@applicaster/zapp-react-native-utils/reactHooks/player/TVSeekControlller/LongPressSeekController.ts

Applicaster Zapp React Native utilities package

import {
  ISeekController,
  ISeekControllerDelegate,
  SeekIncrementalBaseStrategy,
} from "./ISeekController";
import { SEEK_TYPE } from "../const";
import { log_debug, log_error, log_verbose } from "./TVSeekController";
import { interval, Subscription } from "rxjs";
import { tap } from "rxjs/operators";

interface LongPressConfig {
  TIMER_INTERVAL_MS: number;
}

export class LongPressSeekController implements ISeekController {
  private subscription: Subscription | null = null;
  readonly title = "LongPressSeek";
  constructor(
    private seekControllerDelegate: ISeekControllerDelegate,
    private seekIncrementalStrategy: SeekIncrementalBaseStrategy,
    private config: LongPressConfig
  ) {}

  onStartSeek(seekType: SEEK_TYPE) {
    this.cleanUpSubscription();

    log_debug(`${this.title}: start long press seek type: ${seekType}.`);

    this.seekControllerDelegate.handlePlayerPause();

    this.subscription = interval(this.config.TIMER_INTERVAL_MS)
      .pipe(
        tap(() => {
          this.seekControllerDelegate.handleDelayedSeek(
            this.seekIncrementalStrategy.getSkipTime()
          );

          log_debug(
            `${
              this.title
            }: handle delayed seek type: ${seekType} - multiplier: ${this.seekIncrementalStrategy.getSkipMultiplier()}, currentSkipAmount: ${this.seekIncrementalStrategy.getSkipTime()}.`
          );

          this.seekIncrementalStrategy.increment();
        })
      )
      .subscribe({
        complete: () =>
          log_verbose(`${this.title}: Long press subscription complete`),
        error: (err) =>
          log_error(`${this.title}: Long press subscription error`, err),
      });
  }

  onSeekEnd() {
    this.cleanUpSubscription();
    this.seekControllerDelegate.handleSeekComplete();
  }

  reset() {
    this.seekIncrementalStrategy.reset();
    this.cleanUpSubscription();
  }

  private cleanUpSubscription() {
    if (this.subscription) {
      this.subscription.unsubscribe();
      this.subscription = null;
    }
  }
}