content: /*
      This file is part of the HeavenMS MapleStory Server
      Copyleft (L) 2016 - 2019 RonanLana
  
      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 server.loot;
  
  import client.MapleCharacter;
  import java.util.LinkedList;
  import java.util.List;
  
  //import server.MapleItemInformationProvider;
  import server.life.MapleMonsterInformationProvider;
  import server.life.MonsterDropEntry;
  import server.quest.MapleQuest;
  
  /**
   *
   * @author Ronan
   */
  public class MapleLootManager {
      
      private static boolean isRelevantDrop(MonsterDropEntry dropEntry, List<MapleCharacter> players, List<MapleLootInventory> playersInv) {
          int qStartAmount = 0, qCompleteAmount = 0;
          MapleQuest quest = MapleQuest.getInstance(dropEntry.questid);
          if (quest != null) {
              qStartAmount = quest.getStartItemAmountNeeded(dropEntry.itemId);
              qCompleteAmount = quest.getCompleteItemAmountNeeded(dropEntry.itemId);
          }
          
          //boolean restricted = MapleItemInformationProvider.getInstance().isPickupRestricted(dropEntry.itemId);
          for (int i = 0; i < players.size(); i++) {
              MapleLootInventory chrInv = playersInv.get(i);
              
              if (dropEntry.questid > 0) {
                  int qItemAmount, chrQuestStatus = players.get(i).getQuestStatus(dropEntry.questid);
                  if (chrQuestStatus == 0) {
                      qItemAmount = qStartAmount;
                  } else if (chrQuestStatus != 1) {
                      continue;
                  } else {
                      qItemAmount = qCompleteAmount;
                  }
                  
                  // thanks kvmba for noticing quest items with no required amount failing to be detected as such
                  
                  int qItemStatus = chrInv.hasItem(dropEntry.itemId, qItemAmount);
                  if (qItemStatus == 2) {
                      continue;
                  } /*else if (restricted && qItemStatus == 1) {  // one-of-a-kind loots should be available everytime, thanks onechord for noticing
                      continue;
                  }*/
              } /*else if (restricted && chrInv.hasItem(dropEntry.itemId, 1) > 0) {   // thanks Conrad, Legalize for noticing eligible loots not being available to drop for non-killer parties
                  continue;
              }*/
              
              return true;
          }
          
          return false;
      }
      
      public static List<MonsterDropEntry> retrieveRelevantDrops(int monsterId, List<MapleCharacter> players) {
          List<MonsterDropEntry> loots = MapleMonsterInformationProvider.getInstance().retrieveEffectiveDrop(monsterId);
          if(loots.isEmpty()) return loots;
          
          List<MapleLootInventory> playersInv = new LinkedList<>();
          for(MapleCharacter chr : players) {
              MapleLootInventory lootInv = new MapleLootInventory(chr);
              playersInv.add(lootInv);
          }
          
          List<MonsterDropEntry> effectiveLoot = new LinkedList<>();
          for(MonsterDropEntry mde : loots) {
              if(isRelevantDrop(mde, players, playersInv)) {
                  effectiveLoot.add(mde);
              }
          }
          
          return effectiveLoot;
      }
      
  }
  