history service, mail template improved, general listing entry

bizmatch/src/app/guards/listing-category.guard.ts

@@ -0,0 +1,35 @@
+import { HttpClient } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { ActivatedRouteSnapshot, CanActivate, Router, RouterStateSnapshot, UrlTree } from '@angular/router';
+import { Observable, of } from 'rxjs';
+import { catchError, map } from 'rxjs/operators';
+import { environment } from '../../environments/environment';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class ListingCategoryGuard implements CanActivate {
+  private apiBaseUrl = environment.apiBaseUrl;
+  constructor(private http: HttpClient, private router: Router) {}
+
+  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean | UrlTree> {
+    const id = route.paramMap.get('id');
+    const url = `${this.apiBaseUrl}/bizmatch/listings/undefined/${id}`;
+
+    return this.http.get<any>(url).pipe(
+      map(response => {
+        const category = response.listingsCategory;
+        if (category === 'business') {
+          return this.router.createUrlTree([`/details-business-listing/${id}`]);
+        } else if (category === 'commercialProperty') {
+          return this.router.createUrlTree([`/details-commercial-property-listing/${id}`]);
+        } else {
+          return this.router.createUrlTree(['/not-found']);
+        }
+      }),
+      catchError(() => {
+        return of(this.router.createUrlTree(['/not-found']));
+      }),
+    );
+  }
+}