created auth system

src/app/models/auth.model.ts

@@ -0,0 +1,20 @@
+export interface AuthSession {
+  sessionId: string;
+  telegramUserId: number;
+  username: string | null;
+  displayName: string;
+  active: boolean;
+  expiresAt: string;
+}
+
+export interface TelegramAuthData {
+  id: number;
+  first_name: string;
+  last_name?: string;
+  username?: string;
+  photo_url?: string;
+  auth_date: number;
+  hash: string;
+}
+
+export type AuthStatus = 'unknown' | 'checking' | 'authenticated' | 'expired' | 'unauthenticated';

src/app/models/index.ts

@@ -1,2 +1,4 @@
 export * from './category.model';
 export * from './item.model';
+export * from './location.model';
+export * from './auth.model';

src/app/models/location.model.ts

@@ -0,0 +1,17 @@
+export interface Region {
+  id: string;
+  city: string;
+  country: string;
+  countryCode: string;
+  timezone?: string;
+}
+
+export interface GeoIpResponse {
+  city: string;
+  country: string;
+  countryCode: string;
+  region?: string;
+  timezone?: string;
+  lat?: number;
+  lon?: number;
+}