!7

!include once #1026298 // DynTalkBot2 for JDA 4.0

module GreeterBot extends DynTalkBot2<GreeterBot.ByServer> {

  long greetingsPerformed;

  void init {

    super.init();

    makeByServer = () -> new ByServer;

    useAGIBlueForDropPunctuation = false;

    preprocessAtSelfToMyName = true;

    dropPunctuation = false;

    dm_vmBus_onMessage_q discordGuildLeave(voidfunc(Map map) {

      ret unless map.get('module) == module();

      O event = map.get('event);

      O user = rcall getUser(event);

      S name = cast rcall getName(user);

      long guildID = discord_guildIDFromEvent_gen(event);

      if (guildID == 0) fail("Guild zero: " + map);

      getByServer(guildID, true).onUserLeave(name, map);

    });

  }

  class ByServer extends DynTalkBot2.ByServer {

    bool enabled = true;

    S msg = "Welcome <user>!";

    S goodbyeMsg = "<user> just left us";

    long channelToGreetIn;

    int delay = 2; // seconds before posting greeting

    void onUserJoin(long userID, O... _) {

      S msg = replace(this.msg, "<user>", discordAt(userID));

      if (channelToGreetIn == 0) setField(channelToGreetIn := preferredChannelID);

      if (channelToGreetIn == 0) fail("Have no greeting channel"); 

      if (!boolPar noDelay(_)) sleepSeconds(delay);

      postInChannel(channelToGreetIn, msg);

    }

    void onUserLeave(S userName, O... _) {

      postInChannel(channelToGreetIn, replace(goodbyeMsg, "<user>", or2(userName, "an unknown user"));

    }

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

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

      new Matches m;

      S sOld = s;

      s = dropPrefixOrNull(myPrefix(), s);

      if (s == null) {

        print("no got prefix: " + quote(myPrefix()) + " / " + quote(sOld));

        null;

      }

      if (eqic(s, "prefer this channel")) {

        try answer checkAuth(_);

        long channelID = longPar channelID(_);

        if (channelID == 0) ret "No channel";

        setField(channelToGreetIn := channelID);

        ret "OK, will greet here from now on.";

      }

      if (eqic(s, "simulate greeting")) {

        print("userID=" + longPar userID(_));

        onUserJoin(longPar userID(_), paramsPlus(_, noDelay := true));

        ret "Greeting simulated";

      }

      if (eqic(s, "simulate goodbye")) {

        O user = rcall getAuthor(optPar event(_));

        S name = cast rcall getName(user);

        onUserLeave(name, _);

        ret "Goodbye simulated";

      }

      if (eqic(s, "get message")) ret msg;

      if (eqic(s, "get goodbye message")) ret goodbyeMsg;

      if (eqic(s, "get delay")) ret "Current greeting delay is: " + nSeconds(delay);

      if (swic(s, "set delay ", m)) {

        int i = parseFirstInt(m.rest());

        setField(delay := clamp(i, 0, 60));

        ret "Greeting delay set to " + nSeconds(delay);

      }

      if (swic_trim(s, "set message:", m)) {

        try answer checkAuth(_);

        setField(msg := dropPrefixTrim("Message changed to:", m.rest()));

        ret "Message changed to: " + msg;

      }

      if (swic_trim(s, "set goodbye message:", m)) {

        try answer checkAuth(_);

        setField(goodbyeMsg := m.rest();

        ret "Goodbye message changed to: " + msg;

      }

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

        try answer checkAuth(_);

        setField(enabled := true);

        ret "Enabled. Will greet every new arrival!";

      }

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

        try answer checkAuth(_);

        setField(enabled := true);

        ret "Disabled. Will not greet anyone.";

      }

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

        ret trim([[

Advanced commands:

@me **get delay** -- get delay before posting greeting

@me **set delay to 5 seconds** -- change greeting delay

]]).replace("@me", atSelf());

      if (eqic(s, "help"))

        ret trim([[

I am a simple greeter (and farewell) bot. Status: ]] + enabledDisabled(enabled) + [[. Commands:

@me **simulate greeting** -- I greet you so you can test me

@me **get message** -- show current greeting message

@me **set message: Hello <user>! Bla bla...** -- change greeting. <user> is replaced with user name

@me **simulate goodbye** -- I pretend you walked away (although I know you didn't)

@me **get goodbye message** -- show current goodbye message (what I post when people leave)

@me **set goodbye message: <user> just left us** -- change farewell message

@me **prefer this channel** -- posts greetings in the channel you write this in

@me **enable/disable** -- enable/disable the auto-greeting

@me **masters**/**add master**/**delete master** -- change bot ownership

@me **source**/**support channel** -- see sources or join the support discord

@me **advanced help** -- see advanced help

[Bot made by https://BotCompany.de]

  ]]).replace("@me", atSelf());

      null;

    }

  }

}