Receiving items in mail

src/main/java/emu/grasscutter/command/commands/SendMailCommand.java

@@ -24,7 +24,7 @@ public class SendMailCommand implements CommandHandler {
             sender = Grasscutter.getGameServer().getPlayerByUid(7006);
         }
         sender.sendMail(new Mail(new Mail.MailContent("Test", "This is a test"),
-                new ArrayList<Mail.MailItem>(){{add(new Mail.MailItem(1062));}},
+                new ArrayList<Mail.MailItem>(){{add(new Mail.MailItem(23411 ));}},
                 Instant.now().getEpochSecond() + 4000));
 
         sender.dropMessage("Check your inbox");

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

@@ -23,7 +23,6 @@ import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.props.PlayerProperty;
 import emu.grasscutter.net.packet.GenshinPacket;
 import emu.grasscutter.net.proto.AbilityInvokeEntryOuterClass.AbilityInvokeEntry;
-import emu.grasscutter.net.proto.BirthdayOuterClass.Birthday;
 import emu.grasscutter.net.proto.CombatInvokeEntryOuterClass.CombatInvokeEntry;
 import emu.grasscutter.net.proto.HeadImageOuterClass.HeadImage;
 import emu.grasscutter.net.proto.InteractTypeOuterClass.InteractType;
@@ -595,16 +594,46 @@ public class GenshinPlayer {
 		this.sendPacket(new PacketPrivateChatNotify(sender.getUid(), this.getUid(), message.toString()));
 	}
 
-	public List<Mail> getMail() { return mail; }
+	// ---------------------MAIL------------------------
 
-	public void sendMail(Mail message) {
+	public List<Mail> getAllMail() { return this.mail; }
 
+	public void sendMail(Mail message) {
 		this.mail.add(message);
 		message._id = this.mail.size() + 1;
 		this.save();
 		this.sendPacket(new PacketMailChangeNotify(this, message));
 	}
 
+	public boolean deleteMail(int mailId) {
+		Mail message = getMailById(mailId);
+
+		if(message != null) {
+			this.mail.remove(message);
+			this.save();
+			return true;
+		}
+
+		return false;
+	}
+
+	public Mail getMailById(int mailId) {
+		return this.mail.stream().filter(message -> message._id == mailId).findFirst().orElse(null);
+	}
+
+	public int getMailIndex(Mail message) {
+		return this.mail.indexOf(message);
+	}
+
+	public boolean replaceMailByIndex(int mailId, Mail message) {
+		if(getMailById(mailId) != null) {
+			this.mail.set(mailId, message);
+			return true;
+		} else {
+			return false;
+		}
+	}
+	
 	public void interactWith(int gadgetEntityId) {
 		GenshinEntity entity = getScene().getEntityById(gadgetEntityId);
 		

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

@@ -55,6 +55,10 @@ public class Mail {
         this.stateValue = state;
     }
 
+    public int getId() {
+        return this._id;
+    }
+
     @Entity
     public static class MailContent {
         public String title;

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

@@ -15,7 +15,6 @@ public class HandlerGetAllMailReq extends PacketHandler {
 
     @Override
     public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
-        Grasscutter.getLogger().info("Mail Req");
         GetAllMailReqOuterClass.GetAllMailReq req = GetAllMailReqOuterClass.GetAllMailReq.parseFrom(payload);
         session.send(new PacketGetAllMailRsp(session.getPlayer(), req.getIsGiftMail()));
     }

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

@@ -6,7 +6,6 @@ import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.GetMailItemReqOuterClass;
 import emu.grasscutter.server.game.GameSession;
-import emu.grasscutter.server.packet.send.PacketGetAllMailRsp;
 import emu.grasscutter.server.packet.send.PacketGetMailItemRsp;
 
 @Opcodes(PacketOpcodes.GetMailItemReq)

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

 package emu.grasscutter.server.packet.send;
 
-import com.google.gson.Gson;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.game.Mail;
 import emu.grasscutter.net.packet.GenshinPacket;
 import emu.grasscutter.net.packet.PacketOpcodes;
-import emu.grasscutter.net.proto.*;
 import emu.grasscutter.net.proto.GetAllMailRspOuterClass.GetAllMailRsp;
+import emu.grasscutter.net.proto.ItemParamOuterClass;
+import emu.grasscutter.net.proto.MailDataOuterClass;
 import emu.grasscutter.net.proto.MailDataOuterClass.MailData;
+import emu.grasscutter.net.proto.MailItemOuterClass;
 import emu.grasscutter.net.proto.MailTextContentOuterClass.MailTextContent;
 
-import javax.swing.*;
 import java.util.ArrayList;
 import java.util.Base64;
 import java.util.List;
@@ -20,7 +20,6 @@ public class PacketGetAllMailRsp extends GenshinPacket {
 
     public PacketGetAllMailRsp(GenshinPlayer player, boolean isGiftMail) {
         super(PacketOpcodes.GetAllMailRsp);
-        Grasscutter.getLogger().info(String.valueOf(isGiftMail));
 
         if (isGiftMail) {
             // TODO: Gift Mail
@@ -34,11 +33,11 @@ public class PacketGetAllMailRsp extends GenshinPacket {
             }
 
         } else {
-            if (player.getMail().size() != 0) { // Make sure the player has mail
+            if (player.getAllMail().size() != 0) { // Make sure the player has mail
                 GetAllMailRsp.Builder proto = GetAllMailRsp.newBuilder();
                 List<MailData> mailDataList = new ArrayList<MailData>();
 
-                for (Mail message : player.getMail()) {
+                for (Mail message : player.getAllMail()) {
                     if(message.stateValue == 1) { //Make sure it isn't a gift
                         MailTextContent.Builder mailTextContent = MailTextContent.newBuilder();
                         mailTextContent.setTitle(message.mailContent.title);
@@ -73,7 +72,7 @@ public class PacketGetAllMailRsp extends GenshinPacket {
                 }
 
                 proto.addAllMailList(mailDataList);
-                proto.setIsTruncated(true);
+                proto.setIsTruncated(false); // When enabled this will send a notification to the user that their inbox is full when opening the mailbox.
 
                 this.setData(proto.build());
             } else {

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

 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;
+import emu.grasscutter.game.inventory.GenshinItem;
+import emu.grasscutter.game.props.ActionReason;
 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;
+import java.util.stream.Collectors;
 
 public class PacketGetMailItemRsp  extends GenshinPacket {
 
@@ -17,15 +25,40 @@ public class PacketGetMailItemRsp  extends GenshinPacket {
         //I'm assuming that this is to receive the attachments on the message.
         // TODO: This.
 
-        //GetMailItemRsp.Builder proto = GetMailItemRsp.newBuilder();
+        List<Mail> claimedMessages = new ArrayList<>();
+        List<EquipParamOuterClass.EquipParam> claimedItems = new ArrayList<>();
 
-        //MailItemOuterClass.MailItem.Builder mailItem = MailItemOuterClass.MailItem.newBuilder();
+        GetMailItemRsp.Builder proto = GetMailItemRsp.newBuilder();
 
-        //ItemParamOuterClass.ItemParam.Builder itemParam = ItemParamOuterClass.ItemParam.newBuilder();
+        for (int mailId : mailList) {
+            Mail message = player.getMailById(mailId);
+            int messageIndex = player.getMailIndex(message);
 
-        //mailItem.setItemParam(itemParam);
+            message.isAttachmentGot = true;
+            claimedMessages.add(message);
 
-        //proto.addAllMailIdList(mailList);
-        //proto.addItemList();
+            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);
+                claimedItems.add(item.build());
+
+                GenshinItem genshinItem = new GenshinItem(GenshinData.getItemDataMap().get(mailItem.itemId));
+                genshinItem.setCount(mailItem.itemCount);
+                player.getInventory().addItem(genshinItem);
+                player.sendPacket(new PacketItemAddHintNotify(genshinItem, ActionReason.MailAttachment));
+            }
+        }
+
+        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));
     }
 }

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

 package emu.grasscutter.server.packet.send;
 
 
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.game.Mail;
 import emu.grasscutter.net.packet.GenshinPacket;
@@ -13,10 +14,15 @@ import java.util.List;
 public class PacketMailChangeNotify extends GenshinPacket {
 
     public PacketMailChangeNotify(GenshinPlayer player, Mail message) {
+        this (player, new ArrayList<Mail>(){{add(message);}});
+    }
+
+    public PacketMailChangeNotify(GenshinPlayer player, List<Mail> mailList) {
         super(PacketOpcodes.MailChangeNotify);
 
         MailChangeNotifyOuterClass.MailChangeNotify.Builder proto = MailChangeNotifyOuterClass.MailChangeNotify.newBuilder();
 
+        for(Mail message : mailList) {
             MailTextContentOuterClass.MailTextContent.Builder mailTextContent = MailTextContentOuterClass.MailTextContent.newBuilder();
             mailTextContent.setTitle(message.mailContent.title);
             mailTextContent.setContent(message.mailContent.content);
@@ -41,12 +47,15 @@ public class PacketMailChangeNotify extends GenshinPacket {
             mailData.setSendTime((int)message.sendTime);
             mailData.setExpireTime((int)message.expireTime);
             mailData.setImportance(message.importance);
-        mailData.setIsRead(false);
-        mailData.setIsAttachmentGot(false);
+            mailData.setIsRead(message.isRead);
+            mailData.setIsAttachmentGot(message.isAttachmentGot);
             mailData.setStateValue(message.stateValue);
 
             proto.addMailList(mailData.build());
 
+            Grasscutter.getLogger().info(Grasscutter.getDispatchServer().getGsonFactory().toJson(proto.build()));
+
             this.setData(proto.build());
         }
+    }
 }
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