import { NativeEventEmitter, NativeModules } from 'react-native';
import type { EmitterSubscription } from 'react-native';

// Resolve BBPlayerModule for event emitter
let BBPlayerModule: any = null;
try {
  BBPlayerModule = require('./specs/NativeBBPlayerModule').default;
} catch {
  // TurboModule not available
}
if (!BBPlayerModule) {
  BBPlayerModule = NativeModules.BBPlayerModule;
}

const eventEmitter = BBPlayerModule
  ? new NativeEventEmitter(BBPlayerModule)
  : new NativeEventEmitter();

export interface CastSessionEvent {
  connected: boolean;
  deviceName?: string;
  error?: string;
}

/**
 * Listen for Chromecast session state changes (connect/disconnect).
 * Emitted by the native module when Google Cast session starts, resumes, ends, or suspends.
 * Returns an EmitterSubscription — call .remove() to unsubscribe.
 *
 * @example
 * ```ts
 * const sub = addCastSessionListener((event) => {
 *   console.log(event.connected ? `Connected to ${event.deviceName}` : 'Disconnected');
 * });
 * // Later: sub.remove();
 * ```
 */
export function addCastSessionListener(
  callback: (event: CastSessionEvent) => void,
): EmitterSubscription {
  return eventEmitter.addListener('castSessionChanged', callback);
}