import {Injectable} from '@angular/core';
import {ShowDataService} from './show-data.service';
import {Show} from './show';
import {Observable} from 'rxjs';
import {UserService} from '../../../services/user/user.service';
import {map, switchMap} from 'rxjs/operators';
import {User} from '../../../services/user/user';

@Injectable({
  providedIn: 'root',
})
export class ShowService {
  public static SHOW_TYPE = ['service-worship', 'service-praise', 'home-group-big', 'home-group', 'prayer-group', 'teens-group', 'kids-group', 'misc-public', 'misc-private'];
  public static SHOW_TYPE_PUBLIC = ['service-worship', 'service-praise', 'home-group-big', 'teens-group', 'kids-group', 'misc-public'];
  public static SHOW_TYPE_PRIVATE = ['home-group', 'prayer-group', 'misc-private'];
  private user: User | null = null;

  public constructor(
    private showDataService: ShowDataService,
    private userService: UserService
  ) {
    userService.user$.subscribe(_ => (this.user = _));
  }

  public read$ = (showId: string): Observable<Show | null> => this.showDataService.read$(showId);

  public list$(publishedOnly = false): Observable<Show[]> {
    return this.userService.user$.pipe(
      switchMap(
        () => this.showDataService.list$,
        (user: User | null, shows: Show[]) => ({user, shows})
      ),
      map(s =>
        s.shows
          .sort((a, b) => a.date.toMillis() - b.date.toMillis())
          .filter(_ => !_.archived)
          .filter(show => show.published || (show.owner === s.user?.id && !publishedOnly))
      )
    );
  }

  public update$ = async (showId: string, data: Partial<Show>): Promise<void> => this.showDataService.update(showId, data);

  public async new$(data: Partial<Show>): Promise<string | null> {
    if (!data.showType || !this.user) return null;
    const calculatedData: Partial<Show> = {
      ...data,
      owner: this.user.id,
      order: [],
      public: ShowService.SHOW_TYPE_PUBLIC.indexOf(data.showType) !== -1,
    };
    return await this.showDataService.add(calculatedData);
  }
}