lavalink.client.io.jda.JdaLink Java Examples

private static void ensureConnected(JdaLavalink lavalink, VoiceChannel voiceChannel) {
    JdaLink link = lavalink.getLink(voiceChannel.getGuild());
    link.connect(voiceChannel);
    long started = System.currentTimeMillis();
    while (link.getState() != Link.State.CONNECTED
            && System.currentTimeMillis() - started < 10000 //wait 10 sec max
            && !Thread.currentThread().isInterrupted()) {
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        link.connect(voiceChannel);
    }

    assertEquals(Link.State.CONNECTED, link.getState(), "Failed to connect to voice channel in a reasonable amount of time");
}
 

public static CompletionStage<Void> openAudioConnection(GuildMessageReceivedEvent event, JdaLink link, VoiceChannel userChannel, I18nContext lang) {
    if (userChannel.getUserLimit() <= userChannel.getMembers().size() && userChannel.getUserLimit() > 0 && !event.getGuild().getSelfMember().hasPermission(Permission.MANAGE_CHANNEL)) {
        event.getChannel().sendMessageFormat(lang.get("commands.music_general.connect.full_channel"), EmoteReference.ERROR).queue();
        return completedFuture(null);
    }

    try {
        //This used to be a CompletableFuture that went through a listener which is now useless bc im 99% sure you can't listen to the connection status on LL.
        joinVoiceChannel(link, userChannel);
        event.getChannel().sendMessageFormat(lang.get("commands.music_general.connect.success"), EmoteReference.CORRECT, userChannel.getName()).queue();
        return completedFuture(null);
    } catch (NullPointerException e) {
        e.printStackTrace();
        event.getChannel().sendMessageFormat(lang.get("commands.music_general.connect.non_existent_channel"), EmoteReference.ERROR).queue();

        //Reset custom channel.
        DBGuild dbGuild = MantaroData.db().getGuild(event.getGuild());
        dbGuild.getData().setMusicChannel(null);
        dbGuild.saveAsync();
        CompletableFuture<Void> future = new CompletableFuture<>();
        future.completeExceptionally(e);
        return future;
    }
}
 

private boolean isInConditionTo(Context ctx, JdaLink player) {
    try {
        if (!ctx.getMember().getVoiceState().inVoiceChannel() || !ctx.getMember().getVoiceState().getChannel().getId().equalsIgnoreCase(player.getChannel())) {
            if (isDJ(ctx.getMember())) {
                return true;
            }

            sendNotConnectedToMyChannel(ctx.getChannel(), ctx.getLanguageContext());
            return false;
        }

        return true;
    } catch (NullPointerException e) {
        if (ctx.getSelfMember().getVoiceState().inVoiceChannel())
            log.error("Possible bug? No player even though bot is connected to a channel!", e);

        ctx.sendLocalized("commands.music_general.no_player", EmoteReference.ERROR);
        return false; //No player to stop/change?
    }
}
 

public GuildMusicManager(String guildId) {
    this.guildId = guildId;

    JdaLink lavaLink = MantaroBot.getInstance().getLavaLink().getLink(guildId);
    trackScheduler = new TrackScheduler(lavaLink, guildId);

    lavaLink.getPlayer().addListener(trackScheduler);
}
 

public JdaLink getLavaLink() {
    return MantaroBot.getInstance().getLavaLink().getLink(guildId);
}
 

public static CompletionStage<Boolean> connectToVoiceChannel(GuildMessageReceivedEvent event, I18nContext lang) {
    VoiceChannel userChannel = event.getMember().getVoiceState().getChannel();
    Guild guild = event.getGuild();
    TextChannel textChannel = event.getChannel();

    //I can't see you in any VC here?
    if (userChannel == null) {
        textChannel.sendMessageFormat(lang.get("commands.music_general.connect.user_no_vc"), EmoteReference.ERROR).queue();
        return completedFuture(false);
    }

    //Can't connect to this channel
    if (!guild.getSelfMember().hasPermission(userChannel, Permission.VOICE_CONNECT)) {
        textChannel.sendMessageFormat(lang.get("commands.music_general.connect.missing_permissions_connect"), EmoteReference.ERROR, lang.get("discord_permissions.voice_connect")).queue();
        return completedFuture(false);
    }

    //Can't speak on this channel
    if (!guild.getSelfMember().hasPermission(userChannel, Permission.VOICE_SPEAK)) {
        textChannel.sendMessageFormat(lang.get("commands.music_general.connect.missing_permission_speak"), EmoteReference.ERROR, lang.get("discord_permissions.voice_speak")).queue();
        return completedFuture(false);
    }

    //Set the custom guild music channel from the db value
    VoiceChannel guildMusicChannel = null;
    if (MantaroData.db().getGuild(guild).getData().getMusicChannel() != null)
        guildMusicChannel = guild.getVoiceChannelById(MantaroData.db().getGuild(guild).getData().getMusicChannel());

    //This is where we call LL.
    JdaLink link = MantaroBot.getInstance().getAudioManager().getMusicManager(guild).getLavaLink();
    if (guildMusicChannel != null) {
        //If the channel is not the set one, reject this connect.
        if (!userChannel.equals(guildMusicChannel)) {
            textChannel.sendMessageFormat(lang.get("commands.music_general.connect.channel_locked"), EmoteReference.ERROR, guildMusicChannel.getName()).queue();
            return completedFuture(false);
        }

        //If the link is not currently connected or connecting, accept connection and call openAudioConnection
        if (link.getState() != Link.State.CONNECTED && link.getState() != Link.State.CONNECTING) {
            log.debug("Connected to channel {}. Reason: Link is not CONNECTED or CONNECTING and we requested a connection from connectToVoiceChannel (custom music channel)", userChannel.getId());
            return openAudioConnection(event, link, userChannel, lang).thenApply(__ -> true);
        }

        //Nothing to connect to, but pass true so we can load the song (for example, it's already connected)
        return completedFuture(true);
    }

    //Assume last channel it's the one it was attempting to connect to? (on the one below this too)
    //If the link is CONNECTED and the lastChannel is not the one it's already connected to, reject connection
    if (link.getState() == Link.State.CONNECTED && link.getLastChannel() != null && !link.getLastChannel().equals(userChannel.getId())) {
        textChannel.sendMessageFormat(lang.get("commands.music_general.connect.already_connected"), EmoteReference.WARNING, guild.getVoiceChannelById(link.getLastChannel()).getName()).queue();
        return completedFuture(false);
    }

    //If the link is CONNECTING and the lastChannel is not the one it's already connected to, reject connection
    if (link.getState() == Link.State.CONNECTING && link.getLastChannel() != null && !link.getLastChannel().equals(userChannel.getId())) {
        textChannel.sendMessageFormat(lang.get("commands.music_general.connect.attempting_to_connect"), EmoteReference.ERROR, guild.getVoiceChannelById(link.getLastChannel()).getName()).queue();
        return completedFuture(false);
    }

    //If the link is not currently connected or connecting, accept connection and call openAudioConnection
    if (link.getState() != Link.State.CONNECTED && link.getState() != Link.State.CONNECTING) {
        log.debug("Connected to voice channel {}. Reason: Link is not CONNECTED or CONNECTING and we requested a connection from connectToVoiceChannel", userChannel.getId());
        return openAudioConnection(event, link, userChannel, lang).thenApply(__ -> true);
    }

    //Nothing to connect to, but pass true so we can load the song (for example, it's already connected)
    return completedFuture(true);
}
 

private static void joinVoiceChannel(JdaLink manager, VoiceChannel channel) {
    manager.connect(channel);
}