use some status information to handle errors better

src/types/index.ts

@@ -1,9 +1,20 @@
+export enum BackendReturnStatus {
+  Ok,
+  Unauthorized,
+  Failure,
+};
+
 export interface AirportOverview {
   icao: string;
   name: string;
   flightInformationRegion: string;
 };
 
+export interface AirportOverviewBackend {
+  status: BackendReturnStatus;
+  airports: AirportOverview[];
+};
+
 export interface User {
   vatsimId: string;
   fullName: string;
@@ -12,6 +23,19 @@ export interface User {
   airportConfigurationAccess: string[];
 };
 
+export const DefaultUser: User = {
+  vatsimId: '',
+  fullName: '',
+  radarScopeKey: '',
+  administrator: false,
+  airportConfigurationAccess: [],
+};
+
+export interface UserBackend {
+  status: BackendReturnStatus;
+  user: User;
+}
+
 export interface IAuthState {
   valid: boolean,
   user: User,