Send welcome mail on player creation

src/main/java/emu/lunarcore/Config.java

@@ -1,7 +1,9 @@
 package emu.lunarcore;
 
+import java.util.List;
 import java.util.Set;
 
+import emu.lunarcore.data.common.ItemParam;
 import lombok.Getter;
 
 @Getter
@@ -91,6 +93,7 @@ public class Config {
         public int staminaReserveRecoveryRate = 18 * 60;
         public String language = "EN";
         public Set<String> defaultPermissions = Set.of("*");
+        public WelcomeMail welcomeMail = new WelcomeMail();
         
         public int getStaminaRecoveryRate() {
             return staminaRecoveryRate > 0 ? staminaRecoveryRate : 1;
@@ -101,6 +104,27 @@ public class Config {
         }
     }
     
+    @Getter
+    public static class WelcomeMail {
+        public String title;
+        public String sender;
+        public String content;
+        public List<ItemParam> attachments;
+        
+        public WelcomeMail() {
+            this.title = "Welcome to a LunarCore server";
+            this.sender = "Server";
+            this.content = "Welcome to Lunar Core! Please take these items as a starter gift. For a list of commands, type /help in the server chat window. <a type=OpenURL1 href=https://discord.gg/cfPKJ6N5hw>Check out our Discord for more information about the server.</a>";
+            this.attachments = List.of(
+                    new ItemParam(2, 1000000),
+                    new ItemParam(101, 100),
+                    new ItemParam(102, 100),
+                    new ItemParam(1001, 1),
+                    new ItemParam(1002, 1)
+            );
+        }
+    }
+    
     @Getter
     public static class LogOptions {
         public boolean commands = true;

src/main/java/emu/lunarcore/data/common/ItemParam.java

@@ -13,7 +13,7 @@ public class ItemParam {
     @SerializedName(value = "count", alternate = {"ItemCount", "ItemNum"})
     private int count;
 
-    private ItemParamType type = ItemParamType.PILE;
+    private transient ItemParamType type = ItemParamType.PILE;
 
     public ItemParam() {
         // Gson

src/main/java/emu/lunarcore/game/mail/Mailbox.java

@@ -6,6 +6,7 @@ import java.util.List;
 import java.util.stream.Stream;
 
 import emu.lunarcore.LunarCore;
+import emu.lunarcore.data.common.ItemParam;
 import emu.lunarcore.game.inventory.GameItem;
 import emu.lunarcore.game.player.BasePlayerManager;
 import emu.lunarcore.game.player.Player;
@@ -116,6 +117,19 @@ public class Mailbox extends BasePlayerManager implements Iterable<Mail> {
         return deleteList;
     }
     
+    public void sendWelcomeMail() {
+        var welcomeMail = LunarCore.getConfig().getServerOptions().welcomeMail;
+        if (welcomeMail == null) return;
+        
+        Mail mail = new Mail(welcomeMail.getTitle(), welcomeMail.getSender(), welcomeMail.getContent());
+        
+        for (ItemParam param : welcomeMail.getAttachments()) {
+            mail.addAttachment(new GameItem(param.getId(), param.getCount()));
+        }
+        
+        this.sendMail(mail);
+    }
+    
     // Internal method to put mail into the hash map
     private void putMail(Mail mail) {
         mail.setUniqueId(this.getNextMailId());

src/main/java/emu/lunarcore/game/player/Player.java

@@ -169,6 +169,9 @@ public class Player {
         this.addAvatar(avatar);
         this.getCurrentLineup().getAvatars().add(avatar.getAvatarId());
         this.getCurrentLineup().save();
+        
+        // Welcome mail
+        this.getMailbox().sendWelcomeMail();
     }
 
     public GameServer getServer() {