content: package emu.grasscutter.game.mail;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import emu.grasscutter.Grasscutter;
  import emu.grasscutter.database.DatabaseHelper;
  import emu.grasscutter.game.player.BasePlayerManager;
  import emu.grasscutter.game.player.Player;
  import emu.grasscutter.server.event.player.PlayerReceiveMailEvent;
  import emu.grasscutter.server.packet.send.PacketDelMailRsp;
  import emu.grasscutter.server.packet.send.PacketMailChangeNotify;
  
  public class MailHandler extends BasePlayerManager {
      private final List<Mail> mail;
  
      public MailHandler(Player player) {
          super(player);
  
          this.mail = new ArrayList<>();
      }
  
      public List<Mail> getMail() {
          return mail;
      }
  
      // ---------------------MAIL------------------------
  
      public void sendMail(Mail message) {
          // Call mail receive event.
          PlayerReceiveMailEvent event = new PlayerReceiveMailEvent(this.getPlayer(), message); event.call();
          if (event.isCanceled()) return; message = event.getMessage();
  
          message.setOwnerUid(this.getPlayer().getUid());
          message.save();
  
          this.mail.add(message);
  
          Grasscutter.getLogger().debug("Mail sent to user [" + this.getPlayer().getUid()  + ":" + this.getPlayer().getNickname() + "]!");
  
          if (this.getPlayer().isOnline()) {
              this.getPlayer().sendPacket(new PacketMailChangeNotify(this.getPlayer(), message));
          } // TODO: setup a way for the mail notification to show up when someone receives mail when they were offline
      }
  
      public boolean deleteMail(int mailId) {
          Mail message = getMailById(mailId);
  
          if (message != null) {
              this.getMail().remove(mailId);
              message.expireTime = 0;
              message.save();
  
              return true;
          }
  
          return false;
      }
  
      public void deleteMail(List<Integer> mailList) {
          List<Integer> sortedMailList = new ArrayList<>();
          sortedMailList.addAll(mailList);
          Collections.sort(sortedMailList, Collections.reverseOrder());
  
          List<Integer> deleted = new ArrayList<>();
  
          for (int id : sortedMailList) {
              if (this.deleteMail(id)) {
                  deleted.add(id);
              }
          }
  
          player.getSession().send(new PacketDelMailRsp(player, deleted));
          player.getSession().send(new PacketMailChangeNotify(player, null, deleted));
      }
  
      public Mail getMailById(int index) { return this.mail.get(index); }
  
      public int getMailIndex(Mail message) {
          return this.mail.indexOf(message);
      }
  
      public boolean replaceMailByIndex(int index, Mail message) {
          if (getMailById(index) != null) {
              this.mail.set(index, message);
              message.save();
              return true;
          } else {
              return false;
          }
      }
  
      public void loadFromDatabase() {
          List<Mail> mailList = DatabaseHelper.getAllMail(this.getPlayer());
  
          for (Mail mail : mailList) {
              this.getMail().add(mail);
          }
      }
  }
  