Revert "SUPPORT-9170: remove version requests; add health endpoint"

This reverts commit 0e379b30

frontend/src/ts/modules/app/app.module.ts

@@ -14,6 +14,7 @@ import {
 import {AppHeaderComponent} from "./component/app-header.component";
 import {AppFooterComponent} from "./component/app-footer.component";
 import {AccessDeniedComponent} from "./component/access-denied.component";
+import {ApplicationVersionComponent} from "./component/application-version.component";
 import {RouterModule} from "@angular/router";
 import {InternationalPhoneNumberModule} from "ngx-international-phone-number";
 import {AppProgressIndicationComponent} from "./component/app-progress-indication.component";
@@ -30,6 +31,7 @@ registerLocaleData(localeRu);
 export const DIRECTIVES = [
   forwardRef(() => AppHeaderComponent),
   forwardRef(() => AppFooterComponent),
+  forwardRef(() => ApplicationVersionComponent),
   forwardRef(() => LogOutComponent),
   forwardRef(() => AccessDeniedComponent),
   forwardRef(() => AppProgressIndicationComponent),

frontend/src/ts/modules/app/component/application-version.component.ts

@@ -0,0 +1,24 @@
+import {ChangeDetectionStrategy, ChangeDetectorRef, Component, Input} from "@angular/core";
+import {HttpClient} from "@angular/common/http";
+
+@Component({
+  moduleId: module.id,
+  selector: "application-version",
+  templateUrl: "../../../../../src/resources/template/app/component/application_version.html",
+  changeDetection: ChangeDetectionStrategy.OnPush
+})
+export class ApplicationVersionComponent {
+  @Input()
+  public applicationVersion: string;
+
+  constructor(private httpClient: HttpClient, private cd: ChangeDetectorRef) {
+    this.loadAppVersion(); //TODO: check version url
+  }
+
+  private loadAppVersion() {
+    this.httpClient.get("version").toPromise().then((version: any) => {
+      this.applicationVersion = version.number;
+      this.cd.markForCheck();
+    })
+  }
+}

frontend/src/ts/modules/security/authentication.service.ts

@@ -13,7 +13,7 @@ export class AuthenticationService {
   }
 
   checkAuthentication(): Promise<any>{
-    return this.appConfigService.load();
+    return this.appConfigService.load().then(() => this.http.get<any>("version").toPromise())
   }
 
   logout(): Promise<string> {