import { inject } from '@angular/core'; import { ActivatedRouteSnapshot, ResolveFn, RouterStateSnapshot, } from '@angular/router'; import { Store } from '@ngrx/store'; import { Observable } from 'rxjs'; import { environment } from '../../environments/environment'; import { AppState } from '../app.reducer'; import { ItemDataService } from '../core/data/item-data.service'; import { RemoteData } from '../core/data/remote-data'; import { ResolvedAction } from '../core/resolving/resolver.actions'; import { Item } from '../core/shared/item.model'; import { getFirstCompletedRemoteData } from '../core/shared/operators'; import { followLink, FollowLinkConfig, } from '../shared/utils/follow-link-config.model'; /** * The self links defined in this list are expected to be requested somewhere in the near future * Requesting them as embeds will limit the number of requests */ export function getItemPageLinksToFollow(): FollowLinkConfig<Item>[] { const followLinks: FollowLinkConfig<Item>[] = [ followLink('owningCollection', {}, followLink('parentCommunity', {}, followLink('parentCommunity')), ), followLink('relationships'), followLink('version', {}, followLink('versionhistory')), followLink('thumbnail'), ]; if (environment.item.showAccessStatuses) { followLinks.push(followLink('accessStatus')); } return followLinks; } export const itemResolver: ResolveFn<RemoteData<Item>> = ( route: ActivatedRouteSnapshot, state: RouterStateSnapshot, itemService: ItemDataService = inject(ItemDataService), store: Store<AppState> = inject(Store<AppState>), ): Observable<RemoteData<Item>> => { const itemRD$ = itemService.findById( route.params.id, true, false, ...getItemPageLinksToFollow(), ).pipe( getFirstCompletedRemoteData(), ); itemRD$.subscribe((itemRD: RemoteData<Item>) => { store.dispatch(new ResolvedAction(state.url, itemRD.payload)); }); return itemRD$; };