import type { ThirdPartyTracker } from "./analytics-configuration";

class Tracker {
  static get instance() {
    return (this.#instance ??= new this());
  }

  static #instance: Tracker | undefined;

  #trackers: Promise<ThirdPartyTracker | undefined>[] = [];

  private constructor() {}

  track(eventName: string, payload?: Record<string, unknown>) {
    for (const tracker of this.#trackers) {
      tracker.then((t) => t?.track(eventName, payload));
    }
  }

  registerTracker(tracker: ThirdPartyTracker | Promise<ThirdPartyTracker | undefined> | undefined) {
    if (tracker) {
      this.#trackers.push(Promise.resolve(tracker));
    }
  }
}

export const AnalyticsTracker = Tracker.instance;