package ru.bvn13.encryptedpreferences;

import java.util.prefs.*;

/**
 * Created by bvn13 on 22.06.2017.
 */
public class DelegatedPreferences extends AbstractPreferences
{
    private AbstractPreferences target;
    static private final boolean verbose = false;

    protected DelegatedPreferences( AbstractPreferences parent, String name,
                                    AbstractPreferences target ) {
        super( parent, name );
        this.target = target;
    }

    protected String getSpi( String key ) {
        if (verbose) {
            System.out.println( "DP["+target+"]:getSpi( "+key+" )" );
        }

        return target.get( key, null );
    }

    protected void putSpi( String key, String value ) {
        if (verbose) {
            System.out.println( "DP["+target+"]:putSpi( "+key+", "+value+" )" );
        }

        target.put( key, value );
    }

    protected void removeSpi( String key ) {
        if (verbose) {
            System.out.println( "DP["+target+"]:removeSpi( "+key+" )" );
        }

        target.remove( key );
    }

    protected AbstractPreferences childSpi( String name ) {
        if (verbose) {
            System.out.println( "DP["+target+"]:chlidSpi( "+name+" )" );
        }

        return (AbstractPreferences)target.node( name );
    }

    protected void removeNodeSpi() throws BackingStoreException {
        if (verbose) {
            System.out.println( "DP["+target+"]:removeNode()" );
        }

        target.removeNode();
    }

    protected String[] keysSpi() throws BackingStoreException {
        if (verbose) {
            System.out.println( "DP["+target+"]:keysSpi()" );
        }

        return target.keys();
    }

    protected String[] childrenNamesSpi() throws BackingStoreException {
        if (verbose) {
            System.out.println( "DP["+target+"]:childrenNamesSpi()" );
        }

        return target.childrenNames();
    }

    protected void syncSpi() throws BackingStoreException {
        if (verbose) {
            System.out.println( "DP["+target+"]:sync()" );
        }

        target.sync();
    }


    protected void flushSpi() throws BackingStoreException {
        if (verbose) {
            System.out.println( "DP["+target+"]:flush()" );
        }

        target.flush();
    }
}