@objcMembers
class User: Object {
    dynamic var id: String?
    dynamic var name: String?

    override static func primaryKey() -> String? {
        return "id"
    }
}

var user = User()
user.id = UUID().uuidString
user.name = "Kevin"

let realm = try! Realm(configuration: Realm.Configuration(fileURL: URL(fileURLWithPath: RLMRealmPathForFile("user.realm")), schemaVersion: 1, objectTypes: [User.self]))
try! realm.write {
    realm.add(user)
}

UserRealmManager().transaction(writeHandler: { (realm) in
    realm.add(user)
})

UserRealmProxy().append(user)

UserRealmManager().transaction(writeHandler: { (realm) in
    realm.add(user)
})

UserRealmManager().transaction(isSync: false, writeHandler: { (realm) in
    realm.add(user)
})

UserRealmManager().transaction(writeQueue: DispatchQueue(label: "background"), isSync: false, writeHandler: { (realm) in
    realm.add(user)
})

UserRealmManager().transaction(isSync: false, writeHandler: { (realm) in
    realm.add(user)
}) { (realm, error) in
    self.tableView.reloadData()
}

final class UserRealmManager: RealmManageable {

    var isUseInMemory: Bool {
        return false
    }
    var schemaVersion: UInt64 {
        return 1
    }
    var fileName: String {
        return "user"
    }
    var objectTypes: [Object.Type]? {
        return [User.self]
    }

}

struct UserRealmProxy<RealmManager: UserRealmManager>: RealmProxiable {

    var users: RealmQuery<User> {
        return query(sortProperty: "date", ordering: .ascending)
    }

    func append(_ user: User) {
        rm.transaction(writeHandler: { (realm) in
            realm.add(user, update: .all)
        })
    }

    func delete(_ user: User) {
        rm.transaction(writeHandler: { (realm) in
            realm.delete(user)
        })
    }

    func updateName(id: String, name: String, age: Int) {
        guard let user = userFromId(id) else {return}

        rm.transaction(writeHandler: { (realm) in
            user.name = name
            user.age = age
            realm.add(user, update: .all)
        })
    }

    func userFromId(_ id: String) -> User? {
        return query(filter: "id == '\(id)'").results.first
    }

}

var user = User()
user.id = UUID().uuidString
user.name = "Kevin"

UserRealmProxy().append(user)
UserRealmProxy().delete(user)
UserRealmProxy().updateName(id: user.id, name: "Kris")

let users: RealmQuery<User> = UserRealmProxy().users

users.setSection(0)
    .addInsertNotificationBlock(self) { (self, insertions) in
        self.tableView.reloadData()
    }
    .addModificateNotificationBlock(self) { (self, modifications) in
        self.tableView.reloadRows(at: modifications, with: .fade)
    }
    .addDeleteNotificationBlock(self) { (self, deletions) in
        self.tableView.deleteRows(at: deletions, with: .fade)
    }
    .registerNotification()

public func addDeleteNotificationBlock<Object: AnyObject>(_ object: Object, block: @escaping (Object, [IndexPath]) -> Void) -> Self {
    deleteNotificationBlock = { [weak object] (deletions) in
        guard let weakObject = object else {return}

        block(weakObject, deletions)
    }
    
    return self
}