Add config.yml support for port, host and MOTD

build.gradle.kts

@@ -21,6 +21,9 @@ dependencies {
     
     // Logging
     implementation("org.slf4j:slf4j-simple:2.0.9")
+    
+    // Config
+    implementation("org.yaml:snakeyaml:2.2")
 }
 
 application {

config.yml

@@ -0,0 +1,4 @@
+# JStom Configuration
+host: "0.0.0.0"
+port: 25565
+motd: "A JStom Server"

src/main/java/net/jstom/Config.java

@@ -0,0 +1,48 @@
+package net.jstom;
+
+import org.yaml.snakeyaml.Yaml;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+public class Config {
+    public static int PORT = 25565;
+    public static String MOTD = "A JStom Server";
+    public static String HOST = "0.0.0.0";
+
+    private static final String CONFIG_FILE = "config.yml";
+
+    public static void load() {
+        File file = new File(CONFIG_FILE);
+        Yaml yaml = new Yaml();
+
+        if (!file.exists()) {
+            saveDefault();
+        }
+
+        try (InputStream inputStream = new FileInputStream(file)) {
+            Map<String, Object> data = yaml.load(inputStream);
+            if (data != null) {
+                if (data.containsKey("port")) PORT = (int) data.get("port");
+                if (data.containsKey("motd")) MOTD = (String) data.get("motd");
+                if (data.containsKey("host")) HOST = (String) data.get("host");
+            }
+        } catch (IOException e) {
+            System.err.println("Could not load config.yml: " + e.getMessage());
+        }
+    }
+
+    private static void saveDefault() {
+        try (FileWriter writer = new FileWriter(CONFIG_FILE)) {
+            writer.write("# JStom Configuration\n");
+            writer.write("host: \"0.0.0.0\"\n");
+            writer.write("port: 25565\n");
+            writer.write("motd: \"A JStom Server\"\n");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/main/java/net/jstom/Main.java

@@ -11,12 +11,17 @@ import net.minestom.server.instance.InstanceContainer;
 import net.minestom.server.instance.InstanceManager;
 import net.minestom.server.instance.LightingChunk;
 import net.minestom.server.instance.block.Block;
+import net.minestom.server.ping.Status;
+import net.kyori.adventure.text.Component;
 
 import java.io.File;
 import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
+        // Load Config
+        Config.load();
+
         // Initialize server
         MinecraftServer minecraftServer = MinecraftServer.init();
 
@@ -36,6 +41,13 @@ public class Main {
             event.setSpawningInstance(instanceContainer);
             player.setRespawnPoint(new Pos(0, 42, 0));
         });
+        
+        // MOTD
+        globalEventHandler.addListener(ServerListPingEvent.class, event -> {
+            event.setStatus(Status.builder(event.getStatus())
+                .description(Component.text(Config.MOTD))
+                .build());
+        });
 
         // Initialize Script Manager
         ScriptManager scriptManager = new ScriptManager(new File("scripts"));
@@ -55,6 +67,9 @@ public class Main {
                         System.out.println("Reloading " + fileName + "...");
                         scriptManager.reload(fileName);
                     } else {
+                        // Reload config too
+                        Config.load();
+                        System.out.println("Configuration reloaded.");
                         System.out.println("Reloading all scripts...");
                         scriptManager.reload();
                     }
@@ -65,10 +80,10 @@ public class Main {
             }
         }).start();
 
-        System.out.println("Server starting on port 25565");
-        System.out.println("Type 'reload' to reload all scripts, or 'reload <filename.js>' for a specific file.");
+        System.out.println("Server starting on " + Config.HOST + ":" + Config.PORT);
+        System.out.println("Type 'reload' to reload scripts and config, or 'reload <filename.js>' for a specific file.");
         
         // Start the server
-        minecraftServer.start("0.0.0.0", 25565);
+        minecraftServer.start(Config.HOST, Config.PORT);
     }
 }