Finish plugin

.vscode/settings.json

@@ -1,6 +1,6 @@
 {
   "java.configuration.updateBuildConfiguration": "automatic",
-  "java.compile.nullAnalysis.mode": "automatic",
+  "java.compile.nullAnalysis.mode": "disabled",
   "yaml.schemas": {
     "https://json.schemastore.org/bukkit-plugin.json": "file:///Users/oliver/gh/berkeleymt/minecraft-bridge/app/src/main/resources/plugin.yml"
   }

README.md

@@ -0,0 +1,5 @@
+# Minecraft ↔ Discord Chat Bridge
+
+Bridges Minecraft and Discord chats.
+
+I wrote this in like one hour, it works, don't judge code pls.

build.gradle.kts

@@ -1,5 +1,7 @@
 plugins {
     application
+    id("com.github.johnrengelman.shadow") version "8.1.1"
+    id("java")
 }
 
 repositories {
@@ -9,6 +11,8 @@ repositories {
 
 dependencies {
     compileOnly("io.papermc.paper:paper-api:1.19.4-R0.1-SNAPSHOT")
+    implementation("net.dv8tion:JDA:5.0.0-beta.9")
+    implementation("club.minnced:discord-webhooks:0.8.2")
 }
 
 java {

src/main/java/edu/berkeley/bmt/minecraft_discord_bridge/DiscordListener.java

@@ -0,0 +1,30 @@
+package edu.berkeley.bmt.minecraft_discord_bridge;
+
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.api.hooks.ListenerAdapter;
+import net.kyori.adventure.text.Component;
+
+public class DiscordListener extends ListenerAdapter {
+    private Plugin plugin;
+    private String channelId;
+
+    public DiscordListener(Plugin plugin, String channelId) {
+        this.plugin = plugin;
+        this.channelId = channelId;
+    }
+
+    @Override
+    public void onMessageReceived(MessageReceivedEvent event) {
+        plugin.getLogger().info("Received message: " + event.getMessage().getContentDisplay());
+
+        if (event.getAuthor().isBot()) {
+            return;
+        }
+        if (!event.getGuildChannel().getId().equals(channelId)) {
+            return;
+        }
+
+        String msg = String.format("《%s》 %s", event.getAuthor().getAsTag(), event.getMessage().getContentDisplay());
+        plugin.getServer().broadcast(Component.text(msg));
+    }
+}

src/main/java/edu/berkeley/bmt/minecraft_discord_bridge/MinecraftListener.java

@@ -0,0 +1,53 @@
+package edu.berkeley.bmt.minecraft_discord_bridge;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.PlayerDeathEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+
+import club.minnced.discord.webhook.WebhookClient;
+import club.minnced.discord.webhook.send.WebhookMessageBuilder;
+import io.papermc.paper.event.player.AsyncChatEvent;
+import net.dv8tion.jda.api.JDA;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
+
+public class MinecraftListener implements Listener {
+    private WebhookClient webhookClient;
+
+    public MinecraftListener(JDA jda, WebhookClient webhookClient) {
+        this.webhookClient = webhookClient;
+    }
+
+    private String componentToString(Component component) {
+        PlainTextComponentSerializer plainSerializer = PlainTextComponentSerializer.plainText();
+        return plainSerializer.serialize(component);
+    }
+
+    @EventHandler
+    public void onChat(AsyncChatEvent event) {
+        Player player = event.getPlayer();
+        WebhookMessageBuilder builder = new WebhookMessageBuilder();
+        builder.setUsername(player.getName());
+        builder.setAvatarUrl(String.format("https://crafatar.com/avatars/%s?overlay", player.getUniqueId().toString()));
+        builder.setContent(componentToString(event.message()));
+        webhookClient.send(builder.build());
+    }
+
+    @EventHandler
+    public void onPlayerJoin(PlayerJoinEvent event) {
+        webhookClient.send(componentToString(event.joinMessage()));
+    }
+
+    @EventHandler
+    public void onPlayerLeave(PlayerQuitEvent event) {
+        webhookClient.send(componentToString(event.quitMessage()));
+    }
+
+    @EventHandler
+    public void onPlayerDeath(PlayerDeathEvent event) {
+        webhookClient.send(componentToString(event.deathMessage()));
+    }
+}

src/main/java/edu/berkeley/bmt/minecraft_discord_bridge/Plugin.java

@@ -1,15 +1,34 @@
 package edu.berkeley.bmt.minecraft_discord_bridge;
 
-import org.bukkit.Bukkit;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
+import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.plugin.java.JavaPlugin;
 
-import io.papermc.paper.event.player.AsyncChatEvent;
+import club.minnced.discord.webhook.WebhookClient;
+import net.dv8tion.jda.api.JDA;
+import net.dv8tion.jda.api.JDABuilder;
+import net.dv8tion.jda.api.requests.GatewayIntent;
+
+public class Plugin extends JavaPlugin {
+    private FileConfiguration config = getConfig();
+    private JDA jda;
+    private DiscordListener discordListener;
+    private MinecraftListener minecraftListener;
 
-public class Plugin extends JavaPlugin implements Listener {
     @Override
     public void onEnable() {
-        Bukkit.getPluginManager().registerEvents(this, this);
+        saveDefaultConfig();
+        discordListener = new DiscordListener(this, config.getString("channel-id"));
+        jda = JDABuilder.createDefault(config.getString("bot-token"))
+                .enableIntents(GatewayIntent.MESSAGE_CONTENT)
+                .addEventListeners(discordListener)
+                .build();
+        jda.getRestPing().queue(ping -> getLogger().info("Connected to Discord with ping: " + ping));
+        minecraftListener = new MinecraftListener(jda, WebhookClient.withUrl(config.getString("webhook-url")));
+        getServer().getPluginManager().registerEvents(minecraftListener, this);
+    }
+
+    @Override
+    public void onDisable() {
+        jda.shutdown();
     }
 }

src/main/resources/config.yml

@@ -0,0 +1,3 @@
+bot-token: ""
+channel-id: ""
+webhook-url: ""