!7

/*static MapSO _renameClasses = litmap(

  "DynDiscordHopper" := "DynShardedDiscordHopper",

  "DynServerAwareDiscordBot" := "DynShardedServerAwareDiscordBot",

  "DynTalkBot2" := "DynShardedTalkBot2");*/

set flag JDA40.

!include once #1034054 // DynTalkBot2 with sharding

!include once #1034056 // DynServerAwareDiscordBot

!include once #1034057 // DynDiscordHopper

// TODO: on restart, check if we actually are in vc with voiceChannelID

// (if permissions have changed)

// Changes in this version:

// uploadImagesAsFiles

// !!!listeners fixed

// check if embed fields are longer than 1k

// Note: dm owners only takes ONE LINE

// TODO: send dms only once when owner has two guilds

!include once #1030357 // Discord Audio

cmodule MKLabFM extends DynTalkBot2<.ByServer> {

  switchable S radioURL = "http://streamlive2.hearthis.at:8080/26450.ogg";

  switchable S currentSongURL = "https://widgets.autopo.st/widgets/public/MKLabFM/nowplaying.php";

  switchable S coverArtURL = "http://95.154.196.33:26687/playingart?sid=1&rand=<RNDINT>";

  switchable bool enableShadowStop = true;

  switchable bool putSongInStatus = true;

  transient double bufferSeconds = 30.0;

  transient int grabInterval = 15; // try to grab frames quicker to see if it fixes the jumps

  transient double considerDownInterval = 60.0;

  // restart stream when no frames received for this long

  transient double autoRestartInterval = 20.0;

  switchable S madeBy = trim([[

MKLab: <https://tinyurl.com/musikcolabradiofm>

Support channel: <https://discord.gg/u6E4muY>

Bot by: <https://BotCompany.de>

You like this bot? Donate: <https://paypal.me/BotCompany>

]]);

  switchable S voteLink = "\n\nPlease help us grow by voting here: <https://discordbots.org/bot/625377645982384128>";

  switchable S npMsg = "Now playing: <track> - Listen at }{ https://tinyurl.com/mklab-live-fm }{ #edm #music #radio #ibiza #dance #chillout #psy #live #miami #memes #detroit #techno #dj #synthwave #housemusic #deephouse #onair";

  switchable bool uploadImagesAsFiles = true;

  transient SimpleCircularBuffer<byte[]> buffer;

  transient AudioPlayer player;

  switchable transient bool simulateStreamDown, restartNow;

  transient long lastFrameReceived, lastActualFrameReceived; // sys time

  transient long moduleStarted; // sys time

  transient NotTooOften postRestarting = onlyEveryHour();

  transient S currentSong;

  // stats

  transient new AtomicLong framesReceived;

  transient new AtomicLong canProvideCalls;

  transient new AtomicLong provideCalls;

  transient new AtomicLong dataSent;

  O _getReloadData() { ret currentSong; }

  void _setReloadData(S data) { currentSong = data; }

  void init {

    super.init();

    myName = "!!!";

    makeByServer = () -> new ByServer;

    dropPunctuation = false;

    preprocessAtSelfToMyName = true;

    ngbCommands = false;

    sendToPostedLinesCRUD = false;

    // First thing, start the stream, so we can restart the radios

    initStream();

    onDiscordStarted(r {

      temp enter();

      print("Bot back up");

      for (Long id, ByServer bs : cloneMap(dataByServer)) { pcall {

        bs.restart(discord.getGuildById(id));

      }}

      postInChannel(nextGenBotsTestRoomID(), "Rebooted " + computerID() + "/" + dm_moduleID());

    });

    onDiscordEvent(e -> {

      if (e cast GenericGuildVoiceEvent)

        getByServer(e.getGuild()).handleVoiceUpdateEvent(e);

    });

    doEveryAndNow(20.0, r grabSong);

    doEvery(60.0, r updateVoiceChannelCount_allServers);

  }

  void initStream {

    buffer = new SimpleCircularBuffer(iround(bufferSeconds*50));

    player = lavaPlayer_createPlayer();

    lavaPlayer_printPlayerEvents(player);

    print("Have player");

    doEvery(grabInterval, r {

      temp enter();

      if (!simulateStreamDown) {

        AudioFrame frame = player.provide();

        if (frame != null) {

          buffer.add(frame.getData());

          inc(framesReceived);

          lastFrameReceived = lastActualFrameReceived = sysNow();

        }

      }

    });

    doEvery(1.0, r {

      temp enter();

      if (discord == null) ret;

      if (restartNow || elapsedSeconds(lastFrameReceived) >= autoRestartInterval) {

        if (postRestarting.yo())

          postInChannel(nextGenBotsTestRoomID(), "Restarting radio stream");

        simulateStreamDown = restartNow = false;

        lastFrameReceived = sysNow();

        loadTrack();

        lastFrameReceived = sysNow();

      }

    });

  }

  class ByServer extends DynTalkBot2.ByServer {

    bool shouldBePlaying;

    long voiceChannelID, lastVoiceChannelID;

    long songChannelID;

    transient S voiceChannelName;

    transient VoiceChannel vc;

    transient MyAudioSendHandler sendHandler;

    transient Set<Long> usersInVoiceChannel = synchroSet();

    synchronized S processSimplifiedLine(S s, O... _) enter {

      try {

        ret processSimplifiedLine2(s, _);

      } catch print e {

        if (cic(str(e), "InsufficientPermission"))

          ret "There were insufficient permissions to perform this action.";

        ret "Sorry, an error occurred trying to perform this action.";

      }

    }

    synchronized S processSimplifiedLine2(S s, O... _) {

      try answer super.processSimplifiedLine(s, _); // add authorized users etc.

      new Matches m;

      print("myPrefix", quote(myPrefix()));

      s = dropMyPrefixOrNull(s);

      print("dropped", quote(s));

      if (s == null) null;

      optPar Message msg;

      Guild guild = msg.getGuild();

      Member member = msg == null ? null : msg.getMember();

      if (eqic(s, "help")) {

        optPar MessageChannel channel;

        S syntax = trim([[

`@me play | start` - start playing

`@me stop | pause` - stop playing

`@me leave` - leave voice channel

`@me help` - show this help

`@me np` - show currently playing song

`@me join` - join any voice channel

`@me set channel` - post now playing track names in current channel

`@me stop posting` - stop posting track names

[MORE]

]].replace("\n[MORE]", renderChannelListIfNotOne(guild))

  .replace("@me ", myPrefix()))

          + voteLink;

        new EmbedBuilder eb;

        eb.setColor(Color.yellow);

        eb.setAuthor("MKLab FM Bot", null, null);

        eb.setTitle("Purpose", null);

        eb.setDescription("I play MKLab FM, the best Electronic Dance Music Radio, in a voice channel of your choice.");

        discordEmbed_addField(eb, "Syntax", syntax);

        if (authed(_))

          eb.addField("Admin commands", rtrim([[

`@me guild count/guild names` - show stats

`@me reboot` - reboot the whole bot (if music stream is completely broken for some reason)

`@me dm owners: <message>` - DM all guild owners where radio is playing

`@me stream url http...` - set stream URL. current: $STREAMURL

`@me np url http...` - set current song URL. current: $NPURL

`@me cover url http...` - set cover art URL. current: $COVERURL

`@me cover url -` - disable cover art

`@me np msg Playing <track>...` - set nowplaying message. current: $NPMSG

`@me listeners` - full list of listeners

]])

  .replace("@me ", myPrefix())

  .replace("$STREAMURL", backtickQuote(radioURL))

  .replace("$NPURL", backtickQuote(currentSongURL))

  .replace("$NPMSG", backtickQuote(npMsg))

  .replace("$COVERURL", backtickQuote(coverArtURL)), false);

        eb.addField("Made by", madeBy, false);

        eb.setThumbnail(imageSnippetURL(#1102722));

        channel.sendMessage(eb.build()).queue();

        null;

      }

      if (guild == null) null;

      if (authed(_)) {

        /*if "restart radios"

          ret "OK" with restartRadios();*/

        if "reboot" {

          doAfter(2.0, rEnter dm_reload);

          ret "OK, rebooting bot";

        }

        if "simulate stream down" {

          simulateStreamDown = true;

          ret "OK";

        }

        if (swic_trim(s, "dm owners:", m))

          ret dmOwners($1);

        if (swic_trim(s, "stream url ", m) && isWebURL(m.rest())) {

          if (!MKLabFM.this.setField(radioURL := m.rest())) ret "No change";

          restartNow = true;

          ret "OK, restarting with radio URL " + radioURL;

        }

        if (swic_trim(s, "np url ", m) && isWebURL(m.rest())) {

          if (!MKLabFM.this.setField(currentSongURL := m.rest())) ret "No change";

          ret "Current song URL changed to " + currentSongURL;

        }

        if (swic_trim(s, "cover url ", m)) {

          if (!MKLabFM.this.setField(coverArtURL := m.rest())) ret "No change";

          ret "Cover art URL changed to " + coverArtURL;

        }

        if (swic_trim(s, "np msg ", m)) {

          if (!MKLabFM.this.setField(npMsg := m.rest())) ret "No change";

          ret "Nowplaying message changed to " + npMsg;

        }

        if "listeners"

          ret or2(listeningUsers_full(), "No listeners");

      }

      if (matchX2("play ...|start...|radio|radio on", s))

        ret action_play(guild, member);

      if (matchX2("stop ...|pause ...|quiet|silence|shut up|... off", s) && !match("stop posting", s)) 

        ret action_stop(guild);

      if (matchX2("leave|leave channel|leave voice channel", s))

        ret action_leave(guild);

      if (matchX2("join|join channel|join voice channel", s))

        ret action_join(guild, member);

      if (matchX2("... channel *", s, m) && isInteger($1))

        ret action_selectChannel(guild, parseInt($1));

      if (matchX2("np|n p|... song ...|... playing ...", s))

        ret "MKLab FM is currently playing: " + (nempty(currentSong) ? backtickQuote(currentSong) : "Hmm. Not sure, I think something went wrong.");

      if (matchX2("set channel|post here|set np", s)) {

        long channelID = longPar channelID(_);

        if (channelID == 0) ret "Please do this in a channel";

        if (songChannelID != channelID) {

          songChannelID = channelID;

          change();

        }

        doAfter(2.0, r postSong);

        ret "OK, I will post the currently playing tracks in this channel. Type `" + atSelfOrMyName_space() + "stop posting` to stop.";

      }

      if (matchX2("stop posting|no channel", s)) {

        songChannelID = 0;

        change();

        ret "OK";

      }

      if "users in channel" 

        ret "Users in voice channel: " + n2(usersInVoiceChannel);

      if "internal stats"

        ret "Frames received: " + n2(framesReceived!)

          + ", canProvide calls: " + n2(canProvideCalls!)

          + ", provide calls: " + n2(provideCalls!)

          + ", bytes sent: " + n2(dataSent!);

      null;

    }

    S renderGuildCount() {

      L<Guild> guilds = discord.getGuilds();

      int shouldPlayCount = 0, shadowCount = 0;

      for (Guild guild : guilds) {

        ByServer bs = getByServer(guild.getIdLong(), true);

        if (bs != null) {

          //if (bs.playing) ++playCount;

          if (bs.shouldBePlaying) {

            ++shouldPlayCount;

            if (bs.shadowStopped()) ++shadowCount;

          }

        }

      }

      ret super.renderGuildCount() + ". " + nRadios(shouldPlayCount-shadowCount) + " playing to " + n2(listeningUsers(), "listener") + ", " + shadowCount + " playing without listeners";

    }

    void joinVoiceChannel(Guild guild) {

      vc = guild.getVoiceChannelById(voiceChannelID);

      guild.getAudioManager().openAudioConnection(vc);

      voiceChannelName = vc.getName();

      updateVoiceChannelCount();

    }

    void updateVoiceChannelCount {

      if (vc == null) ret with usersInVoiceChannel.clear();

      L<Member> members = vc.getMembers();

      int n = l(usersInVoiceChannel);

      replaceCollection(usersInVoiceChannel,

        mapNonNulls_pcall(members, m -> {

          User user = m.getUser();

          ret user.isBot() ? null : user.getIdLong();

        }));

      int n2 = l(usersInVoiceChannel);

      if (n != n2) print(guildID + " voice channel count corrected: " + n + " -> " + n2);

    }

    bool shadowStopped() {

      ret enableShadowStop && empty(usersInVoiceChannel);

    }

    class MyAudioSendHandler implements AudioSendHandler {

      long counter = -1;

      byte[] data;

      public bool canProvide() enter {

        inc(canProvideCalls);

        if (!shouldBePlaying) false;

        if (shadowStopped()) {

          counter = -1;

          false;

        }

        synchronized(buffer) {

          if (!buffer.isFull()) false;

          // out of range? go back to middle

          data = buffer.get(counter);

          if (data == null) {

            long oldCounter = counter;

            counter = buffer.getBase()+buffer.size()/2;

            if (oldCounter >= 0) printWithTime("RESETTING " + oldCounter + " => " + counter

              + " (delta=" + (counter-oldCounter) + ")");

            data = buffer.get(counter);

          }

          ++counter;

          true;

        }

      }

      public java.nio.ByteBuffer provide20MsAudio() {

        inc(provideCalls);

        inc(dataSent, l(data));

        java.nio.ByteBuffer buf = java.nio.ByteBuffer.wrap(data);

        ret buf;

      }

      public bool isOpus() { true; }

    }

    // when already in channel

    S startPlaying(Guild guild) {

      AudioManager am = guild.getAudioManager();

      sendHandler = new MyAudioSendHandler;

      am.setSendingHandler(sendHandler);

      ret "Playing radio in channel " + quote(voiceChannelName);

    }

    // try to select the best channel

    // -the one the user is in, or

    // -the one that was used before, or

    // -just any channel.

    // returns error message or null

    S selectAVoiceChannel(Guild guild, Member member) {

      print("selectAVoiceChannel member=" + member);

      if (member != null) {

        GuildVoiceState vs = member.getVoiceState();

        VoiceChannel vc = vs.getChannel();

        print("selectAVoiceChannel vc=" + vc);

        if (vc != null) {

          voiceChannelID = lastVoiceChannelID = vc.getIdLong();

          ret null with change();

        }

      }

      if (voiceChannelID != 0) null;

      L<VoiceChannel> allChannels = guild.getVoiceChannels();

      L<VoiceChannel> channels = filter(allChannels, c -> isJoinableVoiceChannel(guild, c));

      if (empty(channels))

        if (empty(allChannels))

          ret "Please create a voice channel.";

        else

          ret "Sorry, I am not allowed to enter any of your voice channels. Maybe my invite link was wrong?"; // TODO: show better link

      // Check if lastVoiceChannelID still exists

      if (lastVoiceChannelID != 0 && !hasWhereMethodReturns getIdLong(channels, lastVoiceChannelID)) {

        lastVoiceChannelID = 0; change();

      }

      voiceChannelID = lastVoiceChannelID != 0 ? lastVoiceChannelID

        : first(channels).getIdLong();

      change();

      null;

    }

    S action_play(Guild guild, Member member) {

      if (shouldBePlaying && sendHandler != null) ret "I am playing already!";

      try answer selectAVoiceChannel(guild, member);

      joinVoiceChannel(guild);

      shouldBePlaying = true; change();

      ret startPlaying(guild);

    }

    S action_stop(Guild guild) {

      if (shouldBePlaying) {

        shouldBePlaying = false; change();

        ret "OK, radio switched off";

      }

      ret "I am stopped, I think. No?";

    }

    S action_leave(Guild guild) {

      voiceChannelID = 0; change();

      this.vc = null;

      GuildVoiceState state = getSelfMember(guild).getVoiceState();

      VoiceChannel vc = state.getChannel();

      if (vc == null) ret "I don't think I am in any voice channel";

      guild.getAudioManager().closeAudioConnection();

      ret "OK, leaving channel " + quote(vc.getName());

    }

    S action_join(Guild guild, Member member) {

      GuildVoiceState state = getSelfMember(guild).getVoiceState();

      VoiceChannel vc = state.getChannel();

      try answer selectAVoiceChannel(guild, member);

      joinVoiceChannel(guild);

      ret "OK, joined voice channel " + quote(voiceChannelName);

    }

    S action_selectChannel(Guild guild, int i) {

      L<VoiceChannel> channels = guild.getVoiceChannels();

      channels = filter(channels, c -> isJoinableVoiceChannel(guild, c));

      VoiceChannel vc = _get(channels, i-1);

      if (vc == null) ret "Sorry, I count only " + nChannels(channels);

      voiceChannelID = lastVoiceChannelID = vc.getIdLong();

      change();

      joinVoiceChannel(guild);

      ret "OK, joined voice channel " + quote(voiceChannelName);

    }

    S renderChannelListIfNotOne(Guild guild) {

      if (guild == null) ret "";

      L<VoiceChannel> channels = guild.getVoiceChannels();

      channels = filter(channels, c -> isJoinableVoiceChannel(guild, c));

      if (empty(channels)) ret "\nNote: You don't have any voice channels.";

      if (l(channels) == 1) ret "";

      new LS out;

      for i over channels:

        out.add("`@me join channel " + (i+1) + "` - join channel " + quote(channels.get(i).getName()));

      ret "\n" + lines_rtrim(out);

    }

    bool isJoinableVoiceChannel(Guild guild, VoiceChannel vc) {

      if (vc == null || guild == null) false;

      try {

        ret guild.getSelfMember().hasPermission(vc, Permission.VOICE_CONNECT);

      } catch print e { ret false; }

    }

    // normal restart (on bot load)

    void restart(Guild guild) {

      if (guild == null) ret; // no longer in guild

      if (shouldBePlaying) {

        print("RESTARTING RADIO in " + guild);

        print(action_play(guild, null));

      } else if (voiceChannelID != 0) {

        print("Rejoining voice channel in " + guild);

        print(action_join(guild, null));

      }

    }

    // restart with stop (after stream interruption) - no longer needed

    /*void hardRestart(Guild guild) {

      restart(guild);

    }*/

    void postSong {     

      if (songChannelID == 0) ret;

      postInChannel(songChannelID, npMsg.replace("<track>", backtickQuote(currentSong)));

      if (isWebURL(coverArtURL)) {

        S imageURL = appendQueryToURL(coverArtURL, rand := randomInt());

        if (uploadImagesAsFiles)

          uploadFileInChannel(songChannelID, loadBinaryPage(imageURL), "cover-art.jpg", "", null);

        else

          postImage(getChannel(songChannelID), imageURL, "");

      }

    }

    void handleUserJoined(long userID, VoiceChannel joined) {

      if (joined != null && joined.getIdLong() == voiceChannelID) {

        usersInVoiceChannel.add(userID);

        print(guildID + " adding user to voice channel: " + userID + " (n=" + l(usersInVoiceChannel));

      }

    }

    void handleVoiceUpdateEvent(GenericGuildVoiceEvent e) {

      User user = ((GenericGuildVoiceEvent) e).getMember().getUser();

      if (user.isBot()) ret;

      long userID = user.getIdLong();

      if (e cast GuildVoiceUpdateEvent) {

        VoiceChannel left = e.getChannelLeft();

        if (e.getChannelLeft().getIdLong() == voiceChannelID) {

          usersInVoiceChannel.remove(userID);

          print(guildID + " removed user from voice channel: " + userID + " (n=" + l(usersInVoiceChannel));

        }

      }

      if (e cast GuildVoiceMoveEvent)

        handleUserJoined(userID, e.getChannelJoined());

      if (e cast GuildVoiceJoinEvent)

        handleUserJoined(userID, e.getChannelJoined());

    }

  } // end of ByServer

  /*void restartRadios {

    L<Guild> guilds = discord.getGuilds();

    for (Guild guild : guilds) pcall {

      ByServer bs = getByServer(guild);

      if (bs != null)

        bs.hardRestart(guild);

    }

  }*/

  S dmOwners(S msg) {

    L<Guild> guilds = discord.getGuilds();

    int n = 0;

    for (Guild guild : guilds) pcall {

      ByServer bs = getByServer(guild.getIdLong(), true);

      if (bs != null && bs.shouldBePlaying) {

        gazelle_dmGuildOwner(guild, msg);

        ++n;

      }

    }

    ret n2(n, "guild owner") + " contacted.";

  }

  void loadTrack {

    if (!isURL(radioURL)) ret;

    lavaPlayer_loadItem(module(), lavaPlayer_playerManager(), player, radioURL.replace("<RNDINT>", str(randomInt())));

  }

  S currentSong() {

    temp tempSetTL(loadPage_sizeLimit, 128*1024L);

    if (l(currentSongURL) <= 1) ret "";

    if (cic(currentSongURL, "autopo.st/"))

      ret trackTitleFromAutoPostWidget(loadPageWithTimeout(currentSongURL, 10.0));

    if (cic(currentSongURL, "caster.fm/"))

      ret (S) mapGet(jsonDecodeMap(loadPageWithHeaders(currentSongURL,

        "X-Requested-With", "XMLHttpRequest")), "playing");

    if (endsWith(currentSongURL, "status.xsl"))

      ret trackTitleFromIceCastStatusXSL(loadPageWithTimeout(currentSongURL, 10.0));

    ret loadPageWithTimeout(currentSongURL, 10.0);

  }

  void grabSong enter {

    if (discord == null) ret;

    S song = currentSong();

    bool post = nempty(currentSong) && nempty(song) && neq(currentSong, song);

    currentSong = song;

    if (post)

      postSong_allServers();

    if (putSongInStatus) {

      S s = currentSong;

      if (elapsedSeconds(lastActualFrameReceived) >= considerDownInterval && elapsedSeconds(moduleStarted) >= considerDownInterval)

        s = "Stream currently down";

      if (nempty(s))

        gazelle_discord_playingGame(s);

    }

  }

  void postSong_allServers {

    L<Guild> guilds = discord.getGuilds();

    for (Guild guild : guilds) pcall {

      ByServer bs = getByServer(guild);

      if (bs != null)

        bs.postSong();

    }

  }

  void updateVoiceChannelCount_allServers {

    if (discord == null) ret;

    for (ByServer bs : cloneValues(dataByServer))

      bs.updateVoiceChannelCount();

  }

  int listeningUsers() {

    int n = 0;

    for (Guild guild : discord.getGuilds()) {

      ByServer bs = getByServer(guild.getIdLong(), true);

      if (bs != null && bs.shouldBePlaying)

        n += l(bs.usersInVoiceChannel);

    }

    ret n;

  }

  S listeningUsers_full() {

    new LS out;

    for (Guild guild : discord.getGuilds()) {

      ByServer bs = getByServer(guild.getIdLong(), true);

      if (bs != null && bs.shouldBePlaying) {

        L<Long> users = cloneList(bs.usersInVoiceChannel);

        if (empty(users)) continue;

        out.add(guild.getName() + ": playing to " + joinWithComma(map(users,

          id -> or2(discord_memberIDToEffectiveName(guild, id), str(id)))));

      }

    }

    ret lines(out);

  }

}