import { Redis } from "ioredis";
import { Queue } from "bullmq";
import { QUEUE_NAME } from "./constants";
import type { VideoJobData } from "./types";

let connection: Redis | null = null;
let queue: Queue<VideoJobData> | null = null;

export function getRedisConnection(): Redis {
  if (!connection) {
    connection = new Redis(process.env.REDIS_URL || "redis://localhost:6379", {
      maxRetriesPerRequest: null,
    });
  }
  return connection;
}

export function getVideoQueue(): Queue<VideoJobData> {
  if (!queue) {
    queue = new Queue<VideoJobData>(QUEUE_NAME, {
      connection: getRedisConnection(),
    });
  }
  return queue;
}

export async function enqueueVideoJob(data: VideoJobData) {
  const q = getVideoQueue();
  await q.add("process-video", data, {
    attempts: 2,
    backoff: { type: "exponential", delay: 5000 },
    removeOnComplete: 100,
    removeOnFail: 200,
  });
}