GH-404 Add currency example with multi file command. (#404)

examples/bukkit/src/main/java/dev/rollczi/example/bukkit/ExamplePlugin.java

@@ -11,6 +11,9 @@
 import dev.rollczi.example.bukkit.command.NumberCommand;
 import dev.rollczi.example.bukkit.command.RandomItemCommand;
 import dev.rollczi.example.bukkit.command.TeleportCommand;
+import dev.rollczi.example.bukkit.command.currency.CurrencyBalanceCommand;
+import dev.rollczi.example.bukkit.command.currency.CurrencyCommand;
+import dev.rollczi.example.bukkit.command.currency.CurrencyService;
 import dev.rollczi.example.bukkit.validator.IsNotOpValidator;
 import dev.rollczi.example.bukkit.validator.IsNotOp;
 import dev.rollczi.litecommands.bukkit.LiteBukkitMessages;
@@ -33,6 +36,9 @@ public class ExamplePlugin extends JavaPlugin {
 
     @Override
     public void onEnable() {
+        // [!] you don't have to use this service, it's just for demonstration [!]
+        CurrencyService currencyService = new CurrencyService();
+
         this.liteCommands = LiteCommandsBukkit.builder()
             // configure bukkit platform
             .settings(settings -> settings
@@ -51,7 +57,9 @@ public void onEnable() {
                 new FlyCommand(),
                 new GiveCommand(),
                 new RandomItemCommand(),
-                new NumberCommand()
+                new NumberCommand(),
+                new CurrencyCommand(currencyService),
+                new CurrencyBalanceCommand(currencyService)
             )
 
             // Custom annotation validators

examples/bukkit/src/main/java/dev/rollczi/example/bukkit/command/currency/CurrencyBalanceCommand.java

@@ -0,0 +1,29 @@
+package dev.rollczi.example.bukkit.command.currency;
+
+import dev.rollczi.litecommands.annotations.argument.Arg;
+import dev.rollczi.litecommands.annotations.command.Command;
+import dev.rollczi.litecommands.annotations.context.Context;
+import dev.rollczi.litecommands.annotations.execute.Execute;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+@Command(name = "currency balance")
+public class CurrencyBalanceCommand {
+
+    private final CurrencyService currencyService;
+
+    public CurrencyBalanceCommand(CurrencyService currencyService) {
+        this.currencyService = currencyService;
+    }
+
+    @Execute
+    void balance(@Context Player sender) {
+        sender.sendMessage("Your balance is " + currencyService.getCurrency(sender.getUniqueId()));
+    }
+
+    @Execute
+    void balance(@Context CommandSender sender, @Arg Player player) {
+        sender.sendMessage(player.getName() + "'s balance is " + currencyService.getCurrency(player.getUniqueId()));
+    }
+
+}

examples/bukkit/src/main/java/dev/rollczi/example/bukkit/command/currency/CurrencyCommand.java

@@ -0,0 +1,60 @@
+package dev.rollczi.example.bukkit.command.currency;
+
+import dev.rollczi.litecommands.annotations.argument.Arg;
+import dev.rollczi.litecommands.annotations.command.Command;
+import dev.rollczi.litecommands.annotations.context.Context;
+import dev.rollczi.litecommands.annotations.execute.Execute;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+@Command(name = "currency")
+public class CurrencyCommand {
+
+    private final CurrencyService currencyService;
+
+    public CurrencyCommand(CurrencyService currencyService) {
+        this.currencyService = currencyService;
+    }
+
+    @Execute(name = "give")
+    void give(@Context CommandSender sender, @Arg Player player, @Arg int amount) {
+        currencyService.addCurrency(player.getUniqueId(), amount);
+
+        sender.sendMessage("Given " + amount + " to " + player.getName());
+        player.sendMessage("You have received " + amount + " from " + sender.getName());
+    }
+
+    @Execute(name = "take")
+    void take(@Context CommandSender sender, @Arg Player player, @Arg int amount) {
+        currencyService.removeCurrency(player.getUniqueId(), amount);
+
+        sender.sendMessage("Taken " + amount + " from " + player.getName());
+        player.sendMessage("Your balance has been reduced by " + amount + " by " + sender.getName());
+    }
+
+    @Execute(name = "set")
+    void set(@Context CommandSender sender, @Arg Player player, @Arg int amount) {
+        currencyService.setCurrency(player.getUniqueId(), amount);
+
+        sender.sendMessage("Set " + amount + " to " + player.getName());
+        player.sendMessage("Your balance has been set to " + amount + " by " + sender.getName());
+    }
+
+    @Execute(name = "take")
+    void reset(@Context CommandSender sender, @Arg Player player) {
+        currencyService.setCurrency(player.getUniqueId(), 0);
+
+        sender.sendMessage("Reset " + player.getName());
+        player.sendMessage("Your balance has been reset by " + sender.getName());
+    }
+
+    @Execute(name = "pay")
+    void pay(@Context Player sender, @Arg Player player, @Arg int amount) {
+        currencyService.addCurrency(player.getUniqueId(), amount);
+        currencyService.removeCurrency(sender.getUniqueId(), amount);
+
+        sender.sendMessage("Paid " + amount + " to " + player.getName());
+        player.sendMessage("You have received " + amount + " from " + sender.getName());
+    }
+
+}

examples/bukkit/src/main/java/dev/rollczi/example/bukkit/command/currency/CurrencyService.java

@@ -0,0 +1,31 @@
+package dev.rollczi.example.bukkit.command.currency;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * This class is a simple service that stores currency for players. (Used for demonstration /currency command)
+ * {@link CurrencyCommand} and {@link CurrencyBalanceCommand} are using this service.
+ */
+public class CurrencyService {
+
+    private final Map<UUID, Integer> currency = new HashMap<>();
+
+    public void setCurrency(UUID uuid, int amount) {
+        currency.put(uuid, amount);
+    }
+
+    public void addCurrency(UUID uuid, int amount) {
+        currency.put(uuid, currency.getOrDefault(uuid, 0) + amount);
+    }
+
+    public void removeCurrency(UUID uuid, int amount) {
+        currency.put(uuid, currency.getOrDefault(uuid, 0) - amount);
+    }
+
+    public int getCurrency(UUID uuid) {
+        return currency.getOrDefault(uuid, 0);
+    }
+
+}