Modified edit user guard based on managers

src/app/services/guards/edit-user-guard.service.ts

@@ -1,10 +1,10 @@
 import { Injectable } from '@angular/core';
 import { RouterStateSnapshot, Router, ActivatedRouteSnapshot } from '@angular/router';
 import { UsersService } from '../users.service';
-import { map, catchError } from 'rxjs/operators';
+import { map, catchError, take } from 'rxjs/operators';
 import { AuthService } from '../auth.service';
 import { USER_PERMISSION } from './permissions';
-import { of } from 'rxjs';
+import { of, Observable } from 'rxjs';
 
 @Injectable({
   providedIn: 'root'
@@ -13,16 +13,25 @@ export class EditUserGuard {
 
   constructor(private router : Router, private userService : UsersService, private authService : AuthService) { }
 
-  canActivate(route : ActivatedRouteSnapshot, state : RouterStateSnapshot) {
-    let role = this.authService.userLoggedIn().role.roleString;
+  canActivate(route : ActivatedRouteSnapshot, state : RouterStateSnapshot) : Observable<boolean>{
+    let loggedInUser = this.authService.userLoggedIn();
+    let role = loggedInUser.role.roleString;
+    let userId = loggedInUser.id; 
     let routeId = parseInt(route.params.id, 10);
-    if(!USER_PERMISSION.write.includes(role)) return false;
-    return this.userService.getAll()
-    .pipe(map((users : any) => users.map(user => user.id )), map(users => {
-      if(users.includes(routeId))
+    if(!USER_PERMISSION.write.includes(role) || userId === routeId) return of(false).pipe(take(1));
+    return this.userService.getManagers(routeId)
+    .pipe(
+    take(1),
+    map((users : any) => {
+      let managers = users.map(user => user.id);
+      if(managers.includes(userId))
         return true;
+      else {
+        this.router.navigate(['/dashboard']);
+        return false;  
+      }
     }), catchError(err => {
-      this.router.navigateByUrl('/dashboard');
+      this.router.navigate(['/dashboard']);
       return of(false);
     }));
   }

src/app/services/users.service.ts

@@ -23,6 +23,11 @@ export class UsersService extends DataService{
     return this.http.get(url);
   }
 
+  getManagers(id) {
+    let url = 'http://localhost:8080/users/managers/' + id;
+    return this.http.get(url);
+  }
+
   changePassword(oldPassword, newPassword) {
     return new Promise((resolve, reject) => {
       // POST request to server with email and password