PrismStorage

import Prism

// Sync stores
let defaults = PrismDefaultsStore()
let keychain = PrismKeychainStore(service: "MyApp")

// Async (actor-based) stores
let disk = PrismDiskStore(directory: .caches)
let memory = PrismMemoryStore(maxEntries: 500)

public protocol PrismStorageProtocol: Sendable {
    func save<T: Codable & Sendable>(_ value: T, forKey key: String) throws
    func load<T: Codable & Sendable>(_ type: T.Type, forKey key: String) throws -> T?
    func delete(forKey key: String) throws
    func exists(forKey key: String) throws -> Bool
    func clear() throws
    func keys() throws -> [String]
}

// Save and load any Codable
let store = PrismDefaultsStore()
try store.save(user, forKey: "currentUser")
let user = try store.load(User.self, forKey: "currentUser")

// Encrypted storage
let encrypted = PrismEncryptedStore(wrapping: store, key: symmetricKey)
try encrypted.save(secret, forKey: "token") // AES-GCM transparent

// Multi-tier cache (memory → disk)
let composite = PrismCompositeStore(stores: [memory, disk])
let value = try composite.load(Config.self, forKey: "settings")
// Cache miss on memory? Falls through to disk, populates memory