import {
  ActiveSubscription,
  ListActiveSubscriptions,
  ListActiveSubscriptionsIsSuccess,
  ListActiveSubscriptionsSuccessResponse,
} from "../api/premium/ListActiveSubscriptions";
import { FakeYouFrontendEnvironment } from "../env/FakeYouFrontendEnvironment";

const FAKEYOU_NAMESPACE = "fakeyou";

export class SessionSubscriptionsWrapper {
  listActiveSubscriptionResponse?: ListActiveSubscriptionsSuccessResponse;

  private constructor(listActiveSubscriptionsSuccessResponse?: ListActiveSubscriptionsSuccessResponse) {
    if (listActiveSubscriptionsSuccessResponse !== undefined) {
        this.listActiveSubscriptionResponse = listActiveSubscriptionsSuccessResponse;
    }
  }

  public static async lookupActiveSubscriptions() : Promise<SessionSubscriptionsWrapper> {
    let response = await ListActiveSubscriptions();
    if (ListActiveSubscriptionsIsSuccess(response)) {
      return new SessionSubscriptionsWrapper(response);
    } else {
      return SessionSubscriptionsWrapper.emptySubscriptions();
    }
  }

  public static emptySubscriptions() : SessionSubscriptionsWrapper {
    return new SessionSubscriptionsWrapper();
  }

  public ttsMaximumLength() : number {
    if (this.hasActiveEliteSubscription()) {
      return 4096;
    } else if (this.hasActiveProSubscription()) {
      return 3072;
    } else if (this.hasActivePlusSubscription()) {
      return 2048;
    } else if (this.hasLoyaltyProgram()) {
      return 2048;
    }
    return 1024;
  }

  public hasFreeOrPaidPremiumFeatures() : boolean {
    return this.hasLoyaltyProgram() || this.hasPaidFeatures();
  }

  public hasLoyaltyProgram() : boolean {
    return !!this.listActiveSubscriptionResponse?.maybe_loyalty_program;
  }

  public hasPaidFeatures() : boolean {
    const subs = this.listActiveSubscriptionResponse?.active_subscriptions || [];
    return subs.length > 0;
  }

  public hasActivePlusSubscription() : boolean {
    let maybePlan = FakeYouFrontendEnvironment.getInstance().useProductionStripePlans() ? 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "fakeyou_plus") : 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "development_fakeyou_plus"); 
    return maybePlan !== undefined;
  }

  public hasActiveProSubscription() : boolean {
    let maybePlan = FakeYouFrontendEnvironment.getInstance().useProductionStripePlans() ? 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "fakeyou_pro") : 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "development_fakeyou_pro"); 
    return maybePlan !== undefined;
  }

  public hasActiveEliteSubscription() : boolean {
    let maybePlan = FakeYouFrontendEnvironment.getInstance().useProductionStripePlans() ? 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "fakeyou_elite") : 
      this.findActiveSubscription(FAKEYOU_NAMESPACE, "development_fakeyou_elite"); 
    return maybePlan !== undefined;
  }

  public getActiveProductSlug(): string | undefined {
    if (this.hasActiveEliteSubscription()) {
      return "fakeyou_elite";
    } else if (this.hasActiveProSubscription()) {
      return "fakeyou_pro";
    } else if (this.hasActivePlusSubscription()) {
      return "fakeyou_plus";
    }
    return undefined;
  }

  private findActiveSubscription(
    namespace: string,
    product_slug: string
  ): ActiveSubscription | undefined {
    const subs =
      this.listActiveSubscriptionResponse?.active_subscriptions || [];
    return subs.find(
      (sub) => sub.namespace === namespace && sub.product_slug === product_slug
    );
  }
}