kiafumi/src/main/java/moe/oko/Kiafumi/listener/SkynetListener.java

package moe.oko.Kiafumi.listener;

import moe.oko.Kiafumi.Kiafumi;
import moe.oko.Kiafumi.util.EmbedUI;
import net.dv8tion.jda.api.EmbedBuilder;
import net.dv8tion.jda.api.entities.TextChannel;
import net.dv8tion.jda.api.events.guild.member.GuildMemberJoinEvent;
import net.dv8tion.jda.api.events.guild.member.GuildMemberRemoveEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import org.jetbrains.annotations.NotNull;

import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;

import static moe.oko.Kiafumi.Kiafumi.error;
import static moe.oko.Kiafumi.Kiafumi.debug;
import static moe.oko.Kiafumi.Kiafumi.info;

public class SkynetListener extends ListenerAdapter {
    @Override
    public void onGuildMemberJoin(@NotNull GuildMemberJoinEvent event) {
        var server = Kiafumi.instance.getServerManager().getOrCreateServer(event.getGuild());
        if(server.getJoinRole() != null) {
            try {
                event.getGuild().addRoleToMember(event.getMember(), event.getGuild().getRoleById(server.getJoinRole())).queue();
            } catch(Exception ex) {
                error("Failed to apply welcome role to " + event.getMember().getEffectiveName() + ", as the role does not exist.");
            }
        }
        if(server.isWelcomeEnabled()) {
            info("User [" + event.getUser().getName() + ":" + event.getUser().getId() + "] joined guild [" + event.getGuild().getName() + ':' + event.getGuild().getId() + "].");
            // Fetch the welcome channel from settings.
            TextChannel textChannel;
            try {
                textChannel = event.getGuild().getTextChannelById(server.getWelcomeChannel());
            } catch (Exception ex) {
                error("Failed to send join message to guild " + event.getGuild().getId() + " as the welcome channel was not found.");
                return;
            }
            var dTF = DateTimeFormatter.ofPattern("MM-dd-yyyy");
            // Prepare embed.
            var embedBuilder = new EmbedBuilder()
                    .setColor(EmbedUI.SUCCESS)
                    .setAuthor(event.getMember().getEffectiveName() + "#" + event.getMember().getUser().getDiscriminator() + " ("
                            + event.getMember().getId() + ")", null, event.getUser().getAvatarUrl()).setFooter("User Joined").setTimestamp(OffsetDateTime.now())
                    .setDescription(event.getMember().getAsMention() + " | **Joined Discord**: " + event.getMember().getTimeCreated().format(dTF));
            textChannel.sendMessageEmbeds(embedBuilder.build()).queue();
            debug("Guild join message successfully sent.");
        }
    }

    @Override
    public void onGuildMemberRemove(@NotNull GuildMemberRemoveEvent event) {
        info("User [" + event.getUser().getName() + ":" + event.getUser().getId() + "] left guild [" + event.getGuild().getName() + ':' + event.getGuild().getId() + "].");
        var server = Kiafumi.instance.getServerManager().getOrCreateServer(event.getGuild());
        if(server.isWelcomeEnabled()) {
            // Fetch the welcome channel from settings.
            TextChannel textChannel;
            try {
                textChannel = event.getGuild().getTextChannelById(server.getWelcomeChannel());
            } catch (Exception ex) {
                error("Failed to send leave message to guild " + event.getGuild().getId() + " as the welcome channel was not found.");
                return;
            }
            // Prepare embed.
            var dTF = DateTimeFormatter.ofPattern("MM-dd-yyyy");
            var embedBuilder = new EmbedBuilder()
                    .setColor(EmbedUI.FAILURE)
                    .setAuthor(event.getMember().getEffectiveName() + "#" + event.getMember().getUser().getDiscriminator() + " ("
                            + event.getMember().getId() + ")", null, event.getUser().getAvatarUrl()).setFooter("User Left").setTimestamp(OffsetDateTime.now())
                    .setDescription(event.getMember().getAsMention() + " | **Joined Server**: " + event.getMember().getTimeJoined().format(dTF));
            textChannel.sendMessageEmbeds(embedBuilder.build()).queue();
            debug("Guild leave message successfully sent.");
        }
    }
}