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package lq;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
import java.util.List;
import javax.jdo.PersistenceManager;
import javax.jdo.Query;
import javax.servlet.http.HttpServletRequest;
public class UserUtil {
public static final String getAuthenticatedEmail() {
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();
if (user == null) {
return null;
}
else {
if (userExists(user.getEmail())) {
return user.getEmail();
}
else {
return null;
}
}
}
public static final boolean isAuthenticated() {
return getAuthenticatedEmail() != null;
}
public static final String getLoginUrl(String requestUrl) {
UserService userService = UserServiceFactory.getUserService();
return userService.createLoginURL(requestUrl);
}
public static final String getLogoutUrl(String requestUrl) {
UserService userService = UserServiceFactory.getUserService();
return userService.createLogoutURL(requestUrl);
}
public static final boolean hasZeroUsers() {
PersistenceManager pm = PMF.get().getPersistenceManager();
try {
Query query = pm.newQuery(Administrator.class);
List<?> results = (List<?>) query.execute();
return results.isEmpty();
}
finally {
pm.close();
}
}
public static final boolean userExists(String email) {
PersistenceManager pm = PMF.get().getPersistenceManager();
try {
Query query = pm.newQuery(Administrator.class);
query.setFilter("email == emailParam");
query.declareParameters("String emailParam");
List<?> results = (List<?>) query.execute(email);
return !results.isEmpty();
}
finally {
pm.close();
}
}
}
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