import { ChangeDetectorRef, Component, OnDestroy, OnInit } from '@angular/core';
import { DataService } from '@ghostfolio/client/services/data.service';
import { UserService } from '@ghostfolio/client/services/user/user.service';
import { User } from '@ghostfolio/common/interfaces';
import { translate } from '@ghostfolio/ui/i18n';
import { StripeService } from 'ngx-stripe';
import { Subject } from 'rxjs';
import { catchError, switchMap, takeUntil } from 'rxjs/operators';

@Component({
  host: { class: 'page' },
  selector: 'gf-pricing-page',
  styleUrls: ['./pricing-page.scss'],
  templateUrl: './pricing-page.html'
})
export class PricingPageComponent implements OnDestroy, OnInit {
  public baseCurrency: string;
  public coupon: number;
  public couponId: string;
  public importAndExportTooltipBasic = translate(
    'DATA_IMPORT_AND_EXPORT_TOOLTIP_BASIC'
  );
  public importAndExportTooltipOSS = translate(
    'DATA_IMPORT_AND_EXPORT_TOOLTIP_OSS'
  );
  public importAndExportTooltipPremium = translate(
    'DATA_IMPORT_AND_EXPORT_TOOLTIP_PREMIUM'
  );
  public isLoggedIn: boolean;
  public price: number;
  public priceId: string;
  public user: User;

  private unsubscribeSubject = new Subject<void>();

  public constructor(
    private changeDetectorRef: ChangeDetectorRef,
    private dataService: DataService,
    private stripeService: StripeService,
    private userService: UserService
  ) {}

  public ngOnInit() {
    const { baseCurrency, subscriptions } = this.dataService.fetchInfo();
    this.baseCurrency = baseCurrency;

    this.coupon = subscriptions?.default?.coupon;
    this.price = subscriptions?.default?.price;

    this.userService.stateChanged
      .pipe(takeUntil(this.unsubscribeSubject))
      .subscribe((state) => {
        if (state?.user) {
          this.user = state.user;

          this.coupon = subscriptions?.[this.user?.subscription?.offer]?.coupon;
          this.couponId =
            subscriptions?.[this.user.subscription.offer]?.couponId;
          this.price = subscriptions?.[this.user?.subscription?.offer]?.price;
          this.priceId = subscriptions?.[this.user.subscription.offer]?.priceId;

          this.changeDetectorRef.markForCheck();
        }
      });
  }

  public onCheckout() {
    this.dataService
      .createCheckoutSession({ couponId: this.couponId, priceId: this.priceId })
      .pipe(
        switchMap(({ sessionId }: { sessionId: string }) => {
          return this.stripeService.redirectToCheckout({ sessionId });
        }),
        catchError((error) => {
          alert(error.message);
          throw error;
        })
      )
      .subscribe((result) => {
        if (result.error) {
          alert(result.error.message);
        }
      });
  }

  public ngOnDestroy() {
    this.unsubscribeSubject.next();
    this.unsubscribeSubject.complete();
  }
}