6 files changed, 223 insertions, 10 deletions
diff --git a/src/commands/utilities/remind.ts b/src/commands/utilities/remind.ts
new file mode 100644
index 0000000..8df24c1
--- /dev/null
+++ b/src/commands/utilities/remind.ts
@@ -0,0 +1,59 @@
+import { ArgType, BushCommand, Reminder, type BushMessage, type BushSlashMessage } from '#lib';
+
+export default class RemindCommand extends BushCommand {
+	public constructor() {
+		super('remind', {
+			aliases: ['remind', 'remindme', 'reminder'],
+			category: 'utilities',
+			description: 'Create reminders that will be DMed to you when the time expires.',
+			usage: ['remind <duration> <reason>'],
+			examples: ['template 1 2'],
+			args: [
+				{
+					id: 'reason_and_duration',
+					type: 'contentWithDuration',
+					match: 'rest',
+					description: 'The reason to be reminded and the duration to remind the user in.',
+					prompt: 'What would you like to be reminded about and when?',
+					retry: '{error} Choose a reason to be reminded about with a duration for when to be notified.',
+					optional: true,
+					slashType: 'STRING'
+				}
+			],
+			slash: true,
+			clientPermissions: (m) => util.clientSendAndPermCheck(m),
+			userPermissions: []
+		});
+	}
+
+	public override async exec(
+		message: BushMessage | BushSlashMessage,
+		args: { reason_and_duration: ArgType<'contentWithDuration'> | string }
+	) {
+		const { duration, contentWithoutTime: reason } =
+			typeof args.reason_and_duration === 'string'
+				? await util.arg.cast('contentWithDuration', message, args.reason_and_duration)
+				: args.reason_and_duration;
+
+		if (!reason?.trim()) return await message.util.reply(`${util.emojis.error} Please enter a reason to be reminded about.`);
+		if (!duration) return await message.util.reply(`${util.emojis.error} Please enter a duration.`);
+
+		if (duration < 30_000)
+			return await message.util.reply(`${util.emojis.error} You cannot pick a duration less than 30 seconds.`);
+
+		const created = new Date();
+		const expires = new Date(Date.now() + duration);
+		const delta = util.format.bold(util.dateDelta(expires));
+
+		const success = await Reminder.create({
+			content: reason.trim(),
+			messageUrl: message.url!,
+			user: message.author.id,
+			created,
+			expires
+		}).catch(() => false);
+
+		if (!success) return await message.util.reply(`${util.emojis.error} Could not create a reminder.`);
+		return await message.util.reply(`${util.emojis.success} I will remind you in ${delta} (${util.timestamp(expires, 'T')}).`);
+	}
+}
diff --git a/src/commands/utilities/reminders.ts b/src/commands/utilities/reminders.ts
new file mode 100644
index 0000000..7180aa9
--- /dev/null
+++ b/src/commands/utilities/reminders.ts
@@ -0,0 +1,33 @@
+import { BushCommand, ButtonPaginator, Reminder, type BushMessage, type BushSlashMessage } from '#lib';
+import { MessageEmbedOptions } from 'discord.js';
+import { Op } from 'sequelize';
+
+export default class RemindersCommand extends BushCommand {
+	public constructor() {
+		super('reminders', {
+			aliases: ['reminders', 'view-reminders', 'list-reminders'],
+			category: 'utilities',
+			description: 'List all your current reminders.',
+			usage: ['reminder'],
+			examples: ['reminders'],
+			slash: true,
+			clientPermissions: (m) => util.clientSendAndPermCheck(m, 'EMBED_LINKS'),
+			userPermissions: []
+		});
+	}
+
+	public override async exec(message: BushMessage | BushSlashMessage) {
+		const reminders = await Reminder.findAll({ where: { user: message.author.id, expires: { [Op.gt]: new Date() } } });
+		if (!reminders.length) return message.util.send(`${util.emojis.error} You don't have any reminders set.`);
+
+		const formattedReminders = reminders.map((reminder) => `${util.timestamp(reminder.expires, 't')} - ${reminder.content}`);
+
+		const chunked = util.chunk(formattedReminders, 15);
+		const embeds: MessageEmbedOptions[] = chunked.map((chunk) => ({
+			title: `Reminders`,
+			description: chunk.join('\n'),
+			color: util.colors.default
+		}));
+		return await ButtonPaginator.send(message, embeds);
+	}
+}
diff --git a/src/lib/extensions/discord-akairo/BushClient.ts b/src/lib/extensions/discord-akairo/BushClient.ts
index 41ecfaf..7321c17 100644
--- a/src/lib/extensions/discord-akairo/BushClient.ts
+++ b/src/lib/extensions/discord-akairo/BushClient.ts
@@ -1,3 +1,15 @@
+import {
+	abbreviatedNumber,
+	contentWithDuration,
+	discordEmoji,
+	duration,
+	durationSeconds,
+	globalUser,
+	messageLink,
+	permission,
+	roleWithDuration,
+	snowflake
+} from '#args';
 import type {
 	BushApplicationCommand,
 	BushBaseGuildEmojiManager,
@@ -35,16 +47,6 @@ import path from 'path';
 import readline from 'readline';
 import type { Sequelize as SequelizeType } from 'sequelize';
 import { fileURLToPath } from 'url';
-import { abbreviatedNumber } from '../../../arguments/abbreviatedNumber.js';
-import { contentWithDuration } from '../../../arguments/contentWithDuration.js';
-import { discordEmoji } from '../../../arguments/discordEmoji.js';
-import { duration } from '../../../arguments/duration.js';
-import { durationSeconds } from '../../../arguments/durationSeconds.js';
-import { globalUser } from '../../../arguments/globalUser.js';
-import { messageLink } from '../../../arguments/messageLink.js';
-import { permission } from '../../../arguments/permission.js';
-import { roleWithDuration } from '../../../arguments/roleWithDuration.js';
-import { snowflake } from '../../../arguments/snowflake.js';
 import UpdateCacheTask from '../../../tasks/updateCache.js';
 import UpdateStatsTask from '../../../tasks/updateStats.js';
 import { ActivePunishment } from '../../models/ActivePunishment.js';
@@ -52,6 +54,7 @@ import { Global } from '../../models/Global.js';
 import { Guild as GuildModel } from '../../models/Guild.js';
 import { Level } from '../../models/Level.js';
 import { ModLog } from '../../models/ModLog.js';
+import { Reminder } from '../../models/Reminder.js';
 import { Stat } from '../../models/Stat.js';
 import { StickyRole } from '../../models/StickyRole.js';
 import { AllowedMentions } from '../../utils/AllowedMentions.js';
@@ -425,6 +428,7 @@ export class BushClient<Ready extends boolean = boolean> extends AkairoClient<Re
 			Level.initModel(this.db);
 			StickyRole.initModel(this.db);
 			Stat.initModel(this.db);
+			Reminder.initModel(this.db);
 			await this.db.sync({ alter: true }); // Sync all tables to fix everything if updated
 			await this.console.success('startup', `Successfully connected to <<database>>.`, false);
 		} catch (e) {
diff --git a/src/lib/index.ts b/src/lib/index.ts
index 65a6e74..94a7dd9 100644
--- a/src/lib/index.ts
+++ b/src/lib/index.ts
@@ -24,6 +24,7 @@ export * from './extensions/discord.js/BushApplicationCommand.js';
 export type { BushApplicationCommandManager } from './extensions/discord.js/BushApplicationCommandManager.js';
 export type { BushApplicationCommandPermissionsManager } from './extensions/discord.js/BushApplicationCommandPermissionsManager.js';
 export type { BushBaseGuildEmojiManager } from './extensions/discord.js/BushBaseGuildEmojiManager.js';
+export type { BushBaseGuildVoiceChannel } from './extensions/discord.js/BushBaseGuildVoiceChannel.js';
 export * from './extensions/discord.js/BushButtonInteraction.js';
 export * from './extensions/discord.js/BushCategoryChannel.js';
 export type { BushChannel } from './extensions/discord.js/BushChannel.js';
@@ -68,6 +69,7 @@ export * from './models/Global.js';
 export * from './models/Guild.js';
 export * from './models/Level.js';
 export * from './models/ModLog.js';
+export * from './models/Reminder.js';
 export * from './models/Stat.js';
 export * from './models/StickyRole.js';
 export * from './utils/AllowedMentions.js';
diff --git a/src/lib/models/Reminder.ts b/src/lib/models/Reminder.ts
new file mode 100644
index 0000000..b8cd669
--- /dev/null
+++ b/src/lib/models/Reminder.ts
@@ -0,0 +1,77 @@
+import { Snowflake } from 'discord.js';
+import { nanoid } from 'nanoid';
+import { type Sequelize } from 'sequelize';
+import { BaseModel } from './BaseModel.js';
+const { DataTypes } = (await import('sequelize')).default;
+
+export interface ReminderModel {
+	id: string;
+	user: Snowflake;
+	messageUrl: string;
+	content: string;
+	created: Date;
+	expires: Date;
+	notified: boolean;
+}
+
+export interface ReminderModelCreationAttributes {
+	id?: string;
+	user: Snowflake;
+	messageUrl: string;
+	content: string;
+	created: Date;
+	expires: Date;
+	notified?: boolean;
+}
+
+export class Reminder extends BaseModel<ReminderModel, ReminderModelCreationAttributes> implements ReminderModel {
+	/**
+	 * The id of the reminder.
+	 */
+	public declare id: string;
+
+	/**
+	 * The user that the reminder is for.
+	 */
+	public declare user: Snowflake;
+
+	/**
+	 * The url of the message where the reminder was created.
+	 */
+	public declare messageUrl: string;
+
+	/**
+	 * The content of the reminder.
+	 */
+	public declare content: string;
+
+	/**
+	 * The date the reminder was created.
+	 */
+	public declare created: Date;
+
+	/**
+	 * The date when the reminder expires.
+	 */
+	public declare expires: Date;
+
+	/**
+	 * Whether the user has been notified about the reminder.
+	 */
+	public declare notified: boolean;
+
+	public static initModel(sequelize: Sequelize): void {
+		Reminder.init(
+			{
+				id: { type: DataTypes.STRING, primaryKey: true, defaultValue: nanoid },
+				user: { type: DataTypes.STRING, allowNull: false },
+				messageUrl: { type: DataTypes.STRING, allowNull: false },
+				content: { type: DataTypes.TEXT, allowNull: false },
+				created: { type: DataTypes.DATE, allowNull: false },
+				expires: { type: DataTypes.DATE, allowNull: false },
+				notified: { type: DataTypes.BOOLEAN, allowNull: false, defaultValue: false }
+			},
+			{ sequelize }
+		);
+	}
+}
diff --git a/src/tasks/handleReminders.ts b/src/tasks/handleReminders.ts
new file mode 100644
index 0000000..935a08c
--- /dev/null
+++ b/src/tasks/handleReminders.ts
@@ -0,0 +1,38 @@
+import { BushTask, Reminder } from '#lib';
+const { Op } = (await import('sequelize')).default;
+
+export default class HandlerRemindersTask extends BushTask {
+	public constructor() {
+		super('handlerReminders', {
+			delay: 30_000, // 30 seconds
+			runOnStart: true
+		});
+	}
+
+	public override async exec() {
+		const expiredEntries = await Reminder.findAll({
+			where: {
+				expires: {
+					[Op.lt]: new Date(Date.now() + 30_000) // Find all rows with an expiry date before 10 seconds from now
+				},
+				notified: false
+			}
+		});
+
+		void client.logger.verbose(`handlerReminders`, `Queried reminders, found <<${expiredEntries.length}>> expired reminders.`);
+
+		for (const entry of expiredEntries) {
+			setTimeout(() => {
+				void client.users
+					.send(
+						entry.user,
+						`The reminder you set ${util.dateDelta(entry.created)} ago has expired: ${util.format.bold(entry.content)}\n${
+							entry.messageUrl
+						}`
+					)
+					.catch(() => false);
+				void entry.update({ notified: true });
+			}, entry.expires.getTime() - new Date().getTime());
+		}
+	}
+}