import * as plugins from './smartuniverse.plugins';
import { UniverseChannel } from './smartuniverse.classes.universechannel';
import { ClientUniverseChannel } from './smartuniverse.classes.clientuniversechannel';
import { ReactionResult } from './smartuniverse.classes.reactionresult';
import { UniverseMessage } from './smartuniverse.classes.universemessage';
import { ClientUniverseMessage } from './smartuniverse.classes.clientuniversemessage';

export interface IReactionRequestConstructorOptions<
  T extends plugins.typedrequestInterfaces.ITypedRequest
> {
  method: T['method'];
}

export interface ICombinatorPayload<T extends plugins.typedrequestInterfaces.ITypedRequest> {
  /**
   * needed for tying responses to requests
   */
  id: string;
  typedRequestPayload: {
    method: T['method'];
    request: T['request'];
    response: T['response'];
  };
}

export class ReactionRequest<T extends plugins.typedrequestInterfaces.ITypedRequest> {
  public method: T['method'];

  constructor(optionsArg: IReactionRequestConstructorOptions<T>) {
    this.method = optionsArg.method;
  }

  public async fire(
    channelsArg: Array<UniverseChannel | ClientUniverseChannel>,
    requestDataArg: T['request'],
    timeoutMillisArg = 5000
  ) {
    const subscriptionMap = new plugins.lik.ObjectMap<plugins.smartrx.rxjs.Subscription>();
    const reactionResult = new ReactionResult<T>();
    const requestId = plugins.smartunique.shortId();
    for (const channel of channelsArg) {
      subscriptionMap.add(
        channel.subscribe(
          (
            messageArg:
              | UniverseMessage<ICombinatorPayload<T>>
              | ClientUniverseMessage<ICombinatorPayload<T>>
          ) => {
            if (
              messageArg.messageText === 'reactionResponse' &&
              messageArg.payload.typedRequestPayload.method === this.method
            ) {
              const payload: ICombinatorPayload<T> = messageArg.payload;
              if (payload.id !== requestId) {
                return;
              }
              reactionResult.pushReactionResponse(payload.typedRequestPayload.response);
            }
          }
        )
      );
      const payload: ICombinatorPayload<T> = {
        id: requestId,
        typedRequestPayload: {
          method: this.method,
          request: requestDataArg,
          response: null
        }
      };
      channel.sendMessage({
        messageText: 'reactionRequest',
        payload
      });
    }
    plugins.smartdelay.delayFor(timeoutMillisArg).then(async () => {
      await subscriptionMap.forEach(subscriptionArg => {
        subscriptionArg.unsubscribe();
      });
      reactionResult.complete();
    });
    return reactionResult;
  }
}