feat: add centers action (assign and unassign staff) (#1091)

Fixes: #1090

src/app/centers/common-resolvers/center-actions.resolver.ts

@@ -0,0 +1,38 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+/** Custom Services */
+import { CentersService } from '../centers.service';
+
+/**
+ * Group Actions data resolver.
+ */
+@Injectable()
+export class CenterActionsResolver implements Resolve<Object> {
+
+  /**
+   * @param {CentersService} centersService Savings service.
+   */
+  constructor(private centersService: CentersService) { }
+
+  /**
+   * Returns the Centers account actions data.
+   * @param {ActivatedRouteSnapshot} route Route Snapshot
+   * @returns {Observable<any>}
+   */
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const actionName = route.paramMap.get('name');
+    const centerId = route.paramMap.get('centerId') || route.parent.parent.paramMap.get('centerId');
+    switch (actionName) {
+      case 'Assign Staff':
+        return this.centersService.getGroupStaffData(centerId);
+      default:
+        return undefined;
+    }
+  }
+
+}