package service;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import bean.Utente;
import dao.UtenteDao;

public class UtenteService {
	
	public static final String SALT = "lol-123";

	public static void main(String[] args) {
	
	}
	
	private static UtenteDao ud = new UtenteDao();
	
	public static boolean registrazione(String nickname, String password) {
		String saltedPassword = SALT + password;
		String hashedPassword = generateHash(saltedPassword);

		return ud.registrazione(nickname, hashedPassword, "utente");
	}
	
	public static boolean registrazione(String nickname, String password, String ruolo) {
		String saltedPassword = SALT + password;
		String hashedPassword = generateHash(saltedPassword);

		return ud.registrazione(nickname, hashedPassword, ruolo);
	}
	
	public static Utente login(String nickname, String password) {
		String saltedPassword = SALT + password;
		String hashedPassword = generateHash(saltedPassword);

		System.out.println("Inserita " + hashedPassword);
		return ud.login(nickname, hashedPassword);
	}
	
	public static String generateHash(String input) {
		StringBuilder hash = new StringBuilder();

		try {
			MessageDigest sha = MessageDigest.getInstance("SHA-1");
			byte[] hashedBytes = sha.digest(input.getBytes());
			char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
					'a', 'b', 'c', 'd', 'e', 'f' };
			for (int idx = 0; idx < hashedBytes.length; ++idx) {
				byte b = hashedBytes[idx];
				hash.append(digits[(b & 0xf0) >> 4]);
				hash.append(digits[b & 0x0f]);
			}
		} catch (NoSuchAlgorithmException e) {
			// handle error here.
		}

		return hash.toString();
	}
	
}