/**
 * WhatsApp Cloud API channel adapter (v2) — uses Chat SDK bridge.
 * Uses the official Meta WhatsApp Business Cloud API (not Baileys).
 * Self-registers on import.
 */
import { createWhatsAppAdapter } from '@chat-adapter/whatsapp';

import { readEnvFile } from '../env.js';
import { createChatSdkBridge } from './chat-sdk-bridge.js';
import { registerChannelAdapter } from './channel-registry.js';

registerChannelAdapter('whatsapp-cloud', {
  factory: () => {
    const env = readEnvFile([
      'WHATSAPP_ACCESS_TOKEN',
      'WHATSAPP_PHONE_NUMBER_ID',
      'WHATSAPP_APP_SECRET',
      'WHATSAPP_VERIFY_TOKEN',
    ]);
    if (!env.WHATSAPP_ACCESS_TOKEN) return null;
    const whatsappAdapter = createWhatsAppAdapter({
      accessToken: env.WHATSAPP_ACCESS_TOKEN,
      phoneNumberId: env.WHATSAPP_PHONE_NUMBER_ID,
      appSecret: env.WHATSAPP_APP_SECRET,
      verifyToken: env.WHATSAPP_VERIFY_TOKEN,
    });
    return createChatSdkBridge({ adapter: whatsappAdapter, concurrency: 'concurrent', supportsThreads: false });
  },
});