From ca662b4de82d71bf8931e277544465cb3b66062c Mon Sep 17 00:00:00 2001
From: Synbulat Biishev <syjalo.dev@gmail.com>
Date: Fri, 25 Nov 2022 20:36:34 +0300
Subject: [PATCH] feat: add `Message#bulkDeletable` (v13) (#8761)

---
 src/structures/Message.js                     | 21 ++++++++++++++++++-
 src/structures/interfaces/TextBasedChannel.js |  4 ++--
 src/util/Constants.js                         |  7 +++++++
 typings/index.d.ts                            |  2 ++
 4 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/src/structures/Message.js b/src/structures/Message.js
index d0146c3b5..fd18ec6b1 100644
--- a/src/structures/Message.js
+++ b/src/structures/Message.js
@@ -14,7 +14,7 @@ const ReactionCollector = require('./ReactionCollector');
 const { Sticker } = require('./Sticker');
 const { Error } = require('../errors');
 const ReactionManager = require('../managers/ReactionManager');
-const { InteractionTypes, MessageTypes, SystemMessageTypes } = require('../util/Constants');
+const { InteractionTypes, MessageTypes, SystemMessageTypes, MaxBulkDeletableMessageAge } = require('../util/Constants');
 const MessageFlags = require('../util/MessageFlags');
 const Permissions = require('../util/Permissions');
 const SnowflakeUtil = require('../util/SnowflakeUtil');
@@ -625,6 +625,25 @@ class Message extends Base {
     );
   }
 
+  /**
+   * Whether the message is bulk deletable by the client user
+   * @type {boolean}
+   * @readonly
+   * @example
+   * // Filter for bulk deletable messages
+   * channel.bulkDelete(messages.filter(message => message.bulkDeletable));
+   */
+  get bulkDeletable() {
+    const permissions = this.channel?.permissionsFor(this.client.user);
+    return (
+      (this.inGuild() &&
+        Date.now() - this.createdTimestamp < MaxBulkDeletableMessageAge &&
+        this.deletable &&
+        permissions?.has(Permissions.FLAGS.MANAGE_MESSAGES, false)) ??
+      false
+    );
+  }
+
   /**
    * Whether the message is pinnable by the client user
    * @type {boolean}
diff --git a/src/structures/interfaces/TextBasedChannel.js b/src/structures/interfaces/TextBasedChannel.js
index b1397c159..bed289cad 100644
--- a/src/structures/interfaces/TextBasedChannel.js
+++ b/src/structures/interfaces/TextBasedChannel.js
@@ -5,7 +5,7 @@ const MessageCollector = require('../MessageCollector');
 const MessagePayload = require('../MessagePayload');
 const SnowflakeUtil = require('../../util/SnowflakeUtil');
 const { Collection } = require('@discordjs/collection');
-const { InteractionTypes } = require('../../util/Constants');
+const { InteractionTypes, MaxBulkDeletableMessageAge } = require('../../util/Constants');
 const { TypeError, Error } = require('../../errors');
 const InteractionCollector = require('../InteractionCollector');
 
@@ -295,7 +295,7 @@ class TextBasedChannel {
     if (Array.isArray(messages) || messages instanceof Collection) {
       let messageIds = messages instanceof Collection ? [...messages.keys()] : messages.map(m => m.id ?? m);
       if (filterOld) {
-        messageIds = messageIds.filter(id => Date.now() - SnowflakeUtil.timestampFrom(id) < 1_209_600_000);
+        messageIds = messageIds.filter(id => Date.now() - SnowflakeUtil.timestampFrom(id) < MaxBulkDeletableMessageAge);
       }
       if (messageIds.length === 0) return new Collection();
       if (messageIds.length === 1) {
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 6988c1ffa..7db258bab 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -4,6 +4,12 @@ const process = require('node:process');
 const Package = (exports.Package = require('../../package.json'));
 const { Error, RangeError, TypeError } = require('../errors');
 
+/**
+ * Max bulk deletable message age
+ * @typedef {number} MaxBulkDeletableMessageAge
+ */
+exports.MaxBulkDeletableMessageAge = 1_209_600_000;
+
 exports.UserAgent = `DiscordBot (${Package.homepage}, ${Package.version}) Node.js/${process.version}`;
 
 /**
@@ -1443,6 +1449,7 @@ function createEnum(keys) {
  * @property {SweeperKey[]} SweeperKeys The name of an item to be swept in Sweepers.
  * @property {SystemMessageType[]} SystemMessageTypes The types of messages that are `System`.
  * @property {Object<TextInputStyle, number>} TextInputStyles The style of a text input component.
+ * @property {number} MaxBulkDeletableMessageAge Max bulk deletable message age
  * @property {string} UserAgent The user agent used for requests.
  * @property {Object<VerificationLevel, number>} VerificationLevels
  * The value set for the verification levels for a guild.
diff --git a/typings/index.d.ts b/typings/index.d.ts
index 43f2bd7c4..caf37f40a 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -1555,6 +1555,7 @@ export class Message<Cached extends boolean = boolean> extends Base {
   public applicationId: Snowflake | null;
   public attachments: Collection<Snowflake, MessageAttachment>;
   public author: User;
+  public get bulkDeletable(): boolean;
   public readonly channel: If<Cached, GuildTextBasedChannel, TextBasedChannel>;
   public channelId: Snowflake;
   public readonly cleanContent: string;
@@ -2930,6 +2931,7 @@ export const Constants: {
     devDependencies: Record<string, string>;
     [key: string]: unknown;
   };
+  MaxBulkDeletableMessageAge: 1_209_600_000;
   UserAgent: string;
   Endpoints: {
     botGateway: string;