feat: Add cron jobs

Author: PartMan7

package-lock.json

@@ -25,6 +25,7 @@
 		"@swc/core": "^1.7.40",
 		"@tailwindcss/cli": "^4.0.8",
 		"chokidar": "^3.5.3",
+		"cron": "^4.3.0",
 		"discord.js": "^14.11.0",
 		"dotenv": "^16.3.1",
 		"express": "^5.0.1",

package.json

@@ -0,0 +1,44 @@
+import { CronJob } from 'cron';
+
+import type { Client } from 'ps-client';
+
+// Timezones
+/** @see https://en.wikipedia.org/wiki/List_of_tz_database_time_zones */
+enum TimeZone {
+	IST = 'Asia/Kolkata',
+	GMT = 'Etc/GMT',
+}
+
+class PSCronJobManager {
+	client: Client;
+	readonly #jobs: Record<string, CronJob> = {};
+
+	constructor(client: Client) {
+		this.client = client;
+	}
+
+	register(id: string, cronTime: string, timeZone: TimeZone, callback: () => void): void {
+		this.#jobs[id] = CronJob.from({ name: id, cronTime, onTick: callback, timeZone });
+	}
+	kill(): void {
+		for (const jobId in this.#jobs) {
+			this.#jobs[jobId].stop();
+		}
+	}
+}
+
+export function startCron(client: Client): PSCronJobManager {
+	const Jobs = new PSCronJobManager(client);
+
+	// TODO Move back to Hindi and remove 'CRON:'
+	Jobs.register('hindi-automodchat-enable', '0 0 * * *', TimeZone.IST, () => {
+		client.rooms.get('botdevelopment')?.send('CRON: /automodchat 10, +');
+	});
+	Jobs.register('hindi-automodchat-disable', '0 7 * * *', TimeZone.IST, () => {
+		const room = client.rooms.get('botdevelopment');
+		room?.send('CRON: /modchat ac');
+		room?.send('CRON: /automodchat off');
+	});
+
+	return Jobs;
+}