SessionManager.kt

@Singleton
interface SessionManager {
    suspend fun getCurrentUser(): User?
    suspend fun setUserSession(user: User)
    suspend fun clear()
}

@Singleton
class DefaultSessionManager @Inject constructor(
    // Provided by Dagger-Hilt injection module
    @UserPreferences private val userPreferences: SharedPreferences
) : SessionManager {

    override suspend fun setUserSession(user: User) = withContext(Dispatchers.IO) {
        userPreferences.edit {
            putInt(Keys.ID, user.id)
            putString(Keys.NAME, user.name)
            putString(Keys.EMAIL, user.email)
        }
    }
    
    // ...
    // OTHER FUNCTION IMPLEMENTATIONS
    // ...

    /**
     * Object holding user preference key details
     */
    object UserPreferencesDetails {
        const val NAME = "user_pref"

        object Keys {
            const val ID = "user_id"
            const val NAME = "user_name"
            const val EMAIL = "user_email"
        }
    }
}