mirror of
https://github.com/DSpace/dspace-angular.git
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247 lines
9.8 KiB
TypeScript
247 lines
9.8 KiB
TypeScript
import { ChangeDetectorRef, Component } from '@angular/core';
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import { Item } from '../../../core/shared/item.model';
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import {
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DeleteRelationship,
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FieldUpdate,
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FieldUpdates,
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RelationshipIdentifiable,
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} from '../../../core/data/object-updates/object-updates.reducer';
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import { Observable } from 'rxjs/internal/Observable';
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import { map, startWith, switchMap, take, tap } from 'rxjs/operators';
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import {
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combineLatest as observableCombineLatest,
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of as observableOf,
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zip as observableZip
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} from 'rxjs';
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import { followLink } from '../../../shared/utils/follow-link-config.model';
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import { AbstractItemUpdateComponent } from '../abstract-item-update/abstract-item-update.component';
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import { ItemDataService } from '../../../core/data/item-data.service';
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import { ObjectUpdatesService } from '../../../core/data/object-updates/object-updates.service';
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import { ActivatedRoute, Router } from '@angular/router';
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import { NotificationsService } from '../../../shared/notifications/notifications.service';
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import { TranslateService } from '@ngx-translate/core';
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import { RelationshipService } from '../../../core/data/relationship.service';
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import { RemoteData } from '../../../core/data/remote-data';
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import { ObjectCacheService } from '../../../core/cache/object-cache.service';
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import { getFirstSucceededRemoteData, getRemoteDataPayload } from '../../../core/shared/operators';
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import { RequestService } from '../../../core/data/request.service';
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import { RelationshipType } from '../../../core/shared/item-relationships/relationship-type.model';
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import { ItemType } from '../../../core/shared/item-relationships/item-type.model';
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import { EntityTypeService } from '../../../core/data/entity-type.service';
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import { FieldChangeType } from '../../../core/data/object-updates/object-updates.actions';
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import { Relationship } from '../../../core/shared/item-relationships/relationship.model';
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import { NoContent } from '../../../core/shared/NoContent.model';
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import { hasValue } from '../../../shared/empty.util';
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import { RelationshipTypeService } from '../../../core/data/relationship-type.service';
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import { PaginatedList } from '../../../core/data/paginated-list.model';
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@Component({
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selector: 'ds-item-relationships',
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styleUrls: ['./item-relationships.component.scss'],
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templateUrl: './item-relationships.component.html',
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})
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/**
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* Component for displaying an item's relationships edit page
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*/
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export class ItemRelationshipsComponent extends AbstractItemUpdateComponent {
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/**
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* The allowed relationship types for this type of item as an observable list
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*/
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relationshipTypes$: Observable<RelationshipType[]>;
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/**
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* The item's entity type as an observable
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*/
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entityType$: Observable<ItemType>;
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constructor(
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public itemService: ItemDataService,
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public objectUpdatesService: ObjectUpdatesService,
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public router: Router,
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public notificationsService: NotificationsService,
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public translateService: TranslateService,
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public route: ActivatedRoute,
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public relationshipService: RelationshipService,
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public objectCache: ObjectCacheService,
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public requestService: RequestService,
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public entityTypeService: EntityTypeService,
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protected relationshipTypeService: RelationshipTypeService,
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public cdr: ChangeDetectorRef,
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) {
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super(itemService, objectUpdatesService, router, notificationsService, translateService, route);
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}
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/**
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* Initialize the values and updates of the current item's relationship fields
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*/
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public initializeUpdates(): void {
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const label = this.item.firstMetadataValue('dspace.entity.type');
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if (label !== undefined) {
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// this.relationshipTypes$ = this.relationshipTypeService.searchByEntityType(label)
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// .pipe(
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// map((relationship:any) => relationship.page),
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// tap(res => console.log(res))
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// );
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this.entityType$ = this.entityTypeService.getEntityTypeByLabel(label).pipe(
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getFirstSucceededRemoteData(),
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getRemoteDataPayload(),
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);
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this.relationshipTypes$ = this.entityType$.pipe(
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switchMap((entityType) =>
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this.entityTypeService.getEntityTypeRelationships(
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entityType.id,
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true,
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true,
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followLink('leftType'),
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followLink('rightType'))
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.pipe(
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getFirstSucceededRemoteData(),
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getRemoteDataPayload(),
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map((relationshipTypes) => relationshipTypes.page),
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tap((res)=> console.log(res))
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)
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),
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);
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} else {
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this.entityType$ = observableOf(undefined);
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}
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}
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/**
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* Initialize the prefix for notification messages
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*/
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public initializeNotificationsPrefix(): void {
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this.notificationsPrefix = 'item.edit.relationships.notifications.';
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}
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/**
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* Resolve the currently selected related items back to relationships and send a delete request for each of the relationships found
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* Make sure the lists are refreshed afterwards and notifications are sent for success and errors
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*/
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public submit(): void {
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// Get all the relationships that should be removed
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const removedRelationshipIDs$: Observable<DeleteRelationship[]> = this.relationshipService.getItemRelationshipsArray(this.item).pipe(
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startWith([]),
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map((relationships: Relationship[]) => relationships.map((relationship) =>
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Object.assign(new Relationship(), relationship, { uuid: relationship.id })
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)),
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switchMap((relationships: Relationship[]) => {
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return this.objectUpdatesService.getFieldUpdatesExclusive(this.url, relationships) as Observable<FieldUpdates>;
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}),
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map((fieldUpdates: FieldUpdates) =>
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Object.values(fieldUpdates)
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.filter((fieldUpdate: FieldUpdate) => fieldUpdate.changeType === FieldChangeType.REMOVE)
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.map((fieldUpdate: FieldUpdate) => fieldUpdate.field as DeleteRelationship)
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),
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);
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const addRelatedItems$: Observable<RelationshipIdentifiable[]> = this.objectUpdatesService.getFieldUpdates(this.url, []).pipe(
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map((fieldUpdates: FieldUpdates) =>
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Object.values(fieldUpdates)
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.filter((fieldUpdate: FieldUpdate) => hasValue(fieldUpdate))
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.filter((fieldUpdate: FieldUpdate) => fieldUpdate.changeType === FieldChangeType.ADD)
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.map((fieldUpdate: FieldUpdate) => fieldUpdate.field as RelationshipIdentifiable)
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),
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);
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observableCombineLatest(
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removedRelationshipIDs$,
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addRelatedItems$,
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).pipe(
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take(1),
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).subscribe(([removeRelationshipIDs, addRelatedItems]) => {
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const actions = [
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this.deleteRelationships(removeRelationshipIDs),
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this.addRelationships(addRelatedItems),
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];
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actions.forEach((action) =>
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action.subscribe((response) => {
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if (response.length > 0) {
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this.initializeOriginalFields();
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this.cdr.detectChanges();
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this.displayNotifications(response);
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}
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})
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);
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});
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}
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deleteRelationships(deleteRelationshipIDs: DeleteRelationship[]): Observable<RemoteData<NoContent>[]> {
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return observableZip(...deleteRelationshipIDs.map((deleteRelationship) => {
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let copyVirtualMetadata: string;
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if (deleteRelationship.keepLeftVirtualMetadata && deleteRelationship.keepRightVirtualMetadata) {
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copyVirtualMetadata = 'all';
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} else if (deleteRelationship.keepLeftVirtualMetadata) {
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copyVirtualMetadata = 'left';
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} else if (deleteRelationship.keepRightVirtualMetadata) {
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copyVirtualMetadata = 'right';
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} else {
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copyVirtualMetadata = 'none';
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}
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return this.relationshipService.deleteRelationship(deleteRelationship.uuid, copyVirtualMetadata);
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}
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));
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}
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addRelationships(addRelatedItems: RelationshipIdentifiable[]): Observable<RemoteData<Relationship>[]> {
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return observableZip(...addRelatedItems.map((addRelationship) =>
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this.entityType$.pipe(
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switchMap((entityType) => this.entityTypeService.isLeftType(addRelationship.type, entityType)),
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switchMap((isLeftType) => {
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let leftItem: Item;
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let rightItem: Item;
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let leftwardValue: string;
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let rightwardValue: string;
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if (isLeftType) {
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leftItem = this.item;
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rightItem = addRelationship.relatedItem;
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leftwardValue = null;
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rightwardValue = addRelationship.nameVariant;
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} else {
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leftItem = addRelationship.relatedItem;
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rightItem = this.item;
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leftwardValue = addRelationship.nameVariant;
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rightwardValue = null;
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}
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return this.relationshipService.addRelationship(addRelationship.type.id, leftItem, rightItem, leftwardValue, rightwardValue);
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}),
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)
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));
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}
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/**
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* Display notifications
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* - Error notification for each failed response with their message
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* - Success notification in case there's at least one successful response
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* @param responses
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*/
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displayNotifications(responses: RemoteData<NoContent>[]) {
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const failedResponses = responses.filter((response: RemoteData<NoContent>) => response.hasFailed);
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const successfulResponses = responses.filter((response: RemoteData<NoContent>) => response.hasSucceeded);
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failedResponses.forEach((response: RemoteData<NoContent>) => {
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this.notificationsService.error(this.getNotificationTitle('failed'), response.errorMessage);
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});
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if (successfulResponses.length > 0) {
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this.notificationsService.success(this.getNotificationTitle('saved'), this.getNotificationContent('saved'));
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}
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}
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/**
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* Sends all initial values of this item to the object updates service
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*/
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public initializeOriginalFields() {
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return this.relationshipService.getRelatedItems(this.item).pipe(
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take(1),
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).subscribe((items: Item[]) => {
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this.objectUpdatesService.initialize(this.url, items, this.item.lastModified);
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});
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}
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}
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