Deleting mail + a bit of cleanup

src/main/java/emu/grasscutter/game/GenshinPlayer.java

@@ -1,5 +1,8 @@
 package emu.grasscutter.game;
 
+import java.time.Instant;
+import java.util.*;
+
 import dev.morphia.annotations.*;
 import emu.grasscutter.GenshinConstants;
 import emu.grasscutter.Grasscutter;
@@ -588,8 +591,9 @@ public class GenshinPlayer {
 		Mail message = getMailById(mailId);
 
 		if(message != null) {
-			this.mail.remove(message);
+			int index = getMailIndex(message);
-			this.save();
+			message.expireTime = (int) Instant.now().getEpochSecond(); // Just set the mail as expired for now. I don't want to implement a counter specifically for an account...
+			this.replaceMailByIndex(index, message);
 			return true;
 		}
 
@@ -604,9 +608,10 @@ public class GenshinPlayer {
 		return this.mail.indexOf(message);
 	}
 
-	public boolean replaceMailByIndex(int mailId, Mail message) {
+	public boolean replaceMailByIndex(int index, Mail message) {
-		if(getMailById(mailId) != null) {
+		if(getMailById(index) != null) {
-			this.mail.set(mailId, message);
+			this.mail.set(index, message);
+			this.save();
 			return true;
 		} else {
 			return false;

src/main/java/emu/grasscutter/game/Mail.java

@@ -25,14 +25,14 @@ public class Mail {
         itemList = new ArrayList<>();
         sendTime = 0;
         expireTime = 0;
-        importance = 1;
+        importance = 0; // Starred mail, 0 = No star, 1 = Star.
         isRead = true;
         isAttachmentGot = true;
-        stateValue = 1;
+        stateValue = 1; // Different mailboxes, 1 = Default, 3 = Gift-box.
     }
 
     public Mail(MailContent mailContent, List<MailItem> itemList, long expireTime) {
-        this(mailContent, itemList, expireTime, 1);
+        this(mailContent, itemList, expireTime, 0);
     }
 
     public Mail(MailContent mailContent, List<MailItem> itemList, long expireTime, int importance) {
@@ -90,19 +90,24 @@ public class Mail {
     public static class MailItem {
         public int itemId;
         public int itemCount;
+        public int itemLevel;
 
         public MailItem() {
             this.itemId = 11101;
             this.itemCount = 1;
+            this.itemLevel = 1;
         }
 
         public MailItem(int itemId) {
             this(itemId, 1);
         }
 
-        public MailItem(int itemId, int itemCount) {
+        public MailItem(int itemId, int itemCount) { this(itemId, itemCount, 1); }
+
+        public MailItem(int itemId, int itemCount, int itemLevel) {
             this.itemId = itemId;
             this.itemCount = itemCount;
+            this.itemLevel = itemLevel;
         }
     }
 }

src/main/java/emu/grasscutter/server/packet/recv/HandlerDelMailReq.java

@@ -0,0 +1,21 @@
+package emu.grasscutter.server.packet.recv;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.DelMailReqOuterClass;
+import emu.grasscutter.net.proto.DeleteFriendReqOuterClass;
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketDelMailRsp;
+
+@Opcodes(PacketOpcodes.DelMailReq)
+public class HandlerDelMailReq extends PacketHandler {
+
+    @Override
+    public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+        DelMailReqOuterClass.DelMailReq req = DelMailReqOuterClass.DelMailReq.parseFrom(payload);
+
+        session.send(new PacketDelMailRsp(session.getPlayer(), req.getMailIdListList()));
+    }
+
+}

src/main/java/emu/grasscutter/server/packet/send/PacketDelMailRsp.java

@@ -0,0 +1,29 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.game.GenshinPlayer;
+import emu.grasscutter.net.packet.GenshinPacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.DelMailRspOuterClass.DelMailRsp;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PacketDelMailRsp  extends GenshinPacket {
+
+    public PacketDelMailRsp(GenshinPlayer player, List<Integer> toDeleteIds) {
+        super(PacketOpcodes.DelMailRsp);
+
+        DelMailRsp.Builder proto = DelMailRsp.newBuilder();
+
+        List<Integer> deletedIds = new ArrayList<>();
+
+        for(int mailId : toDeleteIds) {
+            if(player.deleteMail(mailId)) {
+                deletedIds.add(mailId);
+            }
+        }
+
+        this.setData(proto.build());
+        player.getSession().send(new PacketMailChangeNotify(player, null, deletedIds));
+    }
+}

src/main/java/emu/grasscutter/server/packet/send/PacketGetAllMailRsp.java

@@ -12,6 +12,7 @@ import emu.grasscutter.net.proto.MailDataOuterClass.MailData;
 import emu.grasscutter.net.proto.MailItemOuterClass;
 import emu.grasscutter.net.proto.MailTextContentOuterClass.MailTextContent;
 
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Base64;
 import java.util.List;
@@ -39,6 +40,8 @@ public class PacketGetAllMailRsp extends GenshinPacket {
 
                 for (Mail message : player.getAllMail()) {
                     if(message.stateValue == 1) { // Make sure it isn't a gift
+                        if (message.expireTime < Instant.now().getEpochSecond()) { // Make sure the message isn't expired (The game won't show expired mail, but I don't want to send unnecessary information).
+                            if(mailDataList.size() <= 1000) { // Make sure that there isn't over 1000 messages in the mailbox. (idk what will happen if there is but the game probably won't like it.)
                                 MailTextContent.Builder mailTextContent = MailTextContent.newBuilder();
                                 mailTextContent.setTitle(message.mailContent.title);
                                 mailTextContent.setContent(message.mailContent.content);
@@ -70,9 +73,11 @@ public class PacketGetAllMailRsp extends GenshinPacket {
                                 mailDataList.add(mailData.build());
                             }
                         }
+                    }
+                }
 
                 proto.addAllMailList(mailDataList);
-                proto.setIsTruncated(false); // When enabled this will send a notification to the user that their inbox is full when opening the mailbox.
+                proto.setIsTruncated(mailDataList.size() <= 1000 ? false : true); // When enabled this will send a notification to the user telling them their inbox is full and they should delete old messages when opening the mailbox.
 
                 this.setData(proto.build());
             } else {

src/main/java/emu/grasscutter/server/packet/send/PacketGetMailItemRsp.java

@@ -1,6 +1,5 @@
 package emu.grasscutter.server.packet.send;
 
-import emu.grasscutter.Grasscutter;
 import emu.grasscutter.data.GenshinData;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.game.Mail;
@@ -10,8 +9,6 @@ import emu.grasscutter.net.packet.GenshinPacket;
 import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.EquipParamOuterClass;
 import emu.grasscutter.net.proto.GetMailItemRspOuterClass.GetMailItemRsp;
-import emu.grasscutter.net.proto.ItemParamOuterClass;
-import emu.grasscutter.net.proto.MailItemOuterClass;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -22,9 +19,6 @@ public class PacketGetMailItemRsp  extends GenshinPacket {
     public PacketGetMailItemRsp(GenshinPlayer player, List<Integer> mailList) {
         super(PacketOpcodes.GetMailItemRsp);
 
-        //I'm assuming that this is to receive the attachments on the message.
-        // TODO: This.
-
         List<Mail> claimedMessages = new ArrayList<>();
         List<EquipParamOuterClass.EquipParam> claimedItems = new ArrayList<>();
 
@@ -34,13 +28,7 @@ public class PacketGetMailItemRsp  extends GenshinPacket {
             Mail message = player.getMailById(mailId);
             int messageIndex = player.getMailIndex(message);
 
-            message.isAttachmentGot = true;
-            claimedMessages.add(message);
-
-            player.replaceMailByIndex(messageIndex, message);
-
             for(Mail.MailItem mailItem : message.itemList) {
-                //TODO: Actually give the item
                 EquipParamOuterClass.EquipParam.Builder item = EquipParamOuterClass.EquipParam.newBuilder();
                 item.setItemId(mailItem.itemId);
                 item.setItemNum(mailItem.itemCount);
@@ -51,14 +39,17 @@ public class PacketGetMailItemRsp  extends GenshinPacket {
                 player.getInventory().addItem(genshinItem);
                 player.sendPacket(new PacketItemAddHintNotify(genshinItem, ActionReason.MailAttachment));
             }
+
+            message.isAttachmentGot = true;
+            claimedMessages.add(message);
+
+            player.replaceMailByIndex(messageIndex, message);
         }
 
         proto.addAllMailIdList(claimedMessages.stream().map(Mail::getId).collect(Collectors.toList()));
         proto.addAllItemList(claimedItems);
-        player.save();
 
-        Grasscutter.getLogger().info(Grasscutter.getDispatchServer().getGsonFactory().toJson(proto.build()));
         this.setData(proto.build());
-        player.getSession().send(new PacketMailChangeNotify(player, claimedMessages));
+        player.getSession().send(new PacketMailChangeNotify(player, claimedMessages)); // For some reason you have to also send the MailChangeNotify packet
     }
 }

src/main/java/emu/grasscutter/server/packet/send/PacketMailChangeNotify.java

@@ -18,10 +18,15 @@ public class PacketMailChangeNotify extends GenshinPacket {
     }
 
     public PacketMailChangeNotify(GenshinPlayer player, List<Mail> mailList) {
+        this(player, mailList, null);
+    }
+
+    public PacketMailChangeNotify(GenshinPlayer player, List<Mail> mailList, List<Integer> delMailIdList) {
         super(PacketOpcodes.MailChangeNotify);
 
         MailChangeNotifyOuterClass.MailChangeNotify.Builder proto = MailChangeNotifyOuterClass.MailChangeNotify.newBuilder();
 
+        if (mailList != null) {
             for (Mail message : mailList) {
                 MailTextContentOuterClass.MailTextContent.Builder mailTextContent = MailTextContentOuterClass.MailTextContent.newBuilder();
                 mailTextContent.setTitle(message.mailContent.title);
@@ -52,10 +57,13 @@ public class PacketMailChangeNotify extends GenshinPacket {
                 mailData.setStateValue(message.stateValue);
 
                 proto.addMailList(mailData.build());
+            }
+        }
 
-            Grasscutter.getLogger().info(Grasscutter.getDispatchServer().getGsonFactory().toJson(proto.build()));
+        if(delMailIdList != null) {
+            proto.addAllDelMailIdList(delMailIdList);
+        }
 
         this.setData(proto.build());
     }
 }
-}