Allow deleting reminders

commands/remind/delete-reminder.js

@@ -0,0 +1,20 @@
+const Command = require('../../structures/Command');
+
+module.exports = class DeleteReminderCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'delete-reminder',
+			aliases: ['delete-remind', 'delete-timer', 'del-reminder', 'del-remind', 'del-timer'],
+			group: 'remind',
+			memberName: 'remind',
+			description: 'Deletes your reminder.'
+		});
+	}
+
+	async run(msg) {
+		const exists = await this.client.timers.exists(msg.channel.id, msg.author.id);
+		if (!exists) return msg.reply('You do not have a timer set in this channel.');
+		await this.client.timers.deleteTimer(msg.channel.id, msg.author.id);
+		return msg.say('🕰️ Your timer has been deleted.');
+	}
+};

commands/remind/remind.js

@@ -0,0 +1,33 @@
+const Command = require('../../structures/Command');
+const moment = require('moment');
+const { shorten } = require('../../util/Util');
+
+module.exports = class RemindCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'remind',
+			aliases: ['timer', 'remind-me'],
+			group: 'remind',
+			memberName: 'remind',
+			description: 'Sets a reminder.',
+			args: [
+				{
+					key: 'time',
+					prompt: 'What do you want me to remind you about, and in how long?',
+					type: 'sherlock'
+				}
+			]
+		});
+	}
+
+	async run(msg, { time }) {
+		const exists = await this.client.timers.exists(msg.channel.id, msg.author.id);
+		if (exists) return msg.reply('Only one reminder can be set per channel per user.');
+		const timeMs = time.startDate.getTime() - Date.now();
+		if (timeMs > 0x7FFFFFFF) return msg.reply('Reminders have a maximum length of ~24.84 days.');
+		const display = moment().add(timeMs, 'ms').fromNow();
+		const title = time.eventTitle ? shorten(time.eventTitle, 500) : 'something';
+		await this.client.timers.setTimer(msg.channel.id, timeMs, msg.author.id, title);
+		return msg.say(`🕰️ Okay, I will remind you **"${title}"** ${display}.`);
+	}
+};