/*
 * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.traccar.database;

import java.net.SocketAddress;
import java.sql.SQLException;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.jboss.netty.channel.Channel;
import org.traccar.Context;
import org.traccar.Protocol;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Position;

public class ConnectionManager {

    private final Map<Long, ActiveDevice> activeDevices = new HashMap<>();
    private final Map<Long, Position> positions = new HashMap<>();
    private final Map<Long, Set<UpdateListener>> listeners = new HashMap<>();

    public ConnectionManager(DataManager dataManager) {
        if (dataManager != null) {
            try {
                for (Position position : dataManager.getLatestPositions()) {
                    positions.put(position.getDeviceId(), position);
                }
            } catch (SQLException error) {
                Log.warning(error);
            }
        }
    }

    public void addActiveDevice(long deviceId, Protocol protocol, Channel channel, SocketAddress remoteAddress) {
        activeDevices.put(deviceId, new ActiveDevice(deviceId, protocol, channel, remoteAddress));
    }

    public void removeActiveDevice(Channel channel) {
        for (ActiveDevice activeDevice : activeDevices.values()) {
            if (activeDevice.getChannel() == channel) {
                updateDevice(activeDevice.getDeviceId(), Device.STATUS_OFFLINE, new Date());
                activeDevices.remove(activeDevice.getDeviceId());
                break;
            }
        }
    }

    public ActiveDevice getActiveDevice(long deviceId) {
        return activeDevices.get(deviceId);
    }

    public synchronized void updateDevice(long deviceId, String status, Date time) {
        Device device = Context.getIdentityManager().getDeviceById(deviceId);
        device.setStatus(status);
        device.setLastUpdate(time);

        try {
            Context.getDataManager().updateDeviceStatus(device);
        } catch (SQLException error) {
            Log.warning(error);
        }

        if (listeners.containsKey(deviceId)) {
            for (UpdateListener listener : listeners.get(deviceId)) {
                listener.onUpdateDevice(device);
            }
        }
    }

    public synchronized void updatePosition(Position position) {
        long deviceId = position.getDeviceId();
        positions.put(deviceId, position);

        if (listeners.containsKey(deviceId)) {
            for (UpdateListener listener : listeners.get(deviceId)) {
                listener.onUpdatePosition(position);
            }
        }
    }

    public Position getLastPosition(long deviceId) {
        return positions.get(deviceId);
    }

    public synchronized Collection<Position> getInitialState(Collection<Long> devices) {

        List<Position> result = new LinkedList<>();

        for (long device : devices) {
            if (positions.containsKey(device)) {
                result.add(positions.get(device));
            }
        }

        return result;
    }

    public interface UpdateListener {
        void onUpdateDevice(Device device);
        void onUpdatePosition(Position position);
    }

    public void addListener(Collection<Long> devices, UpdateListener listener) {
        for (long deviceId : devices) {
            addListener(deviceId, listener);
        }
    }

    public synchronized void addListener(long deviceId, UpdateListener listener) {
        if (!listeners.containsKey(deviceId)) {
            listeners.put(deviceId, new HashSet<UpdateListener>());
        }
        listeners.get(deviceId).add(listener);
    }

    public void removeListener(Collection<Long> devices, UpdateListener listener) {
        for (long deviceId : devices) {
            removeListener(deviceId, listener);
        }
    }

    public synchronized void removeListener(long deviceId, UpdateListener listener) {
        if (!listeners.containsKey(deviceId)) {
            listeners.put(deviceId, new HashSet<UpdateListener>());
        }
        listeners.get(deviceId).remove(listener);
    }

}

@@ -906,24 +906,63 @@
 a.util.Set;%0A
+import java.util.concurrent.TimeUnit;%0A%0A
 import org.j
@@ -1004,23 +1004,131 @@
 org.
-traccar.Context
+jboss.netty.util.Timeout;%0Aimport org.jboss.netty.util.TimerTask;%0Aimport org.traccar.Context;%0Aimport org.traccar.GlobalTimer
 ;%0Aim
@@ -1284,24 +1284,117 @@
 nManager %7B%0A%0A
+    private static final long DEFAULT_TIMEOUT = 600;%0A%0A    private final long deviceTimeout;%0A%0A
     private 
@@ -1605,64 +1605,224 @@
 ();%0A
-%0A    public ConnectionManager(DataManager dataManager) %7B
+    private final Map%3CLong, Timeout%3E timeouts = new HashMap%3C%3E();%0A%0A    public ConnectionManager(DataManager dataManager) %7B%0A        deviceTimeout = Context.getConfig().getLong(%22status.timeout%22, DEFAULT_TIMEOUT) * 1000;
 %0A   
@@ -2627,17 +2627,11 @@
 E, n
-ew Date()
+ull
 );%0A 
@@ -2891,32 +2891,38 @@
 id updateDevice(
+final 
 long deviceId, S
@@ -3072,35 +3072,667 @@
     
-device.setLastUpdate(time);
+if (time != null) %7B%0A            device.setLastUpdate(time);%0A        %7D%0A%0A        Timeout timeout = timeouts.remove(deviceId);%0A        if (timeout != null) %7B%0A            timeout.cancel();%0A        %7D%0A%0A        if (status.equals(Device.STATUS_ONLINE)) %7B%0A            timeouts.put(deviceId, GlobalTimer.getTimer().newTimeout(new TimerTask() %7B%0A                @Override%0A                public void run(Timeout timeout) throws Exception %7B%0A                    if (!timeout.isCancelled()) %7B%0A                        updateDevice(deviceId, Device.STATUS_UNKNOWN, null);%0A                    %7D%0A                %7D%0A            %7D, deviceTimeout, TimeUnit.MILLISECONDS));%0A        %7D
 %0A%0A  

Implement timeout for device status