ping pong

Author: Lupus590

build.gradle

@@ -11,20 +11,6 @@ repositories {
 
 dependencies {
     testCompile group: 'junit', name: 'junit', version: '4.12'
-    compile ('net.dv8tion:JDA:VERSION') {
-        exclude module: 'opus-java'
-    }
-}
-version '1.0-SNAPSHOT'
-
-apply plugin: 'java'
-
-sourceCompatibility = 1.8
-
-repositories {
-    mavenCentral()
+    compile 'net.dv8tion:JDA:3.8.1_454'
 }
 
-dependencies {
-    testCompile group: 'junit', name: 'junit', version: '4.12'
-}

settings.gradle

@@ -1,3 +1,2 @@
 rootProject.name = 'Lupus590.C4Bot'
-rootProject.name = 'Lupus590.C4Bot'
 

src/main/java/MessageListener.java

@@ -0,0 +1,28 @@
+import net.dv8tion.jda.client.entities.Group;
+import net.dv8tion.jda.core.JDA;
+import net.dv8tion.jda.core.JDABuilder;
+import net.dv8tion.jda.core.Permission;
+import net.dv8tion.jda.core.entities.*;
+import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.core.exceptions.PermissionException;
+import net.dv8tion.jda.core.exceptions.RateLimitedException;
+import net.dv8tion.jda.core.hooks.ListenerAdapter;
+
+public class MessageListener extends ListenerAdapter
+{
+    @Override
+    public void onMessageReceived(MessageReceivedEvent event)
+    {
+        if (event.getAuthor().isBot()) return;
+        // We don't want to respond to other bot accounts, including ourself
+        Message message = event.getMessage();
+        String content = message.getContentRaw();
+        // getContentRaw() is an atomic getter
+        // getContentDisplay() is a lazy getter which modifies the content for e.g. console view (strip discord formatting)
+        if (content.equals("!ping"))
+        {
+            MessageChannel channel = event.getChannel();
+            channel.sendMessage("Pong!").queue(); // Important to call .queue() on the RestAction returned by sendMessage(...)
+        }
+    }
+}

src/main/java/main.java

@@ -1,6 +1,23 @@
+import net.dv8tion.jda.client.entities.Group;
+import net.dv8tion.jda.core.JDA;
+import net.dv8tion.jda.core.JDABuilder;
+import net.dv8tion.jda.core.Permission;
+import net.dv8tion.jda.core.entities.*;
+import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.core.exceptions.PermissionException;
+import net.dv8tion.jda.core.exceptions.RateLimitedException;
+import net.dv8tion.jda.core.hooks.ListenerAdapter;
+
 public class main {
-    public static void main(String[] args)
+    public static void main(String[] args) throws Exception
     {
-        System.out.println("hello world");
+        if(args[0].isEmpty()) {
+            System.out.println("Please run again passing in a bot token");
+            return;
+        }
+
+        System.out.println("Using Discord bot token: "+args[0]);
+        JDA jda = new JDABuilder(args[0]).build();
+        jda.addEventListener(new MessageListener());
     }
 }