Limit number of local servers to one, Fixes: #322

src/app/components/servers/add-server-dialog/add-server-dialog.component.ts

@@ -3,6 +3,7 @@ import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
 import { Server } from '../../../models/server';
 import { ElectronService } from 'ngx-electron';
 import { FormGroup, FormControl, Validators } from '@angular/forms';
+import { ServerService } from '../../../services/server.service';
 
 
 @Component({
@@ -27,25 +28,35 @@ export class AddServerDialogComponent implements OnInit {
   constructor(
     public dialogRef: MatDialogRef<AddServerDialogComponent>,
     private electronService: ElectronService,
+    private serverService: ServerService,
     @Inject(MAT_DIALOG_DATA) public data: any,
   ) {}
 
-  getLocations() {
+  async getLocations() {
+    const localServers = await this.numberOfLocalServers();
+
     let locations = [];
-    if(this.electronService.isElectronApp) {
+    if(this.electronService.isElectronApp && localServers === 0) {
       locations.push({ key: 'local', name: 'Local' });
     }
     locations.push({ key: 'remote', name: 'Remote' });
     return locations
   }
 
-  getDefaultLocation() {
-    if(this.electronService.isElectronApp) {
+  
+  async getDefaultLocation() {
+    const localServers = await this.numberOfLocalServers();
+    if(this.electronService.isElectronApp && localServers === 0) {
       return 'local';
     }
     return 'remote';
   }
 
+  async numberOfLocalServers() {
+    const servers = await this.serverService.findAll();
+    return servers.filter((server) => server.location === 'local').length;
+  }
+
   getDefaultHost() {
     return '127.0.0.1';
   }
@@ -62,7 +73,7 @@ export class AddServerDialogComponent implements OnInit {
   }
 
   async ngOnInit() {
-    this.locations = this.getLocations();
+    this.locations = await this.getLocations();
 
     const defaultLocalServerPath = await this.getDefaultLocalServerPath();
 
@@ -105,7 +116,8 @@ export class AddServerDialogComponent implements OnInit {
       })
     });
 
-    this.serverForm.get('location').setValue(this.getDefaultLocation());
+    const defaultLocation = await this.getDefaultLocation();
+    this.serverForm.get('location').setValue(defaultLocation);
     this.serverForm.get('host').setValue(this.getDefaultHost());
     this.serverForm.get('port').setValue(this.getDefaultPort());
     this.serverForm.get('authorization').setValue('none');

src/app/services/server.service.ts

@@ -48,7 +48,7 @@ export class ServerService {
   }
 
   public findAll() {
-    return this.onReady(() => this.indexedDbService.get().getAll(this.tablename));
+    return this.onReady(() => this.indexedDbService.get().getAll(this.tablename)) as Promise<Server[]>;
   }
 
   public delete(server: Server) {