public class User {

	private static final Pattern VALID_EMAIL_ADDRESS_REGEX =
		    Pattern.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE);
	private static final Pattern VALID_PASSWORD_REGEX =
			Pattern.compile("(?=.*[0-9])(?=.*[A-Z])(?=\\S+$).{8,}");
	// at least one digit,at least one upper case letter, at least 8 characters, no whitespaces

	private String userName;
	private int age;
	private String country;
	private String email;
	private String password;
	private TreeMap<String, Show> myFollowing;

	public User(String userName, int age, String country, String email, String password) {
		this.setName(userName);
		this.setAge(age);
		this.setCountry(country);
		this.setEmail(email);
		this.setPassword(password);
		this.myFollowing = new TreeMap<String, Show>();
	}


	private void setName(String userName) {
		if(isNullOrEmpty(userName)) {
			this.userName = "JhonDoe";
			return;
		}
		this.userName = userName;
	}

	private void setAge(int age) {
		if(age < 0 || age > 100) {
			this.age = 18;
			return;
		}
		this.age = age;
	}

	private void setCountry(String country) {
		if(isNullOrEmpty(country)) {
			this.country = "Unknown";
			return;
		}
		this.country = country;
	}

	private void setEmail(String email) {
		if(!validateEmail(email)) {
			this.email = "johnDoe@abv.bg";
			return;
		}
		this.email = email;
	}

	private void setPassword(String password) {
		if(!validatePassword(password)) {
			System.out.println("Invalid password, valid one will be assigned and send to your email.");
			this.password = "12345678";
			return;
		}
		this.password = password;
	}

	private boolean validateEmail(String email) {
		Matcher matcher = VALID_EMAIL_ADDRESS_REGEX.matcher(email);
        return matcher.find();
	}

	private boolean validatePassword(String password) {
		Matcher matcher = VALID_PASSWORD_REGEX.matcher(password);
		return matcher.find();
	}

	private boolean isNullOrEmpty(String text) {
		return text.isEmpty() || text == null;
	}

}