refactor ig

velocity/src/main/java/de/kentoj/kencommandapi/VelocityCommand.java

@@ -0,0 +1,53 @@
+package de.kentoj.kencommandapi;
+
+import com.velocitypowered.api.command.CommandSource;
+import com.velocitypowered.api.command.RawCommand;
+import de.kentoj.kencommandapi.api.CommandHandler;
+import de.kentoj.kencommandapi.api.literal.RootLiteral;
+import de.kentoj.kencommandapi.api.platform.MessageStyle;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class VelocityCommand<T extends CommandSource> implements RawCommand {
+
+    private final CommandHandler<T> commandHandler;
+    private final RootLiteral<T> rootNode;
+    private final Class<T> senderType;
+
+    public VelocityCommand(CommandHandler<T> commandHandler, RootLiteral<T> rootNode, Class<T> senderType) {
+        this.commandHandler = commandHandler;
+        this.rootNode = rootNode;
+        this.senderType = senderType;
+    }
+
+    @Override
+    public void execute(Invocation invocation) {
+        if (!senderType.isInstance(invocation.source())) {
+            invocation.source().sendMessage(MessageStyle.PLAIN.err("You can't use that command"));
+            return;
+        }
+        T sender = senderType.cast(invocation.source());
+
+        var args = Arrays.stream(invocation.arguments().split(" "))
+                .filter(a -> !a.isEmpty());
+        commandHandler.invoke(rootNode, sender, args);
+    }
+
+    @Override
+    public boolean hasPermission(Invocation ctx) {
+        if (rootNode.permission() == null) return true;
+        return ctx.source().hasPermission(rootNode.permission());
+    }
+
+    @Override
+    public List<String> suggest(Invocation invocation) {
+        if (!senderType.isInstance(invocation.source()))
+            return Collections.emptyList();
+        T sender = senderType.cast(invocation.source());
+
+        var args = invocation.arguments().split(" ");
+        return commandHandler.getSuggestions(rootNode, sender, args, invocation.arguments().endsWith(" "));
+    }
+}