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Simple GiveawayBot using JDA
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package giveawaybot;
import java.io.File;
import java.util.LinkedList;
import java.util.List;
import javax.security.auth.login.LoginException;
import net.dv8tion.jda.core.AccountType;
import net.dv8tion.jda.core.JDABuilder;
import net.dv8tion.jda.core.Permission;
import net.dv8tion.jda.core.entities.Icon;
import net.dv8tion.jda.core.entities.Message;
import net.dv8tion.jda.core.entities.User;
import net.dv8tion.jda.core.events.message.guild.GuildMessageReceivedEvent;
import net.dv8tion.jda.core.exceptions.RateLimitedException;
import net.dv8tion.jda.core.hooks.ListenerAdapter;
import net.dv8tion.jda.core.utils.PermissionUtil;
/**
*
* @author John Grosh (john.a.grosh@gmail.com)
*/
public class GiveawayBot extends ListenerAdapter {
@Override
public void onGuildMessageReceived(GuildMessageReceivedEvent event) {
if(event.getMessage().getRawContent().equals("!ghelp"))
{
event.getChannel().sendMessage("<:yay:294906617378504704> GiveawayBot help: <:yay:294906617378504704>\n"
+ "`!ghelp` - this message\n"
+ "`!gstart <seconds> [item]` - starts a giveway. Ex: `!gstart 180` for a 3 minute giveaway\n"
+ "`!greroll <messageid>` - rerolls a winner for the giveaway on the provided message\n\n"
+ "Commands require Manage Server permission to use\n"
+ "Don't include <> nor []; <> means required, [] means optional").queue();
}
else if(event.getMessage().getRawContent().startsWith("!gstart"))
{
if(!PermissionUtil.checkPermission(event.getGuild(), event.getMember(), Permission.MANAGE_SERVER))
{
event.getChannel().sendMessage("You must have Manage Server perms to use this!").queue();
return;
}
String str = event.getMessage().getRawContent().substring(7).trim();
String[] parts = str.split("\\s+",2);
try{
int sec = Integer.parseInt(parts[0]);
event.getChannel().sendMessage("<:yay:294906617378504704> **GIVEAWAY!** <:yay:294906617378504704>\n"+(parts.length>1 ? "\u25AB*`"+parts[1]+"`*\u25AB\n" : "")+"React with \uD83C\uDF89 to enter!").queue(m -> {
m.addReaction("\uD83C\uDF89").queue();
new Giveaway(sec,m,parts.length>1 ? parts[1] : null).start();
});
event.getMessage().delete().queue();
} catch(NumberFormatException ex)
{
event.getChannel().sendMessage("Could not parse seconds from `"+parts[0]+"`").queue();
}
}
else if(event.getMessage().getRawContent().startsWith("!greroll"))
{
if(!PermissionUtil.checkPermission(event.getGuild(), event.getMember(), Permission.MANAGE_SERVER))
{
event.getChannel().sendMessage("You must have Manage Server perms to use this!").queue();
return;
}
String id = event.getMessage().getRawContent().substring(8).trim();
if(!id.matches("\\d{17,22}"))
{
event.getChannel().sendMessage("Invalid message id").queue();
return;
}
Message m = event.getChannel().getMessageById(id).complete();
if(m==null)
{
event.getChannel().sendMessage("Message not found!").queue();
return;
}
m.getReactions()
.stream().filter(mr -> mr.getEmote().getName().equals("\uD83C\uDF89"))
.findAny().ifPresent(mr -> {
List<User> users = new LinkedList<>(mr.getUsers().complete());
users.remove(m.getJDA().getSelfUser());
String uid = users.get((int)(Math.random()*users.size())).getId();
event.getChannel().sendMessage("Congratulations to <@"+uid+">! You won the reroll!").queue();
});
}
else if(event.getAuthor().getId().equals("OWNERID"))
{
if(event.getMessage().getRawContent().startsWith("!say"))
event.getChannel().sendMessage(event.getMessage().getRawContent().substring(4).trim()).queue();
else if(event.getMessage().getRawContent().startsWith("!ava"))
{
String loc = event.getMessage().getRawContent().substring(4).trim();
try{
event.getJDA().getSelfUser().getManager().setAvatar(Icon.from(new File(loc))).complete();
event.getChannel().sendMessage("Updated!").queue();
}catch(Exception ex){
event.getChannel().sendMessage("Error: "+ex).queue();
}
}
}
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws LoginException, IllegalArgumentException, RateLimitedException {
new JDABuilder(AccountType.BOT).setToken("REDACTED")
.addListener(new GiveawayBot())
.buildAsync();
}
public class Giveaway {
int seconds;
Message message;
String item;
public Giveaway(int time, Message message, String item)
{
seconds = time;
this.message = message;
this.item = item;
}
public void start()
{
new Thread(){
@Override
public void run() {
while(seconds>5)
{
message.editMessage("<:yay:294906617378504704> **GIVEAWAY!** <:yay:294906617378504704>\n"+(item!=null ? "\u25AB*`"+item+"`*\u25AB\n" : "")+"React with \uD83C\uDF89 to enter!\nTime remaining: "+secondsToTime(seconds)).queue();
seconds-=5;
try{Thread.sleep(5000);}catch(Exception e){}
}
while(seconds>0)
{
message.editMessage("<:yay:294906617378504704> **G I V E A W A Y!** <:yay:294906617378504704>\nLAST CHANCE TO ENTER!!!\n"+(item!=null ? "\u25AB*`"+item+"`*\u25AB\n" : "")+"React with \uD83C\uDF89 to enter!\nTime remaining: "+secondsToTime(seconds)).queue();
seconds--;
try{Thread.sleep(1000);}catch(Exception e){}
}
message.getChannel().getMessageById(message.getId()).complete().getReactions()
.stream().filter(mr -> mr.getEmote().getName().equals("\uD83C\uDF89"))
.findAny().ifPresent(mr -> {
List<User> users = new LinkedList<>(mr.getUsers().complete());
users.remove(message.getJDA().getSelfUser());
String id = users.get((int)(Math.random()*users.size())).getId();
message.editMessage("<:yay:294906617378504704> **GIVEAWAY ENDED!** <:yay:294906617378504704>\n"+(item!=null ? "\u25AB*`"+item+"`*\u25AB\n" : "")+"\nWinner: <@"+id+"> \uD83C\uDF89").queue();
message.getChannel().sendMessage("Congratulations to <@"+id+">! You won"+(item==null ? "" : " the "+item)+"!").queue();
});
}
}.start();
}
}
public static String secondsToTime(long timeseconds)
{
StringBuilder builder = new StringBuilder();
int years = (int)(timeseconds / (60*60*24*365));
if(years>0)
{
builder.append("**").append(years).append("** years, ");
timeseconds = timeseconds % (60*60*24*365);
}
int weeks = (int)(timeseconds / (60*60*24*365));
if(weeks>0)
{
builder.append("**").append(weeks).append("** weeks, ");
timeseconds = timeseconds % (60*60*24*7);
}
int days = (int)(timeseconds / (60*60*24));
if(days>0)
{
builder.append("**").append(days).append("** days, ");
timeseconds = timeseconds % (60*60*24);
}
int hours = (int)(timeseconds / (60*60));
if(hours>0)
{
builder.append("**").append(hours).append("** hours, ");
timeseconds = timeseconds % (60*60);
}
int minutes = (int)(timeseconds / (60));
if(minutes>0)
{
builder.append("**").append(minutes).append("** minutes, ");
timeseconds = timeseconds % (60);
}
if(timeseconds>0)
builder.append("**").append(timeseconds).append("** seconds");
String str = builder.toString();
if(str.endsWith(", "))
str = str.substring(0,str.length()-2);
if(str.equals(""))
str="**No time**";
return str;
}
}
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