|
| 1 | +'use client'; |
| 2 | + |
| 3 | +import { authClient } from './auth-client'; |
| 4 | + |
| 5 | +interface TokenInfo { |
| 6 | + token: string; |
| 7 | + expiresAt: number; // Unix timestamp |
| 8 | +} |
| 9 | + |
| 10 | +class JWTManager { |
| 11 | + private refreshTimer: NodeJS.Timeout | null = null; |
| 12 | + private readonly REFRESH_THRESHOLD = 5 * 60 * 1000; // Refresh 5 minutes before expiry |
| 13 | + private readonly STORAGE_KEY = 'bearer_token'; |
| 14 | + private readonly EXPIRY_KEY = 'bearer_token_expiry'; |
| 15 | + |
| 16 | + /** |
| 17 | + * Get the current JWT token, refreshing if needed |
| 18 | + */ |
| 19 | + async getValidToken(): Promise<string | null> { |
| 20 | + try { |
| 21 | + const stored = this.getStoredToken(); |
| 22 | + |
| 23 | + // If no token or expired, get a fresh one |
| 24 | + if (!stored || this.isTokenExpiringSoon(stored.expiresAt)) { |
| 25 | + console.log('🔄 JWT token missing or expiring soon, fetching fresh token...'); |
| 26 | + return await this.refreshToken(); |
| 27 | + } |
| 28 | + |
| 29 | + console.log('✅ Using cached JWT token'); |
| 30 | + return stored.token; |
| 31 | + } catch (error) { |
| 32 | + console.error('❌ Error getting valid JWT token:', error); |
| 33 | + return null; |
| 34 | + } |
| 35 | + } |
| 36 | + |
| 37 | + /** |
| 38 | + * Get a fresh JWT token from Better Auth |
| 39 | + */ |
| 40 | + async refreshToken(): Promise<string | null> { |
| 41 | + try { |
| 42 | + console.log('🔄 Refreshing JWT token...'); |
| 43 | + |
| 44 | + let newToken: string | null = null; |
| 45 | + |
| 46 | + // Try to get JWT from session call |
| 47 | + const sessionResponse = await authClient.getSession({ |
| 48 | + fetchOptions: { |
| 49 | + onSuccess: (ctx) => { |
| 50 | + const jwtToken = ctx.response.headers.get('set-auth-jwt'); |
| 51 | + if (jwtToken) { |
| 52 | + newToken = jwtToken; |
| 53 | + console.log('✅ JWT token refreshed via session'); |
| 54 | + } |
| 55 | + }, |
| 56 | + }, |
| 57 | + }); |
| 58 | + |
| 59 | + // If that didn't work, try the explicit token endpoint |
| 60 | + if (!newToken) { |
| 61 | + try { |
| 62 | + const tokenResponse = await fetch('/api/auth/token', { |
| 63 | + credentials: 'include', |
| 64 | + }); |
| 65 | + |
| 66 | + if (tokenResponse.ok) { |
| 67 | + const tokenData = await tokenResponse.json(); |
| 68 | + newToken = tokenData.token; |
| 69 | + console.log('✅ JWT token refreshed via token endpoint'); |
| 70 | + } |
| 71 | + } catch (error) { |
| 72 | + console.warn('⚠️ Token endpoint failed, using session token'); |
| 73 | + } |
| 74 | + } |
| 75 | + |
| 76 | + if (newToken) { |
| 77 | + this.storeToken(newToken); |
| 78 | + this.scheduleRefresh(newToken); |
| 79 | + return newToken; |
| 80 | + } |
| 81 | + |
| 82 | + console.error('❌ Failed to refresh JWT token'); |
| 83 | + return null; |
| 84 | + } catch (error) { |
| 85 | + console.error('❌ Error refreshing JWT token:', error); |
| 86 | + return null; |
| 87 | + } |
| 88 | + } |
| 89 | + |
| 90 | + /** |
| 91 | + * Store token with expiry information |
| 92 | + */ |
| 93 | + private storeToken(token: string): void { |
| 94 | + try { |
| 95 | + const payload = this.decodeJWTPayload(token); |
| 96 | + const expiresAt = payload.exp * 1000; // Convert to milliseconds |
| 97 | + |
| 98 | + localStorage.setItem(this.STORAGE_KEY, token); |
| 99 | + localStorage.setItem(this.EXPIRY_KEY, expiresAt.toString()); |
| 100 | + |
| 101 | + console.log(`🔐 JWT token stored, expires at: ${new Date(expiresAt).toISOString()}`); |
| 102 | + } catch (error) { |
| 103 | + console.error('❌ Error storing JWT token:', error); |
| 104 | + } |
| 105 | + } |
| 106 | + |
| 107 | + /** |
| 108 | + * Get stored token with expiry info |
| 109 | + */ |
| 110 | + private getStoredToken(): TokenInfo | null { |
| 111 | + try { |
| 112 | + const token = localStorage.getItem(this.STORAGE_KEY); |
| 113 | + const expiryStr = localStorage.getItem(this.EXPIRY_KEY); |
| 114 | + |
| 115 | + if (!token || !expiryStr) return null; |
| 116 | + |
| 117 | + return { |
| 118 | + token, |
| 119 | + expiresAt: parseInt(expiryStr, 10), |
| 120 | + }; |
| 121 | + } catch (error) { |
| 122 | + console.error('❌ Error getting stored token:', error); |
| 123 | + return null; |
| 124 | + } |
| 125 | + } |
| 126 | + |
| 127 | + /** |
| 128 | + * Check if token is expiring soon |
| 129 | + */ |
| 130 | + private isTokenExpiringSoon(expiresAt: number): boolean { |
| 131 | + const now = Date.now(); |
| 132 | + const timeUntilExpiry = expiresAt - now; |
| 133 | + return timeUntilExpiry <= this.REFRESH_THRESHOLD; |
| 134 | + } |
| 135 | + |
| 136 | + /** |
| 137 | + * Decode JWT payload without verification (client-side only) |
| 138 | + */ |
| 139 | + private decodeJWTPayload(token: string): any { |
| 140 | + try { |
| 141 | + const parts = token.split('.'); |
| 142 | + const payload = JSON.parse(atob(parts[1])); |
| 143 | + return payload; |
| 144 | + } catch (error) { |
| 145 | + throw new Error('Invalid JWT token format'); |
| 146 | + } |
| 147 | + } |
| 148 | + |
| 149 | + /** |
| 150 | + * Schedule automatic token refresh |
| 151 | + */ |
| 152 | + private scheduleRefresh(token: string): void { |
| 153 | + try { |
| 154 | + // Clear existing timer |
| 155 | + if (this.refreshTimer) { |
| 156 | + clearTimeout(this.refreshTimer); |
| 157 | + } |
| 158 | + |
| 159 | + const payload = this.decodeJWTPayload(token); |
| 160 | + const expiresAt = payload.exp * 1000; |
| 161 | + const now = Date.now(); |
| 162 | + const refreshIn = Math.max(0, expiresAt - now - this.REFRESH_THRESHOLD); |
| 163 | + |
| 164 | + console.log(`⏰ Scheduling JWT refresh in ${Math.round(refreshIn / 1000 / 60)} minutes`); |
| 165 | + |
| 166 | + this.refreshTimer = setTimeout(async () => { |
| 167 | + console.log('⏰ Auto-refreshing JWT token...'); |
| 168 | + await this.refreshToken(); |
| 169 | + }, refreshIn); |
| 170 | + } catch (error) { |
| 171 | + console.error('❌ Error scheduling token refresh:', error); |
| 172 | + } |
| 173 | + } |
| 174 | + |
| 175 | + /** |
| 176 | + * Initialize the JWT manager (call this once on app start) |
| 177 | + */ |
| 178 | + async initialize(): Promise<void> { |
| 179 | + console.log('🚀 Initializing JWT Manager...'); |
| 180 | + |
| 181 | + // Get a valid token and set up refresh schedule |
| 182 | + const token = await this.getValidToken(); |
| 183 | + |
| 184 | + if (token) { |
| 185 | + this.scheduleRefresh(token); |
| 186 | + } |
| 187 | + } |
| 188 | + |
| 189 | + /** |
| 190 | + * Clean up timers and storage |
| 191 | + */ |
| 192 | + cleanup(): void { |
| 193 | + if (this.refreshTimer) { |
| 194 | + clearTimeout(this.refreshTimer); |
| 195 | + this.refreshTimer = null; |
| 196 | + } |
| 197 | + |
| 198 | + localStorage.removeItem(this.STORAGE_KEY); |
| 199 | + localStorage.removeItem(this.EXPIRY_KEY); |
| 200 | + console.log('🧹 JWT Manager cleaned up'); |
| 201 | + } |
| 202 | + |
| 203 | + /** |
| 204 | + * Force refresh token (useful for testing or manual refresh) |
| 205 | + */ |
| 206 | + async forceRefresh(): Promise<string | null> { |
| 207 | + console.log('🔄 Force refreshing JWT token...'); |
| 208 | + return await this.refreshToken(); |
| 209 | + } |
| 210 | +} |
| 211 | + |
| 212 | +// Export a singleton instance |
| 213 | +export const jwtManager = new JWTManager(); |
| 214 | + |
| 215 | +// Auto-initialize when imported |
| 216 | +if (typeof window !== 'undefined') { |
| 217 | + jwtManager.initialize(); |
| 218 | +} |
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