#include #include #include #include #include struct UserData { std::string username; std::string email; std::string password; std::string dateOfBirth; struct Address { std::string street; std::string city; std::string country; std::string postalCode; } address; }; struct RegistrationResponse { bool success; std::string message; std::string userId; }; class IDataStore { public: virtual void store(const UserData& userData) = 0; virtual ~IDataStore() = default; }; class UserRegistrationService { private: IDataStore* dataStore; public: UserRegistrationService(IDataStore* dataStore) : dataStore(dataStore) {} RegistrationResponse processUserRegistration(const UserData& userData) { try { // User validation if (userData.username.empty() || userData.username.length() < 3 || userData.username.length() > 20) { return {"Invalid username. Must be between 3 and 20 characters.", false, ""}; } if (userData.email.empty() || userData.email.find('@') == std::string::npos || userData.email.find('.') == std::string::npos) { return {"Invalid email format.", false, ""}; } if (userData.password.empty() || userData.password.length() < 8 || !std::regex_search(userData.password, std::regex("[A-Z]")) || !std::regex_search(userData.password, std::regex("[0-9]")) || !std::regex_search(userData.password, std::regex("[!@#$%^&*]"))) { return {"Password must be at least 8 characters and contain uppercase, number, and special character.", false, ""}; } // Date validation std::tm tm = {}; std::istringstream ss(userData.dateOfBirth); ss >> std::get_time(&tm, "%Y-%m-%d"); if (ss.fail()) { throw std::runtime_error("Date parsing error"); } std::time_t t = std::time(nullptr); std::tm* now = std::localtime(&t); int age = now->tm_year + 1900 - tm.tm_year; if (age < 18 || age > 120) { return {"Invalid date of birth or user must be 18+", false, ""}; } // Address validation if (userData.address.street.empty() || userData.address.street.length() < 5) { return {"Invalid street address", false, ""}; } if (userData.address.city.empty() || userData.address.city.length() < 2) { return {"Invalid city", false, ""}; } if (userData.address.country.empty() || userData.address.country.length() < 2) { return {"Invalid country", false, ""}; } if (userData.address.postalCode.empty() || !std::regex_match(userData.address.postalCode, std::regex("^[A-Z0-9]{3,10}$"))) { return {"Invalid postal code", false, ""}; } // Data transformation std::string userId = "USER_" + std::to_string(std::rand() % 100000000); UserData normalizedData = userData; std::transform(normalizedData.username.begin(), normalizedData.username.end(), normalizedData.username.begin(), ::tolower); std::transform(normalizedData.email.begin(), normalizedData.email.end(), normalizedData.email.begin(), ::tolower); dataStore->store(normalizedData); return {"User registered successfully", true, userId}; } catch (const std::exception& e) { return {"Registration failed: " + std::string(e.what()), false, ""}; } } };