/*
 *
 * Copyright (c) 2000-2006 by Rodney Kinney
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License (LGPL) as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, copies are available
 * at http://www.opensource.org.
 */
package VASSAL.chat.node;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.IOException;
import java.util.Properties;

import VASSAL.Info;
import VASSAL.build.GameModule;
import VASSAL.chat.CgiServerStatus;
import VASSAL.chat.ChatServerConnection;
import VASSAL.chat.Compressor;
import VASSAL.chat.InviteCommand;
import VASSAL.chat.InviteEncoder;
import VASSAL.chat.MainRoomChecker;
import VASSAL.chat.Player;
import VASSAL.chat.PlayerEncoder;
import VASSAL.chat.PrivateChatEncoder;
import VASSAL.chat.PrivateChatManager;
import VASSAL.chat.Room;
import VASSAL.chat.ServerStatus;
import VASSAL.chat.SimplePlayer;
import VASSAL.chat.SimpleRoom;
import VASSAL.chat.SimpleStatus;
import VASSAL.chat.SoundEncoder;
import VASSAL.chat.SynchEncoder;
import VASSAL.chat.WelcomeMessageServer;
import VASSAL.chat.messageboard.Message;
import VASSAL.chat.messageboard.MessageBoard;
import VASSAL.chat.ui.ChatControlsInitializer;
import VASSAL.chat.ui.ChatServerControls;
import VASSAL.chat.ui.InviteAction;
import VASSAL.chat.ui.KickAction;
import VASSAL.chat.ui.LockableRoomControls;
import VASSAL.chat.ui.LockableRoomTreeRenderer;
import VASSAL.chat.ui.MessageBoardControlsInitializer;
import VASSAL.chat.ui.PrivateMessageAction;
import VASSAL.chat.ui.RoomInteractionControlsInitializer;
import VASSAL.chat.ui.SendSoundAction;
import VASSAL.chat.ui.ServerStatusControlsInitializer;
import VASSAL.chat.ui.ShowProfileAction;
import VASSAL.chat.ui.SimpleStatusControlsInitializer;
import VASSAL.chat.ui.SynchAction;
import VASSAL.command.Command;
import VASSAL.command.CommandEncoder;
import VASSAL.i18n.Resources;
import VASSAL.tools.Base64;
import VASSAL.tools.PropertiesEncoder;
import VASSAL.tools.SequenceEncoder;

/**
 * @author rkinney
 */
public abstract class NodeClient implements ChatServerConnection, PlayerEncoder, ChatControlsInitializer {
  public static final String ZIP_HEADER = "!ZIP!";  //$NON-NLS-1$
  protected PropertyChangeSupport propSupport = new PropertyChangeSupport(this);
  protected NodePlayer me;
  protected SimpleRoom currentRoom;
  protected String defaultRoomName = "Main Room";  //$NON-NLS-1$
  protected NodeRoom[] allRooms = new NodeRoom[0];
  protected MessageBoard msgSvr;
  protected WelcomeMessageServer welcomer;
  protected ServerStatus serverStatus;
  protected String moduleName;
  protected String playerId;
  protected MainRoomChecker checker = new MainRoomChecker();
  protected int compressionLimit = 1000;
  protected CommandEncoder encoder;
  protected MessageBoardControlsInitializer messageBoardControls;
  protected RoomInteractionControlsInitializer roomControls;
  protected ServerStatusControlsInitializer serverStatusControls;
  protected SimpleStatusControlsInitializer playerStatusControls;
  protected SoundEncoder soundEncoder;
  protected PrivateChatEncoder privateChatEncoder;
  protected SynchEncoder synchEncoder;
  protected InviteEncoder inviteEncoder;
  protected PropertyChangeListener nameChangeListener;
  protected PropertyChangeListener profileChangeListener;

  public NodeClient(String moduleName, String playerId, CommandEncoder encoder, MessageBoard msgSvr, WelcomeMessageServer welcomer) {
    this.encoder = encoder;
    this.msgSvr = msgSvr;
    this.welcomer = welcomer;
    this.playerId = playerId;
    this.moduleName = moduleName;
    serverStatus = new CgiServerStatus();
    me = new NodePlayer(playerId);
    messageBoardControls = new MessageBoardControlsInitializer(Resources.getString("Chat.messages"), msgSvr);  //$NON-NLS-1$
    roomControls = new LockableRoomControls(this);
    roomControls.addPlayerActionFactory(ShowProfileAction.factory());
    roomControls.addPlayerActionFactory(SynchAction.factory(this));
    PrivateChatManager privateChatManager = new PrivateChatManager(this);
    roomControls.addPlayerActionFactory(PrivateMessageAction.factory(this, privateChatManager));
    roomControls.addPlayerActionFactory(SendSoundAction.factory(this, Resources.getString("Chat.send_wakeup"), "wakeUpSound", "phone1.wav")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    roomControls.addPlayerActionFactory(InviteAction.factory(this));
    roomControls.addPlayerActionFactory(KickAction.factory(this));
    serverStatusControls = new ServerStatusControlsInitializer(serverStatus);
    playerStatusControls = new SimpleStatusControlsInitializer(this);
    synchEncoder = new SynchEncoder(this, this);
    privateChatEncoder = new PrivateChatEncoder(this, privateChatManager);
    soundEncoder = new SoundEncoder();
    inviteEncoder = new InviteEncoder(this);
    nameChangeListener = new PropertyChangeListener() {
      public void propertyChange(PropertyChangeEvent evt) {
        SimplePlayer p = (SimplePlayer) getUserInfo();
        p.setName((String) evt.getNewValue());
        setUserInfo(p);
      }
    };
    profileChangeListener = new PropertyChangeListener() {
      public void propertyChange(PropertyChangeEvent evt) {
        SimplePlayer p = (SimplePlayer) getUserInfo();
        SimpleStatus s = (SimpleStatus) p.getStatus();
        s = new SimpleStatus(s.isLooking(), s.isAway(), (String) evt.getNewValue(), s.getClient(), s.getIp(), s.getModuleVersion(), s.getCrc());
        p.setStatus(s);
        setUserInfo(p);
      }
    };
  }

  public void setConnected(boolean connect) {
    if (connect) {
      if (!isConnected()) {
        try {
          NodePlayer oldPlayer = me;
          me = new NodePlayer(playerId);
          setUserInfo(oldPlayer);
          initializeConnection();
          Command welcomeMessage = welcomer.getWelcomeMessage();
          if (welcomeMessage != null) {
            welcomeMessage.execute();
          }
          registerNewConnection();
        }
        // FIXME: review error message
        catch (IOException e) {
          propSupport.firePropertyChange(STATUS, null, Resources.getString("Chat.unable_to_establish", e.getMessage()));  //$NON-NLS-1$
        }
      }
    }
    else {
      if (isConnected()) {
        closeConnection();
      }
      currentRoom = null;
      allRooms = new NodeRoom[0];
    }
    propSupport.firePropertyChange(CONNECTED, null, isConnected() ? Boolean.TRUE : Boolean.FALSE);
  }

  protected void registerNewConnection() {
    String path = new SequenceEncoder(moduleName, '/').append(defaultRoomName).getValue();
    send(Protocol.encodeRegisterCommand(me.getId(), path, new PropertiesEncoder(me.toProperties()).getStringValue()));
    if (GameModule.getGameModule() != null) {
      String username = (String) GameModule.getGameModule().getPrefs().getValue("Login");  //$NON-NLS-1$
      if (username != null) {
        send(Protocol.encodeLoginCommand(username));
      }
    }
  }

  protected abstract void closeConnection();

  protected abstract void initializeConnection() throws IOException;

  public abstract void send(String command);

  public void setDefaultRoomName(String defaultRoomName) {
    this.defaultRoomName = defaultRoomName;
  }

  public String getDefaultRoomName() {
    return defaultRoomName;
  }
  
  protected void sendStats() {
    if (isConnected()) {
      send(Protocol.encodeStatsCommand(new PropertiesEncoder(me.toProperties()).getStringValue()));
    }
  }

  public void sendToOthers(Command c) {
    sendToOthers(encoder.encode(c));
  }

  public void sendToAll(String msg) {
    if (currentRoom != null) {
      String path = new SequenceEncoder(moduleName, '/').append(currentRoom.getName()).getValue();
      forward(path, msg);
    }
  }

  public void forward(String receipientPath, String msg) {
    if (isConnected() && currentRoom != null && msg != null) {
      msg = checker.filter(msg, defaultRoomName, currentRoom.getName());
      if (msg.length() > compressionLimit) {
        try {
          msg = ZIP_HEADER + Base64.encodeBytes(Compressor.compress(msg.getBytes("UTF-8")), Base64.DONT_BREAK_LINES);  //$NON-NLS-1$
        }
        // FIXME: review error message
        catch (IOException e) {
          e.printStackTrace();
        }
      }
      send(Protocol.encodeForwardCommand(receipientPath, msg));
    }
  }

  public void sendToOthers(String msg) {
    if (currentRoom != null) {
      String path = new SequenceEncoder(moduleName, '/').append(currentRoom.getName()).append("~" + me.getId()).getValue();  //$NON-NLS-1$
      forward(path, msg);
    }
  }

  public void sendTo(Player recipient, Command c) {
    String path = new SequenceEncoder(moduleName, '/').append("*").append(((NodePlayer) recipient).getId()).getValue();  //$NON-NLS-1$
    forward(path, encoder.encode(c));
  }

  public void kick(Player kickee) {
    send(Protocol.encodeKickCommand(kickee.getId()));
  }
  
  /**
   * Send Invitation to another player to join the current room
   * 
   * @param invitee Player to invite
   */
  public void sendInvite(Player invitee) {
    sendTo(invitee, new InviteCommand(me.getName(), me.getId(), getRoom().getName()));
  }
  
  /**
   * Process an invitation request from a player to join a room
   * 
   * @param player Inviting player name
   * @param room Inviting room
   */
  public void doInvite(String playerId, String roomName) {
    for (Room room : getAvailableRooms()) {
      if (room.getName().equals(roomName)) {
        if (room instanceof NodeRoom && ((NodeRoom) room).getOwner().equals(playerId)) {
          setRoom(room, playerId);
          return;
        }      
      }
    }
  }
  
  public Room getRoom() {
    return currentRoom;
  }

  public Room[] getAvailableRooms() {
    return allRooms;
  }

  public void addPropertyChangeListener(String propertyName, PropertyChangeListener l) {
    propSupport.addPropertyChangeListener(propertyName, l);
  }

  public void addPropertyChangeListener(PropertyChangeListener l) {
    propSupport.addPropertyChangeListener(l);
  }

  public Player getUserInfo() {
    return me;
  }

  public NodePlayer getMyInfo() {
    return me;
  }

  public void setUserInfo(Player p) {
    me.setName(p.getName());
    me.setStatus(p.getStatus());
    sendStats();
    propSupport.firePropertyChange(PLAYER_INFO, null, me);
  }

  public void lockRoom(NodeRoom r) {
    if (r.getOwner().equals(me.getId())) {
      r.toggleLock();
      sendRoomInfo(r);
      propSupport.firePropertyChange(AVAILABLE_ROOMS, null, allRooms);
    }
  }

  public void sendRoomInfo(NodeRoom r) {
    Node dummy = new Node(null, r.getName(), new PropertiesEncoder(r.getInfo()).getStringValue());
    if (isConnected()) {
      String msg = Protocol.encodeRoomsInfo(new Node[]{dummy});
      send(msg);
    }
  }

  public void setRoom(Room r) {
    setRoom(r, null);
  }
  
  public void setRoom(Room r, String password) {
    if (isConnected()) {
      final String newRoom = r.getName();
      final String newPath = new SequenceEncoder(moduleName, '/').append(newRoom).getValue();
      String msg = Protocol.encodeJoinCommand(newPath, password);
      send(msg);
    }
  }

  public void handleMessageFromServer(String msg) {
    Node n;
    Properties p;
    if ((n = Protocol.decodeListCommand(msg)) != null) {
      Node mod = n.getChild(moduleName);
      if (mod != null) {
        updateRooms(mod);
      }
    }
    else if ((p = Protocol.decodeRoomsInfo(msg)) != null) {
      for (int i = 0; i < allRooms.length; ++i) {
        String infoString = p.getProperty(allRooms[i].getName());
        if (infoString != null && infoString.length() > 0) {
          try {
            Properties info = new PropertiesEncoder(infoString).getProperties();
            allRooms[i].setInfo(info);
          }
          // FIXME: review error message
          catch (IOException e) {
            e.printStackTrace();
          }
        }
      }
      propSupport.firePropertyChange(ROOM, null, currentRoom);
      propSupport.firePropertyChange(AVAILABLE_ROOMS, null, allRooms);
    }
    else if (Protocol.decodeRegisterRequest(msg)) {
      registerNewConnection();
    }
    else {
      if (msg.startsWith(ZIP_HEADER)) {
        try {
          msg = new String(Compressor.decompress(Base64.decode(msg.substring(ZIP_HEADER.length()))), "UTF-8");  //$NON-NLS-1$
        }
        // FIXME: review error message
        catch (IOException e) {
          e.printStackTrace();
        }
      }
      propSupport.firePropertyChange(INCOMING_MSG, null, msg);
    }
  }

  protected void updateRooms(Node module) {
    Node[] roomNodes = module.getChildren();
    NodeRoom[] rooms = new NodeRoom[roomNodes.length];
    int defaultRoomIndex = -1;
    for (int i = 0; i < roomNodes.length; ++i) {
      Node[] playerNodes = roomNodes[i].getChildren();
      NodePlayer[] players = new NodePlayer[playerNodes.length];
      boolean containsMe = false;
      for (int j = 0; j < playerNodes.length; ++j) {
        players[j] = new NodePlayer(playerNodes[j].getId());
        if (players[j].equals(me)) {
          containsMe = true;
        }
        try {
          Properties p = new PropertiesEncoder(playerNodes[j].getInfo()).getProperties();
          players[j].setInfo(p);
        }
        // FIXME: review error message
        catch (IOException e) {
          e.printStackTrace();
        }
      }
      
      rooms[i] = new NodeRoom(roomNodes[i].getId(), players);      
      
      // Lock room to start with. The ROOM_INFO message will unlock
      // any rooms that are not locked. Prevents unwanted clients from
      // connecting while room is in an undefined state.
      if (! rooms[i].getName().equals(defaultRoomName)) {
        rooms[i].lock();
      }
      
      try {
        if (roomNodes[i].getInfo() != null) {
          rooms[i].setInfo(new PropertiesEncoder(roomNodes[i].getInfo()).getProperties());
        }
      }
      // FIXME: review error message
      catch (IOException e) {
        e.printStackTrace();
      }
      if (containsMe) {
        currentRoom = rooms[i];
      }
      if (defaultRoomName.equals(rooms[i].getName())) {
        defaultRoomIndex = i;
      }
    }
    if (defaultRoomIndex < 0) {
      allRooms = new NodeRoom[rooms.length + 1];
      System.arraycopy(rooms, 0, allRooms, 1, rooms.length);
      allRooms[0] = new NodeRoom(defaultRoomName);
    }
    else {
      allRooms = rooms;
      NodeRoom swap = allRooms[0];
      allRooms[0] = allRooms[defaultRoomIndex];
      allRooms[defaultRoomIndex] = swap;
    }
    // Do not fire a PropertyChange request, The server will be following immediately
    // with a Room List refresh which can cause Icons to flash unexpectedly.
    // propSupport.firePropertyChange(ROOM, null, currentRoom);
    // propSupport.firePropertyChange(AVAILABLE_ROOMS, null, allRooms);
  }

  public MessageBoard getMessageServer() {
    return msgSvr;
  }

  public Message[] getMessages() {
    return msgSvr.getMessages();
  }

  public void postMessage(String msg) {
    msgSvr.postMessage(msg);
  }

  public Player stringToPlayer(String s) {
    NodePlayer p = null;
    try {
      PropertiesEncoder propEncoder = new PropertiesEncoder(s);
      p = new NodePlayer(null);
      p.setInfo(propEncoder.getProperties());
    }
    // FIXME: review error message
    catch (IOException e) {
      e.printStackTrace();
    }
    return p;
  }

  public String playerToString(Player p) {
    Properties props = ((NodePlayer) p).toProperties();
    return new PropertiesEncoder(props).getStringValue();
  }

  public void initializeControls(ChatServerControls controls) {
    playerStatusControls.initializeControls(controls);
    messageBoardControls.initializeControls(controls);
    roomControls.initializeControls(controls);
    serverStatusControls.initializeControls(controls);
    final GameModule g = GameModule.getGameModule();
    g.addCommandEncoder(synchEncoder);
    g.addCommandEncoder(privateChatEncoder);
    g.addCommandEncoder(soundEncoder);
    g.addCommandEncoder(inviteEncoder);
    me.setName((String) g.getPrefs().getValue(GameModule.REAL_NAME));
    g.getPrefs().getOption(GameModule.REAL_NAME).addPropertyChangeListener(nameChangeListener);
    SimpleStatus s = (SimpleStatus) me.getStatus();
    s = new SimpleStatus(
              s.isLooking(), 
              s.isAway(), 
              (String) g.getPrefs().getValue(GameModule.PERSONAL_INFO), 
              Info.getVersion(), 
              s.getIp(), 
              g.getGameVersion() + ((g.getArchiveWriter() == null) ? "" : " (Editing)"), 
              Long.toHexString(g.getCrc()));
    me.setStatus(s);
    g.getPrefs().getOption(GameModule.PERSONAL_INFO).addPropertyChangeListener(profileChangeListener);
    controls.getRoomTree().setCellRenderer(new LockableRoomTreeRenderer());
  }

  public void uninitializeControls(ChatServerControls controls) {
    messageBoardControls.uninitializeControls(controls);
    roomControls.uninitializeControls(controls);
    serverStatusControls.uninitializeControls(controls);
    playerStatusControls.uninitializeControls(controls);
    GameModule.getGameModule().removeCommandEncoder(synchEncoder);
    GameModule.getGameModule().removeCommandEncoder(privateChatEncoder);
    GameModule.getGameModule().removeCommandEncoder(soundEncoder);
    GameModule.getGameModule().removeCommandEncoder(inviteEncoder);
    GameModule.getGameModule().getPrefs().getOption(GameModule.REAL_NAME).removePropertyChangeListener(nameChangeListener);
    GameModule.getGameModule().getPrefs().getOption(GameModule.PERSONAL_INFO).removePropertyChangeListener(profileChangeListener);
  }
}
