set default in field version (#663)

src/app/core/services/api/api.service.ts

@@ -86,11 +86,11 @@ export class ApiService {
     return this.http.get<DigitaloceanSizes>(url, { headers: this.headers });
   }
 
-  getClusterUpgrades(cluster: string, dc: string): Observable<any[]> {
+  getClusterUpgrades(cluster: string, dc: string): Observable<MasterVersion[]> {
     const url = `${this.restRootV3}/dc/${dc}/cluster/${cluster}/upgrades`;
-    return this.http.get<string[]>(url, { headers: this.headers })
+    return this.http.get<MasterVersion[]>(url, { headers: this.headers })
       .catch(error => {
-        return Observable.of<string[]>([]);
+        return Observable.of<MasterVersion[]>([]);
       });
   }
 

src/app/shared/entity/ClusterEntity.ts

@@ -174,4 +174,5 @@ export class SSHKeyPair {
 export class MasterVersion {
   version: string;
   allowedNodeVersions: string[];
+  default?: boolean;
 }

src/app/wizard/set-cluster-spec/set-cluster-spec.component.html

@@ -33,12 +33,12 @@ <h4>Cluster Specifications</h4>
     <mat-card-content>
       <form [formGroup]="clusterSpecForm">
         <mat-form-field>
-          <mat-select placeholder="Master Version:" formControlName="version">
+          <mat-select placeholder="Master Version (optional):" formControlName="version">
               <mat-option *ngFor="let version of masterVersions" [value]="version.version">
                 {{ version.version }}
               </mat-option>
           </mat-select>
-          <mat-hint>Select the version that should be used for cluster creation. If not specified, the default version will be used.</mat-hint>
+          <mat-hint>Select the version that should be used for cluster creation. Unless otherwise specified, the default version {{defaultVersion}} will be used.</mat-hint>
         </mat-form-field>
       </form>
     </mat-card-content>

src/app/wizard/set-cluster-spec/set-cluster-spec.component.ts

@@ -14,6 +14,7 @@ export class SetClusterSpecComponent implements OnInit, OnDestroy {
   @Input() public cluster: ClusterEntity;
   public clusterSpecForm: FormGroup;
   public masterVersions: MasterVersion[] = [];
+  public defaultVersion: string;
   private subscriptions: Subscription[] = [];
 
   constructor(private nameGenerator: ClusterNameGenerator, private api: ApiService, private wizardService: WizardService) { }
@@ -50,6 +51,12 @@ export class SetClusterSpecComponent implements OnInit, OnDestroy {
   loadMasterVersions() {
     this.subscriptions.push(this.api.getMasterVersions().subscribe(versions => {
       this.masterVersions = versions;
+      for (const i in versions) {
+        if (versions[i].default) {
+          this.defaultVersion = versions[i].version;
+          this.clusterSpecForm.controls.version.setValue(versions[i].version);
+        }
+      }
     }));
   }