Added database support for mail

Send mail command now works from console (to use it from console change the uuid in the 'SendMailCommand' file

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

 package emu.grasscutter.command.commands;
 
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.command.Command;
 import emu.grasscutter.command.CommandHandler;
 import emu.grasscutter.game.GenshinPlayer;
+import emu.grasscutter.game.Mail;
 import emu.grasscutter.server.packet.send.PacketMailChangeNotify;
 
+import java.time.Instant;
+import java.util.ArrayList;
 import java.util.List;
 
 @Command(label = "sendmail", usage = "sendmail")
@@ -12,8 +16,17 @@ public class SendMailCommand implements CommandHandler {
 
     @Override
     public void execute(GenshinPlayer sender, List<String> args) {
-        // This is literally so I can test the notification
-        sender.getSession().send(new PacketMailChangeNotify(sender));
+        // This is literally so I can receive mail for some reason.
+        if(sender == null) {
+            // This is my uuid in my test server. This is just for testing.
+            // If someone pulled this please put your uuid to receive mail using /sendmail
+            // until I actually make a proper /sendmail command.
+            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));}},
+                Instant.now().getEpochSecond() + 4000));
+
         sender.dropMessage("Check your inbox");
     }
 }

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

@@ -75,6 +75,8 @@ public class GenshinPlayer {
 	private ArrayList<AvatarProfileData> shownAvatars;
 	private Set<Integer> rewardedLevels;
 	
+	private ArrayList<Mail> mail;
+
 	private int sceneId;
 	private int regionId;
 	private int mainCharacterId;
@@ -112,6 +114,8 @@ public class GenshinPlayer {
 		this.flyCloakList = new HashSet<>();
 		this.costumeList = new HashSet<>();
 
+		this.mail = new ArrayList<>();
+
 		this.setSceneId(3);
 		this.setRegionId(1);
 		this.sceneState = SceneLoadState.NONE;
@@ -569,6 +573,16 @@ public class GenshinPlayer {
 		this.sendPacket(new PacketPrivateChatNotify(sender.getUid(), this.getUid(), message.toString()));
 	}
 
+	public List<Mail> getMail() { return 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 void interactWith(int gadgetEntityId) {
 		GenshinEntity entity = getScene().getEntityById(gadgetEntityId);
 

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

+package emu.grasscutter.game;
+
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Mail {
+
+    public int _id;
+    public MailContent mailContent;
+    public List<MailItem> itemList;
+    public long sendTime;
+    public long expireTime;
+    public int importance;
+    public boolean isRead;
+    public boolean isAttachmentGot;
+    public int stateValue;
+
+    public Mail() {
+        _id = 1;
+        mailContent = new MailContent("No title set...", "No content set...");
+        itemList = new ArrayList<>();
+        sendTime = 0;
+        expireTime = 0;
+        importance = 1;
+        isRead = true;
+        isAttachmentGot = true;
+        stateValue = 1;
+    }
+
+    public Mail(MailContent mailContent, List<MailItem> itemList, long expireTime) {
+        this(mailContent, itemList, expireTime, 1);
+    }
+
+    public Mail(MailContent mailContent, List<MailItem> itemList, long expireTime, int importance) {
+        this(mailContent, itemList, expireTime, importance, 1);
+    }
+
+    public Mail(MailContent mailContent, List<MailItem> itemList, long expireTime, int importance, int state) {
+        this(0, mailContent, itemList, expireTime, importance, state);
+    }
+
+    public Mail(int _id, MailContent mailContent, List<MailItem> itemList, long expireTime, int importance, int state) {
+        this._id = _id;
+        this.mailContent = mailContent;
+        this.itemList = itemList;
+        this.sendTime = (int) Instant.now().EPOCH.getEpochSecond();
+        this.expireTime = expireTime;
+        this.importance = importance;
+        this.isRead = false;
+        this.isAttachmentGot = false;
+        this.stateValue = state;
+    }
+
+    public static class MailContent {
+        public String title;
+        public String content;
+        public String sender;
+
+        public MailContent() {
+            this.title = "";
+            this.content = "loading...";
+            this.sender = "loading";
+        }
+
+        public MailContent(String title, String content) {
+            this(title, content, "Server");
+        }
+
+        public MailContent(String title, String content, GenshinPlayer sender) {
+            this(title, content, sender.getNickname());
+        }
+
+        public MailContent(String title, String content, String sender) {
+            this.title = title;
+            this.content = content;
+            this.sender = sender;
+        }
+    }
+
+    public static class MailItem {
+        public int itemId;
+        public int itemCount;
+
+        public MailItem() {
+            this.itemId = 11101;
+            this.itemCount = 1;
+        }
+
+        public MailItem(int itemId) {
+            this(itemId, 1);
+        }
+
+        public MailItem(int itemId, int itemCount) {
+            this.itemId = itemId;
+            this.itemCount = itemCount;
+        }
+    }
+}

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

@@ -3,15 +3,16 @@ 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.DateTimeDeleteOuterClass;
+import emu.grasscutter.net.proto.*;
 import emu.grasscutter.net.proto.GetAllMailRspOuterClass.GetAllMailRsp;
-import emu.grasscutter.net.proto.ItemParamOuterClass;
 import emu.grasscutter.net.proto.MailDataOuterClass.MailData;
-import emu.grasscutter.net.proto.MailItemOuterClass;
 import emu.grasscutter.net.proto.MailTextContentOuterClass.MailTextContent;
-import emu.grasscutter.net.proto.MaterialDeleteInfoOuterClass;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class PacketGetAllMailRsp extends GenshinPacket {
 
@@ -21,33 +22,43 @@ public class PacketGetAllMailRsp extends GenshinPacket {
 
         GetAllMailRsp.Builder proto = GetAllMailRsp.newBuilder();
 
+        List<MailData> mailDataList = new ArrayList<MailData>();
+
         // Dummy data.
+        for(Mail message : player.getMail()) {
             MailTextContent.Builder mailTextContent = MailTextContent.newBuilder();
-        mailTextContent.setTitle("Hello Traveller..");
-        mailTextContent.setContent("You've called me emergency food for the last time. \n Get ready to die!");
-        mailTextContent.setSender("P·A·I·M·O·N");
+            mailTextContent.setTitle(message.mailContent.title);
+            mailTextContent.setContent(message.mailContent.content);
+            mailTextContent.setSender(message.mailContent.sender);
+
+            List<MailItemOuterClass.MailItem> mailItems = new ArrayList<MailItemOuterClass.MailItem>();
 
+            for(Mail.MailItem item : message.itemList) {
                 MailItemOuterClass.MailItem.Builder mailItem = MailItemOuterClass.MailItem.newBuilder();
                 ItemParamOuterClass.ItemParam.Builder itemParam = ItemParamOuterClass.ItemParam.newBuilder();
-
-        itemParam.setItemId(1062);
-        itemParam.setCount(1);
+                itemParam.setItemId(item.itemId);
+                itemParam.setCount(item.itemCount);
                 mailItem.setItemParam(itemParam.build());
 
-        MailData.Builder mailData = MailData.newBuilder();
-        mailData.setMailId(100);
+                mailItems.add(mailItem.build());
+            }
+
+            MailDataOuterClass.MailData.Builder mailData = MailDataOuterClass.MailData.newBuilder();
+            mailData.setMailId(message._id);
             mailData.setMailTextContent(mailTextContent.build());
-        mailData.addItemList(mailItem.build());
-        mailData.setSendTime(1634100481);
-        mailData.setExpireTime(1664498747);
-        mailData.setImportance(1);
-        mailData.setIsRead(false);
-        mailData.setIsAttachmentGot(false);
-        mailData.setStateValue(1);
-
-        proto.addMailList(mailData.build());
-        proto.addMailList(mailData.setMailId(101).build());
-        proto.setIsTruncated(true);
+            mailData.addAllItemList(mailItems);
+            mailData.setSendTime((int)message.sendTime);
+            mailData.setExpireTime((int)message.expireTime);
+            mailData.setImportance(message.importance);
+            mailData.setIsRead(message.isRead);
+            mailData.setIsAttachmentGot(message.isAttachmentGot);
+            mailData.setStateValue(message.stateValue);
+
+            mailDataList.add(mailData.build());
+        }
+
+        proto.addAllMailList(mailDataList);
+        //proto.setIsTruncated(true);
 
         Grasscutter.getLogger().info(Grasscutter.getDispatchServer().getGsonFactory().toJson(proto.build()));
 

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

@@ -2,42 +2,48 @@ package emu.grasscutter.server.packet.send;
 
 
 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 java.util.ArrayList;
 import java.util.List;
 
 public class PacketMailChangeNotify extends GenshinPacket {
 
-    public PacketMailChangeNotify(GenshinPlayer player) {
+    public PacketMailChangeNotify(GenshinPlayer player, Mail message) {
         super(PacketOpcodes.MailChangeNotify);
 
         MailChangeNotifyOuterClass.MailChangeNotify.Builder proto = MailChangeNotifyOuterClass.MailChangeNotify.newBuilder();
 
-        // Dummy data.
         MailTextContentOuterClass.MailTextContent.Builder mailTextContent = MailTextContentOuterClass.MailTextContent.newBuilder();
-        mailTextContent.setTitle("System Message");
-        mailTextContent.setContent("I'm going to kill you...");
-        mailTextContent.setSender("YOU");
+        mailTextContent.setTitle(message.mailContent.title);
+        mailTextContent.setContent(message.mailContent.content);
+        mailTextContent.setSender(message.mailContent.sender);
 
+        List<MailItemOuterClass.MailItem> mailItems = new ArrayList<MailItemOuterClass.MailItem>();
+
+        for(Mail.MailItem item : message.itemList) {
             MailItemOuterClass.MailItem.Builder mailItem = MailItemOuterClass.MailItem.newBuilder();
             ItemParamOuterClass.ItemParam.Builder itemParam = ItemParamOuterClass.ItemParam.newBuilder();
-
-        itemParam.setItemId(1062);
-        itemParam.setCount(1);
+            itemParam.setItemId(item.itemId);
+            itemParam.setCount(item.itemCount);
             mailItem.setItemParam(itemParam.build());
 
+            mailItems.add(mailItem.build());
+        }
+
         MailDataOuterClass.MailData.Builder mailData = MailDataOuterClass.MailData.newBuilder();
-        mailData.setMailId(100);
+        mailData.setMailId(message._id);
         mailData.setMailTextContent(mailTextContent.build());
-        mailData.addItemList(mailItem.build());
-        mailData.setSendTime(1634100481);
-        mailData.setExpireTime(1664498747);
-        mailData.setImportance(1);
+        mailData.addAllItemList(mailItems);
+        mailData.setSendTime((int)message.sendTime);
+        mailData.setExpireTime((int)message.expireTime);
+        mailData.setImportance(message.importance);
         mailData.setIsRead(false);
         mailData.setIsAttachmentGot(false);
-        mailData.setStateValue(1);
+        mailData.setStateValue(message.stateValue);
 
         proto.addMailList(mailData.build());