[ADF-5158] ECM Version Directive (#5779)

* [ADF-5158] ECM Version Directive

* Update version-compatibility.directive.ts

* Update version-compatibility.directive.ts

* Change name from ecm to acs

* Fix unit tests

* Update docs for Version directive

* Fix unit tests

* Fix unit tests

* Linting

* Update apps-process-cloud.service.spec.ts

* Fix Ecm Service initialization

* Fix unit test

Co-authored-by: Eugenio Romano <eromano@users.noreply.github.com>

lib/core/services/version-compatibility.service.ts

@@ -0,0 +1,53 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Injectable } from '@angular/core';
+import { AlfrescoApiService } from './alfresco-api.service';
+import { filter } from 'rxjs/operators';
+import { DiscoveryApiService } from './discovery-api.service';
+import { VersionModel, EcmProductVersionModel } from '../models/product-version.model';
+import { AuthenticationService } from './authentication.service';
+
+@Injectable({
+    providedIn: 'root'
+})
+export class VersionCompatibilityService {
+    private acsVersion: VersionModel;
+
+    constructor(
+        private alfrescoApiService: AlfrescoApiService,
+        private authService: AuthenticationService,
+        private discoveryApiService: DiscoveryApiService
+    ) {
+        this.alfrescoApiService.alfrescoApiInitialized
+            .pipe(filter(status => status))
+            .subscribe(this.initCompatibilityVersion.bind(this));
+    }
+
+    private initCompatibilityVersion() {
+        if (this.authService.isEcmLoggedIn()) {
+            this.discoveryApiService.getEcmProductInfo().toPromise().then(
+                (acsInfo: EcmProductVersionModel) => {
+                    this.acsVersion = acsInfo.version;
+                });
+        }
+    }
+
+    public getAcsVersion(): VersionModel {
+        return this.acsVersion;
+    }
+}