Add TransferShopsCommand

build.gradle.kts

@@ -71,7 +71,9 @@ publishing {
 }
 
 dependencies {
-    compileOnly("com.alttd:Galaxy-API:1.20.1-R0.1-SNAPSHOT")
+    compileOnly("com.alttd:Galaxy-API:1.20.1-R0.1-SNAPSHOT") {
+        isChanging = true
+    }
     compileOnly("com.github.milkbowl:VaultAPI:1.7") {
         exclude("org.bukkit","bukkit")
     }

src/main/java/com/alttd/playershops/commands/PlayerShopCommand.java

@@ -3,6 +3,7 @@ package com.alttd.playershops.commands;
 import com.alttd.playershops.commands.subcommands.CheckStockCommand;
 import com.alttd.playershops.commands.subcommands.OpenCommand;
 import com.alttd.playershops.commands.subcommands.ReloadCommand;
+import com.alttd.playershops.commands.subcommands.TransferShopsCommand;
 import com.google.common.base.Functions;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
@@ -34,6 +35,7 @@ public class PlayerShopCommand extends Command {
         commands.put(Set.of("reload"), new ReloadCommand());
         commands.put(Set.of("checkstock"), new CheckStockCommand());
         commands.put(Set.of("open"), new OpenCommand());
+        commands.put(Set.of("transfershops"), new TransferShopsCommand());
 
         return commands.entrySet().stream()
                 .flatMap(entry -> entry.getKey().stream().map(s -> Map.entry(s, entry.getValue())))

src/main/java/com/alttd/playershops/commands/subcommands/TransferShopsCommand.java

@@ -0,0 +1,69 @@
+package com.alttd.playershops.commands.subcommands;
+
+import com.alttd.playershops.PlayerShops;
+import com.alttd.playershops.commands.PlayerShopCommand;
+import com.alttd.playershops.commands.PlayerShopCommands;
+import com.alttd.playershops.commands.Subcommand;
+import com.alttd.playershops.shop.PlayerShop;
+import com.alttd.playershops.utils.ShopUtil;
+import com.alttd.playershops.utils.Util;
+import com.destroystokyo.paper.ParticleBuilder;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Particle;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@DefaultQualifier(NonNull.class)
+public class TransferShopsCommand implements Subcommand {
+
+    @Override
+    public boolean execute(CommandSender sender, String subCommand, String[] args) {
+        if (!(sender instanceof Player player)) {
+            sender.sendMiniMessage("<red>Only players can use this command.", null);
+            return false;
+        }
+        if (args.length != 1 && args.length != 2) {
+            player.sendMiniMessage("<red>Invalid command syntax, use /transfershops <uuid> <newplayer>", null);
+            return false;
+        }
+        UUID oldUUID = UUID.fromString(args[0]);
+        Player newShopOwner = Bukkit.getPlayer(args[1]);
+        if (newShopOwner == null) {
+            player.sendMiniMessage("<red>" + args[1] + " is not online and has to be online for this process.", null);
+            return false;
+        }
+        List<PlayerShop> playerShops = PlayerShops.getInstance().getShopHandler().getShops(oldUUID);
+        sender.sendMiniMessage("<red>Starting the transfer process now, this might lag the server.", null);
+        for (PlayerShop playerShop : playerShops) {
+            playerShop.setOwner(newShopOwner);
+        }
+        newShopOwner.sendMiniMessage(playerShops.size() + " have been transferred to you.", null);
+        sender.sendMiniMessage(playerShops.size() + " have been transferred to " + args[1] + ".", null);
+        return true;
+    }
+
+    @Override
+    public List<String> tabComplete(final CommandSender sender, final String subCommand, final String[] args) {
+        if (args.length == 1) {
+            return PlayerShops.getInstance().getShopHandler().getShopOwners().stream().map(uuid -> toString()).toList();
+        } else if (args.length == 2) {
+            return Bukkit.getOnlinePlayers().stream().map(Player::getName).toList();
+        }
+        return Collections.emptyList();
+    }
+
+}

src/main/java/com/alttd/playershops/shop/PlayerShop.java

@@ -140,6 +140,7 @@ public class PlayerShop {
     public void setOwner(Player player) {
         ownerUUID = player.getUniqueId();
         ownerName = player.getName();
+        update();
     }
 
     public Inventory getInventory() {