Move to new JDABuilder methods and rewrite Discord mention fetching.

README.md

@@ -21,6 +21,11 @@ can use it!
 * Mentioning the bridge from Discord will mention the last user to send
 a message on the Groupme side.
 
+## NOTE ON GATEWAY INTENTS
+By default, the bot will assume you have the server members intent
+checked. If not, it will fail to start (for now.) It is required for
+mentionables to function.
+
 ## Configuration
 The configuration of the bot must be in the same directory as the jar
 file, and must be called `Config.json`. A file will automatically be

src/main/java/io/banditoz/gmecord/Bot.java

@@ -6,6 +6,7 @@
 import io.banditoz.gmecord.web.WebServer;
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.JDABuilder;
+import net.dv8tion.jda.api.requests.GatewayIntent;
 import okhttp3.OkHttpClient;
 import okhttp3.logging.HttpLoggingInterceptor;
 import org.slf4j.Logger;
@@ -27,7 +28,7 @@ public class Bot {
     public Bot() {
         Settings settings = SettingsManager.getInstance().getSettings();
         try {
-            jda = new JDABuilder(settings.getDiscordToken()).build();
+            jda = JDABuilder.createLight(settings.getDiscordToken()).enableIntents(GatewayIntent.GUILD_MEMBERS).build();
             jda.awaitReady();
         } catch (Exception ex) {
             logger.error("Could not login! Exiting safely...", ex);

src/main/java/io/banditoz/gmecord/util/BuildMentionables.java

@@ -4,15 +4,21 @@
 import io.banditoz.gmecord.SettingsManager;
 import io.banditoz.gmecord.api.Member;
 import io.banditoz.gmecord.api.Response;
+import net.dv8tion.jda.api.entities.Guild;
 import net.dv8tion.jda.api.entities.User;
 import okhttp3.Request;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Objects;
 
 public class BuildMentionables {
+    private static final Logger LOGGER = LoggerFactory.getLogger(BuildMentionables.class);
+
     public static HashMap<String, String> buildGroupmeMentionables() throws IOException {
         HashMap<String, String> mentionables = new HashMap<>();
         String initialUrl = "https://api.groupme.com/v3/groups/" + SettingsManager.getInstance().getSettings().getGroupID() + "?token=" + SettingsManager.getInstance().getSettings().getGroupMeToken();
@@ -24,16 +30,19 @@ public static HashMap<String, String> buildGroupmeMentionables() throws IOExcept
         for (Member m : r.getResponse().getMembers()) {
             mentionables.put(m.getNickname(), m.getUserId());
         }
+        LOGGER.info("We have " + mentionables.size() + " Groupme members.");
         return mentionables;
     }
 
     public static HashMap<String, String> buildDiscordMentionables() {
-        List<net.dv8tion.jda.api.entities.Member> members = Bot.getJda().getTextChannelById(SettingsManager.getInstance().getSettings().getChannel()).getGuild().getMembers();
+        Guild g = Bot.getJda().getTextChannelById(SettingsManager.getInstance().getSettings().getChannel()).getGuild();
+        g.retrieveMembers().join(); // ..you MUST NOT use join()... https://i.kym-cdn.com/entries/icons/mobile/000/024/196/sign.jpg
         HashMap<String, String> mentionables = new HashMap<>();
-        for (net.dv8tion.jda.api.entities.Member member : members) {
+        for (net.dv8tion.jda.api.entities.Member member : g.getMembers()) {
             User u = member.getUser();
             mentionables.put(u.getName(), u.getId());
         }
+        LOGGER.info("We have " + mentionables.size() + " Discord members.");
         return mentionables;
     }
 }