN2 Limited`\n' +
      '• `/vcMonitor FOC2419NTN2 stop`\n' +
      '• `/vcMonitor FOC2419NTN2 status`\n\n' +
      '**After capture:** Download the full log bundle from Control Hub (Issues & Diagnostics → System Logs). The .pcap files are inside the bundle.'
    );
    return;
  }

  // Parse action + optional dump type
  let action = (args[1] || query.action || 'start').toLowerCase().trim();
  let dumpType = args[2] || query.type || query.packetDump || query.dump || 'Full';

  // Convenience: allow `/vcMonitor SERIAL Full` to mean start Full
  if (['full', 'limited', 'fullrotate', 'none'].includes(action)) {
    dumpType = action;
    action = 'start';
  }

  logger('vc-monitor', `Command for ${serialNumber}: action=${action} dumpType=${dumpType}`);

  try {
    if (action === 'start' || action === 'begin' || action === 'capture') {
      await startPacketCapture(bot, serialNumber, dumpType);
    } else if (action === 'stop' || action === 'end') {
      await stopPacketCapture(bot, serialNumber);
    } else if (action === 'status' || action === 'show' || action === 'state') {
      await getExtendedLoggingStatus(bot, serialNumber);
    } else {
      await bot.say('markdown',
        `Unknown action "${action}". Supported: start, stop, status.\n\n` +
        `Example: \`/vcMonitor ${serialNumber} start Full\``
      );
    }
  } catch (error) {
    // Service already sent user-facing error + logged. Just make sure we don't crash the handler.
    logger('vc-monitor', `Handler caught error for ${serialNumber}/${action}: ${error.message}`, 'error');
  }
}