69111: Groups admin page, WIP

src/app/+admin/admin-access-control/group-registry/groups-registry.component.ts

@@ -0,0 +1,135 @@
+import { Component } from '@angular/core';
+import { FormBuilder } from '@angular/forms';
+import { TranslateService } from '@ngx-translate/core';
+import { Observable } from 'rxjs';
+import { take } from 'rxjs/operators';
+import { PaginatedList } from '../../../core/data/paginated-list';
+import { RemoteData } from '../../../core/data/remote-data';
+import { EPersonDataService } from '../../../core/eperson/eperson-data.service';
+import { GroupDataService } from '../../../core/eperson/group-data.service';
+import { EPerson } from '../../../core/eperson/models/eperson.model';
+import { Group } from '../../../core/eperson/models/group.model';
+import { hasValue } from '../../../shared/empty.util';
+import { NotificationsService } from '../../../shared/notifications/notifications.service';
+import { PaginationComponentOptions } from '../../../shared/pagination/pagination-component-options.model';
+import { followLink } from '../../../shared/utils/follow-link-config.model';
+
+@Component({
+  selector: 'ds-groups-registry',
+  templateUrl: './groups-registry.component.html',
+})
+/**
+ * A component used for managing all existing groups within the repository.
+ * The admin can create, edit or delete groups here.
+ */
+export class GroupsRegistryComponent {
+
+  messagePrefix = 'admin.access-control.groups.';
+
+  /**
+   * Pagination config used to display the list of groups
+   */
+  config: PaginationComponentOptions = Object.assign(new PaginationComponentOptions(), {
+    id: 'groups-list-pagination',
+    pageSize: 5,
+    currentPage: 1
+  });
+
+  /**
+   * A list of all the current groups within the repository or the result of the search
+   */
+  groups: Observable<RemoteData<PaginatedList<Group>>>;
+
+  // The search form
+  searchForm;
+
+  constructor(private groupService: GroupDataService,
+              private ePersonDataService: EPersonDataService,
+              private translateService: TranslateService,
+              private notificationsService: NotificationsService,
+              private formBuilder: FormBuilder) {
+    this.updateGroups({
+      currentPage: 1,
+      elementsPerPage: this.config.pageSize
+    });
+    this.searchForm = this.formBuilder.group(({
+      query: '',
+    }));
+  }
+
+  /**
+   * Event triggered when the user changes page
+   * @param event
+   */
+  onPageChange(event) {
+    this.updateGroups({
+      currentPage: event,
+      elementsPerPage: this.config.pageSize
+    });
+  }
+
+  /**
+   * Update the list of groups by fetching it from the rest api or cache
+   */
+  private updateGroups(options) {
+    this.groups = this.groupService.getGroups(options, followLink('epersons'));
+  }
+
+  /**
+   * Search in the groups (searches by group name and by uuid exact match)
+   * @param data  Contains query param
+   */
+  search(data: any) {
+    const query: string = data.query;
+    this.groups = this.groupService.searchGroups(query.trim(), {
+      currentPage: 1,
+      elementsPerPage: this.config.pageSize
+    }, followLink('epersons'));
+  }
+
+  /**
+   * Delete Group
+   */
+  deleteGroup(group: Group) {
+    if (hasValue(group.id)) {
+      this.groupService.deleteGroup(group).pipe(take(1)).subscribe((success: boolean) => {
+        if (success) {
+          this.notificationsService.success(this.translateService.get(this.messagePrefix + 'notification.deleted.success', { name: group.name }));
+          this.forceUpdateGroup();
+        } else {
+          this.notificationsService.error(this.translateService.get(this.messagePrefix + 'notification.deleted.failure', { name: group.name }));
+        }
+      })
+    }
+  }
+
+  /**
+   * Force-update the list of groups by first clearing the cache related to groups, then performing a new REST call
+   */
+  public forceUpdateGroup() {
+    this.groupService.clearGroupsRequests();
+    this.search({ query: '' })
+  }
+
+  /**
+   * Get the amount of members (epersons embedded value of a group) //TODO
+   * @param group
+   */
+  getMembers(group: Group): Observable<RemoteData<PaginatedList<EPerson>>> {
+    return this.ePersonDataService.findAllByHref(group._links.epersons.href);
+  }
+
+  /**
+   * Extract optional UUID from a group name => To be resolved to community or collection with link
+   * (Or will be resolved in backend and added to group object, tbd) //TODO
+   * @param groupName
+   */
+  getOptionalComColFromName(groupName: string): string {
+    let optionalComColName = '';
+    const uuidMatches = groupName.match(/[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}/g);
+    if (uuidMatches != null) {
+      optionalComColName = uuidMatches[0];
+    }
+    return optionalComColName;
+  }
+}