enum GiftContactInputRule {
    case name
    case phoneNumber

    func acceptsEditing(_ text: String) -> Bool {
        switch self {
        case .name:
            return text.count <= 12 && text.unicodeScalars.allSatisfy { scalar in
                switch scalar.value {
                case 0x41...0x5A, 0x61...0x7A,
                     0x1100...0x11FF, 0x3130...0x318F,
                     0xA960...0xA97F, 0xAC00...0xD7A3, 0xD7B0...0xD7FF:
                    return true
                default:
                    return false
                }
            }
        case .phoneNumber:
            return text.count <= 11 && text.unicodeScalars.allSatisfy {
                (0x30...0x39).contains($0.value)
            }
        }
    }

    func acceptsSubmission(_ text: String) -> Bool {
        switch self {
        case .name:
            return !text.isEmpty && acceptsEditing(text)
        case .phoneNumber:
            return text.count == 11 && text.hasPrefix("010") && acceptsEditing(text)
        }
    }
}