import { loadScript } from "../../../helpers/loadScript";
import { JsonChannelSummon, Message, MessageEmitter } from "./type";
// @ts-ignore
import type {CastReceiverContext, CastReceiverOptions} from '@types/chromecast-caf-receiver/cast.framework';

const CHANNEL = 'urn:x-cast:eu.fisoft.battlecaster.custom';

export class ChromecastChannelSummon extends MessageEmitter implements JsonChannelSummon {

  constructor() {
    super();
  }

  log(...data: any[]) {
    // @ts-ignore
    this.emit({ type: 'log', data: data });
  }

  async initialize() {
    this.log('loading cast_receiver_framework.js');
    await loadScript('//www.gstatic.com/cast/sdk/libs/caf_receiver/v3/cast_receiver_framework.js')
    this.initializeCastApi();
  }

  initializeCastApi() {
    this.log('initializeCastApi');
    // @ts-ignore
    const context: CastReceiverContext = cast.framework.CastReceiverContext.getInstance();
    // @ts-ignore
    const options: CastReceiverOptions = new cast.framework.CastReceiverOptions();
    
    context.addCustomMessageListener(CHANNEL, async (event: any) => {
      try {
        this.log('Message received', event.senderId, event.data);
        const msg = event.data;
        if (msg.type === 'hello') {
          this.log('Chromecast summoned', event.senderId);
          this.send({type: 'summoned', name: msg.name ?? 'Chromecast'});
        }
        this.emit(msg);
      } catch (err) {
        this.log('error', err);
      }
    });
    options.customNamespaces = {
      // @ts-ignore
      [CHANNEL]: cast.framework.system.MessageType.JSON,
    }
    options.disableIdleTimeout = true;
    options.maxInactivity = 3600; // Development only
    context.start(options);
  }

  send(data: Message): void {
    try {
      // @ts-ignore
      const context: CastReceiverContext = cast.framework.CastReceiverContext.getInstance()
      context.sendCustomMessage(CHANNEL, undefined, data);
    } catch (err) {
      this.log('send error', err);
    }
  }
}