Clean up static abuse, use traditional OOP style

src/main/java/codes/ztereohype/ztereomusic/Bot.java

@@ -10,7 +10,9 @@ import codes.ztereohype.ztereomusic.listeners.CommandListener;
 import com.sedmelluq.discord.lavaplayer.player.AudioPlayerManager;
 import com.sedmelluq.discord.lavaplayer.player.DefaultAudioPlayerManager;
 import com.sedmelluq.discord.lavaplayer.source.AudioSourceManagers;
+import lombok.AccessLevel;
 import lombok.Getter;
+import lombok.Setter;
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.JDABuilder;
 
@@ -20,49 +22,63 @@ import java.util.Map;
 import static net.dv8tion.jda.api.requests.GatewayIntent.GUILD_MESSAGES;
 import static net.dv8tion.jda.api.requests.GatewayIntent.GUILD_VOICE_STATES;
 
+@Getter
+@Setter(AccessLevel.PRIVATE)
 public class Bot {
-    private static @Getter Config config;
-    private static @Getter JDA bot;
+    public static final Bot INSTANCE = new Bot();
 
-    private static @Getter final Map<String, Command> commandMap = new HashMap<>();
-    private static @Getter final Map<String, String> commandAliases = new HashMap<>();
+    private final Map<String, Command> commandMap = new HashMap<>();
+    private final Map<String, String> commandAliases = new HashMap<>();
 
-    public static AudioPlayerManager playerManager;
-    public static Map<Long, GuildMusicPlayer> guildMusicPlayerMap = new HashMap<>();
+    private Config config;
+    private JDA jda;
+
+    private AudioPlayerManager playerManager;
+    private Map<Long, GuildMusicPlayer> guildMusicPlayerMap = new HashMap<>();
+
+    private Bot() {
+    }
+
+    public static Bot getInstance() {
+        return Bot.INSTANCE;
+    }
 
     public static void main(String[] args) throws Exception {
-        config = new Config("./config.json5");
-        bot = JDABuilder.createDefault(config.getPropreties().get("token"), GUILD_MESSAGES, GUILD_VOICE_STATES).build().awaitReady();
+        Bot bot = Bot.getInstance();
 
-        setupAudio();
-        setCommands();
-        setListeners();
+        bot.setConfig(new Config("./config.json5"));
+        bot.setJda(JDABuilder.createDefault(bot.getConfig().getPropreties().get("token"), GUILD_MESSAGES,
+                                            GUILD_VOICE_STATES).build().awaitReady());
+
+        bot.setupAudio();
+        bot.setCommands();
+        bot.setListeners();
     }
 
-    public static void setCommands() {
+    private void setCommands() {
         Ping ping = new Ping();
-        commandMap.put(ping.getMeta().getName(), ping);
+        this.getCommandMap().put(ping.getMeta().getName(), ping);
 
         Play play = new Play();
-        commandMap.put(play.getMeta().getName(), play);
+        this.getCommandMap().put(play.getMeta().getName(), play);
 
         Skip skip = new Skip();
-        commandMap.put(skip.getMeta().getName(), skip);
+        this.getCommandMap().put(skip.getMeta().getName(), skip);
 
-        for (String commandName : commandMap.keySet()) {
-            for (String aliasName : commandMap.get(commandName).getMeta().getAliases()) {
-                commandAliases.put(aliasName, commandName);
+        for (String commandName : this.getCommandAliases().keySet()) {
+            for (String aliasName : this.getCommandMap().get(commandName).getMeta().getAliases()) {
+                this.getCommandAliases().put(aliasName, commandName);
             }
         }
     }
 
-    public static void setupAudio() {
-        playerManager = new DefaultAudioPlayerManager();
-        AudioSourceManagers.registerRemoteSources(playerManager);
-        AudioSourceManagers.registerLocalSource(playerManager);
+    private void setupAudio() {
+        this.setPlayerManager(new DefaultAudioPlayerManager());
+        AudioSourceManagers.registerRemoteSources(this.getPlayerManager());
+        AudioSourceManagers.registerLocalSource(this.getPlayerManager());
     }
 
-    public static void setListeners() {
-        bot.addEventListener(new CommandListener());
+    private void setListeners() {
+        this.getJda().addEventListener(new CommandListener());
     }
 }

src/main/java/codes/ztereohype/ztereomusic/audio/GuildMusicPlayers.java

@@ -14,14 +14,14 @@ public class GuildMusicPlayers {
 
         // If I get called in a different vc I delete the old manager
         if (!isInSameVC) {
-            Bot.guildMusicPlayerMap.remove(guildId);
+            Bot.getInstance().getGuildMusicPlayerMap().remove(guildId);
         }
 
-        GuildMusicPlayer musicPlayer = Bot.guildMusicPlayerMap.get(guildId);
+        GuildMusicPlayer musicPlayer = Bot.getInstance().getGuildMusicPlayerMap().get(guildId);
 
         if (musicPlayer == null) {
-            musicPlayer = new GuildMusicPlayer(Bot.playerManager, infoChannel);
-            Bot.guildMusicPlayerMap.put(guildId, musicPlayer);
+            musicPlayer = new GuildMusicPlayer(Bot.getInstance().getPlayerManager(), infoChannel);
+            Bot.getInstance().getGuildMusicPlayerMap().put(guildId, musicPlayer);
             guild.getAudioManager().openAudioConnection(requestedChannel);
         }
 
@@ -33,7 +33,7 @@ public class GuildMusicPlayers {
     // stops player, disconnects from vc, and deletes the wrapper
     public static void removeGuildAudioPlayer(Guild guild) {
         long guildId = guild.getIdLong();
-        GuildMusicPlayer musicPlayer = Bot.guildMusicPlayerMap.get(guildId);
+        GuildMusicPlayer musicPlayer = Bot.getInstance().getGuildMusicPlayerMap().get(guildId);
 
         if (musicPlayer == null) return;
 
@@ -41,6 +41,6 @@ public class GuildMusicPlayers {
         guild.getAudioManager().closeAudioConnection();
 
         //todo: remove this when will be part of disconnection listener
-        Bot.guildMusicPlayerMap.remove(guildId);
+        Bot.getInstance().getGuildMusicPlayerMap().remove(guildId);
     }
 }

src/main/java/codes/ztereohype/ztereomusic/command/commands/Play.java

@@ -43,7 +43,7 @@ public class Play implements Command {
         VoiceChannel voiceChannel = author.getVoiceState().getChannel();
         MessageChannel messageChannel = messageEvent.getChannel();
         AudioManager manager = guild.getAudioManager();
-        AudioPlayerManager playerManager = Bot.playerManager;
+        AudioPlayerManager playerManager = Bot.getInstance().getPlayerManager();
 
         // check if args merged are/have url, if so try to feed it into lava, else try to youtube api the fuck out of it.
         String mergedArgs = String.join(" ", args);

src/main/java/codes/ztereohype/ztereomusic/listeners/CommandListener.java

@@ -12,9 +12,9 @@ import java.util.Map;
 
 public class CommandListener extends ListenerAdapter {
     // TODO: load prefix from a config
-    private static final String PREFIX = Bot.getConfig().getPropreties().get("prefix");
-    private static final Map<String, Command> COMMAND_MAP = Bot.getCommandMap();
-    private static final Map<String, String> COMMAND_ALIASES = Bot.getCommandAliases();
+    private static final String PREFIX = Bot.getInstance().getConfig().getPropreties().get("prefix");
+    private static final Map<String, Command> COMMAND_MAP = Bot.getInstance().getCommandMap();
+    private static final Map<String, String> COMMAND_ALIASES = Bot.getInstance().getCommandAliases();
 
     @Override
     public void onMessageReceived(@Nonnull MessageReceivedEvent event) {