|
| 1 | +import { Effect } from 'effect'; |
| 2 | +import { nanoid } from 'nanoid'; |
| 3 | + |
| 4 | +export type SessionData = { |
| 5 | + userId: string; |
| 6 | + createdAt: Date; |
| 7 | + expiresAt: Date; |
| 8 | + data?: Record<string, unknown>; |
| 9 | +}; |
| 10 | + |
| 11 | +export interface SessionStorageApi { |
| 12 | + createSession: (data: SessionData) => Effect.Effect<string, Error, never>; |
| 13 | + getSession: (sessionId: string) => Effect.Effect<SessionData | null, Error, never>; |
| 14 | + deleteSession: (sessionId: string) => Effect.Effect<void, Error, never>; |
| 15 | + updateSession: (sessionId: string, data: SessionData) => Effect.Effect<void, Error, never>; |
| 16 | + refreshSession: (sessionId: string, expiryDate?: Date) => Effect.Effect<void, Error, never>; |
| 17 | + isSessionExpired: (sessionData: SessionData) => boolean; |
| 18 | + cleanupExpiredSessions: () => Effect.Effect<void, never, never>; |
| 19 | +} |
| 20 | + |
| 21 | +export class SessionStorage extends Effect.Service<SessionStorage>()('SessionStorage', { |
| 22 | + sync: () => { |
| 23 | + // In-memory session store |
| 24 | + const _store = new Map<string, SessionData>(); |
| 25 | + |
| 26 | + // Check if a session is expired |
| 27 | + const isSessionExpired = (sessionData: SessionData): boolean => { |
| 28 | + const now = new Date(); |
| 29 | + return sessionData.expiresAt < now; |
| 30 | + }; |
| 31 | + |
| 32 | + return { |
| 33 | + createSession: (data: SessionData) => { |
| 34 | + const sessionId = nanoid(); |
| 35 | + _store.set(sessionId, data); |
| 36 | + return Effect.succeed(data); |
| 37 | + }, |
| 38 | + |
| 39 | + getSession: Effect.fn(function* (sessionId: string) { |
| 40 | + const session = _store.get(sessionId); |
| 41 | + |
| 42 | + if (!session) { |
| 43 | + return null; |
| 44 | + } |
| 45 | + |
| 46 | + // Check if session is expired |
| 47 | + if (isSessionExpired(session)) { |
| 48 | + _store.delete(sessionId); |
| 49 | + return null; |
| 50 | + } |
| 51 | + |
| 52 | + return session; |
| 53 | + }), |
| 54 | + |
| 55 | + deleteSession: Effect.fn(function* (sessionId: string) { |
| 56 | + _store.delete(sessionId); |
| 57 | + return undefined; |
| 58 | + }), |
| 59 | + |
| 60 | + updateSession: Effect.fn(function* (sessionId: string, data: SessionData) { |
| 61 | + if (!_store.has(sessionId)) { |
| 62 | + return new Error('Session not found'); |
| 63 | + } |
| 64 | + _store.set(sessionId, data); |
| 65 | + return data; |
| 66 | + }), |
| 67 | + |
| 68 | + refreshSession: Effect.fn(function* (sessionId: string, expiryDate?: Date) { |
| 69 | + const session = _store.get(sessionId); |
| 70 | + |
| 71 | + if (!session) { |
| 72 | + return Effect.fail(new Error('Session not found')); |
| 73 | + } |
| 74 | + |
| 75 | + if (isSessionExpired(session)) { |
| 76 | + _store.delete(sessionId); |
| 77 | + return new Error('Session has expired'); |
| 78 | + } |
| 79 | + |
| 80 | + // Update expiry date |
| 81 | + const newExpiryDate = expiryDate || new Date(Date.now() + 24 * 60 * 60 * 1000); // Default: 24 hours from now |
| 82 | + session.expiresAt = newExpiryDate; |
| 83 | + _store.set(sessionId, session); |
| 84 | + |
| 85 | + return session.data; |
| 86 | + }), |
| 87 | + |
| 88 | + isSessionExpired, |
| 89 | + |
| 90 | + cleanupExpiredSessions: Effect.fn(function* () { |
| 91 | + for (const [sessionId, session] of _store.entries()) { |
| 92 | + if (isSessionExpired(session)) { |
| 93 | + _store.delete(sessionId); |
| 94 | + } |
| 95 | + } |
| 96 | + return undefined; |
| 97 | + }), |
| 98 | + }; |
| 99 | + }, |
| 100 | +}) {} |
0 commit comments