// Path: bluez-dbus/src/main/java/com/github/hypfvieh/DbusHelper.java
// public final class DbusHelper {
// 
//     private static final Logger LOGGER = LoggerFactory.getLogger(DbusHelper.class);
// 
//     private DbusHelper() {
// 
//     }
// 
//     /**
//      * Find all &lt;node&gt;-Elements in DBUS Introspection XML and extracts the value of the 'name' attribute.
//      * @param _connection the dbus connection
//      * @param _path dbus-path-to-introspect
//      * @return Set of String, maybe empty but never null
//      */
//     public static Set<String> findNodes(DBusConnection _connection, String _path) {
//         Set<String> foundNodes = new LinkedHashSet<>();
//         if (_connection == null || _path == null || _path.trim().isEmpty()) {
//             return foundNodes;
//         }
//         try {
//             Introspectable remoteObject = _connection.getRemoteObject("org.bluez", _path, Introspectable.class);
//             String introspect = remoteObject.Introspect();
//             Document doc = XmlHelper.parseXmlString(introspect);
//             NodeList nodes = XmlHelper.applyXpathExpressionToDocument("/node/node", doc);
//             for (int i = 0; i < nodes.getLength(); i++) {
//                 if (nodes.item(i) instanceof Element) {
//                     Element elem = (Element) nodes.item(i);
//                     foundNodes.add(elem.getAttribute("name"));
//                 }
//             }
//             return foundNodes;
//         } catch (DBusException _ex) {
//             LOGGER.info("Exception while search DBus.", _ex);
//         } catch (IOException _ex) {
//             LOGGER.error("Exception while applying Xpath to introspection result", _ex);
//         } catch (Exception _ex) {
//             LOGGER.error("Critical error while reading DBUS response (maybe no bluetoothd daemon running?)", _ex);
//         }
//         return foundNodes;
//     }
// 
//     /**
//      * Creates an java object from a bluez dbus response.
//      * @param _connection Dbus connection to use
//      * @param _path dbus request path
//      * @param _objClass interface class to use
//      * @param <T> some class/interface implementing/extending {@link DBusInterface}
//      * @return the created object or null on error
//      */
//     public static <T extends DBusInterface> T getRemoteObject(DBusConnection _connection, String _path, Class<T> _objClass) {
//         try {
//             return _connection.getRemoteObject("org.bluez", _path, _objClass);
//         } catch (DBusException _ex) {
//             LOGGER.warn("Error while converting dbus response to object.", _ex);
//         }
//         return null;
//     }
// 
// }


import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Set;
import org.freedesktop.dbus.connections.impl.DBusConnection;
import org.freedesktop.dbus.exceptions.DBusException;
import org.freedesktop.dbus.exceptions.DBusExecutionException;
import org.freedesktop.dbus.interfaces.DBusInterface;
import org.freedesktop.dbus.interfaces.Properties;
import org.freedesktop.dbus.types.Variant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.github.hypfvieh.DbusHelper;
package com.github.hypfvieh.bluetooth.wrapper;




/**
 * Base class of all bluetooth wrapper object classes.
 *
 * @author hypfvieh
 *
 */
public abstract class AbstractBluetoothObject {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private final BluetoothDeviceType bluetoothType;
    private DBusConnection dbusConnection;
    private final String dbusPath;

    public AbstractBluetoothObject(BluetoothDeviceType _bluetoothType, DBusConnection _dbusConnection, String _dbusPath) {
        bluetoothType = _bluetoothType;
        dbusConnection = _dbusConnection;
        dbusPath = _dbusPath;
    }

    /**
     * DBus-Interface class used in this wrapper object.
     * @return class which implements the interface
     */
    protected abstract Class<? extends DBusInterface> getInterfaceClass();

    public BluetoothDeviceType getBluetoothType() {
        return bluetoothType;
    }

    public String getDbusPath() {
        return dbusPath;
    }

    public DBusConnection getDbusConnection() {
        return dbusConnection;
    }

    /**
     * Helper to get remote objects from DBus.
     * @param _objectNames Set of object names to retrieve [e.g service0000, service0001]
     * @param _parentPath DBus parent path (objectName will be appended) [e.g. /org/bluez/hci0]
     * @param _type Expected DBusInterface type [e.g. Device1]
     * @param <T> class/interface extending {@link DBusInterface}
     * @return Map of string key and the given interface
     */
    protected <T extends DBusInterface> Map<String, T> getRemoteObjects(Set<String> _objectNames, String _parentPath, Class<T> _type) {
        Map<String, T> map = new LinkedHashMap<>();
        String path = _parentPath;
        // append slash to parent path if missing
        if (!_parentPath.endsWith("/")) {
            path += "/";
        }
        // iterate all object names
        for (String string : _objectNames) {
// Path: bluez-dbus/src/main/java/com/github/hypfvieh/DbusHelper.java
// public final class DbusHelper {
// 
//     private static final Logger LOGGER = LoggerFactory.getLogger(DbusHelper.class);
// 
//     private DbusHelper() {
// 
//     }
// 
//     /**
//      * Find all &lt;node&gt;-Elements in DBUS Introspection XML and extracts the value of the 'name' attribute.
//      * @param _connection the dbus connection
//      * @param _path dbus-path-to-introspect
//      * @return Set of String, maybe empty but never null
//      */
//     public static Set<String> findNodes(DBusConnection _connection, String _path) {
//         Set<String> foundNodes = new LinkedHashSet<>();
//         if (_connection == null || _path == null || _path.trim().isEmpty()) {
//             return foundNodes;
//         }
//         try {
//             Introspectable remoteObject = _connection.getRemoteObject("org.bluez", _path, Introspectable.class);
//             String introspect = remoteObject.Introspect();
//             Document doc = XmlHelper.parseXmlString(introspect);
//             NodeList nodes = XmlHelper.applyXpathExpressionToDocument("/node/node", doc);
//             for (int i = 0; i < nodes.getLength(); i++) {
//                 if (nodes.item(i) instanceof Element) {
//                     Element elem = (Element) nodes.item(i);
//                     foundNodes.add(elem.getAttribute("name"));
//                 }
//             }
//             return foundNodes;
//         } catch (DBusException _ex) {
//             LOGGER.info("Exception while search DBus.", _ex);
//         } catch (IOException _ex) {
//             LOGGER.error("Exception while applying Xpath to introspection result", _ex);
//         } catch (Exception _ex) {
//             LOGGER.error("Critical error while reading DBUS response (maybe no bluetoothd daemon running?)", _ex);
//         }
//         return foundNodes;
//     }
// 
//     /**
//      * Creates an java object from a bluez dbus response.
//      * @param _connection Dbus connection to use
//      * @param _path dbus request path
//      * @param _objClass interface class to use
//      * @param <T> some class/interface implementing/extending {@link DBusInterface}
//      * @return the created object or null on error
//      */
//     public static <T extends DBusInterface> T getRemoteObject(DBusConnection _connection, String _path, Class<T> _objClass) {
//         try {
//             return _connection.getRemoteObject("org.bluez", _path, _objClass);
//         } catch (DBusException _ex) {
//             LOGGER.warn("Error while converting dbus response to object.", _ex);
//         }
//         return null;
//     }
// 
// }


// Path: bluez-dbus/src/main/java/com/github/hypfvieh/bluetooth/wrapper/AbstractBluetoothObject.java
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Set;
import org.freedesktop.dbus.connections.impl.DBusConnection;
import org.freedesktop.dbus.exceptions.DBusException;
import org.freedesktop.dbus.exceptions.DBusExecutionException;
import org.freedesktop.dbus.interfaces.DBusInterface;
import org.freedesktop.dbus.interfaces.Properties;
import org.freedesktop.dbus.types.Variant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.github.hypfvieh.DbusHelper;

package com.github.hypfvieh.bluetooth.wrapper;




/**
 * Base class of all bluetooth wrapper object classes.
 *
 * @author hypfvieh
 *
 */
public abstract class AbstractBluetoothObject {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private final BluetoothDeviceType bluetoothType;
    private DBusConnection dbusConnection;
    private final String dbusPath;

    public AbstractBluetoothObject(BluetoothDeviceType _bluetoothType, DBusConnection _dbusConnection, String _dbusPath) {
        bluetoothType = _bluetoothType;
        dbusConnection = _dbusConnection;
        dbusPath = _dbusPath;
    }

    /**
     * DBus-Interface class used in this wrapper object.
     * @return class which implements the interface
     */
    protected abstract Class<? extends DBusInterface> getInterfaceClass();

    public BluetoothDeviceType getBluetoothType() {
        return bluetoothType;
    }

    public String getDbusPath() {
        return dbusPath;
    }

    public DBusConnection getDbusConnection() {
        return dbusConnection;
    }

    /**
     * Helper to get remote objects from DBus.
     * @param _objectNames Set of object names to retrieve [e.g service0000, service0001]
     * @param _parentPath DBus parent path (objectName will be appended) [e.g. /org/bluez/hci0]
     * @param _type Expected DBusInterface type [e.g. Device1]
     * @param <T> class/interface extending {@link DBusInterface}
     * @return Map of string key and the given interface
     */
    protected <T extends DBusInterface> Map<String, T> getRemoteObjects(Set<String> _objectNames, String _parentPath, Class<T> _type) {
        Map<String, T> map = new LinkedHashMap<>();
        String path = _parentPath;
        // append slash to parent path if missing
        if (!_parentPath.endsWith("/")) {
            path += "/";
        }
        // iterate all object names
        for (String string : _objectNames) {
            T remoteObject = DbusHelper.getRemoteObject(getDbusConnection(), path + string, _type);