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

Fixes: #1090

src/app/centers/centers-view/center-actions/center-assign-staff/center-assign-staff.component.ts

@@ -0,0 +1,69 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormGroup, FormBuilder } from '@angular/forms';
+import { ActivatedRoute, Router } from '@angular/router';
+
+/** Custom Services */
+import { CentersService } from 'app/centers/centers.service';
+
+/**
+ * Centers Assign Staff Component
+ */
+@Component({
+  selector: 'mifosx-center-assign-staff',
+  templateUrl: './center-assign-staff.component.html',
+  styleUrls: ['./center-assign-staff.component.scss']
+})
+export class CenterAssignStaffComponent implements OnInit {
+
+  /** Center Assign Staff form. */
+  centerAssignStaffForm: FormGroup;
+  /** Field Officer Data */
+  staffData: any;
+  /** Center Data */
+  centerData: any;
+
+  /**
+   * Fetches Center Action Data from `resolve`
+   * @param {FormBuilder} formBuilder Form Builder
+   * @param {SavingsService} savingsService Savings Service
+   * @param {ActivatedRoute} route Activated Route
+   * @param {Router} router Router
+   */
+  constructor(private formBuilder: FormBuilder,
+              private centersService: CentersService,
+              private route: ActivatedRoute,
+              private router: Router) {
+    this.route.data.subscribe((data: { centersActionData: any }) => {
+      this.centerData = data.centersActionData;
+    });
+  }
+
+  /**
+   * Creates the center assign staff form.
+   */
+  ngOnInit() {
+    this.staffData = this.centerData.staffOptions;
+    this.createCenterAssignStaffForm();
+  }
+
+  /**
+   * Creates the center assign staff form.
+   */
+  createCenterAssignStaffForm() {
+    this.centerAssignStaffForm = this.formBuilder.group({
+      'staffId': ['']
+    });
+  }
+
+  /**
+   * Submits the form and assigns staff for the center.
+   */
+  submit() {
+    this.centersService.executeGroupActionCommand(this.centerData.id, 'assignStaff', this.centerAssignStaffForm.value)
+      .subscribe(() => {
+        this.router.navigate(['../../'], { relativeTo: this.route });
+      });
+  }
+
+}