1  import AsyncStorage from '@react-native-async-storage/async-storage';
 2  
 3  interface AniListAuthData {
 4    accessToken: string;
 5    expiresAt: number;
 6    lastUpdated: number;
 7  }
 8  
 9  const AUTH_KEY = 'anilist_auth';
10  
11  const debug = (message: string, data?: any) => {
12    console.log(`[AniList Auth] ${message}`, data || '');
13  };
14  
15  export async function saveAuthData(
16    authData: Omit<AniListAuthData, 'lastUpdated'>
17  ): Promise<void> {
18    try {
19      debug('Saving auth data');
20      const data: AniListAuthData = {
21        ...authData,
22        lastUpdated: Date.now(),
23      };
24      await AsyncStorage.setItem(AUTH_KEY, JSON.stringify(data));
25      debug('Auth data saved successfully');
26    } catch (error) {
27      debug('Error saving auth data:', error);
28      throw error;
29    }
30  }
31  
32  export async function getAuthData(): Promise<AniListAuthData | null> {
33    try {
34      debug('Getting auth data from storage');
35      const authDataString = await AsyncStorage.getItem(AUTH_KEY);
36  
37      if (authDataString) {
38        const authData: AniListAuthData = JSON.parse(authDataString);
39        debug('Auth data found, checking expiration');
40  
41        if (Date.now() < authData.expiresAt) {
42          debug('Auth data valid');
43          return authData;
44        }
45  
46        debug('Auth data expired');
47        await clearAuthData();
48      } else {
49        debug('No auth data found');
50      }
51  
52      return null;
53    } catch (error) {
54      debug('Error getting auth data:', error);
55      return null;
56    }
57  }
58  
59  export async function clearAuthData(): Promise<void> {
60    try {
61      debug('Clearing auth data');
62      await AsyncStorage.removeItem(AUTH_KEY);
63      debug('Auth data cleared successfully');
64    } catch (error) {
65      debug('Error clearing auth data:', error);
66      throw error;
67    }
68  }
69  
70  export async function isAuthenticated(): Promise<boolean> {
71    try {
72      const authData = await getAuthData();
73      return !!authData && Date.now() < authData.expiresAt;
74    } catch (error) {
75      debug('Error checking authentication status:', error);
76      return false;
77    }
78  }