content: /*
   This file is part of the OdinMS Maple Story Server
   Copyright (C) 2008 Patrick Huy <patrick.huy@frz.cc>
   Matthias Butz <matze@odinms.de>
   Jan Christian Meyer <vimes@odinms.de>
  
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Affero General Public License as
   published by the Free Software Foundation version 3 as published by
   the Free Software Foundation. You may not use, modify or distribute
   this program under any other version of the GNU Affero General Public
   License.
  
   This program 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 Affero General Public License for more details.
  
   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package scripting.npc;
  
  import client.MapleCharacter;
  import client.MapleClient;
  
  import java.lang.reflect.UndeclaredThrowableException;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import javax.script.ScriptException;
  
  import jdk.nashorn.api.scripting.NashornScriptEngine;
  import net.server.world.MaplePartyCharacter;
  
  import scripting.AbstractScriptManager;
  import server.MapleItemInformationProvider.ScriptedItem;
  import tools.FilePrinter;
  import tools.MaplePacketCreator;
  
  /**
   *
   * @author Matze
   */
  public class NPCScriptManager extends AbstractScriptManager {
  
      private static NPCScriptManager instance = new NPCScriptManager();
  
      public static NPCScriptManager getInstance() {
          return instance;
      }
  
      private Map<MapleClient, NPCConversationManager> cms = new HashMap<>();
      private Map<MapleClient, NashornScriptEngine> scripts = new HashMap<>();
  
      public boolean isNpcScriptAvailable(MapleClient c, String fileName) {
          NashornScriptEngine iv = null;
          if (fileName != null) {
              iv = getScriptEngine("npc/" + fileName + ".js", c);
          }
  
          return iv != null;
      }
  
      public boolean start(MapleClient c, int npc, MapleCharacter chr) {
          return start(c, npc, -1, chr);
      }
  
      public boolean start(MapleClient c, int npc, int oid, MapleCharacter chr) {
          return start(c, npc, oid, null, chr);
      }
  
      public boolean start(MapleClient c, int npc, String fileName, MapleCharacter chr) {
          return start(c, npc, -1, fileName, chr);
      }
  
      public boolean start(MapleClient c, int npc, int oid, String fileName, MapleCharacter chr) {
          return start(c, npc, oid, fileName, chr, false, "cm");
      }
  
      public boolean start(MapleClient c, ScriptedItem scriptItem, MapleCharacter chr) {
          return start(c, scriptItem.getNpc(), -1, scriptItem.getScript(), chr, true, "im");
      }
  
      public void start(String filename, MapleClient c, int npc, List<MaplePartyCharacter> chrs) {
          try {
              NPCConversationManager cm = new NPCConversationManager(c, npc, chrs, true);
              cm.dispose();
              if (cms.containsKey(c)) {
                  return;
              }
              cms.put(c, cm);
              NashornScriptEngine iv = getScriptEngine("npc/" + filename + ".js", c);
  
              if (iv == null) {
                  c.getPlayer().dropMessage(1, "NPC " + npc + " is uncoded.");
                  cm.dispose();
                  return;
              }
              iv.put("cm", cm);
              scripts.put(c, iv);
              try {
                  iv.invokeFunction("start", chrs);
              } catch (final NoSuchMethodException nsme) {
                  nsme.printStackTrace();
              }
  
          } catch (final UndeclaredThrowableException ute) {
              FilePrinter.printError(FilePrinter.NPC + npc + ".txt", ute);
              dispose(c);
          } catch (final Exception e) {
              FilePrinter.printError(FilePrinter.NPC + npc + ".txt", e);
              dispose(c);
          }
      }
  
      private boolean start(MapleClient c, int npc, int oid, String fileName, MapleCharacter chr, boolean itemScript, String engineName) {
          try {
              NPCConversationManager cm = new NPCConversationManager(c, npc, oid, fileName, itemScript);
              if (cms.containsKey(c)) {
                  dispose(c);
              }
              if (c.canClickNPC()) {
                  cms.put(c, cm);
                  NashornScriptEngine iv = null;
                  if (!itemScript) {
                      if (fileName != null) {
                          iv = getScriptEngine("npc/" + fileName + ".js", c);
                      }
                  } else {
                      if (fileName != null) {     // thanks MiLin for drafting NPC-based item scripts
                          iv = getScriptEngine("item/" + fileName + ".js", c);
                      }
                  }
                  if (iv == null) {
                      iv = getScriptEngine("npc/" + npc + ".js", c);
                      cm.resetItemScript();
                  }
                  if (iv == null) {
                      dispose(c);
                      return false;
                  }
                  iv.put(engineName, cm);
                  scripts.put(c, iv);
                  c.setClickedNPC();
                  try {
                      iv.invokeFunction("start");
                  } catch (final NoSuchMethodException nsme) {
                      try {
                          iv.invokeFunction("start", chr);
                      } catch (final NoSuchMethodException nsma) {
                          nsma.printStackTrace();
                      }
                  }
              } else {
                  c.announce(MaplePacketCreator.enableActions());
              }
              return true;
          } catch (final UndeclaredThrowableException | ScriptException ute) {
              FilePrinter.printError(FilePrinter.NPC + npc + ".txt", ute);
              dispose(c);
  
              return false;
          } catch (final Exception e) {
              FilePrinter.printError(FilePrinter.NPC + npc + ".txt", e);
              dispose(c);
  
              return false;
          }
      }
  
      public void action(MapleClient c, byte mode, byte type, int selection) {
          NashornScriptEngine iv = scripts.get(c);
          if (iv != null) {
              try {
                  c.setClickedNPC();
                  iv.invokeFunction("action", mode, type, selection);
              } catch (ScriptException | NoSuchMethodException t) {
                  if (getCM(c) != null) {
                      FilePrinter.printError(FilePrinter.NPC + getCM(c).getNpc() + ".txt", t);
                  }
                  dispose(c);
              }
          }
      }
  
      public void dispose(NPCConversationManager cm) {
          MapleClient c = cm.getClient();
          c.getPlayer().setCS(false);
          c.getPlayer().setNpcCooldown(System.currentTimeMillis());
          cms.remove(c);
          scripts.remove(c);
  
          String scriptFolder = (cm.isItemScript() ? "item" : "npc");
          if (cm.getScriptName() != null) {
              resetContext(scriptFolder + "/" + cm.getScriptName() + ".js", c);
          } else {
              resetContext(scriptFolder + "/" + cm.getNpc() + ".js", c);
          }
          
          c.getPlayer().flushDelayedUpdateQuests();
      }
  
      public void dispose(MapleClient c) {
          NPCConversationManager cm = cms.get(c);
          if (cm != null) {
              dispose(cm);
          }
      }
  
      public NPCConversationManager getCM(MapleClient c) {
          return cms.get(c);
      }
  
  }
  