source: trunk/src/org/expeditee/auth/tags/AuthenticationTag.java@ 1368

package org.expeditee.auth.tags;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;

import org.expeditee.items.Text;

public enum AuthenticationTag {
        Username ("txtUsername", System.getProperty("user.name")), 
        Password ("txtPassword", System.getProperty("user.password")), 
        PasswordAgain ("txtPasswordAgain", System.getProperty("user.password.again")), 
        NewPassword ("txtNewPassword", System.getProperty("user.new.password")), 
        NewPasswordAgain ("txtNewPasswordAgain", System.getProperty("user.new.password.again")), 
        Email ("txtEmail", System.getProperty("user.email")), 
        EmailAgain ("txtEmailAgain", System.getProperty("user.email.again")),
        TrustedUserOne ("txtTrustedUserOne", System.getProperty("user.colleague.one")), 
        TrustedUserTwo ("txtTrustedUserTwo", System.getProperty("user.colleague.two")), 
        Frameset ("txtFrameset", System.getProperty("user.toshare.frameset")), 
        IntergalacticNumber ("txtIntergalacticNumber", System.getProperty("user.intergalacticnumber")), 
        PasswordSliceOne ("txtPasswordPieceOne", System.getProperty("user.password.piece.one")), 
        PasswordSliceTwo ("txtPasswordPieceTwo", System.getProperty("user.password.piece.two")); 
        
        public String val;
        public String def;

        private AuthenticationTag(String tag, String def) {
                this.val = tag;
                this.def = def;         
        }
        
        public static Optional<Map<AuthenticationTag, String>> fetchUserData(Collection<Text> from, boolean useDefaults, AuthenticationTag... tags) {
                final Map<AuthenticationTag, String> fetchedData = new HashMap<AuthenticationTag, String>();
                
                for (AuthenticationTag tag: tags) {
                        for (Text canditate: from) {
                                // use the canditate if it exists
                                if (canditate.hasData(tag.val)) {
                                        if (tag.val.equals("txtUsername")) {
                                                fetchedData.put(tag, canditate.getText().toLowerCase());
                                        } else {
                                                fetchedData.put(tag, canditate.getText());
                                        }
                                        break;
                                }
                                // otherwise try use the default
                                String property = tag.def;
                                if (property != null && !property.isEmpty()) { 
                                        fetchedData.put(tag, useDefaults ? property : null); 
                                }
                        }
                }
                
                if (fetchedData.entrySet().size() == tags.length) {
                        return Optional.of(fetchedData);
                } else { 
                        return Optional.empty();
                }
        }
}