feat(arabot): add listener for bans not done via bot

src/listeners/ban/ban.ts

@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+/*
+    Animal Rights Advocates Discord Bot
+    Copyright (C) 2022  Anthony Berg
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { Listener } from '@sapphire/framework';
+import type { GuildBan } from 'discord.js';
+import { AuditLogEvent, EmbedBuilder, TextChannel } from 'discord.js';
+import { addBan, checkActive } from '#utils/database/ban';
+import IDs from '#utils/ids';
+import { addEmptyUser, addExistingUser, userExists } from '#utils/database/dbExistingUser';
+
+export class BanListener extends Listener {
+  public constructor(context: Listener.Context, options: Listener.Options) {
+    super(context, {
+      ...options,
+      event: 'guildBanAdd',
+    });
+  }
+
+  public async run(ban: GuildBan) {
+    if (await checkActive(ban.user.id)) {
+      return;
+    }
+
+    // Get the audit logs for the ban
+    const logs = await ban.guild.fetchAuditLogs({
+      limit: 1,
+      type: AuditLogEvent.MemberBanAdd,
+    });
+
+    const banLog = logs.entries.first();
+
+    if (banLog === undefined) {
+      this.container.logger.error('BanListener: banLog is undefined.');
+      return;
+    }
+
+    const { executor, target } = banLog;
+
+    if (ban.user !== target) {
+      this.container.logger.error('BanListener: ban.user !== target.');
+      return;
+    }
+
+    if (executor === null) {
+      this.container.logger.error('BanListener: mod not found.');
+      return;
+    }
+
+    if (this.container.client.user === null) {
+      this.container.logger.error('BanListener: client.user is null.');
+      return;
+    }
+
+    // Check if the bot banned the user
+    if (executor.id === this.container.client.user.id) {
+      this.container.logger.error('BanListener: got past the checkActive and bot banned this user.');
+      return;
+    }
+
+    const { user } = ban;
+    const { guild } = ban;
+
+    // Gets mod's GuildMember
+    let mod = guild.members.cache.get(executor.id);
+
+    // Checks if GuildMember is null
+    if (mod === undefined) {
+      mod = await guild.members.fetch(executor.id)
+        .catch(() => undefined);
+      if (mod === undefined) {
+        this.container.logger.error('UnbanListener: Could not fetch moderator.');
+        return;
+      }
+    }
+
+    // Check if mod is in database
+    if (!await userExists(mod.id)) {
+      await addExistingUser(mod);
+    }
+
+    if (await checkActive(user.id)) {
+      this.container.logger.error('BanListener: got past the checkActive at the start.');
+      return;
+    }
+
+    // Check if user and mod are on the database
+    if (!await userExists(user.id)) {
+      await addEmptyUser(user.id);
+    }
+
+    let { reason } = banLog;
+
+    if (reason === null) {
+      reason = 'Was banned without using the bot, reason was not given';
+    }
+
+    // Add missing ban
+    await addBan(user.id, mod.id, `${reason}`);
+
+    // Log the ban
+    let logChannel = guild.channels.cache
+      .get(IDs.channels.logs.restricted) as TextChannel | undefined;
+
+    if (logChannel === undefined) {
+      logChannel = await guild.channels
+        .fetch(IDs.channels.logs.restricted) as TextChannel | undefined;
+      if (logChannel === undefined) {
+        this.container.logger.error('BanListener: Could not fetch log channel');
+        return;
+      }
+    }
+
+    const log = new EmbedBuilder()
+      .setColor('#FF0000')
+      .setAuthor({ name: `Banned ${user.tag} (not done via bot)`, iconURL: `${user.avatarURL()}` })
+      .addFields(
+        { name: 'User', value: `${user}`, inline: true },
+        { name: 'Moderator', value: `${mod}`, inline: true },
+        { name: 'Reason', value: reason },
+      )
+      .setTimestamp()
+      .setFooter({ text: `ID: ${user.id}` });
+
+    await logChannel.send({ embeds: [log] });
+  }
+}