Merge 5b8045236d into 6cd7ad0901

* feat: better command abstraction

* feat: OfflineUserArgument type

* feat: balance, balance other cmds in common & double, integer arg

* feat: command manager, better arguments abstraction

* feat: map args

* feat: some things

* feat(better command abstraction)!: switch to brigadier (#8)

* feat: switch to brigadier

* some updates

* feat: make suggestion provider work

* supress warnings

* feat: pay & set command

* feat: give & take command, better suggestions, permissions

* refactor: cleanup

* fix: dont register pay if currency is not payable

* fix: send commands only if you have perms

* make second test currency not payable

* feat: use command's description & name

* refactor: cleanup, rename bukkit to paper

* refactor: cleanup, rename bukkit to paper

* feat: add built-in info command

* ci: build paper, not bukkit

* refactor: better test organization

* refactor: better test organization

* feat: locks

* feat: finish locking

* feat: handle missing user

* refactor: move methods to CommandHelper

* refactor: change minimum api version

* feat: console support

.github/workflows/ci.yml

@@ -12,8 +12,7 @@ jobs:
           distribution: 'adopt'
       - name: Build with Gradle
         run: |
-          ./gradlew shadowJar -p bukkittest
-          ./gradlew shadowJar -p bukkit
+          ./gradlew shadowJar -p paper
           ./gradlew shadowJar -p currency-money
       - uses: actions/upload-artifact@v3
         with:

.gitignore

@@ -7,6 +7,7 @@
 ### ForgeGradle ###
 # Minecraft client/server files
 run/
+runServer/
 
 ### Intellij ###
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider

api/build.gradle.kts

@@ -3,6 +3,12 @@ plugins {
 }
 
 dependencies {
+    api("net.kyori:adventure-api:4.12.0") {
+        exclude(module = "adventure-bom")
+        exclude(module = "checker-qual")
+        exclude(module = "annotations")
+    }
+
     compileOnly("org.projectlombok:lombok:1.18.28")
     annotationProcessor("org.projectlombok:lombok:1.18.28")
 

api/src/main/java/dev/xhyrom/lighteco/api/LightEco.java

@@ -3,10 +3,14 @@ package dev.xhyrom.lighteco.api;
 import dev.xhyrom.lighteco.api.manager.CommandManager;
 import dev.xhyrom.lighteco.api.manager.CurrencyManager;
 import dev.xhyrom.lighteco.api.manager.UserManager;
+import dev.xhyrom.lighteco.api.messaging.MessagingService;
 import dev.xhyrom.lighteco.api.platform.Platform;
 import dev.xhyrom.lighteco.api.platform.PlayerAdapter;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
+import java.util.Optional;
+
 public interface LightEco {
     /**
      * Gets the {@link Platform}, which represents the current platform the
@@ -37,6 +41,13 @@ public interface LightEco {
      */
     @NonNull CommandManager getCommandManager();
 
+    /**
+     * Gets the {@link MessagingService}, which manages the messaging.
+     *
+     * @return the messaging service
+     */
+    @NonNull Optional<MessagingService> getMessagingService();
+
     /**
      * Gets the {@link PlayerAdapter} for a player class.
      *

api/src/main/java/dev/xhyrom/lighteco/api/LightEcoProvider.java

@@ -1,10 +1,11 @@
 package dev.xhyrom.lighteco.api;
 
-import lombok.experimental.UtilityClass;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
 import static org.jetbrains.annotations.ApiStatus.Internal;
 
+import lombok.experimental.UtilityClass;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
 @UtilityClass
 public final class LightEcoProvider {
     private static LightEco instance;

api/src/main/java/dev/xhyrom/lighteco/api/manager/CommandManager.java

@@ -1,6 +1,7 @@
 package dev.xhyrom.lighteco.api.manager;
 
 import dev.xhyrom.lighteco.api.model.currency.Currency;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 public interface CommandManager {

api/src/main/java/dev/xhyrom/lighteco/api/manager/CurrencyManager.java

@@ -1,6 +1,7 @@
 package dev.xhyrom.lighteco.api.manager;
 
 import dev.xhyrom.lighteco.api.model.currency.Currency;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 

api/src/main/java/dev/xhyrom/lighteco/api/manager/UserManager.java

@@ -1,6 +1,7 @@
 package dev.xhyrom.lighteco.api.manager;
 
 import dev.xhyrom.lighteco.api.model.user.User;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -9,6 +10,7 @@ import java.util.concurrent.CompletableFuture;
 
 public interface UserManager {
     @NonNull CompletableFuture<User> loadUser(@NonNull UUID uniqueId);
+
     @NonNull CompletableFuture<User> loadUser(@NonNull UUID uniqueId, String username);
 
     @NonNull CompletableFuture<Void> saveUser(@NonNull User user);

api/src/main/java/dev/xhyrom/lighteco/api/messaging/MessagingService.java

@@ -0,0 +1,8 @@
+package dev.xhyrom.lighteco.api.messaging;
+
+import dev.xhyrom.lighteco.api.model.currency.Currency;
+import dev.xhyrom.lighteco.api.model.user.User;
+
+public interface MessagingService {
+    void pushUserUpdate(User user, Currency currency);
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/IncomingMessageConsumer.java

@@ -0,0 +1,11 @@
+package dev.xhyrom.lighteco.api.messenger;
+
+import dev.xhyrom.lighteco.api.messenger.message.Message;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public interface IncomingMessageConsumer {
+    void consumeIncomingMessage(@NonNull Message message);
+
+    void consumeRawIncomingMessage(@NonNull String message);
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/Messenger.java

@@ -0,0 +1,12 @@
+package dev.xhyrom.lighteco.api.messenger;
+
+import dev.xhyrom.lighteco.api.messenger.message.OutgoingMessage;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public interface Messenger extends AutoCloseable {
+    void sendOutgoingMessage(@NonNull OutgoingMessage message, boolean global);
+
+    @Override
+    default void close() {}
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/MessengerProvider.java

@@ -0,0 +1,7 @@
+package dev.xhyrom.lighteco.api.messenger;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public interface MessengerProvider {
+    @NonNull Messenger obtain(@NonNull IncomingMessageConsumer consumer);
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/message/Message.java

@@ -0,0 +1,12 @@
+package dev.xhyrom.lighteco.api.messenger.message;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.UUID;
+
+/**
+ * Represents a message that can be received by a {@link dev.xhyrom.lighteco.api.messenger.Messenger}.
+ */
+public interface Message {
+    @NonNull UUID getId();
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/message/OutgoingMessage.java

@@ -0,0 +1,15 @@
+package dev.xhyrom.lighteco.api.messenger.message;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+/**
+ * Represents a message that can be sent via a {@link dev.xhyrom.lighteco.api.messenger.Messenger}.
+ */
+public interface OutgoingMessage extends Message {
+    /**
+     * Serializes message into a string.
+     *
+     * @return serialized message
+     */
+    @NonNull String serialize();
+}

api/src/main/java/dev/xhyrom/lighteco/api/messenger/message/type/UserUpdateMessage.java

@@ -0,0 +1,24 @@
+package dev.xhyrom.lighteco.api.messenger.message.type;
+
+import dev.xhyrom.lighteco.api.messenger.message.Message;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.util.UUID;
+
+/**
+ * Represents a message that is sent when a user updates their profile.
+ */
+public interface UserUpdateMessage extends Message {
+    /**
+     * Gets the unique id of the user that updated their profile.
+     *
+     * @return the user's unique id
+     */
+    @NonNull UUID getUserUniqueId();
+
+    @NonNull String getCurrencyIdentifier();
+
+    @NonNull BigDecimal getNewBalance();
+}

api/src/main/java/dev/xhyrom/lighteco/api/model/currency/Currency.java

@@ -24,7 +24,8 @@ public interface Currency {
      */
     default String[] getIdentifierAliases() {
         return new String[0];
-    };
+    }
+    ;
 
     /**
      * Returns the type of the currency, either {@link Type#LOCAL} or {@link Type#GLOBAL}
@@ -79,7 +80,8 @@ public interface Currency {
      */
     default BigDecimal calculateTax(User user, BigDecimal amount) {
         return BigDecimal.ZERO;
-    };
+    }
+    ;
 
     /**
      * Represents the type of currency

api/src/main/java/dev/xhyrom/lighteco/api/model/user/User.java

@@ -1,6 +1,9 @@
 package dev.xhyrom.lighteco.api.model.user;
 
 import dev.xhyrom.lighteco.api.model.currency.Currency;
+
+import net.kyori.adventure.text.Component;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -49,7 +52,8 @@ public interface User {
      * @param amount the amount
      * @throws IllegalArgumentException if the amount is negative
      */
-    void deposit(@NonNull Currency currency, @NonNull BigDecimal amount) throws IllegalArgumentException;
+    void deposit(@NonNull Currency currency, @NonNull BigDecimal amount)
+            throws IllegalArgumentException;
 
     /**
      * Subtract the specified amount from the balance of this user for the specified currency.
@@ -58,5 +62,14 @@ public interface User {
      * @param amount the amount
      * @throws IllegalArgumentException if the amount is negative
      */
-    void withdraw(@NonNull Currency currency, @NonNull BigDecimal amount) throws IllegalArgumentException;
+    void withdraw(@NonNull Currency currency, @NonNull BigDecimal amount)
+            throws IllegalArgumentException;
+
+    /**
+     * Send a message to this user.
+     * Message will be silently dropped if the user is offline.
+     *
+     * @param message the message
+     */
+    void sendMessage(Component message);
 }

api/src/main/java/dev/xhyrom/lighteco/api/platform/Platform.java

@@ -11,7 +11,7 @@ public interface Platform {
     @NonNull Type getType();
 
     enum Type {
-        BUKKIT("Bukkit"),
+        PAPER("Paper"),
         SPONGE("Sponge"),
         VELOCITY("Velocity"),
         BUNGEECORD("BungeeCord");
@@ -27,7 +27,7 @@ public interface Platform {
         }
 
         public boolean isLocal() {
-            return this == BUKKIT || this == SPONGE;
+            return this == PAPER || this == SPONGE;
         }
 
         public boolean isProxy() {

api/src/main/java/dev/xhyrom/lighteco/api/platform/PlayerAdapter.java

@@ -1,6 +1,7 @@
 package dev.xhyrom.lighteco.api.platform;
 
 import dev.xhyrom.lighteco.api.model.user.User;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.concurrent.CompletableFuture;

api/src/main/java/dev/xhyrom/lighteco/api/storage/StorageProvider.java

@@ -2,6 +2,7 @@ package dev.xhyrom.lighteco.api.storage;
 
 import dev.xhyrom.lighteco.api.model.currency.Currency;
 import dev.xhyrom.lighteco.api.model.user.User;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -23,7 +24,10 @@ public interface StorageProvider {
     void shutdown() throws Exception;
 
     default void registerCurrency(@NonNull Currency currency) throws Exception {}
+
     @NonNull User loadUser(@NonNull UUID uniqueId, @Nullable String username) throws Exception;
+
     void saveUser(@NonNull User user) throws Exception;
+
     void saveUsers(@NonNull User... users) throws Exception;
 }

build.gradle.kts

@@ -3,6 +3,7 @@ import java.io.ByteArrayOutputStream
 plugins {
     id("java")
     id("org.sonarqube") version "4.2.1.3168"
+    id("com.diffplug.spotless") version "6.25.0"
 }
 
 val majorVersion = 0
@@ -10,6 +11,12 @@ val minorVersion = 1
 val patchVersion = determinePatchVersion(project)
 val commitHash = determineCommitHash(project)
 
+defaultTasks("spotlessApply")
+
+repositories {
+    mavenCentral()
+}
+
 allprojects {
     group = "dev.xhyrom"
     version = "$majorVersion.$minorVersion.$patchVersion"
@@ -28,6 +35,19 @@ subprojects {
     repositories {
         mavenCentral()
         maven("https://storehouse.okaeri.eu/repository/maven-public/")
+        maven("https://libraries.minecraft.net")
+    }
+}
+
+spotless {
+    java {
+        importOrder()
+        removeUnusedImports()
+
+        palantirJavaFormat().style("AOSP")
+        formatAnnotations()
+
+        target("api/src/main/java/**", "common/src/main/java/**", "currency-money/src/main/java/**", "paper/src/main/java/**", "sponge-8/src/main/java/**", "test/**/src/main/java/**")
     }
 }
 
@@ -56,5 +76,5 @@ fun determineCommitHash(project: Project): String {
         standardOutput = commitHashInfo
     }
 
-    return commitHashInfo.toString()
+    return commitHashInfo.toString().strip()
 }

buildSrc/src/main/kotlin/lighteco.base-logic.gradle.kts

@@ -4,7 +4,12 @@ plugins {
 }
 
 java {
-    // toolchain.languageVersion.set(JavaLanguageVersion.of(17))
+    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_17
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+
     withSourcesJar()
 }
 
@@ -13,6 +18,7 @@ tasks {
         filesMatching(listOf("plugin.yml")) {
             expand(
                 "name" to project.name,
+                "coreName" to "LightEco",
                 "version" to project.version,
                 "description" to project.description,
                 "author" to "xHyroM"

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/BukkitLightEcoPlugin.java

@@ -1,67 +0,0 @@
-package dev.xhyrom.lighteco.bukkit;
-
-import dev.xhyrom.lighteco.api.LightEco;
-import dev.xhyrom.lighteco.api.manager.ContextManager;
-import dev.xhyrom.lighteco.api.platform.Platform;
-import dev.xhyrom.lighteco.bukkit.hooks.Hooks;
-import dev.xhyrom.lighteco.bukkit.listeners.BukkitConnectionListener;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitContextManager;
-import dev.xhyrom.lighteco.common.manager.currency.StandardCurrencyManager;
-import dev.xhyrom.lighteco.common.plugin.AbstractLightEcoPlugin;
-import dev.xhyrom.lighteco.common.manager.user.StandardUserManager;
-import lombok.Getter;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.ServicePriority;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
-@Getter
-public class BukkitLightEcoPlugin extends AbstractLightEcoPlugin {
-    private final BukkitLightEcoBootstrap bootstrap;
-
-    @Getter
-    private StandardUserManager userManager;
-    @Getter
-    private StandardCurrencyManager currencyManager;
-    @Getter
-    private BukkitCommandManager commandManager;
-    @Getter
-    private ContextManager<Player> contextManager;
-
-    public BukkitLightEcoPlugin(BukkitLightEcoBootstrap bootstrap) {
-        this.bootstrap = bootstrap;
-    }
-
-    @Override
-    protected void registerListeners() {
-        this.bootstrap.getLoader().getServer().getPluginManager().registerEvents(new BukkitConnectionListener(this), this.bootstrap.getLoader());
-    }
-
-    @Override
-    public void setupManagers() {
-        this.userManager = new StandardUserManager(this);
-        this.currencyManager = new StandardCurrencyManager(this);
-        this.commandManager = new BukkitCommandManager(this);
-        this.contextManager = new BukkitContextManager();
-    }
-
-    @Override
-    protected void registerApiOnPlatform(LightEco api) {
-        this.getBootstrap().getLoader().getServer().getServicesManager().register(LightEco.class, api, this.getBootstrap().getLoader(), ServicePriority.Normal);
-    }
-
-    @Override
-    protected void registerPlatformHooks() {
-        Hooks.register(this);
-    }
-
-    @Override
-    protected void removePlatformHooks() {
-        Hooks.unregister();
-    }
-
-    @Override
-    public Platform.@NonNull Type getPlatformType() {
-        return Platform.Type.BUKKIT;
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/BalanceCommand.java

@@ -1,59 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.jorel.commandapi.arguments.OfflinePlayerArgument;
-import dev.jorel.commandapi.executors.CommandArguments;
-import dev.xhyrom.lighteco.bukkit.chat.BukkitCommandSender;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import lombok.RequiredArgsConstructor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.CommandSender;
-
-@RequiredArgsConstructor
-public class BalanceCommand implements Command {
-    private final BukkitCommandManager manager;
-    private final String name;
-    private final Currency currency;
-    private final String permissionBase;
-
-    @Override
-    public CommandAPICommand[] multipleBuild() {
-        return new CommandAPICommand[]{
-                new CommandAPICommand(name)
-                        .withPermission(permissionBase + "balance.others")
-                        .withArguments(new OfflinePlayerArgument("target"))
-                        .executes((sender, args) -> {
-                            this.handleBalance(sender, args, currency);
-                        }),
-                new CommandAPICommand(name)
-                        .withPermission(permissionBase + "balance")
-                        .executesPlayer((sender, args) -> {
-                            this.handleBalance(sender, args, currency);
-                        })
-        };
-    }
-
-    private void handleBalance(CommandSender originalSender, CommandArguments args, Currency currency) {
-        BukkitCommandSender sender = new BukkitCommandSender(originalSender, this.manager.audienceFactory);
-        OfflinePlayer target = (OfflinePlayer) args.get("target");
-
-        if (target == null) {
-            this.manager.onBalance(sender, currency);
-
-            return;
-        }
-
-        this.manager.plugin.getUserManager().loadUser(target.getUniqueId())
-                .thenAccept(result -> {
-                    String username = result.getUsername() == null ?
-                            target.getName() != null
-                                    ? target.getName()
-                                    : args.getRaw("target")
-                            : result.getUsername();
-                    result.setUsername(username);
-
-                    this.manager.onBalance(sender, currency, result);
-                });
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/Command.java

@@ -1,13 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-
-public interface Command {
-    default CommandAPICommand build() {
-        return null;
-    }
-
-    default CommandAPICommand[] multipleBuild() {
-        return new CommandAPICommand[0];
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/GiveCommand.java

@@ -1,54 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.jorel.commandapi.arguments.DoubleArgument;
-import dev.jorel.commandapi.arguments.IntegerArgument;
-import dev.jorel.commandapi.arguments.OfflinePlayerArgument;
-import dev.jorel.commandapi.executors.CommandArguments;
-import dev.xhyrom.lighteco.bukkit.chat.BukkitCommandSender;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import lombok.RequiredArgsConstructor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.CommandSender;
-
-import java.math.BigDecimal;
-
-@RequiredArgsConstructor
-public class GiveCommand implements Command {
-    private final BukkitCommandManager manager;
-    private final Currency currency;
-    private final String permissionBase;
-
-    @Override
-    public CommandAPICommand build() {
-        return new CommandAPICommand("give")
-                .withPermission(permissionBase + "give")
-                .withArguments(
-                        new OfflinePlayerArgument("target"),
-                        currency.getProxy().fractionalDigits() > 0
-                                ? new DoubleArgument("amount", 1)
-                                : new IntegerArgument("amount", 1)
-                )
-                .executes((sender, args) -> {
-                    this.handleGive(sender, args, currency);
-                });
-    }
-
-
-    private void handleGive(CommandSender originalSender, CommandArguments args, Currency currency) {
-        BukkitCommandSender sender = new BukkitCommandSender(originalSender, this.manager.audienceFactory);
-        OfflinePlayer target = (OfflinePlayer) args.get("target");
-        BigDecimal amount = BigDecimal.valueOf(Double.parseDouble(args.getRaw("amount")));
-
-        if (!this.manager.canUse(sender, currency)) return;
-
-        this.manager.plugin.getUserManager().loadUser(target.getUniqueId())
-                .thenAccept(result -> {
-                    String name = target.getName() != null ? target.getName() : args.getRaw("target");
-                    result.setUsername(name);
-
-                    this.manager.onGive(sender, currency, result, amount);
-                });
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/PayCommand.java

@@ -1,57 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.jorel.commandapi.arguments.DoubleArgument;
-import dev.jorel.commandapi.arguments.IntegerArgument;
-import dev.jorel.commandapi.arguments.OfflinePlayerArgument;
-import dev.jorel.commandapi.executors.CommandArguments;
-import dev.xhyrom.lighteco.bukkit.chat.BukkitCommandSender;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import lombok.RequiredArgsConstructor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.CommandSender;
-
-import java.math.BigDecimal;
-
-@RequiredArgsConstructor
-public class PayCommand implements Command {
-    private final BukkitCommandManager manager;
-    private final Currency currency;
-    private final String permissionBase;
-
-    @Override
-    public CommandAPICommand build() {
-        return new CommandAPICommand("pay")
-                .withPermission(permissionBase + "pay")
-                .withArguments(
-                        new OfflinePlayerArgument("target"),
-                        currency.getProxy().fractionalDigits() > 0
-                                ? new DoubleArgument("amount", 1)
-                                : new IntegerArgument("amount", 1)
-                )
-                .executesPlayer((sender, args) -> {
-                    this.handlePay(sender, args, currency);
-                });
-    }
-
-    private void handlePay(CommandSender originalSender, CommandArguments args, Currency currency) {
-        BukkitCommandSender sender = new BukkitCommandSender(originalSender, this.manager.audienceFactory);
-        OfflinePlayer target = (OfflinePlayer) args.get("target");
-        BigDecimal amount = BigDecimal.valueOf(Double.parseDouble(args.getRaw("amount")));
-
-        if (!this.manager.canUse(sender, currency)) return;
-
-        this.manager.plugin.getUserManager().loadUser(target.getUniqueId())
-                .thenAccept(result -> {
-                    String username = result.getUsername() == null ?
-                            target.getName() != null
-                                    ? target.getName()
-                                    : args.getRaw("target")
-                            : result.getUsername();
-                    result.setUsername(username);
-
-                    this.manager.onPay(sender, currency, result, amount);
-                });
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/SetCommand.java

@@ -1,54 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.jorel.commandapi.arguments.DoubleArgument;
-import dev.jorel.commandapi.arguments.IntegerArgument;
-import dev.jorel.commandapi.arguments.OfflinePlayerArgument;
-import dev.jorel.commandapi.executors.CommandArguments;
-import dev.xhyrom.lighteco.bukkit.chat.BukkitCommandSender;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import lombok.RequiredArgsConstructor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.CommandSender;
-
-import java.math.BigDecimal;
-
-@RequiredArgsConstructor
-public class SetCommand implements Command {
-    private final BukkitCommandManager manager;
-    private final Currency currency;
-    private final String permissionBase;
-
-    @Override
-    public CommandAPICommand build() {
-        return new CommandAPICommand("set")
-                .withPermission(permissionBase + "set")
-                .withArguments(
-                        new OfflinePlayerArgument("target"),
-                        currency.getProxy().fractionalDigits() > 0
-                                ? new DoubleArgument("amount", 0)
-                                : new IntegerArgument("amount", 0)
-                )
-                .executes((sender, args) -> {
-                    this.handleSet(sender, args, currency);
-                });
-    }
-
-
-    private void handleSet(CommandSender originalSender, CommandArguments args, Currency currency) {
-        BukkitCommandSender sender = new BukkitCommandSender(originalSender, this.manager.audienceFactory);
-        OfflinePlayer target = (OfflinePlayer) args.get("target");
-        BigDecimal amount = BigDecimal.valueOf(Double.parseDouble(args.getRaw("amount")));
-
-        if (!this.manager.canUse(sender, currency)) return;
-
-        this.manager.plugin.getUserManager().loadUser(target.getUniqueId())
-                .thenAccept(result -> {
-                    String name = target.getName() != null ? target.getName() : args.getRaw("target");
-                    result.setUsername(name);
-
-                    this.manager.onSet(sender, currency, result, amount);
-                });
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/commands/TakeCommand.java

@@ -1,54 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.commands;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.jorel.commandapi.arguments.DoubleArgument;
-import dev.jorel.commandapi.arguments.IntegerArgument;
-import dev.jorel.commandapi.arguments.OfflinePlayerArgument;
-import dev.jorel.commandapi.executors.CommandArguments;
-import dev.xhyrom.lighteco.bukkit.chat.BukkitCommandSender;
-import dev.xhyrom.lighteco.bukkit.manager.BukkitCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import lombok.RequiredArgsConstructor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.CommandSender;
-
-import java.math.BigDecimal;
-
-@RequiredArgsConstructor
-public class TakeCommand implements Command {
-    private final BukkitCommandManager manager;
-    private final Currency currency;
-    private final String permissionBase;
-
-    @Override
-    public CommandAPICommand build() {
-        return new CommandAPICommand("take")
-                .withPermission(permissionBase + "take")
-                .withArguments(
-                        new OfflinePlayerArgument("target"),
-                        currency.getProxy().fractionalDigits() > 0
-                                ? new DoubleArgument("amount", 1)
-                                : new IntegerArgument("amount", 1)
-                )
-                .executes((sender, args) -> {
-                    this.handleTake(sender, args, currency);
-                });
-    }
-
-
-    private void handleTake(CommandSender originalSender, CommandArguments args, Currency currency) {
-        BukkitCommandSender sender = new BukkitCommandSender(originalSender, this.manager.audienceFactory);
-        OfflinePlayer target = (OfflinePlayer) args.get("target");
-        BigDecimal amount = BigDecimal.valueOf(Double.parseDouble(args.getRaw("amount")));
-
-        if (!this.manager.canUse(sender, currency)) return;
-
-        this.manager.plugin.getUserManager().loadUser(target.getUniqueId())
-                .thenAccept(result -> {
-                    String name = target.getName() != null ? target.getName() : args.getRaw("target");
-                    result.setUsername(name);
-
-                    this.manager.onTake(sender, currency, result, amount);
-                });
-    }
-}

bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/manager/BukkitCommandManager.java

@@ -1,81 +0,0 @@
-package dev.xhyrom.lighteco.bukkit.manager;
-
-import dev.jorel.commandapi.CommandAPICommand;
-import dev.xhyrom.lighteco.bukkit.commands.*;
-import dev.xhyrom.lighteco.common.manager.command.AbstractCommandManager;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
-import net.kyori.adventure.platform.bukkit.BukkitAudiences;
-import org.bukkit.plugin.java.JavaPlugin;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
-public class BukkitCommandManager extends AbstractCommandManager {
-    public final BukkitAudiences audienceFactory;
-
-    public BukkitCommandManager(LightEcoPlugin plugin) {
-        super(plugin);
-
-        this.audienceFactory = BukkitAudiences.create((JavaPlugin) this.plugin.getBootstrap().getLoader());
-    }
-
-    @Override
-    public void registerCurrencyCommand(@NonNull Currency currency) {
-        registerCommands(currency.getIdentifier(), currency);
-
-        for (String alias : currency.getIdentifierAliases()) {
-            registerCommands(alias, currency);
-        }
-    }
-
-    @Override
-    public void registerCurrencyCommand(@NonNull Currency currency, boolean main) {
-        if (!main) {
-            registerCurrencyCommand(currency);
-            return;
-        }
-
-        String permissionBase = "lighteco.currency." + currency.getIdentifier() + ".command.";
-
-        // Register main command
-        registerCurrencyCommand(currency);
-
-        // Expose pay as main command
-        if (currency.isPayable())
-            new PayCommand(this, currency, permissionBase).build().register();
-
-        // Expose balance as main command
-        for (CommandAPICommand cmd : new BalanceCommand(
-                this,
-                "balance",
-                currency,
-                permissionBase
-        ).multipleBuild()) {
-            cmd.register();
-        }
-    }
-
-    private void registerCommands(@NonNull String name, @NonNull Currency currency) {
-        String permissionBase = "lighteco.currency." + currency.getIdentifier() + ".command.";
-
-        // Balance
-        for (CommandAPICommand cmd : new BalanceCommand(
-                this,
-                name,
-                currency,
-                permissionBase
-        ).multipleBuild()) {
-            cmd.register();
-        }
-
-        CommandAPICommand cmd = new CommandAPICommand(name)
-                .withSubcommand(new SetCommand(this, currency, permissionBase).build())
-                .withSubcommand(new GiveCommand(this, currency, permissionBase).build())
-                .withSubcommand(new TakeCommand(this, currency, permissionBase).build())
-                .withSubcommands(new BalanceCommand(this, "balance", currency, permissionBase).multipleBuild());
-
-        if (currency.isPayable())
-            cmd = cmd.withSubcommand(new PayCommand(this, currency, permissionBase).build());
-
-        cmd.register();
-    }
-}

bukkittest/.gitignore

@@ -1,44 +0,0 @@
-.gradle
-build/
-!gradle/wrapper/gradle-wrapper.jar
-!**/src/main/**/build/
-!**/src/test/**/build/
-
-### IntelliJ IDEA ###
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
-*.iws
-*.iml
-*.ipr
-out/
-!**/src/main/**/out/
-!**/src/test/**/out/
-
-### Eclipse ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-bin/
-!**/src/main/**/bin/
-!**/src/test/**/bin/
-
-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
-
-### VS Code ###
-.vscode/
-
-### Mac OS ###
-.DS_Store
-
-runServer/

common/build.gradle.kts

@@ -19,7 +19,10 @@ dependencies {
     implementation("eu.okaeri:okaeri-configs-yaml-snakeyaml:5.0.0-beta.5")
     implementation("eu.okaeri:okaeri-configs-validator-okaeri:5.0.0-beta.5")
 
+    compileOnly("com.mojang:brigadier:1.0.18")
+
     compileOnly("com.zaxxer:HikariCP:5.0.1")
+    compileOnly("redis.clients:jedis:5.1.0")
 
     compileOnly("org.projectlombok:lombok:1.18.28")
     annotationProcessor("org.projectlombok:lombok:1.18.28")

common/src/main/java/dev/xhyrom/lighteco/common/api/LightEcoApi.java

@@ -4,12 +4,16 @@ import dev.xhyrom.lighteco.api.LightEco;
 import dev.xhyrom.lighteco.api.manager.CommandManager;
 import dev.xhyrom.lighteco.api.manager.CurrencyManager;
 import dev.xhyrom.lighteco.api.manager.UserManager;
+import dev.xhyrom.lighteco.api.messaging.MessagingService;
 import dev.xhyrom.lighteco.api.platform.Platform;
 import dev.xhyrom.lighteco.api.platform.PlayerAdapter;
 import dev.xhyrom.lighteco.common.api.impl.*;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
+import java.util.Optional;
+
 public class LightEcoApi implements LightEco {
     private final LightEcoPlugin plugin;
 
@@ -49,12 +53,18 @@ public class LightEcoApi implements LightEco {
         return this.commandManager;
     }
 
+    @Override
+    public @NonNull Optional<MessagingService> getMessagingService() {
+        return this.plugin.getMessagingService().map(ApiMessagingService::new);
+    }
+
     @Override
     public @NonNull <T> PlayerAdapter<T> getPlayerAdapter(@NonNull Class<T> playerClass) {
         Class<?> expected = this.plugin.getContextManager().getPlayerClass();
 
         if (!expected.equals(playerClass)) {
-            throw new IllegalArgumentException("Expected player class " + expected.getName() + ", got " + playerClass.getName());
+            throw new IllegalArgumentException("Expected player class " + expected.getName()
+                    + ", got " + playerClass.getName());
         }
 
         return (PlayerAdapter<T>) this.playerAdapter;

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiAbstractManager.java

@@ -4,10 +4,10 @@ import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
 
 public abstract class ApiAbstractManager<H> {
     protected final LightEcoPlugin plugin;
-    protected final H handler;
+    protected final H handle;
 
-    protected ApiAbstractManager(LightEcoPlugin plugin, H handler) {
+    protected ApiAbstractManager(LightEcoPlugin plugin, H handle) {
         this.plugin = plugin;
-        this.handler = handler;
+        this.handle = handle;
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiCommandManager.java

@@ -3,26 +3,30 @@ package dev.xhyrom.lighteco.common.api.impl;
 import dev.xhyrom.lighteco.api.manager.CommandManager;
 import dev.xhyrom.lighteco.api.model.currency.Currency;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
-public class ApiCommandManager extends ApiAbstractManager<dev.xhyrom.lighteco.common.manager.command.CommandManager> implements CommandManager {
-    public ApiCommandManager(LightEcoPlugin plugin, dev.xhyrom.lighteco.common.manager.command.CommandManager handler) {
-        super(plugin, handler);
+public class ApiCommandManager
+        extends ApiAbstractManager<dev.xhyrom.lighteco.common.command.CommandManager>
+        implements CommandManager {
+    public ApiCommandManager(
+            LightEcoPlugin plugin, dev.xhyrom.lighteco.common.command.CommandManager handle) {
+        super(plugin, handle);
     }
 
     @Override
     public void registerCurrencyCommand(@NonNull Currency currency) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.plugin.getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.plugin.getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        this.handler.registerCurrencyCommand(internal);
+        this.handle.register(internal, false);
     }
 
     @Override
     public void registerCurrencyCommand(@NonNull Currency currency, boolean main) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.plugin.getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.plugin.getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        this.handler.registerCurrencyCommand(internal, main);
+        this.handle.register(internal, main);
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiCurrencyManager.java

@@ -3,34 +3,38 @@ package dev.xhyrom.lighteco.common.api.impl;
 import dev.xhyrom.lighteco.api.manager.CurrencyManager;
 import dev.xhyrom.lighteco.api.model.currency.Currency;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.Collection;
 
-public class ApiCurrencyManager extends ApiAbstractManager<dev.xhyrom.lighteco.common.manager.currency.CurrencyManager> implements CurrencyManager {
-    public ApiCurrencyManager(LightEcoPlugin plugin, dev.xhyrom.lighteco.common.manager.currency.CurrencyManager handler) {
-        super(plugin, handler);
+public class ApiCurrencyManager
+        extends ApiAbstractManager<dev.xhyrom.lighteco.common.manager.currency.CurrencyManager>
+        implements CurrencyManager {
+    public ApiCurrencyManager(
+            LightEcoPlugin plugin,
+            dev.xhyrom.lighteco.common.manager.currency.CurrencyManager handle) {
+        super(plugin, handle);
     }
 
-    private Currency wrap(dev.xhyrom.lighteco.common.model.currency.Currency handler) {
-        return handler.getProxy();
+    private Currency wrap(dev.xhyrom.lighteco.common.model.currency.Currency handle) {
+        return handle.getProxy();
     }
 
     @Override
     public @NonNull Collection<Currency> getRegisteredCurrencies() {
-        return this.handler.values()
-                .stream().map(this::wrap)
-                .toList();
+        return this.handle.values().stream().map(this::wrap).toList();
     }
 
     @Override
     public Currency getCurrency(@NonNull String identifier) {
-        return wrap(this.handler.getIfLoaded(identifier));
+        return wrap(this.handle.getIfLoaded(identifier));
     }
 
     @Override
     public void registerCurrency(@NonNull Currency currency) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = new dev.xhyrom.lighteco.common.model.currency.Currency(currency);
-        this.handler.registerCurrency(internal);
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                new dev.xhyrom.lighteco.common.model.currency.Currency(currency);
+        this.handle.registerCurrency(internal);
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiMessagingService.java

@@ -0,0 +1,22 @@
+package dev.xhyrom.lighteco.common.api.impl;
+
+import dev.xhyrom.lighteco.api.messaging.MessagingService;
+import dev.xhyrom.lighteco.api.model.currency.Currency;
+import dev.xhyrom.lighteco.api.model.user.User;
+import dev.xhyrom.lighteco.common.messaging.InternalMessagingService;
+
+public class ApiMessagingService implements MessagingService {
+    private final InternalMessagingService handle;
+
+    public ApiMessagingService(InternalMessagingService handle) {
+        this.handle = handle;
+    }
+
+    @Override
+    public void pushUserUpdate(User user, Currency currency) {
+        dev.xhyrom.lighteco.common.model.currency.Currency internalCurrency =
+                this.handle.getPlugin().getCurrencyManager().getIfLoaded(currency.getIdentifier());
+
+        this.handle.pushUserUpdate(ApiUser.cast(user), internalCurrency);
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiPlatform.java

@@ -2,6 +2,7 @@ package dev.xhyrom.lighteco.common.api.impl;
 
 import dev.xhyrom.lighteco.api.platform.Platform;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 public class ApiPlatform implements Platform {

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiPlayerAdapter.java

@@ -1,9 +1,10 @@
 package dev.xhyrom.lighteco.common.api.impl;
 
 import dev.xhyrom.lighteco.api.manager.ContextManager;
-import dev.xhyrom.lighteco.api.model.user.User;
 import dev.xhyrom.lighteco.api.manager.UserManager;
+import dev.xhyrom.lighteco.api.model.user.User;
 import dev.xhyrom.lighteco.api.platform.PlayerAdapter;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.UUID;

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiUser.java

@@ -2,6 +2,9 @@ package dev.xhyrom.lighteco.common.api.impl;
 
 import dev.xhyrom.lighteco.api.model.currency.Currency;
 import dev.xhyrom.lighteco.api.model.user.User;
+
+import net.kyori.adventure.text.Component;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -9,55 +12,65 @@ import java.math.BigDecimal;
 import java.util.UUID;
 
 public class ApiUser implements User {
-    private final dev.xhyrom.lighteco.common.model.user.User handler;
+    public static dev.xhyrom.lighteco.common.model.user.User cast(User u) {
+        if (u instanceof ApiUser) {
+            return ((ApiUser) u).handle;
+        }
 
-    public ApiUser(dev.xhyrom.lighteco.common.model.user.User handler) {
-        this.handler = handler;
+        throw new IllegalArgumentException(
+                "Cannot cast " + u.getClass().getName() + " to " + ApiUser.class.getName());
+    }
+
+    private final dev.xhyrom.lighteco.common.model.user.User handle;
+
+    public ApiUser(dev.xhyrom.lighteco.common.model.user.User handle) {
+        this.handle = handle;
     }
 
     @Override
     public @NonNull UUID getUniqueId() {
-        return this.handler.getUniqueId();
+        return this.handle.getUniqueId();
     }
 
     @Override
     public @Nullable String getUsername() {
-        return this.handler.getUsername();
+        return this.handle.getUsername();
     }
 
     @Override
     public @NonNull BigDecimal getBalance(@NonNull Currency currency) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.handler.getPlugin()
-                .getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.handle.getPlugin().getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        return this.handler.getBalance(internal);
+        return this.handle.getBalance(internal);
     }
 
     @Override
     public void setBalance(@NonNull Currency currency, @NonNull BigDecimal balance) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.handler.getPlugin()
-                .getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.handle.getPlugin().getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        this.handler.setBalance(internal, balance);
+        this.handle.setBalance(internal, balance);
     }
 
     @Override
     public void deposit(@NonNull Currency currency, @NonNull BigDecimal amount) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.handler.getPlugin()
-                .getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.handle.getPlugin().getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        this.handler.deposit(internal, amount);
+        this.handle.deposit(internal, amount);
     }
 
     @Override
     public void withdraw(@NonNull Currency currency, @NonNull BigDecimal amount) {
-        dev.xhyrom.lighteco.common.model.currency.Currency internal = this.handler.getPlugin()
-                .getCurrencyManager()
-                .getIfLoaded(currency.getIdentifier());
+        dev.xhyrom.lighteco.common.model.currency.Currency internal =
+                this.handle.getPlugin().getCurrencyManager().getIfLoaded(currency.getIdentifier());
 
-        this.handler.withdraw(internal, amount);
+        this.handle.withdraw(internal, amount);
+    }
+
+    @Override
+    public void sendMessage(Component message) {
+        this.handle.sendMessage(message);
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/api/impl/ApiUserManager.java

@@ -3,20 +3,24 @@ package dev.xhyrom.lighteco.common.api.impl;
 import dev.xhyrom.lighteco.api.manager.UserManager;
 import dev.xhyrom.lighteco.api.model.user.User;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 
-public class ApiUserManager extends ApiAbstractManager<dev.xhyrom.lighteco.common.manager.user.UserManager> implements UserManager {
-    public ApiUserManager(LightEcoPlugin plugin, dev.xhyrom.lighteco.common.manager.user.UserManager handler) {
-        super(plugin, handler);
+public class ApiUserManager
+        extends ApiAbstractManager<dev.xhyrom.lighteco.common.manager.user.UserManager>
+        implements UserManager {
+    public ApiUserManager(
+            LightEcoPlugin plugin, dev.xhyrom.lighteco.common.manager.user.UserManager handle) {
+        super(plugin, handle);
     }
 
-    private User wrap(dev.xhyrom.lighteco.common.model.user.User handler) {
-        this.plugin.getUserManager().getHousekeeper().registerUsage(handler.getUniqueId());
-        return handler.getProxy();
+    private User wrap(dev.xhyrom.lighteco.common.model.user.User handle) {
+        this.plugin.getUserManager().getHousekeeper().registerUsage(handle.getUniqueId());
+        return handle.getProxy();
     }
 
     @Override
@@ -26,8 +30,7 @@ public class ApiUserManager extends ApiAbstractManager<dev.xhyrom.lighteco.commo
 
     @Override
     public @NonNull CompletableFuture<User> loadUser(@NonNull UUID uniqueId, String username) {
-        return this.plugin.getStorage().loadUser(uniqueId, username)
-                .thenApply(this::wrap);
+        return this.plugin.getStorage().loadUser(uniqueId, username).thenApply(this::wrap);
     }
 
     @Override
@@ -42,11 +45,11 @@ public class ApiUserManager extends ApiAbstractManager<dev.xhyrom.lighteco.commo
 
     @Override
     public @Nullable User getUser(@NonNull UUID uniqueId) {
-        return wrap(this.handler.getIfLoaded(uniqueId));
+        return wrap(this.handle.getIfLoaded(uniqueId));
     }
 
     @Override
     public boolean isLoaded(@NonNull UUID uniqueId) {
-        return this.handler.isLoaded(uniqueId);
+        return this.handle.isLoaded(uniqueId);
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/cache/ExpiringSet.java

@@ -10,9 +10,7 @@ public class ExpiringSet<T> {
     private final long lifetime;
 
     public ExpiringSet(long duration, TimeUnit unit) {
-        this.cache = CacheBuilder.newBuilder()
-            .expireAfterWrite(duration, unit)
-            .build();
+        this.cache = CacheBuilder.newBuilder().expireAfterWrite(duration, unit).build();
         this.lifetime = unit.toMillis(duration);
     }
 

common/src/main/java/dev/xhyrom/lighteco/common/cache/RedisBackedMap.java

@@ -2,6 +2,4 @@ package dev.xhyrom.lighteco.common.cache;
 
 import java.util.HashMap;
 
-public class RedisBackedMap<T, U> extends HashMap<T, U> {
-
-}
+public class RedisBackedMap<T, U> extends HashMap<T, U> {}

common/src/main/java/dev/xhyrom/lighteco/common/command/CommandHelper.java

@@ -0,0 +1,58 @@
+package dev.xhyrom.lighteco.common.command;
+
+import com.mojang.brigadier.context.CommandContext;
+
+import dev.xhyrom.lighteco.common.command.argument.type.OfflineUserArgument;
+import dev.xhyrom.lighteco.common.command.exception.LockedUserException;
+import dev.xhyrom.lighteco.common.config.message.CurrencyMessageConfig;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import lombok.experimental.UtilityClass;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import java.util.Map;
+
+@UtilityClass
+public class CommandHelper {
+    public static User getUser(CommandContext<CommandSource> context) {
+        LightEcoPlugin plugin = context.getSource().plugin();
+        CommandSender sender = context.getSource().sender();
+
+        User target = null;
+        try {
+            target = OfflineUserArgument.getOfflineUser(context, "target");
+        } catch (LockedUserException e) {
+            sender.sendMessage(
+                    MiniMessage.miniMessage().deserialize(plugin.getConfig().messages.wait));
+        }
+
+        if (target == null || target.getUsername() == null) {
+            String userName = context.getArgument("target", String.class);
+
+            sender.sendMessage(MiniMessage.miniMessage()
+                    .deserialize(
+                            plugin.getConfig().messages.userNotFound,
+                            Placeholder.parsed("username", userName)));
+            return null;
+        }
+
+        return target;
+    }
+
+    public static CurrencyMessageConfig getCurrencyMessageConfig(
+            LightEcoPlugin plugin, Currency currency) {
+        Map<String, CurrencyMessageConfig> config = plugin.getConfig().messages.currency;
+        CurrencyMessageConfig currencyMessageConfig = config.get(currency.getIdentifier());
+
+        if (currencyMessageConfig == null) {
+            return config.get("default");
+        }
+
+        return currencyMessageConfig;
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/command/CommandManager.java

@@ -0,0 +1,146 @@
+package dev.xhyrom.lighteco.common.command;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.ParseResults;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.commands.BalanceCommand;
+import dev.xhyrom.lighteco.common.commands.CurrencyParentCommand;
+import dev.xhyrom.lighteco.common.commands.InfoCommand;
+import dev.xhyrom.lighteco.common.commands.PayCommand;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import lombok.Getter;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.event.ClickEvent;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextDecoration;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+
+import java.util.*;
+import java.util.concurrent.*;
+
+public class CommandManager {
+    protected final LightEcoPlugin plugin;
+    private final ExecutorService executor =
+            Executors.newSingleThreadExecutor(new ThreadFactoryBuilder()
+                    .setDaemon(true)
+                    .setNameFormat("lighteco-command-executor")
+                    .build());
+
+    @Getter
+    private final CommandDispatcher<CommandSource> dispatcher = new CommandDispatcher<>();
+
+    @Getter
+    private final Set<UUID> locks = ConcurrentHashMap.newKeySet();
+
+    private final Map<UUID, UUID> locksMappings = new ConcurrentHashMap<>();
+
+    public CommandManager(LightEcoPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    // Register built-in commands
+    public void register() {
+        register(new InfoCommand());
+    }
+
+    public void register(Currency currency, boolean main) {
+        register(new CurrencyParentCommand(currency));
+
+        if (main) {
+            register(BalanceCommand.create(currency));
+            register(PayCommand.create(currency));
+        }
+    }
+
+    protected void register(Command command) {
+        dispatcher.getRoot().addChild(command.build());
+    }
+
+    public void execute(CommandSender sender, String name, String[] args) {
+        if (!sender.isConsole() && locks.contains(sender.getUniqueId())) {
+            sender.sendMessage(
+                    MiniMessage.miniMessage().deserialize(this.plugin.getConfig().messages.wait));
+            return;
+        }
+
+        final CommandSource source = new CommandSource(this.plugin, sender);
+        final ParseResults<CommandSource> parseResults = dispatcher.parse(
+                name + (args.length > 0 ? " " + String.join(" ", args) : ""), source);
+
+        if (!sender.isConsole()) locks.add(sender.getUniqueId());
+
+        CompletableFuture.runAsync(
+                () -> {
+                    try {
+                        dispatcher.execute(parseResults);
+                    } catch (CommandSyntaxException e) {
+                        this.sendError(sender, name, e);
+                    } finally {
+                        if (!source.sender().isConsole()) {
+                            this.plugin
+                                    .getBootstrap()
+                                    .getLogger()
+                                    .debug("Removing lock for " + sender.getUsername());
+
+                            UUID target = locksMappings.get(sender.getUniqueId());
+                            if (target != null) {
+                                locks.remove(target);
+                                locksMappings.remove(sender.getUniqueId());
+
+                                this.plugin
+                                        .getBootstrap()
+                                        .getLogger()
+                                        .debug("Removing lock caused by " + sender.getUsername()
+                                                + " for " + target);
+                            }
+
+                            locks.remove(sender.getUniqueId());
+                        }
+                    }
+                },
+                executor);
+    }
+
+    public void lockBySender(CommandSender sender, UUID target) {
+        locks.add(target);
+        locksMappings.put(sender.getUniqueId(), target);
+    }
+
+    private void sendError(CommandSender sender, String name, CommandSyntaxException e) {
+        sender.sendMessage(Component.text(e.getRawMessage().getString(), NamedTextColor.RED));
+
+        if (e.getInput() != null && e.getCursor() >= 0) {
+            int j = Math.min(e.getInput().length(), e.getCursor());
+
+            Component msg = Component.empty()
+                    .color(NamedTextColor.GRAY)
+                    .clickEvent(
+                            ClickEvent.clickEvent(ClickEvent.Action.SUGGEST_COMMAND, "/" + name));
+
+            if (j > 10) {
+                msg = msg.append(Component.text("..."));
+            }
+
+            msg = msg.append(Component.text(e.getInput().substring(Math.max(0, j - 10), j)));
+
+            if (j < e.getInput().length()) {
+                Component component = Component.text(e.getInput().substring(j))
+                        .color(NamedTextColor.RED)
+                        .decorate(TextDecoration.UNDERLINED);
+                msg = msg.append(component);
+            }
+
+            msg = msg.append(Component.translatable("command.context.here")
+                    .color(NamedTextColor.RED)
+                    .decorate(TextDecoration.ITALIC));
+            sender.sendMessage(msg);
+        }
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/command/CommandSource.java

@@ -0,0 +1,8 @@
+package dev.xhyrom.lighteco.common.command;
+
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public record CommandSource(@NonNull LightEcoPlugin plugin, @NonNull CommandSender sender) {}

common/src/main/java/dev/xhyrom/lighteco/common/command/abstraction/Command.java

@@ -0,0 +1,36 @@
+package dev.xhyrom.lighteco.common.command.abstraction;
+
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+
+import lombok.Getter;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@Getter
+public abstract class Command {
+    @NonNull protected final String name;
+
+    @NonNull private final String description;
+
+    @NonNull private final List<String> aliases = new ArrayList<>();
+
+    public Command(@NonNull String name, @NonNull String description, String... aliases) {
+        this.name = name;
+        this.description = description;
+
+        Collections.addAll(this.aliases, aliases);
+    }
+
+    public abstract CommandNode<CommandSource> build();
+
+    protected LiteralArgumentBuilder<CommandSource> builder() {
+        return LiteralArgumentBuilder.literal(name);
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/command/argument/type/OfflineUserArgument.java

@@ -0,0 +1,46 @@
+package dev.xhyrom.lighteco.common.command.argument.type;
+
+import com.mojang.brigadier.StringReader;
+import com.mojang.brigadier.arguments.ArgumentType;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.exception.LockedUserException;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import java.util.UUID;
+
+public class OfflineUserArgument implements ArgumentType<String> {
+    private OfflineUserArgument() {}
+
+    public static User getOfflineUser(CommandContext<CommandSource> context, String name)
+            throws LockedUserException {
+        String userName = context.getArgument(name, String.class);
+        LightEcoPlugin plugin = context.getSource().plugin();
+        CommandSender sender = context.getSource().sender();
+
+        UUID uniqueId = plugin.getBootstrap().lookupUniqueId(userName).orElse(null);
+        if (uniqueId == null) {
+            return null;
+        }
+
+        if (sender.getUniqueId() != uniqueId
+                && plugin.getCommandManager().getLocks().contains(uniqueId)) {
+            throw new LockedUserException(uniqueId);
+        }
+
+        // Lock the user to prevent race conditions
+        if (!sender.isConsole())
+            plugin.getCommandManager().lockBySender(context.getSource().sender(), uniqueId);
+
+        return plugin.getUserManager().loadUser(uniqueId).join();
+    }
+
+    @Override
+    public String parse(StringReader reader) throws CommandSyntaxException {
+        return reader.readString();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/command/exception/LockedUserException.java

@@ -0,0 +1,9 @@
+package dev.xhyrom.lighteco.common.command.exception;
+
+import java.util.UUID;
+
+public class LockedUserException extends Exception {
+    public LockedUserException(UUID uniqueId) {
+        super("User with uuid " + uniqueId + " is currently locked thus cannot be modified");
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/command/suggestion/type/OfflineUserSuggestionProvider.java

@@ -0,0 +1,36 @@
+package dev.xhyrom.lighteco.common.command.suggestion.type;
+
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.suggestion.SuggestionProvider;
+import com.mojang.brigadier.suggestion.Suggestions;
+import com.mojang.brigadier.suggestion.SuggestionsBuilder;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+
+public class OfflineUserSuggestionProvider implements SuggestionProvider<CommandSource> {
+    public static OfflineUserSuggestionProvider create() {
+        return new OfflineUserSuggestionProvider();
+    }
+
+    @Override
+    public CompletableFuture<Suggestions> getSuggestions(
+            CommandContext<CommandSource> context, SuggestionsBuilder builder) {
+        LightEcoPlugin plugin = context.getSource().plugin();
+
+        String remaining = builder.getRemaining();
+
+        for (UUID uniqueId : plugin.getBootstrap().getOnlinePlayers()) {
+            User user = plugin.getUserManager().getIfLoaded(uniqueId);
+            if (user == null) continue;
+
+            builder.suggest(user.getUsername());
+        }
+
+        return builder.buildFuture();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/BalanceCommand.java

@@ -0,0 +1,89 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.*;
+
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.command.suggestion.type.OfflineUserSuggestionProvider;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+
+public class BalanceCommand extends Command {
+    private final Currency currency;
+
+    public static BalanceCommand create(@NonNull Currency currency) {
+        return new BalanceCommand(currency);
+    }
+
+    public BalanceCommand(@NonNull Currency currency) {
+        super("balance", "Check your balance");
+
+        this.currency = currency;
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        return builder()
+                .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                "target", StringArgumentType.word())
+                        .suggests(OfflineUserSuggestionProvider.create())
+                        .requires((source) -> source.sender()
+                                .eligible("lighteco.currency." + currency.getIdentifier()
+                                        + ".command.balance.others"))
+                        .executes(context -> {
+                            LightEcoPlugin plugin = context.getSource().plugin();
+                            CommandSender sender = context.getSource().sender();
+
+                            final User target = getUser(context);
+                            if (target == null) return SINGLE_SUCCESS;
+
+                            BigDecimal balance = target.getBalance(currency);
+
+                            sender.sendMessage(MiniMessage.miniMessage()
+                                    .deserialize(
+                                            getCurrencyMessageConfig(plugin, currency)
+                                                    .balanceOthers,
+                                            Placeholder.parsed(
+                                                    "currency", currency.getIdentifier()),
+                                            Placeholder.parsed("target", target.getUsername()),
+                                            Placeholder.parsed(
+                                                    "balance", balance.toPlainString())));
+
+                            return SINGLE_SUCCESS;
+                        }))
+                .requires((source) -> source.sender()
+                        .eligible("lighteco.currency." + currency.getIdentifier()
+                                + ".command.balance"))
+                .executes(context -> {
+                    LightEcoPlugin plugin = context.getSource().plugin();
+                    CommandSender sender = context.getSource().sender();
+
+                    User user = plugin.getUserManager().getIfLoaded(sender.getUniqueId());
+                    BigDecimal balance = user.getBalance(currency);
+
+                    sender.sendMessage(MiniMessage.miniMessage()
+                            .deserialize(
+                                    getCurrencyMessageConfig(plugin, currency).balance,
+                                    Placeholder.parsed("currency", currency.getIdentifier()),
+                                    Placeholder.parsed("balance", balance.toPlainString())));
+
+                    return SINGLE_SUCCESS;
+                })
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/CurrencyParentCommand.java

@@ -0,0 +1,61 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.getCurrencyMessageConfig;
+
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+
+public class CurrencyParentCommand extends Command {
+    private final Currency currency;
+
+    public CurrencyParentCommand(@NonNull Currency currency) {
+        super(currency.getIdentifier(), currency.getIdentifier());
+
+        this.currency = currency;
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        LiteralArgumentBuilder<CommandSource> builder = builder()
+                .then(BalanceCommand.create(currency).build())
+                .then(SetCommand.create(currency).build())
+                .then(GiveCommand.create(currency).build())
+                .then(TakeCommand.create(currency).build())
+                .executes(context -> {
+                    LightEcoPlugin plugin = context.getSource().plugin();
+                    CommandSender sender = context.getSource().sender();
+
+                    User user = plugin.getUserManager().getIfLoaded(sender.getUniqueId());
+                    BigDecimal balance = user.getBalance(currency);
+
+                    sender.sendMessage(MiniMessage.miniMessage()
+                            .deserialize(
+                                    getCurrencyMessageConfig(plugin, currency).balance,
+                                    Placeholder.parsed("currency", currency.getIdentifier()),
+                                    Placeholder.parsed("balance", balance.toPlainString())));
+
+                    return SINGLE_SUCCESS;
+                });
+
+        if (currency.isPayable())
+            builder = builder.then(PayCommand.create(currency).build());
+
+        return builder.build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/GiveCommand.java

@@ -0,0 +1,116 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.*;
+
+import com.mojang.brigadier.arguments.DoubleArgumentType;
+import com.mojang.brigadier.arguments.IntegerArgumentType;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.command.suggestion.type.OfflineUserSuggestionProvider;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class GiveCommand extends Command {
+    private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+    private final Currency currency;
+
+    public static GiveCommand create(@NonNull Currency currency) {
+        return new GiveCommand(currency);
+    }
+
+    public GiveCommand(@NonNull Currency currency) {
+        super("give", "Give a player some money");
+
+        this.currency = currency;
+    }
+
+    private void execute(CommandContext<CommandSource> context) {
+        final LightEcoPlugin plugin = context.getSource().plugin();
+        final CommandSender sender = context.getSource().sender();
+
+        final User target = getUser(context);
+        if (target == null) return;
+
+        BigDecimal amount = BigDecimal.valueOf(
+                currency.fractionalDigits() > 0
+                        ? context.getArgument("amount", Double.class)
+                        : context.getArgument("amount", Integer.class));
+
+        amount = amount.setScale(currency.fractionalDigits(), RoundingMode.DOWN);
+
+        try {
+            target.deposit(currency, amount);
+        } catch (CannotBeGreaterThan e) {
+            sender.sendMessage(miniMessage.deserialize(
+                    getCurrencyMessageConfig(plugin, this.currency).cannotBeGreaterThan,
+                    Placeholder.parsed("max", plugin.getConfig().maximumBalance.toPlainString())));
+
+            return;
+        }
+
+        sender.sendMessage(miniMessage.deserialize(
+                getCurrencyMessageConfig(plugin, this.currency).set,
+                Placeholder.parsed("currency", currency.getIdentifier()),
+                Placeholder.parsed("target", target.getUsername()),
+                Placeholder.parsed("amount", amount.toPlainString())));
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        if (currency.fractionalDigits() > 0) {
+            return builder()
+                    .requires((source) -> source.sender()
+                            .eligible("lighteco.currency." + currency.getIdentifier()
+                                    + ".command.give"))
+                    .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                    "target", StringArgumentType.word())
+                            .suggests(OfflineUserSuggestionProvider.create())
+                            .then(RequiredArgumentBuilder.<CommandSource, Double>argument(
+                                            "amount", DoubleArgumentType.doubleArg(1))
+                                    .requires((source) -> source.sender()
+                                            .eligible("lighteco.currency."
+                                                    + currency.getIdentifier() + ".command.give"))
+                                    .executes(c -> {
+                                        execute(c);
+                                        return SINGLE_SUCCESS;
+                                    })))
+                    .build();
+        }
+
+        return builder()
+                .requires((source) -> source.sender()
+                        .eligible(
+                                "lighteco.currency." + currency.getIdentifier() + ".command.give"))
+                .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                "target", StringArgumentType.word())
+                        .suggests(OfflineUserSuggestionProvider.create())
+                        .then(RequiredArgumentBuilder.<CommandSource, Integer>argument(
+                                        "amount", IntegerArgumentType.integer(1))
+                                .requires((source) -> source.sender()
+                                        .eligible("lighteco.currency." + currency.getIdentifier()
+                                                + ".command.give"))
+                                .executes(c -> {
+                                    execute(c);
+                                    return SINGLE_SUCCESS;
+                                })))
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/InfoCommand.java

@@ -0,0 +1,40 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+public class InfoCommand extends Command {
+    public InfoCommand() {
+        super("lighteco", "LightEco information");
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        return builder()
+                .requires(source -> source.sender().eligible("lighteco.command.info"))
+                .executes(context -> {
+                    LightEcoPlugin plugin = context.getSource().plugin();
+                    CommandSender sender = context.getSource().sender();
+
+                    sender.sendMessage(MiniMessage.miniMessage()
+                            .deserialize(
+                                    "<#fa5246><bold>LightEco</bold></#fa5246> <dark_gray>(<#d6766f>v<version><dark_gray>) <white>on <#d6766f><platform>",
+                                    Placeholder.parsed(
+                                            "version", plugin.getBootstrap().getVersion()),
+                                    Placeholder.parsed(
+                                            "platform", plugin.getPlatformType().getName())));
+
+                    return SINGLE_SUCCESS;
+                })
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/PayCommand.java

@@ -0,0 +1,160 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.*;
+
+import com.mojang.brigadier.arguments.DoubleArgumentType;
+import com.mojang.brigadier.arguments.IntegerArgumentType;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.command.suggestion.type.OfflineUserSuggestionProvider;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class PayCommand extends Command {
+    private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+    private final Currency currency;
+
+    public static PayCommand create(@NonNull Currency currency) {
+        return new PayCommand(currency);
+    }
+
+    public PayCommand(@NonNull Currency currency) {
+        super("pay", "Pay a player");
+
+        this.currency = currency;
+    }
+
+    private void execute(CommandContext<CommandSource> context) {
+        final LightEcoPlugin plugin = context.getSource().plugin();
+        final CommandSender sender = context.getSource().sender();
+
+        final User target = getUser(context);
+        if (target == null) return;
+
+        BigDecimal amount = BigDecimal.valueOf(
+                currency.fractionalDigits() > 0
+                        ? context.getArgument("amount", Double.class)
+                        : context.getArgument("amount", Integer.class));
+
+        amount = amount.setScale(currency.fractionalDigits(), RoundingMode.DOWN);
+
+        final User user = plugin.getUserManager().getIfLoaded(sender.getUniqueId());
+        if (user == null) {
+            return;
+        }
+
+        if (user.getBalance(this.currency).compareTo(amount) < 0) {
+            sender.sendMessage(miniMessage.deserialize(
+                    getCurrencyMessageConfig(plugin, this.currency).notEnoughMoney));
+
+            return;
+        }
+
+        // calculate tax using Currency#calculateTax
+        BigDecimal tax = currency.getProxy().calculateTax(user.getProxy(), amount);
+        tax = tax.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
+
+        // subtract tax from amount
+        BigDecimal taxedAmount = amount.subtract(tax);
+
+        try {
+            target.deposit(currency, taxedAmount);
+            user.withdraw(currency, amount);
+        } catch (CannotBeGreaterThan e) {
+            sender.sendMessage(miniMessage.deserialize(
+                    getCurrencyMessageConfig(plugin, this.currency).cannotBeGreaterThan,
+                    Placeholder.parsed("max", plugin.getConfig().maximumBalance.toPlainString())));
+
+            return;
+        }
+
+        String template = tax.compareTo(BigDecimal.ZERO) > 0
+                ? getCurrencyMessageConfig(plugin, this.currency).payWithTax
+                : getCurrencyMessageConfig(plugin, this.currency).pay;
+
+        String templateReceived = tax.compareTo(BigDecimal.ZERO) > 0
+                ? getCurrencyMessageConfig(plugin, this.currency).payReceivedWithTax
+                : getCurrencyMessageConfig(plugin, this.currency).payReceived;
+
+        sender.sendMessage(miniMessage.deserialize(
+                template,
+                Placeholder.parsed("currency", currency.getIdentifier()),
+                Placeholder.parsed("target", target.getUsername()),
+                Placeholder.parsed("amount", amount.toPlainString()),
+                Placeholder.parsed("taxed_amount", taxedAmount.toPlainString()),
+                Placeholder.parsed("sender_balance", user.getBalance(currency).toPlainString()),
+                Placeholder.parsed(
+                        "receiver_balance", target.getBalance(currency).toPlainString())));
+
+        target.sendMessage(miniMessage.deserialize(
+                templateReceived,
+                Placeholder.parsed("currency", currency.getIdentifier()),
+                Placeholder.parsed("sender", user.getUsername()),
+                Placeholder.parsed("amount", amount.toPlainString()),
+                Placeholder.parsed("taxed_amount", taxedAmount.toPlainString()),
+                Placeholder.parsed("sender_balance", user.getBalance(currency).toPlainString()),
+                Placeholder.parsed(
+                        "receiver_balance", target.getBalance(currency).toPlainString())));
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        if (currency.fractionalDigits() > 0) {
+            return builder()
+                    .requires((source) -> !source.sender().isConsole()
+                            && source.sender()
+                                    .eligible("lighteco.currency." + currency.getIdentifier()
+                                            + ".command.pay"))
+                    .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                    "target", StringArgumentType.word())
+                            .suggests(OfflineUserSuggestionProvider.create())
+                            .then(RequiredArgumentBuilder.<CommandSource, Double>argument(
+                                            "amount", DoubleArgumentType.doubleArg(1))
+                                    .requires((source) -> source.sender()
+                                            .eligible("lighteco.currency."
+                                                    + currency.getIdentifier() + ".command.pay"))
+                                    .executes(c -> {
+                                        execute(c);
+                                        return SINGLE_SUCCESS;
+                                    })))
+                    .build();
+        }
+
+        return builder()
+                .requires((source) -> !source.sender().isConsole()
+                        && source.sender()
+                                .eligible("lighteco.currency." + currency.getIdentifier()
+                                        + ".command.pay"))
+                .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                "target", StringArgumentType.word())
+                        .suggests(OfflineUserSuggestionProvider.create())
+                        .then(RequiredArgumentBuilder.<CommandSource, Integer>argument(
+                                        "amount", IntegerArgumentType.integer(1))
+                                .requires((source) -> source.sender()
+                                        .eligible("lighteco.currency." + currency.getIdentifier()
+                                                + ".command.pay"))
+                                .executes(c -> {
+                                    execute(c);
+                                    return SINGLE_SUCCESS;
+                                })))
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/SetCommand.java

@@ -0,0 +1,115 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.*;
+
+import com.mojang.brigadier.arguments.DoubleArgumentType;
+import com.mojang.brigadier.arguments.IntegerArgumentType;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.command.suggestion.type.OfflineUserSuggestionProvider;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class SetCommand extends Command {
+    private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+    private final Currency currency;
+
+    public static SetCommand create(@NonNull Currency currency) {
+        return new SetCommand(currency);
+    }
+
+    public SetCommand(@NonNull Currency currency) {
+        super("set", "Set a player's balance");
+
+        this.currency = currency;
+    }
+
+    private void execute(CommandContext<CommandSource> context) {
+        final LightEcoPlugin plugin = context.getSource().plugin();
+        final CommandSender sender = context.getSource().sender();
+
+        final User target = getUser(context);
+        if (target == null) return;
+
+        BigDecimal amount = BigDecimal.valueOf(
+                currency.fractionalDigits() > 0
+                        ? context.getArgument("amount", Double.class)
+                        : context.getArgument("amount", Integer.class));
+
+        amount = amount.setScale(currency.fractionalDigits(), RoundingMode.DOWN);
+
+        try {
+            target.setBalance(currency, amount);
+        } catch (CannotBeGreaterThan e) {
+            sender.sendMessage(miniMessage.deserialize(
+                    getCurrencyMessageConfig(plugin, this.currency).cannotBeGreaterThan,
+                    Placeholder.parsed("max", plugin.getConfig().maximumBalance.toPlainString())));
+
+            return;
+        }
+
+        sender.sendMessage(miniMessage.deserialize(
+                getCurrencyMessageConfig(plugin, this.currency).set,
+                Placeholder.parsed("currency", currency.getIdentifier()),
+                Placeholder.parsed("target", target.getUsername()),
+                Placeholder.parsed("amount", amount.toPlainString())));
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        if (currency.fractionalDigits() > 0) {
+            return builder()
+                    .requires((source) -> source.sender()
+                            .eligible("lighteco.currency." + currency.getIdentifier()
+                                    + ".command.set"))
+                    .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                    "target", StringArgumentType.word())
+                            .suggests(OfflineUserSuggestionProvider.create())
+                            .then(RequiredArgumentBuilder.<CommandSource, Double>argument(
+                                            "amount", DoubleArgumentType.doubleArg(1))
+                                    .requires((source) -> source.sender()
+                                            .eligible("lighteco.currency."
+                                                    + currency.getIdentifier() + ".command.set"))
+                                    .executes(c -> {
+                                        execute(c);
+                                        return SINGLE_SUCCESS;
+                                    })))
+                    .build();
+        }
+
+        return builder()
+                .requires((source) -> source.sender()
+                        .eligible("lighteco.currency." + currency.getIdentifier() + ".command.set"))
+                .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                "target", StringArgumentType.word())
+                        .suggests(OfflineUserSuggestionProvider.create())
+                        .then(RequiredArgumentBuilder.<CommandSource, Integer>argument(
+                                        "amount", IntegerArgumentType.integer(1))
+                                .requires((source) -> source.sender()
+                                        .eligible("lighteco.currency." + currency.getIdentifier()
+                                                + ".command.set"))
+                                .executes(c -> {
+                                    execute(c);
+                                    return SINGLE_SUCCESS;
+                                })))
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/commands/TakeCommand.java

@@ -0,0 +1,116 @@
+package dev.xhyrom.lighteco.common.commands;
+
+import static com.mojang.brigadier.Command.SINGLE_SUCCESS;
+
+import static dev.xhyrom.lighteco.common.command.CommandHelper.*;
+
+import com.mojang.brigadier.arguments.DoubleArgumentType;
+import com.mojang.brigadier.arguments.IntegerArgumentType;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.builder.RequiredArgumentBuilder;
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.tree.CommandNode;
+
+import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
+import dev.xhyrom.lighteco.common.command.CommandSource;
+import dev.xhyrom.lighteco.common.command.abstraction.Command;
+import dev.xhyrom.lighteco.common.command.suggestion.type.OfflineUserSuggestionProvider;
+import dev.xhyrom.lighteco.common.model.chat.CommandSender;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class TakeCommand extends Command {
+    private static final MiniMessage miniMessage = MiniMessage.miniMessage();
+    private final Currency currency;
+
+    public static TakeCommand create(@NonNull Currency currency) {
+        return new TakeCommand(currency);
+    }
+
+    public TakeCommand(@NonNull Currency currency) {
+        super("take", "Take money from a player");
+
+        this.currency = currency;
+    }
+
+    private void execute(CommandContext<CommandSource> context) {
+        final LightEcoPlugin plugin = context.getSource().plugin();
+        final CommandSender sender = context.getSource().sender();
+
+        final User target = getUser(context);
+        if (target == null) return;
+
+        BigDecimal amount = BigDecimal.valueOf(
+                currency.fractionalDigits() > 0
+                        ? context.getArgument("amount", Double.class)
+                        : context.getArgument("amount", Integer.class));
+
+        amount = amount.setScale(currency.fractionalDigits(), RoundingMode.DOWN);
+
+        try {
+            target.withdraw(currency, amount);
+        } catch (CannotBeGreaterThan e) {
+            sender.sendMessage(miniMessage.deserialize(
+                    getCurrencyMessageConfig(plugin, this.currency).cannotBeGreaterThan,
+                    Placeholder.parsed("max", plugin.getConfig().maximumBalance.toPlainString())));
+
+            return;
+        }
+
+        sender.sendMessage(miniMessage.deserialize(
+                getCurrencyMessageConfig(plugin, this.currency).set,
+                Placeholder.parsed("currency", currency.getIdentifier()),
+                Placeholder.parsed("target", target.getUsername()),
+                Placeholder.parsed("amount", amount.toPlainString())));
+    }
+
+    @Override
+    public CommandNode<CommandSource> build() {
+        if (currency.fractionalDigits() > 0) {
+            return builder()
+                    .requires((source) -> source.sender()
+                            .eligible("lighteco.currency." + currency.getIdentifier()
+                                    + ".command.take"))
+                    .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                    "target", StringArgumentType.word())
+                            .suggests(OfflineUserSuggestionProvider.create())
+                            .then(RequiredArgumentBuilder.<CommandSource, Double>argument(
+                                            "amount", DoubleArgumentType.doubleArg(1))
+                                    .requires((source) -> source.sender()
+                                            .eligible("lighteco.currency."
+                                                    + currency.getIdentifier() + ".command.take"))
+                                    .executes(c -> {
+                                        execute(c);
+                                        return SINGLE_SUCCESS;
+                                    })))
+                    .build();
+        }
+
+        return builder()
+                .requires((source) -> source.sender()
+                        .eligible(
+                                "lighteco.currency." + currency.getIdentifier() + ".command.take"))
+                .then(RequiredArgumentBuilder.<CommandSource, String>argument(
+                                "target", StringArgumentType.word())
+                        .suggests(OfflineUserSuggestionProvider.create())
+                        .then(RequiredArgumentBuilder.<CommandSource, Integer>argument(
+                                        "amount", IntegerArgumentType.integer(1))
+                                .requires((source) -> source.sender()
+                                        .eligible("lighteco.currency." + currency.getIdentifier()
+                                                + ".command.take"))
+                                .executes(c -> {
+                                    execute(c);
+                                    return SINGLE_SUCCESS;
+                                })))
+                .build();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/config/Config.java

@@ -2,7 +2,9 @@ package dev.xhyrom.lighteco.common.config;
 
 import dev.xhyrom.lighteco.common.config.housekeeper.HousekeeperConfig;
 import dev.xhyrom.lighteco.common.config.message.MessageConfig;
+import dev.xhyrom.lighteco.common.config.messaging.MessagingConfig;
 import dev.xhyrom.lighteco.common.config.storage.StorageConfig;
+
 import eu.okaeri.configs.OkaeriConfig;
 import eu.okaeri.configs.annotation.Comment;
 import eu.okaeri.configs.annotation.Header;
@@ -13,18 +15,23 @@ import java.math.BigDecimal;
 @Header("")
 public class Config extends OkaeriConfig {
     @Comment("This property must be unique for each server.")
-    @Comment("If you have multiple servers, you must set this property to a different value for each server.")
+    @Comment(
+            "If you have multiple servers, you must set this property to a different value for each server.")
     @Comment("Used for local currencies.")
     public String server = "none";
 
     @Comment("Storage settings.")
     public StorageConfig storage = new StorageConfig();
 
+    @Comment("Messaging settings.")
+    public MessagingConfig messaging = new MessagingConfig();
+
     @Comment("Save interval to storage in seconds.")
     public long saveInterval = 5L;
 
     @Comment("Maximum allowed balance.")
-    @Comment("If you want to change this value, you must also change the data type in the database.")
+    @Comment(
+            "If you want to change this value, you must also change the data type in the database.")
     public BigDecimal maximumBalance = BigDecimal.valueOf(999999999999999.99);
 
     @Comment("Messages")

common/src/main/java/dev/xhyrom/lighteco/common/config/housekeeper/HousekeeperConfig.java

@@ -8,9 +8,11 @@ import java.util.concurrent.TimeUnit;
 public class HousekeeperConfig extends OkaeriConfig {
     @Comment("How long should the cache be kept after the last write")
     public int expireAfterWrite = 300;
+
     public TimeUnit expireAfterWriteUnit = TimeUnit.SECONDS;
 
     @Comment("How often should housekeeper run")
     public int runInterval = 60;
+
     public TimeUnit runIntervalUnit = TimeUnit.SECONDS;
 }

common/src/main/java/dev/xhyrom/lighteco/common/config/message/CurrencyMessageConfig.java

@@ -4,18 +4,29 @@ import eu.okaeri.configs.OkaeriConfig;
 import eu.okaeri.configs.annotation.Variable;
 
 public class CurrencyMessageConfig extends OkaeriConfig {
-    public String balance = "<currency> <dark_gray>| <gray>Your balance: <yellow><balance> </yellow></gray>";
+    public String balance =
+            "<currency> <dark_gray>| <gray>Your balance: <yellow><balance> </yellow></gray>";
+
     @Variable("balance-others")
-    public String balanceOthers = "<currency> <dark_gray>| <gray>Balance of <yellow><target> <dark_gray>| <gray><yellow><balance> </yellow></gray>";
+    public String balanceOthers =
+            "<currency> <dark_gray>| <gray>Balance of <yellow><target> <dark_gray>| <gray><yellow><balance> </yellow></gray>";
 
-    public String set = "<currency> <dark_gray>| <gray>Set balance of <gold><target> <yellow>to <gold><amount>";
-    public String give = "<currency> <dark_gray>| <gray>Gave <gold><target> <gold><amount> <dark_gray>| <gold><balance>";
-    public String take = "<currency> <dark_gray>| <gray>Took <gold><amount> <yellow>from <gold><target>";
+    public String set =
+            "<currency> <dark_gray>| <gray>Set balance of <gold><target> <yellow>to <gold><amount>";
+    public String give =
+            "<currency> <dark_gray>| <gray>Gave <gold><target> <gold><amount> <dark_gray>| <gold><balance>";
+    public String take =
+            "<currency> <dark_gray>| <gray>Took <gold><amount> <yellow>from <gold><target>";
 
-    public String pay = "<currency> <dark_gray>| <gray>Paid <gold><amount> <yellow>to <gold><target>";
-    public String payWithTax = "<currency> <dark_gray>| <gray>Paid <gold><amount> <yellow>to <gold><target> <dark_gray>(<gold><taxed_amount> <yellow>after tax<dark_gray>)";
+    public String pay =
+            "<currency> <dark_gray>| <gray>Paid <gold><amount> <yellow>to <gold><target>";
+    public String payWithTax =
+            "<currency> <dark_gray>| <gray>Paid <gold><amount> <yellow>to <gold><target> <dark_gray>(<gold><taxed_amount> <yellow>after tax<dark_gray>)";
+    public String payReceived =
+            "<currency> <dark_gray>| <gray>Received <gold><amount> <yellow>from <gold><sender>";
+    public String payReceivedWithTax =
+            "<currency> <dark_gray>| <gray>Received <gold><amount> <yellow>from <gold><sender> <dark_gray>(<gold><taxed_amount> <yellow>after tax<dark_gray>)";
 
-    public String wait = "<red>Please wait a moment before using this command again.";
     public String notEnoughMoney = "<red>You don't have enough money!";
     public String cannotPaySelf = "<red>You cannot pay yourself!";
     public String cannotBeGreaterThan = "<red>Amount cannot be greater than <gold><max>";

common/src/main/java/dev/xhyrom/lighteco/common/config/message/MessageConfig.java

@@ -6,5 +6,9 @@ import java.util.Collections;
 import java.util.Map;
 
 public class MessageConfig extends OkaeriConfig {
-    public Map<String, CurrencyMessageConfig> currency = Collections.singletonMap("default", new CurrencyMessageConfig());
+    public Map<String, CurrencyMessageConfig> currency =
+            Collections.singletonMap("default", new CurrencyMessageConfig());
+
+    public String wait = "<red>Please wait a moment before using this command again.";
+    public String userNotFound = "<red>User <username> not found.";
 }

common/src/main/java/dev/xhyrom/lighteco/common/config/messaging/MessagingConfig.java

@@ -0,0 +1,16 @@
+package dev.xhyrom.lighteco.common.config.messaging;
+
+import dev.xhyrom.lighteco.common.messaging.MessagingType;
+
+import eu.okaeri.configs.OkaeriConfig;
+import eu.okaeri.configs.annotation.Comment;
+
+public class MessagingConfig extends OkaeriConfig {
+    @Comment("Messaging provider.")
+    @Comment("Available providers: redis")
+    public MessagingType provider = MessagingType.NONE;
+
+    @Comment("Data storage settings.")
+    @Comment("You don't need to worry about this if you're using plugin message.")
+    public MessagingDataConfig data = new MessagingDataConfig();
+}

common/src/main/java/dev/xhyrom/lighteco/common/config/messaging/MessagingDataConfig.java

@@ -0,0 +1,17 @@
+package dev.xhyrom.lighteco.common.config.messaging;
+
+import eu.okaeri.configs.OkaeriConfig;
+import eu.okaeri.configs.annotation.Comment;
+
+public class MessagingDataConfig extends OkaeriConfig {
+    @Comment("Define the address and port of the messaging service.")
+    public String address = "localhost";
+
+    @Comment("Credentials for connecting to the messaging service.")
+    public String username = "root";
+
+    public String password = "password";
+
+    @Comment("Whether to use SSL to connect to the messaging service.")
+    public boolean ssl = false;
+}

common/src/main/java/dev/xhyrom/lighteco/common/config/storage/StorageConfig.java

@@ -1,6 +1,7 @@
 package dev.xhyrom.lighteco.common.config.storage;
 
 import dev.xhyrom.lighteco.common.storage.StorageType;
+
 import eu.okaeri.configs.OkaeriConfig;
 import eu.okaeri.configs.annotation.Comment;
 

common/src/main/java/dev/xhyrom/lighteco/common/config/storage/StorageDataConfig.java

@@ -12,6 +12,7 @@ public class StorageDataConfig extends OkaeriConfig {
 
     @Comment("Credentials for connecting to the database.")
     public String username = "root";
+
     public String password = "password";
 
     @Comment("Maximum number of connections in the pool.")

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/Dependency.java

@@ -1,7 +1,9 @@
 package dev.xhyrom.lighteco.common.dependencies;
 
 import com.google.common.collect.ImmutableList;
+
 import dev.xhyrom.lighteco.common.dependencies.relocation.Relocation;
+
 import lombok.Getter;
 
 import java.util.List;
@@ -12,59 +14,40 @@ public enum Dependency {
      * Somewhere we use brackets instad of dots, so we need to rewrite them
      * This is because gradle's shadow plugin relocates using replacing full paths (dots)
      */
-
-    ASM(
-            "org.ow2.asm",
-            "asm",
-            "9.1"
-    ),
-    ASM_COMMONS(
-            "org.ow2.asm",
-            "asm-commons",
-            "9.1"
-    ),
-    JAR_RELOCATOR(
-            "me.lucko",
-            "jar-relocator",
-            "1.7"
-    ),
-    HIKARI(
-            "com{}zaxxer",
-            "HikariCP",
-            "5.0.1",
-            Relocation.of("hikari", "com{}zaxxer{}hikari")
-    ),
-    H2_DRIVER(
-            "com.h2database",
-            "h2",
-            "2.1.214"
-    ),
-    SQLITE_DRIVER(
-            "org.xerial",
-            "sqlite-jdbc",
-            "3.28.0"
-    ),
+    ASM("org.ow2.asm", "asm", "9.1"),
+    ASM_COMMONS("org.ow2.asm", "asm-commons", "9.1"),
+    JAR_RELOCATOR("me.lucko", "jar-relocator", "1.7"),
+    HIKARI("com{}zaxxer", "HikariCP", "5.0.1", Relocation.of("hikari", "com{}zaxxer{}hikari")),
+    H2_DRIVER("com.h2database", "h2", "2.1.214"),
+    SQLITE_DRIVER("org.xerial", "sqlite-jdbc", "3.28.0"),
     MARIADB_DRIVER(
             "org{}mariadb{}jdbc",
             "mariadb-java-client",
             "3.1.3",
-            Relocation.of("mariadb", "org{}mariadb{}jdbc")
-    ),
-    MYSQL_DRIVER(
-            "mysql",
-            "mysql-connector-java",
-            "8.0.23",
-            Relocation.of("mysql", "com{}mysql")
-    ),
+            Relocation.of("mariadb", "org{}mariadb{}jdbc")),
+    MYSQL_DRIVER("mysql", "mysql-connector-java", "8.0.23", Relocation.of("mysql", "com{}mysql")),
     POSTGRESQL_DRIVER(
             "org{}postgresql",
             "postgresql",
             "42.6.0",
-            Relocation.of("postgresql", "org{}postgresql")
-    );
+            Relocation.of("postgresql", "org{}postgresql")),
+    JEDIS(
+            "redis.clients",
+            "jedis",
+            "5.1.0",
+            Relocation.of("jedis", "redis{}clients{}jedis"),
+            Relocation.of("commonspool2", "org{}apache{}commons{}pool2")),
+    SLF4J_SIMPLE("org.slf4j", "slf4j-simple", "1.7.30"),
+    SLF4J_API("org.slf4j", "slf4j-api", "1.7.30"),
+    COMMONS_POOL_2(
+            "org.apache.commons",
+            "commons-pool2",
+            "2.9.0",
+            Relocation.of("commonspool2", "org{}apache{}commons{}pool2"));
 
     private final String fullPath;
     private final String version;
+
     @Getter
     private final List<Relocation> relocations;
 
@@ -75,13 +58,13 @@ public enum Dependency {
     }
 
     Dependency(String groupId, String artifactId, String version, Relocation... relocations) {
-        this.fullPath = String.format(MAVEN_FORMAT,
+        this.fullPath = String.format(
+                MAVEN_FORMAT,
                 rewriteEscape(groupId).replace('.', '/'),
                 rewriteEscape(artifactId),
                 version,
                 rewriteEscape(artifactId),
-                version
-        );
+                version);
 
         this.version = version;
         this.relocations = ImmutableList.copyOf(relocations);

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/DependencyManager.java

@@ -1,5 +1,6 @@
 package dev.xhyrom.lighteco.common.dependencies;
 
+import dev.xhyrom.lighteco.common.messaging.MessagingType;
 import dev.xhyrom.lighteco.common.storage.StorageType;
 
 import java.util.Set;
@@ -9,6 +10,8 @@ public interface DependencyManager extends AutoCloseable {
 
     void loadStorageDependencies(Set<StorageType> types);
 
+    void loadMessagingDependencies(Set<MessagingType> types);
+
     ClassLoader obtainClassLoaderWith(Set<Dependency> dependencies);
 
     @Override

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/DependencyManagerImpl.java

@@ -2,13 +2,16 @@ package dev.xhyrom.lighteco.common.dependencies;
 
 import com.google.common.collect.ImmutableSet;
 import com.google.common.io.MoreFiles;
+
 import dev.xhyrom.lighteco.common.config.Config;
 import dev.xhyrom.lighteco.common.dependencies.relocation.Relocation;
 import dev.xhyrom.lighteco.common.dependencies.relocation.RelocationHandler;
+import dev.xhyrom.lighteco.common.messaging.MessagingType;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
 import dev.xhyrom.lighteco.common.plugin.logger.PluginLogger;
-import dev.xhyrom.lighteco.common.util.URLClassLoaderAccess;
 import dev.xhyrom.lighteco.common.storage.StorageType;
+import dev.xhyrom.lighteco.common.util.URLClassLoaderAccess;
+
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 
 import java.io.IOException;
@@ -17,8 +20,6 @@ import java.net.URLClassLoader;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.*;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CountDownLatch;
 
 public class DependencyManagerImpl implements DependencyManager {
     private final EnumMap<Dependency, Path> loaded = new EnumMap<>(Dependency.class);
@@ -36,7 +37,8 @@ public class DependencyManagerImpl implements DependencyManager {
         this.logger = plugin.getBootstrap().getLogger();
         this.registry = new DependencyRegistry();
         this.cacheDirectory = setupCacheDirectory(plugin);
-        this.classLoader = URLClassLoaderAccess.create((URLClassLoader) plugin.getBootstrap().getClass().getClassLoader());
+        this.classLoader = URLClassLoaderAccess.create(
+                (URLClassLoader) plugin.getBootstrap().getClass().getClassLoader());
     }
 
     private synchronized RelocationHandler getRelocationHandler() {
@@ -49,42 +51,25 @@ public class DependencyManagerImpl implements DependencyManager {
 
     @Override
     public void loadDependencies(Set<Dependency> dependencies) {
-        CountDownLatch latch = new CountDownLatch(dependencies.size());
-
-        if (this.config.debug)
-            this.logger.info("Loading dependencies: " + dependencies);
+        if (this.config.debug) this.logger.info("Loading dependencies: " + dependencies);
 
         for (Dependency dependency : dependencies) {
             if (this.loaded.containsKey(dependency)) {
-                latch.countDown();
                 continue;
             }
 
-            CompletableFuture.runAsync(() -> {
-                if (this.config.debug)
-                    this.logger.info("Loading dependency " + dependency);
+            if (this.config.debug) this.logger.info("Loading dependency " + dependency);
 
             try {
                 loadDependency(dependency);
             } catch (Exception e) {
                 throw new RuntimeException("Failed to load dependency " + dependency, e);
             } finally {
-                    latch.countDown();
-
-                    if (this.config.debug)
-                        this.logger.info("Loaded dependency " + dependency);
+                if (this.config.debug) this.logger.info("Loaded dependency " + dependency);
             }
-            });
         }
 
-        try {
-            latch.await();
-
-            if (this.config.debug)
-                this.logger.info("Loaded dependencies: " + dependencies);
-        } catch (InterruptedException e) {
-            throw new RuntimeException(e);
-        }
+        if (this.config.debug) this.logger.info("Loaded dependencies: " + dependencies);
     }
 
     private void loadDependency(Dependency dependency) throws Exception {
@@ -142,6 +127,11 @@ public class DependencyManagerImpl implements DependencyManager {
         loadDependencies(this.registry.resolveStorageDependencies(types));
     }
 
+    @Override
+    public void loadMessagingDependencies(Set<MessagingType> types) {
+        loadDependencies(this.registry.resolveMessagingDependencies(types));
+    }
+
     @Override
     public ClassLoader obtainClassLoaderWith(Set<Dependency> dependencies) {
         ImmutableSet<Dependency> set = ImmutableSet.copyOf(dependencies);

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/DependencyRegistry.java

@@ -2,13 +2,16 @@ package dev.xhyrom.lighteco.common.dependencies;
 
 import com.google.common.collect.ImmutableSetMultimap;
 import com.google.common.collect.SetMultimap;
+
+import dev.xhyrom.lighteco.common.messaging.MessagingType;
 import dev.xhyrom.lighteco.common.storage.StorageType;
 
 import java.util.LinkedHashSet;
 import java.util.Set;
 
 public class DependencyRegistry {
-    private static final SetMultimap<StorageType, Dependency> STORAGE_DEPENDENCIES = ImmutableSetMultimap.<StorageType, Dependency>builder()
+    private static final SetMultimap<StorageType, Dependency> STORAGE_DEPENDENCIES =
+            ImmutableSetMultimap.<StorageType, Dependency>builder()
                     .putAll(StorageType.SQLITE, Dependency.SQLITE_DRIVER)
                     .putAll(StorageType.H2, Dependency.H2_DRIVER)
                     .putAll(StorageType.MYSQL, Dependency.MYSQL_DRIVER, Dependency.HIKARI)
@@ -16,6 +19,16 @@ public class DependencyRegistry {
                     .putAll(StorageType.POSTGRESQL, Dependency.POSTGRESQL_DRIVER, Dependency.HIKARI)
                     .build();
 
+    private static final SetMultimap<MessagingType, Dependency> MESSAGING_DEPENDENCIES =
+            ImmutableSetMultimap.<MessagingType, Dependency>builder()
+                    .putAll(
+                            MessagingType.REDIS,
+                            Dependency.COMMONS_POOL_2,
+                            Dependency.JEDIS,
+                            Dependency.SLF4J_API,
+                            Dependency.SLF4J_SIMPLE)
+                    .build();
+
     public Set<Dependency> resolveStorageDependencies(Set<StorageType> types) {
         Set<Dependency> dependencies = new LinkedHashSet<>();
 
@@ -26,6 +39,16 @@ public class DependencyRegistry {
         return dependencies;
     }
 
+    public Set<Dependency> resolveMessagingDependencies(Set<MessagingType> types) {
+        Set<Dependency> dependencies = new LinkedHashSet<>();
+
+        for (MessagingType type : types) {
+            dependencies.addAll(MESSAGING_DEPENDENCIES.get(type));
+        }
+
+        return dependencies;
+    }
+
     public boolean shouldAutoLoad(Dependency dependency) {
         return switch (dependency) {
             case H2_DRIVER, SQLITE_DRIVER -> false;

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/IsolatedClassLoader.java

@@ -11,5 +11,4 @@ public class IsolatedClassLoader extends URLClassLoader {
     public IsolatedClassLoader(URL[] urls) {
         super(urls, ClassLoader.getSystemClassLoader().getParent());
     }
-
 }

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/relocation/Relocation.java

@@ -17,5 +17,4 @@ public class Relocation {
         this.pattern = pattern;
         this.relocatedPattern = relocatedPattern;
     }
-
 }

common/src/main/java/dev/xhyrom/lighteco/common/dependencies/relocation/RelocationHandler.java

@@ -12,7 +12,8 @@ import java.nio.file.Path;
 import java.util.*;
 
 public class RelocationHandler {
-    public static final Set<Dependency> DEPENDENCIES = EnumSet.of(Dependency.ASM, Dependency.ASM_COMMONS, Dependency.JAR_RELOCATOR);
+    public static final Set<Dependency> DEPENDENCIES =
+            EnumSet.of(Dependency.ASM, Dependency.ASM_COMMONS, Dependency.JAR_RELOCATOR);
     private static final String JAR_RELOCATOR_CLASS = "me.lucko.jarrelocator.JarRelocator";
     private static final String JAR_RELOCATOR_RUN_METHOD = "run";
 
@@ -31,10 +32,12 @@ public class RelocationHandler {
             Class<?> jarRelocatorClass = classLoader.loadClass(JAR_RELOCATOR_CLASS);
 
             // prepare the reflected constructor & method instances
-            this.jarRelocatorConstructor = jarRelocatorClass.getDeclaredConstructor(File.class, File.class, Map.class);
+            this.jarRelocatorConstructor =
+                    jarRelocatorClass.getDeclaredConstructor(File.class, File.class, Map.class);
             this.jarRelocatorConstructor.setAccessible(true);
 
-            this.jarRelocatorRunMethod = jarRelocatorClass.getDeclaredMethod(JAR_RELOCATOR_RUN_METHOD);
+            this.jarRelocatorRunMethod =
+                    jarRelocatorClass.getDeclaredMethod(JAR_RELOCATOR_RUN_METHOD);
             this.jarRelocatorRunMethod.setAccessible(true);
         } catch (Exception e) {
             try {
@@ -56,8 +59,8 @@ public class RelocationHandler {
         }
 
         // create and invoke a new relocator
-        Object relocator = this.jarRelocatorConstructor.newInstance(input.toFile(), output.toFile(), mappings);
+        Object relocator =
+                this.jarRelocatorConstructor.newInstance(input.toFile(), output.toFile(), mappings);
         this.jarRelocatorRunMethod.invoke(relocator);
     }
-
 }

common/src/main/java/dev/xhyrom/lighteco/common/manager/Manager.java

@@ -6,6 +6,7 @@ public interface Manager<I, T> {
     T apply(I identifier);
 
     Collection<I> keys();
+
     Collection<T> values();
 
     T getOrMake(I identifier);

common/src/main/java/dev/xhyrom/lighteco/common/manager/command/AbstractCommandManager.java

@@ -1,260 +0,0 @@
-package dev.xhyrom.lighteco.common.manager.command;
-
-import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
-import dev.xhyrom.lighteco.common.config.message.CurrencyMessageConfig;
-import dev.xhyrom.lighteco.common.model.chat.CommandSender;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import dev.xhyrom.lighteco.common.model.user.User;
-import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
-import net.kyori.adventure.text.minimessage.MiniMessage;
-import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
-
-import java.math.BigDecimal;
-import java.math.RoundingMode;
-import java.util.ArrayList;
-import java.util.Map;
-import java.util.UUID;
-
-public abstract class AbstractCommandManager implements CommandManager {
-    public final LightEcoPlugin plugin;
-    private final MiniMessage miniMessage = MiniMessage.miniMessage();
-    private final Map<String, CurrencyMessageConfig> config;
-    private final ArrayList<UUID> mustWait = new ArrayList<>();
-
-    protected AbstractCommandManager(LightEcoPlugin plugin) {
-        this.plugin = plugin;
-        this.config = this.plugin.getConfig().messages.currency;
-    }
-
-    @Override
-    public boolean canUse(CommandSender sender, Currency currency) {
-        // Console doesn't need to wait
-        if (sender.getUniqueId() == null) return true;
-
-        if (mustWait.contains(sender.getUniqueId())) {
-            sender.sendMessage(
-                    miniMessage.deserialize(
-                            this.getConfig(currency).wait
-                    )
-            );
-
-            return false;
-        }
-
-        return true;
-    }
-
-    private void addToMustWait(UUID ...uuids) {
-        for (UUID uuid : uuids) {
-            if (uuid != null)
-                mustWait.add(uuid);
-        }
-    }
-
-    private void removeFromMustWait(UUID ...uuids) {
-        for (UUID uuid : uuids) {
-            if (uuid != null)
-                mustWait.remove(uuid);
-        }
-    }
-
-    private CurrencyMessageConfig getConfig(Currency currency) {
-        CurrencyMessageConfig currencyMessageConfig = this.config.get(currency.getIdentifier());
-
-        if (currencyMessageConfig == null) {
-           return this.config.get("default");
-        }
-
-        return currencyMessageConfig;
-    }
-
-    @Override
-    public void onBalance(CommandSender sender, Currency currency) {
-        User user = this.plugin.getUserManager().getIfLoaded(sender.getUniqueId());
-        BigDecimal balance = user.getBalance(currency);
-
-        sender.sendMessage(
-               miniMessage.deserialize(
-                       getConfig(currency).balance,
-                       Placeholder.parsed("currency", currency.getIdentifier()),
-                       Placeholder.parsed("balance", balance.toPlainString())
-               )
-        );
-    }
-
-    @Override
-    public void onBalance(CommandSender sender, Currency currency, User target) {
-        BigDecimal balance = target.getBalance(currency);
-
-        sender.sendMessage(
-                miniMessage.deserialize(
-                        getConfig(currency).balanceOthers,
-                        Placeholder.parsed("currency", currency.getIdentifier()),
-                        Placeholder.parsed("target", target.getUsername()),
-                        Placeholder.parsed("balance", balance.toPlainString())
-                )
-
-        );
-    }
-
-    @Override
-    public void onSet(CommandSender sender, Currency currency, User target, BigDecimal amount) {
-        addToMustWait(sender.getUniqueId(), target.getUniqueId());
-        amount = amount.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
-
-        try {
-            target.setBalance(currency, amount);
-        } catch (CannotBeGreaterThan e) {
-            removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-            sender.sendMessage(
-                    miniMessage.deserialize(
-                            this.getConfig(currency).cannotBeGreaterThan,
-                            Placeholder.parsed("max", this.plugin.getConfig().maximumBalance.toPlainString())
-                    )
-            );
-
-            return;
-        }
-
-        sender.sendMessage(
-                miniMessage.deserialize(
-                        this.getConfig(currency).set,
-                        Placeholder.parsed("currency", currency.getIdentifier()),
-                        Placeholder.parsed("target", target.getUsername()),
-                        Placeholder.parsed("amount", amount.toPlainString())
-                )
-        );
-
-        removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-    }
-
-    @Override
-    public void onGive(CommandSender sender, Currency currency, User target, BigDecimal amount) {
-        addToMustWait(sender.getUniqueId(), target.getUniqueId());
-        amount = amount.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
-
-        try {
-            target.deposit(currency, amount);
-        } catch (CannotBeGreaterThan e) {
-            removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-            sender.sendMessage(
-                    miniMessage.deserialize(
-                            this.getConfig(currency).cannotBeGreaterThan,
-                            Placeholder.parsed("max", this.plugin.getConfig().maximumBalance.toPlainString())
-                    )
-            );
-
-            return;
-        }
-
-        sender.sendMessage(
-                miniMessage.deserialize(
-                        this.getConfig(currency).give,
-                        Placeholder.parsed("currency", currency.getIdentifier()),
-                        Placeholder.parsed("target", target.getUsername()),
-                        Placeholder.parsed("amount", amount.toPlainString()),
-                        Placeholder.parsed("balance", target.getBalance(currency).toPlainString())
-                )
-        );
-
-        removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-    }
-
-    @Override
-    public void onTake(CommandSender sender, Currency currency, User target, BigDecimal amount) {
-        addToMustWait(sender.getUniqueId(), target.getUniqueId());
-        amount = amount.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
-
-        try {
-            target.withdraw(currency, amount);
-        } catch (CannotBeGreaterThan e) {
-            removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-            sender.sendMessage(
-                    miniMessage.deserialize(
-                            this.getConfig(currency).cannotBeGreaterThan,
-                            Placeholder.parsed("max", this.plugin.getConfig().maximumBalance.toPlainString())
-                    )
-            );
-
-            return;
-        }
-
-        sender.sendMessage(
-                miniMessage.deserialize(
-                        this.getConfig(currency).take,
-                        Placeholder.parsed("currency", currency.getIdentifier()),
-                        Placeholder.parsed("target", target.getUsername()),
-                        Placeholder.parsed("amount", amount.toPlainString()),
-                        Placeholder.parsed("balance", target.getBalance(currency).toPlainString())
-                )
-        );
-
-        removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-    }
-
-    @Override
-    public void onPay(CommandSender sender, Currency currency, User target, BigDecimal amount) {
-        if (sender.getUniqueId() != null && (sender.getUniqueId() == target.getUniqueId())) {
-            sender.sendMessage(
-                    miniMessage.deserialize(this.getConfig(currency).cannotPaySelf)
-            );
-
-            return;
-        }
-
-        amount = amount.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
-
-        User user = this.plugin.getUserManager().getIfLoaded(sender.getUniqueId());
-
-        if (user.getBalance(currency).compareTo(amount) < 0) {
-            sender.sendMessage(
-                    miniMessage.deserialize(this.getConfig(currency).notEnoughMoney)
-            );
-
-            return;
-        }
-
-        addToMustWait(sender.getUniqueId(), target.getUniqueId());
-
-        // calculate tax using Currency#calculateTax
-        BigDecimal tax = currency.getProxy().calculateTax(user.getProxy(), amount);
-        tax = tax.setScale(currency.getProxy().fractionalDigits(), RoundingMode.DOWN);
-
-        // subtract tax from amount
-        BigDecimal taxedAmount = amount.subtract(tax);
-
-        try {
-            target.deposit(currency, taxedAmount);
-            user.withdraw(currency, amount);
-        } catch (CannotBeGreaterThan e) {
-            removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-            sender.sendMessage(
-                    miniMessage.deserialize(
-                            this.getConfig(currency).cannotBeGreaterThan,
-                            Placeholder.parsed("max", this.plugin.getConfig().maximumBalance.toPlainString())
-                    )
-            );
-
-            return;
-        }
-
-        String template = tax.compareTo(BigDecimal.ZERO) > 0
-                ? this.getConfig(currency).payWithTax
-                : this.getConfig(currency).pay;
-
-
-        sender.sendMessage(
-                miniMessage.deserialize(
-                        template,
-                        Placeholder.parsed("currency", currency.getIdentifier()),
-                        Placeholder.parsed("target", target.getUsername()),
-                        Placeholder.parsed("amount", amount.toPlainString()),
-                        Placeholder.parsed("taxed_amount", taxedAmount.toPlainString()),
-                        Placeholder.parsed("sender_balance", user.getBalance(currency).toPlainString()),
-                        Placeholder.parsed("receiver_balance", target.getBalance(currency).toPlainString())
-                )
-        );
-
-        removeFromMustWait(target.getUniqueId(), sender.getUniqueId());
-    }
-}

common/src/main/java/dev/xhyrom/lighteco/common/manager/command/CommandManager.java

@@ -1,23 +0,0 @@
-package dev.xhyrom.lighteco.common.manager.command;
-
-import dev.xhyrom.lighteco.common.model.chat.CommandSender;
-import dev.xhyrom.lighteco.common.model.currency.Currency;
-import dev.xhyrom.lighteco.common.model.user.User;
-import org.checkerframework.checker.nullness.qual.NonNull;
-
-import java.math.BigDecimal;
-
-public interface CommandManager {
-    void registerCurrencyCommand(@NonNull Currency currency);
-    void registerCurrencyCommand(@NonNull Currency currency, boolean main);
-
-    boolean canUse(CommandSender sender, Currency currency);
-
-    void onBalance(CommandSender sender, Currency currency);
-    void onBalance(CommandSender sender, Currency currency, User target);
-
-    void onSet(CommandSender sender, Currency currency, User target, BigDecimal amount);
-    void onGive(CommandSender sender, Currency currency, User target, BigDecimal amount);
-    void onTake(CommandSender sender, Currency currency, User target, BigDecimal amount);
-    void onPay(CommandSender sender, Currency currency, User target, BigDecimal amount);
-}

common/src/main/java/dev/xhyrom/lighteco/common/manager/currency/CurrencyManager.java

@@ -2,6 +2,7 @@ package dev.xhyrom.lighteco.common.manager.currency;
 
 import dev.xhyrom.lighteco.common.manager.Manager;
 import dev.xhyrom.lighteco.common.model.currency.Currency;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.Collection;

common/src/main/java/dev/xhyrom/lighteco/common/manager/currency/StandardCurrencyManager.java

@@ -3,11 +3,13 @@ package dev.xhyrom.lighteco.common.manager.currency;
 import dev.xhyrom.lighteco.common.manager.SingleManager;
 import dev.xhyrom.lighteco.common.model.currency.Currency;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.Collection;
 
-public class StandardCurrencyManager extends SingleManager<String, Currency> implements CurrencyManager {
+public class StandardCurrencyManager extends SingleManager<String, Currency>
+        implements CurrencyManager {
     private final LightEcoPlugin plugin;
 
     public StandardCurrencyManager(LightEcoPlugin plugin) {
@@ -32,10 +34,14 @@ public class StandardCurrencyManager extends SingleManager<String, Currency> imp
     @Override
     public void registerCurrency(@NonNull Currency currency) {
         if (this.isLoaded(currency.getIdentifier()))
-            throw new IllegalArgumentException("Currency with identifier " + currency.getIdentifier() + " already registered");
+            throw new IllegalArgumentException(
+                    "Currency with identifier " + currency.getIdentifier() + " already registered");
 
         if (this.plugin.getConfig().debug)
-            this.plugin.getBootstrap().getLogger().info("Registering currency " + currency.getIdentifier());
+            this.plugin
+                    .getBootstrap()
+                    .getLogger()
+                    .info("Registering currency " + currency.getIdentifier());
 
         this.plugin.getStorage().registerCurrencySync(currency.getProxy());
         this.map.put(currency.getIdentifier(), currency);

common/src/main/java/dev/xhyrom/lighteco/common/manager/user/StandardUserManager.java

@@ -3,6 +3,7 @@ package dev.xhyrom.lighteco.common.manager.user;
 import dev.xhyrom.lighteco.common.manager.ConcurrentManager;
 import dev.xhyrom.lighteco.common.model.user.User;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import lombok.Getter;
 
 import java.util.Arrays;
@@ -11,21 +12,26 @@ import java.util.concurrent.CompletableFuture;
 
 public class StandardUserManager extends ConcurrentManager<UUID, User> implements UserManager {
     private final LightEcoPlugin plugin;
+
     @Getter
     private final UserHousekeeper housekeeper;
 
     public StandardUserManager(LightEcoPlugin plugin) {
         this.plugin = plugin;
-        this.housekeeper = new UserHousekeeper(plugin, this, UserHousekeeper.timeoutSettings(
+        this.housekeeper = new UserHousekeeper(
+                plugin,
+                this,
+                UserHousekeeper.timeoutSettings(
                         this.plugin.getConfig().housekeeper.expireAfterWrite,
-                this.plugin.getConfig().housekeeper.expireAfterWriteUnit
-        ));
+                        this.plugin.getConfig().housekeeper.expireAfterWriteUnit));
 
-        this.plugin.getBootstrap().getScheduler().asyncRepeating(
+        this.plugin
+                .getBootstrap()
+                .getScheduler()
+                .asyncRepeating(
                         this.housekeeper,
                         this.plugin.getConfig().housekeeper.runInterval,
-                this.plugin.getConfig().housekeeper.runIntervalUnit
-        );
+                        this.plugin.getConfig().housekeeper.runIntervalUnit);
     }
 
     @Override
@@ -54,10 +60,10 @@ public class StandardUserManager extends ConcurrentManager<UUID, User> implement
 
     @Override
     public CompletableFuture<Void> saveUsers(User... users) {
-        return this.plugin.getStorage().saveUsers(
-                Arrays.stream(users)
+        return this.plugin
+                .getStorage()
+                .saveUsers(Arrays.stream(users)
                         .map(User::getProxy)
-                        .toArray(dev.xhyrom.lighteco.api.model.user.User[]::new)
-        );
+                        .toArray(dev.xhyrom.lighteco.api.model.user.User[]::new));
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/manager/user/UserHousekeeper.java

@@ -13,7 +13,8 @@ public class UserHousekeeper implements Runnable {
 
     private final ExpiringSet<UUID> recentlyUsed;
 
-    public UserHousekeeper(LightEcoPlugin plugin, UserManager userManager, TimeoutSettings timeoutSettings) {
+    public UserHousekeeper(
+            LightEcoPlugin plugin, UserManager userManager, TimeoutSettings timeoutSettings) {
         this.plugin = plugin;
         this.userManager = userManager;
         this.recentlyUsed = new ExpiringSet<>(timeoutSettings.duration, timeoutSettings.unit);
@@ -41,8 +42,7 @@ public class UserHousekeeper implements Runnable {
         }
 
         // If the user is dirty (has unsaved changes), don't unload
-        if (user.isDirty())
-            return;
+        if (user.isDirty()) return;
 
         if (this.plugin.getConfig().debug) {
             this.plugin.getBootstrap().getLogger().info("Unloading data for " + uuid);

common/src/main/java/dev/xhyrom/lighteco/common/manager/user/UserManager.java

@@ -10,8 +10,10 @@ public interface UserManager extends Manager<UUID, User> {
     UserHousekeeper getHousekeeper();
 
     CompletableFuture<Void> saveUser(User user);
+
     CompletableFuture<Void> saveUsers(User... users);
 
     CompletableFuture<User> loadUser(UUID uniqueId);
+
     CompletableFuture<User> loadUser(UUID uniqueId, String username);
 }

common/src/main/java/dev/xhyrom/lighteco/common/messaging/InternalMessagingService.java

@@ -0,0 +1,13 @@
+package dev.xhyrom.lighteco.common.messaging;
+
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+public interface InternalMessagingService {
+    LightEcoPlugin getPlugin();
+
+    void pushUserUpdate(User user, Currency currency);
+
+    void shutdown();
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/LightEcoMessagingService.java

@@ -0,0 +1,163 @@
+package dev.xhyrom.lighteco.common.messaging;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+
+import dev.xhyrom.lighteco.api.messenger.IncomingMessageConsumer;
+import dev.xhyrom.lighteco.api.messenger.Messenger;
+import dev.xhyrom.lighteco.api.messenger.MessengerProvider;
+import dev.xhyrom.lighteco.api.messenger.message.Message;
+import dev.xhyrom.lighteco.api.messenger.message.type.UserUpdateMessage;
+import dev.xhyrom.lighteco.common.cache.ExpiringSet;
+import dev.xhyrom.lighteco.common.messaging.message.MessageType;
+import dev.xhyrom.lighteco.common.messaging.message.UserUpdateMessageImpl;
+import dev.xhyrom.lighteco.common.model.currency.Currency;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+import dev.xhyrom.lighteco.common.util.gson.GsonProvider;
+
+import lombok.Getter;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+public class LightEcoMessagingService implements InternalMessagingService, IncomingMessageConsumer {
+    @Getter
+    private final LightEcoPlugin plugin;
+
+    private final ExpiringSet<UUID> receivedMessages;
+
+    private final Messenger messenger;
+    private final MessengerProvider provider;
+
+    public LightEcoMessagingService(LightEcoPlugin plugin, MessengerProvider provider) {
+        this.plugin = plugin;
+
+        this.provider = provider;
+        this.messenger = provider.obtain(this);
+        this.receivedMessages = new ExpiringSet<>(30, TimeUnit.MINUTES);
+    }
+
+    private UUID generateMessageId() {
+        UUID id = UUID.randomUUID();
+
+        this.receivedMessages.add(id);
+        return id;
+    }
+
+    @Override
+    public void pushUserUpdate(User user, Currency currency) {
+        this.plugin
+                .getBootstrap()
+                .getScheduler()
+                .async()
+                .execute(() -> this.messenger.sendOutgoingMessage(
+                        new UserUpdateMessageImpl(
+                                generateMessageId(),
+                                user.getUniqueId(),
+                                currency.getIdentifier(),
+                                user.getBalance(currency)),
+                        currency.getType()
+                                == dev.xhyrom.lighteco.api.model.currency.Currency.Type.GLOBAL));
+    }
+
+    public static @NonNull String serialize(MessageType type, UUID id, JsonElement content) {
+        JsonObject data = new JsonObject();
+
+        data.add("i", new JsonPrimitive(id.toString()));
+        data.add("t", new JsonPrimitive(type.name()));
+        data.add("c", content);
+
+        return GsonProvider.get().toJson(data);
+    }
+
+    @Override
+    public void consumeIncomingMessage(@NonNull Message message) {
+        if (!this.receivedMessages.add(message.getId())) {
+            return;
+        }
+
+        this.processIncomingMessage(message);
+    }
+
+    @Override
+    public void consumeRawIncomingMessage(@NonNull String message) {
+        try {
+            deserializeAndConsumeRawIncomingMessage(message);
+        } catch (Exception e) {
+            this.plugin
+                    .getBootstrap()
+                    .getLogger()
+                    .warn("Failed to deserialize incoming message: " + message, e);
+        }
+    }
+
+    private void deserializeAndConsumeRawIncomingMessage(@NonNull String message) {
+        JsonObject parsed = GsonProvider.get().fromJson(message, JsonObject.class);
+
+        JsonElement idElement = parsed.get("i");
+        if (idElement == null) {
+            throw new IllegalStateException("Missing message id: " + message);
+        }
+
+        UUID id = UUID.fromString(idElement.getAsString());
+
+        if (!this.receivedMessages.add(id)) {
+            return;
+        }
+
+        JsonElement typeElement = parsed.get("t");
+        if (typeElement == null) {
+            throw new IllegalStateException("Missing message type: " + message);
+        }
+
+        MessageType type = MessageType.valueOf(typeElement.getAsString());
+
+        @Nullable JsonElement contentElement = parsed.get("c");
+
+        Message deserialized;
+        switch (type) {
+            case USER_UPDATE:
+                deserialized = UserUpdateMessageImpl.deserialize(id, contentElement);
+                break;
+            default:
+                return;
+        }
+
+        this.processIncomingMessage(deserialized);
+    }
+
+    private void processIncomingMessage(Message message) {
+        if (message instanceof UserUpdateMessage userUpdateMessage) {
+            this.plugin.getBootstrap().getScheduler().async().execute(() -> {
+                User user = this.plugin
+                        .getUserManager()
+                        .getIfLoaded(userUpdateMessage.getUserUniqueId());
+                if (user == null) {
+                    return;
+                }
+
+                Currency currency = this.plugin
+                        .getCurrencyManager()
+                        .getIfLoaded(userUpdateMessage.getCurrencyIdentifier());
+                if (currency == null) {
+                    return;
+                }
+
+                user.setBalance(currency, userUpdateMessage.getNewBalance(), false, false);
+            });
+        } else {
+            throw new IllegalStateException(
+                    "Unknown message type: " + message.getClass().getName());
+        }
+    }
+
+    @Override
+    public void shutdown() {
+        this.messenger.close();
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/MessagingFactory.java

@@ -0,0 +1,38 @@
+package dev.xhyrom.lighteco.common.messaging;
+
+import dev.xhyrom.lighteco.api.messenger.MessengerProvider;
+import dev.xhyrom.lighteco.common.messaging.type.redis.RedisMessengerProvider;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import java.util.Set;
+
+public class MessagingFactory {
+    private final LightEcoPlugin plugin;
+
+    public MessagingFactory(LightEcoPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    protected LightEcoPlugin getPlugin() {
+        return this.plugin;
+    }
+
+    public Set<MessagingType> getRequiredTypes() {
+        return Set.of(this.plugin.getConfig().messaging.provider);
+    }
+
+    public InternalMessagingService get() {
+        MessagingType type = this.plugin.getConfig().messaging.provider;
+        MessengerProvider provider = this.createProvider(type);
+        if (provider == null) return null;
+
+        return new LightEcoMessagingService(this.plugin, provider);
+    }
+
+    private MessengerProvider createProvider(MessagingType type) {
+        return switch (type) {
+            case REDIS -> new RedisMessengerProvider(this.plugin);
+            default -> null;
+        };
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/MessagingType.java

@@ -0,0 +1,6 @@
+package dev.xhyrom.lighteco.common.messaging;
+
+public enum MessagingType {
+    NONE,
+    REDIS
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/message/AbstractMessage.java

@@ -0,0 +1,21 @@
+package dev.xhyrom.lighteco.common.messaging.message;
+
+import dev.xhyrom.lighteco.api.messenger.message.Message;
+import dev.xhyrom.lighteco.api.messenger.message.OutgoingMessage;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.UUID;
+
+public abstract class AbstractMessage implements Message, OutgoingMessage {
+    private final UUID id;
+
+    protected AbstractMessage(UUID id) {
+        this.id = id;
+    }
+
+    @Override
+    public @NonNull UUID getId() {
+        return this.id;
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/message/MessageType.java

@@ -0,0 +1,5 @@
+package dev.xhyrom.lighteco.common.messaging.message;
+
+public enum MessageType {
+    USER_UPDATE;
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/message/UserUpdateMessageImpl.java

@@ -0,0 +1,55 @@
+package dev.xhyrom.lighteco.common.messaging.message;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+
+import dev.xhyrom.lighteco.api.messenger.message.type.UserUpdateMessage;
+import dev.xhyrom.lighteco.common.messaging.LightEcoMessagingService;
+
+import lombok.Getter;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigDecimal;
+import java.util.UUID;
+
+public class UserUpdateMessageImpl extends AbstractMessage implements UserUpdateMessage {
+    private static final MessageType TYPE = MessageType.USER_UPDATE;
+
+    @Getter
+    private final UUID userUniqueId;
+
+    @Getter
+    private final String currencyIdentifier;
+
+    @Getter
+    private final BigDecimal newBalance;
+
+    public static UserUpdateMessage deserialize(UUID id, @NonNull JsonElement data) {
+        JsonObject obj = data.getAsJsonObject();
+        UUID userUniqueId = UUID.fromString(obj.get("u").getAsString());
+        String currencyIdentifier = obj.get("c").getAsString();
+        BigDecimal newBalance = obj.get("b").getAsBigDecimal();
+
+        return new UserUpdateMessageImpl(id, userUniqueId, currencyIdentifier, newBalance);
+    }
+
+    public UserUpdateMessageImpl(
+            UUID id, UUID userUniqueId, String currencyIdentifier, BigDecimal newBalance) {
+        super(id);
+        this.userUniqueId = userUniqueId;
+        this.currencyIdentifier = currencyIdentifier;
+        this.newBalance = newBalance;
+    }
+
+    @Override
+    public @NonNull String serialize() {
+        JsonObject data = new JsonObject();
+        data.add("u", new JsonPrimitive(this.userUniqueId.toString()));
+        data.add("c", new JsonPrimitive(this.currencyIdentifier));
+        data.add("b", new JsonPrimitive(this.newBalance));
+
+        return LightEcoMessagingService.serialize(TYPE, getId(), data);
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/type/redis/RedisMessenger.java

@@ -0,0 +1,97 @@
+package dev.xhyrom.lighteco.common.messaging.type.redis;
+
+import dev.xhyrom.lighteco.api.messenger.IncomingMessageConsumer;
+import dev.xhyrom.lighteco.api.messenger.Messenger;
+import dev.xhyrom.lighteco.api.messenger.message.OutgoingMessage;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import lombok.Getter;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+import redis.clients.jedis.*;
+
+public class RedisMessenger implements Messenger {
+    private static final String CHANNEL = "lighteco:{}:messages";
+
+    @Getter
+    private final String[] channels;
+
+    private final LightEcoPlugin plugin;
+    private final IncomingMessageConsumer consumer;
+
+    private UnifiedJedis jedis;
+    private Subscription sub;
+
+    public RedisMessenger(LightEcoPlugin plugin, IncomingMessageConsumer consumer) {
+        this.plugin = plugin;
+        this.consumer = consumer;
+
+        this.channels = new String[] {
+            CHANNEL.replace("{}:", ""), CHANNEL.replace("{}", this.plugin.getConfig().server)
+        };
+    }
+
+    public void init(
+            @Nullable String address, @Nullable String username, String password, boolean ssl) {
+        this.init(new JedisPooled(parseAddress(address), jedisConfig(username, password, ssl)));
+    }
+
+    private void init(UnifiedJedis jedis) {
+        this.jedis = jedis;
+        this.sub = new Subscription(this);
+
+        this.plugin.getBootstrap().getScheduler().async().execute(() -> {
+            this.jedis.subscribe(this.sub, this.getChannels());
+        });
+    }
+
+    private static JedisClientConfig jedisConfig(
+            @Nullable String username, @Nullable String password, boolean ssl) {
+        return DefaultJedisClientConfig.builder()
+                .user(username)
+                .password(password)
+                .ssl(ssl)
+                .timeoutMillis(Protocol.DEFAULT_TIMEOUT)
+                .build();
+    }
+
+    private static HostAndPort parseAddress(String address) {
+        String[] addressSplit = address.split(":");
+        String host = addressSplit[0];
+        int port =
+                addressSplit.length > 1 ? Integer.parseInt(addressSplit[1]) : Protocol.DEFAULT_PORT;
+
+        return new HostAndPort(host, port);
+    }
+
+    @Override
+    public void sendOutgoingMessage(@NonNull OutgoingMessage message, boolean global) {
+        this.jedis.publish(global ? getChannels()[0] : getChannels()[1], message.serialize());
+    }
+
+    @Override
+    public void close() {
+        this.sub.unsubscribe();
+        this.jedis.close();
+    }
+
+    private static class Subscription extends JedisPubSub {
+        private final RedisMessenger messenger;
+
+        public Subscription(RedisMessenger messenger) {
+            this.messenger = messenger;
+        }
+
+        @Override
+        public void onMessage(String channel, String message) {
+            String[] channels = this.messenger.getChannels();
+            if (!channel.equals(channels[0]) && !channel.equals(channels[1])) {
+                return;
+            }
+
+            this.messenger.consumer.consumeRawIncomingMessage(message);
+        }
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/messaging/type/redis/RedisMessengerProvider.java

@@ -0,0 +1,34 @@
+package dev.xhyrom.lighteco.common.messaging.type.redis;
+
+import dev.xhyrom.lighteco.api.messenger.IncomingMessageConsumer;
+import dev.xhyrom.lighteco.api.messenger.Messenger;
+import dev.xhyrom.lighteco.api.messenger.MessengerProvider;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public class RedisMessengerProvider implements MessengerProvider {
+    private final LightEcoPlugin plugin;
+
+    public RedisMessengerProvider(LightEcoPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public @NonNull Messenger obtain(@NonNull IncomingMessageConsumer consumer) {
+        RedisMessenger messenger = new RedisMessenger(this.plugin, consumer);
+
+        String address = this.plugin.getConfig().messaging.data.address;
+        String username = this.plugin.getConfig().messaging.data.username;
+        String password = this.plugin.getConfig().messaging.data.password;
+
+        if (password.isEmpty()) password = null;
+        if (username.isEmpty()) username = null;
+
+        boolean ssl = this.plugin.getConfig().messaging.data.ssl;
+
+        messenger.init(address, username, password, ssl);
+
+        return messenger;
+    }
+}

common/src/main/java/dev/xhyrom/lighteco/common/model/chat/CommandSender.java

@@ -2,11 +2,20 @@ package dev.xhyrom.lighteco.common.model.chat;
 
 import net.kyori.adventure.text.Component;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 import java.util.UUID;
 
 public interface CommandSender {
     String getUsername();
-    UUID getUniqueId();
+
+    @Nullable UUID getUniqueId();
+
+    boolean eligible(String permission);
 
     void sendMessage(Component message);
+
+    default boolean isConsole() {
+        return getUniqueId() == null;
+    }
 }

common/src/main/java/dev/xhyrom/lighteco/common/model/user/User.java

@@ -4,15 +4,21 @@ import dev.xhyrom.lighteco.api.exception.CannotBeGreaterThan;
 import dev.xhyrom.lighteco.api.exception.CannotBeNegative;
 import dev.xhyrom.lighteco.common.api.impl.ApiUser;
 import dev.xhyrom.lighteco.common.cache.RedisBackedMap;
+import dev.xhyrom.lighteco.common.messaging.InternalMessagingService;
 import dev.xhyrom.lighteco.common.model.currency.Currency;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import lombok.Getter;
 import lombok.Setter;
+
+import net.kyori.adventure.text.Component;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.util.HashMap;
+import java.util.Optional;
 import java.util.UUID;
 
 @Getter
@@ -28,6 +34,7 @@ public class User {
     @Getter
     @Setter
     private boolean dirty = false;
+
     @Getter
     @Setter
     private String username;
@@ -48,45 +55,63 @@ public class User {
         return balances.getOrDefault(currency, currency.getDefaultBalance());
     }
 
-    public void setBalance(@NonNull Currency currency, @NonNull BigDecimal balance) throws CannotBeNegative, CannotBeGreaterThan {
-        this.setBalance(currency, balance, false);
+    public void setBalance(@NonNull Currency currency, @NonNull BigDecimal balance)
+            throws CannotBeNegative, CannotBeGreaterThan {
+        this.setBalance(currency, balance, false, true);
     }
 
-    public void setBalance(@NonNull Currency currency, @NonNull BigDecimal balance, boolean force) throws CannotBeNegative, CannotBeGreaterThan {
+    public void setBalance(@NonNull Currency currency, @NonNull BigDecimal balance, boolean force)
+            throws CannotBeNegative, CannotBeGreaterThan {
+        this.setBalance(currency, balance, force, true);
+    }
+
+    public void setBalance(
+            @NonNull Currency currency, @NonNull BigDecimal balance, boolean force, boolean publish)
+            throws CannotBeNegative, CannotBeGreaterThan {
         if (balance.compareTo(BigDecimal.ZERO) < 0) {
             throw new CannotBeNegative("Balance cannot be negative");
         }
 
         if (balance.compareTo(this.plugin.getConfig().maximumBalance) > 0) {
-            throw new CannotBeGreaterThan("Balance cannot be greater than " + this.plugin.getConfig().maximumBalance);
+            throw new CannotBeGreaterThan(
+                    "Balance cannot be greater than " + this.plugin.getConfig().maximumBalance);
         }
 
         balance = balance.setScale(currency.fractionalDigits(), RoundingMode.DOWN);
         balances.put(currency, balance);
 
-        if (!force)
-            this.setDirty(true);
+        if (!force) this.setDirty(true);
+
+        if (publish) {
+            @NonNull Optional<InternalMessagingService> messagingService = this.plugin.getMessagingService();
+            messagingService.ifPresent(internalMessagingService ->
+                    internalMessagingService.pushUserUpdate(this, currency));
+        }
     }
 
-    public void deposit(@NonNull Currency currency, @NonNull BigDecimal amount) throws CannotBeNegative, CannotBeGreaterThan {
+    public void deposit(@NonNull Currency currency, @NonNull BigDecimal amount)
+            throws CannotBeNegative, CannotBeGreaterThan {
         if (amount.compareTo(BigDecimal.ZERO) < 0) {
             throw new IllegalArgumentException("Amount cannot be negative");
         }
 
         if (amount.compareTo(this.plugin.getConfig().maximumBalance) > 0) {
-            throw new CannotBeGreaterThan("Amount cannot be greater than " + this.plugin.getConfig().maximumBalance);
+            throw new CannotBeGreaterThan(
+                    "Amount cannot be greater than " + this.plugin.getConfig().maximumBalance);
         }
 
         this.setBalance(currency, this.getBalance(currency).add(amount));
     }
 
-    public void withdraw(@NonNull Currency currency, @NonNull BigDecimal amount) throws CannotBeNegative, CannotBeGreaterThan {
+    public void withdraw(@NonNull Currency currency, @NonNull BigDecimal amount)
+            throws CannotBeNegative, CannotBeGreaterThan {
         if (amount.compareTo(BigDecimal.ZERO) < 0) {
             throw new IllegalArgumentException("Amount cannot be negative");
         }
 
         if (amount.compareTo(this.plugin.getConfig().maximumBalance) > 0) {
-            throw new CannotBeGreaterThan("Amount cannot be greater than " + this.plugin.getConfig().maximumBalance);
+            throw new CannotBeGreaterThan(
+                    "Amount cannot be greater than " + this.plugin.getConfig().maximumBalance);
         }
 
         if (this.getBalance(currency).compareTo(amount) < 0) {
@@ -96,4 +121,8 @@ public class User {
 
         this.setBalance(currency, this.getBalance(currency).subtract(amount));
     }
+
+    public void sendMessage(@NonNull Component message) {
+        this.plugin.getBootstrap().getPlayerAudience(this.getUniqueId()).sendMessage(message);
+    }
 }

common/src/main/java/dev/xhyrom/lighteco/common/plugin/AbstractLightEcoPlugin.java

@@ -6,23 +6,33 @@ import dev.xhyrom.lighteco.common.api.LightEcoApi;
 import dev.xhyrom.lighteco.common.config.Config;
 import dev.xhyrom.lighteco.common.dependencies.DependencyManager;
 import dev.xhyrom.lighteco.common.dependencies.DependencyManagerImpl;
+import dev.xhyrom.lighteco.common.messaging.InternalMessagingService;
+import dev.xhyrom.lighteco.common.messaging.MessagingFactory;
 import dev.xhyrom.lighteco.common.storage.Storage;
 import dev.xhyrom.lighteco.common.storage.StorageFactory;
 import dev.xhyrom.lighteco.common.task.UserSaveTask;
+
 import eu.okaeri.configs.ConfigManager;
 import eu.okaeri.configs.yaml.snakeyaml.YamlSnakeYamlConfigurer;
+
 import lombok.Getter;
 
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.util.Optional;
 import java.util.concurrent.TimeUnit;
 
 @Getter
 public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
     private DependencyManager dependencyManager;
+
     @Getter
     private Config config;
 
     @Getter
     private Storage storage;
+
+    private InternalMessagingService messagingService;
     private LightEcoApi api;
 
     private UserSaveTask userSaveTask;
@@ -41,10 +51,14 @@ public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
 
     public final void enable() {
         // setup storage
-        StorageFactory factory = new StorageFactory(this);
-        this.dependencyManager.loadStorageDependencies(factory.getRequiredTypes());
+        StorageFactory storageFactory = new StorageFactory(this);
+        this.dependencyManager.loadStorageDependencies(storageFactory.getRequiredTypes());
 
-        this.storage = factory.get();
+        MessagingFactory messagingFactory = this.getMessagingFactory();
+        this.dependencyManager.loadMessagingDependencies(messagingFactory.getRequiredTypes());
+
+        this.storage = storageFactory.get();
+        this.messagingService = messagingFactory.get();
 
         // register listeners
         this.registerListeners();
@@ -52,6 +66,9 @@ public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
         // setup managers
         this.setupManagers();
 
+        // register built-in commands
+        this.getCommandManager().register();
+
         // register platform hooks
         this.registerPlatformHooks();
 
@@ -61,7 +78,9 @@ public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
         this.registerApiOnPlatform(this.api);
 
         this.userSaveTask = new UserSaveTask(this);
-        this.getBootstrap().getScheduler().asyncRepeating(userSaveTask, this.config.saveInterval, TimeUnit.SECONDS);
+        this.getBootstrap()
+                .getScheduler()
+                .asyncRepeating(userSaveTask, this.config.saveInterval, TimeUnit.SECONDS);
     }
 
     public final void disable() {
@@ -74,6 +93,8 @@ public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
         // shutdown storage
         this.storage.shutdown();
 
+        if (this.messagingService != null) this.messagingService.shutdown();
+
         // close isolated class loaders
         this.dependencyManager.close();
     }
@@ -81,8 +102,17 @@ public abstract class AbstractLightEcoPlugin implements LightEcoPlugin {
     protected abstract void registerListeners();
 
     protected abstract void setupManagers();
+
+    protected abstract MessagingFactory getMessagingFactory();
+
     protected abstract void registerApiOnPlatform(LightEco api);
 
     protected abstract void registerPlatformHooks();
+
     protected abstract void removePlatformHooks();
+
+    @Override
+    public @NonNull Optional<InternalMessagingService> getMessagingService() {
+        return Optional.ofNullable(this.messagingService);
+    }
 }

common/src/main/java/dev/xhyrom/lighteco/common/plugin/LightEcoPlugin.java

@@ -2,27 +2,37 @@ package dev.xhyrom.lighteco.common.plugin;
 
 import dev.xhyrom.lighteco.api.manager.ContextManager;
 import dev.xhyrom.lighteco.api.platform.Platform;
+import dev.xhyrom.lighteco.common.command.CommandManager;
 import dev.xhyrom.lighteco.common.config.Config;
 import dev.xhyrom.lighteco.common.dependencies.DependencyManager;
-import dev.xhyrom.lighteco.common.manager.command.CommandManager;
 import dev.xhyrom.lighteco.common.manager.currency.CurrencyManager;
 import dev.xhyrom.lighteco.common.manager.user.UserManager;
+import dev.xhyrom.lighteco.common.messaging.InternalMessagingService;
 import dev.xhyrom.lighteco.common.plugin.bootstrap.LightEcoBootstrap;
 import dev.xhyrom.lighteco.common.storage.Storage;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 
+import java.util.Optional;
+
 public interface LightEcoPlugin {
     Platform.@NonNull Type getPlatformType();
 
     @NonNull LightEcoBootstrap getBootstrap();
 
     @NonNull Config getConfig();
+
     @NonNull UserManager getUserManager();
+
     @NonNull CurrencyManager getCurrencyManager();
+
     @NonNull CommandManager getCommandManager();
+
     @NonNull ContextManager<?> getContextManager();
 
     @NonNull DependencyManager getDependencyManager();
 
+    @NonNull Optional<InternalMessagingService> getMessagingService();
+
     @NonNull Storage getStorage();
 }

common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LightEcoBootstrap.java

@@ -3,17 +3,32 @@ package dev.xhyrom.lighteco.common.plugin.bootstrap;
 import dev.xhyrom.lighteco.common.plugin.logger.PluginLogger;
 import dev.xhyrom.lighteco.common.plugin.scheduler.SchedulerAdapter;
 
+import net.kyori.adventure.audience.Audience;
+
 import java.io.InputStream;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 public interface LightEcoBootstrap {
     Object getLoader();
+
     PluginLogger getLogger();
+
     SchedulerAdapter getScheduler();
+
     Path getDataDirectory();
+
+    String getVersion();
+
+    Optional<UUID> lookupUniqueId(String username);
+
     boolean isPlayerOnline(UUID uniqueId);
+
     List<UUID> getOnlinePlayers();
+
     InputStream getResourceStream(String filename);
+
+    Audience getPlayerAudience(UUID uniqueId);
 }

common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LoaderBootstrap.java

@@ -2,6 +2,8 @@ package dev.xhyrom.lighteco.common.plugin.bootstrap;
 
 public interface LoaderBootstrap {
     void onLoad();
+
     void onEnable();
+
     void onDisable();
 }

common/src/main/java/dev/xhyrom/lighteco/common/plugin/logger/PluginLogger.java

@@ -2,17 +2,26 @@ package dev.xhyrom.lighteco.common.plugin.logger;
 
 public interface PluginLogger {
     void info(String message);
+
     void info(String message, Object... args);
 
+    void debug(String message);
+
+    void debug(String message, Object... args);
+
     void warn(String message);
+
     void warn(String message, Object... args);
 
     void warn(String message, Throwable throwable);
+
     void warn(String message, Throwable throwable, Object... args);
 
     void error(String message);
+
     void error(String message, Object... args);
 
     void error(String message, Throwable throwable);
+
     void error(String message, Throwable throwable, Object... args);
 }

common/src/main/java/dev/xhyrom/lighteco/common/storage/Storage.java

@@ -75,7 +75,8 @@ public class Storage {
         }
 
         return future(() -> this.provider.loadUser(uniqueId, username))
-                .thenApply(apiUser -> this.plugin.getUserManager().getIfLoaded(apiUser.getUniqueId()));
+                .thenApply(
+                        apiUser -> this.plugin.getUserManager().getIfLoaded(apiUser.getUniqueId()));
     }
 
     public CompletableFuture<Void> saveUser(dev.xhyrom.lighteco.api.model.user.User user) {

common/src/main/java/dev/xhyrom/lighteco/common/storage/StorageFactory.java

@@ -1,6 +1,5 @@
 package dev.xhyrom.lighteco.common.storage;
 
-import com.google.common.collect.ImmutableSet;
 import dev.xhyrom.lighteco.api.storage.StorageProvider;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
 import dev.xhyrom.lighteco.common.storage.provider.memory.MemoryStorageProvider;
@@ -21,7 +20,7 @@ public class StorageFactory {
     }
 
     public Set<StorageType> getRequiredTypes() {
-        return ImmutableSet.of(this.plugin.getConfig().storage.provider);
+        return Set.of(this.plugin.getConfig().storage.provider);
     }
 
     public Storage get() {
@@ -38,25 +37,27 @@ public class StorageFactory {
             case MEMORY -> new MemoryStorageProvider(this.plugin);
             case H2 -> new SqlStorageProvider(
                     this.plugin,
-                    new H2ConnectionFactory(this.plugin.getBootstrap().getDataDirectory().resolve("lighteco-h2").toAbsolutePath())
-            );
+                    new H2ConnectionFactory(this.plugin
+                            .getBootstrap()
+                            .getDataDirectory()
+                            .resolve("lighteco-h2")
+                            .toAbsolutePath()));
             case SQLITE -> new SqlStorageProvider(
                     this.plugin,
-                    new SqliteConnectionFactory(this.plugin.getBootstrap().getDataDirectory().resolve("lighteco-sqlite.db"))
-            );
+                    new SqliteConnectionFactory(this.plugin
+                            .getBootstrap()
+                            .getDataDirectory()
+                            .resolve("lighteco-sqlite.db")));
             case MYSQL -> new SqlStorageProvider(
-                    this.plugin,
-                    new MySQLConnectionFactory(this.plugin.getConfig().storage.data)
-            );
+                    this.plugin, new MySQLConnectionFactory(this.plugin.getConfig().storage.data));
             case MARIADB -> new SqlStorageProvider(
                     this.plugin,
-                    new MariaDBConnectionFactory(this.plugin.getConfig().storage.data)
-            );
+                    new MariaDBConnectionFactory(this.plugin.getConfig().storage.data));
             case POSTGRESQL -> new SqlStorageProvider(
                     this.plugin,
-                    new PostgreSQLConnectionFactory(this.plugin.getConfig().storage.data)
-            );
-            default -> throw new IllegalArgumentException("Unknown storage provider: " + type.name());
+                    new PostgreSQLConnectionFactory(this.plugin.getConfig().storage.data));
+            default -> throw new IllegalArgumentException(
+                    "Unknown storage provider: " + type.name());
         };
     }
 }

common/src/main/java/dev/xhyrom/lighteco/common/storage/provider/memory/MemoryStorageProvider.java

@@ -3,6 +3,7 @@ package dev.xhyrom.lighteco.common.storage.provider.memory;
 import dev.xhyrom.lighteco.api.model.user.User;
 import dev.xhyrom.lighteco.api.storage.StorageProvider;
 import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -13,6 +14,7 @@ public class MemoryStorageProvider implements StorageProvider {
     private HashMap<UUID, User> userDatabase;
 
     private final LightEcoPlugin plugin;
+
     public MemoryStorageProvider(LightEcoPlugin plugin) {
         this.plugin = plugin;
     }
@@ -49,9 +51,9 @@ public class MemoryStorageProvider implements StorageProvider {
     }
 
     private User createUser(UUID uniqueId, String username, User data) {
-        dev.xhyrom.lighteco.common.model.user.User user = this.plugin.getUserManager().getOrMake(uniqueId);
-        if (username != null)
-            user.setUsername(username);
+        dev.xhyrom.lighteco.common.model.user.User user =
+                this.plugin.getUserManager().getOrMake(uniqueId);
+        if (username != null) user.setUsername(username);
 
         return user.getProxy();
     }

common/src/main/java/dev/xhyrom/lighteco/common/storage/provider/sql/SqlStatements.java

@@ -7,26 +7,22 @@ public enum SqlStatements {
             "INSERT INTO '{prefix}_local_{context}_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;",
             "INSERT INTO '{prefix}_local_{context}_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON DUPLICATE KEY UPDATE balance=?2;",
             "INSERT INTO '{prefix}_local_{context}_{currency}_users' (uuid, balance) VALUES (?, ?) ON DUPLICATE KEY UPDATE balance=?;",
-            "INSERT INTO '{prefix}_local_{context}_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;"
-    ),
+            "INSERT INTO '{prefix}_local_{context}_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;"),
     SAVE_USER_GLOBAL_CURRENCY(
             "INSERT INTO '{prefix}_global_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;",
             "INSERT INTO '{prefix}_global_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON DUPLICATE KEY UPDATE balance=?2;",
             "INSERT INTO '{prefix}_global_{currency}_users' (uuid, balance) VALUES (?, ?) ON DUPLICATE KEY UPDATE balance=?;",
-            "INSERT INTO '{prefix}_global_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;"
-    ),
+            "INSERT INTO '{prefix}_global_{currency}_users' (uuid, balance) VALUES (?1, ?2) ON CONFLICT (uuid) DO UPDATE SET balance=?2;"),
     LOAD_LOCAL_CURRENCY_USER(
             "SELECT {identifier} AS name, balance FROM '{prefix}_local_{context}_{currency}_users' WHERE uuid = ?1",
             "SELECT {identifier} AS name, balance FROM '{prefix}_local_{context}_{currency}_users' WHERE uuid = ?1",
             "SELECT {identifier} AS name, balance FROM '{prefix}_local_{context}_{currency}_users' WHERE uuid = ?",
-            "SELECT {identifier} AS name, balance FROM '{prefix}_local_{context}_{currency}_users' WHERE uuid = ?1"
-    ),
+            "SELECT {identifier} AS name, balance FROM '{prefix}_local_{context}_{currency}_users' WHERE uuid = ?1"),
     LOAD_GLOBAL_CURRENCY_USER(
             "SELECT {identifier} AS name, balance FROM '{prefix}_global_{currency}_users' WHERE uuid = ?1",
             "SELECT {identifier} AS name, balance FROM '{prefix}_global_{currency}_users' WHERE uuid = ?1",
             "SELECT {identifier} AS name, balance FROM '{prefix}_global_{currency}_users' WHERE uuid = ?",
-            "SELECT {identifier} AS name, balance FROM '{prefix}_global_{currency}_users' WHERE uuid = ?1"
-    );
+            "SELECT {identifier} AS name, balance FROM '{prefix}_global_{currency}_users' WHERE uuid = ?1");
 
     public final String sqlite;
     public final String mysql;
@@ -54,11 +50,13 @@ public enum SqlStatements {
             case POSTGRESQL -> {
                 return this.postgresql;
             }
-            default -> throw new IllegalArgumentException("Unknown implementation: " + implementationName);
+            default -> throw new IllegalArgumentException(
+                    "Unknown implementation: " + implementationName);
         }
     }
 
     public static boolean mustDuplicateParameters(StorageType implementationName) {
-        return implementationName == StorageType.MARIADB || implementationName == StorageType.POSTGRESQL;
+        return implementationName == StorageType.MARIADB
+                || implementationName == StorageType.POSTGRESQL;
     }
 }