import { rm } from "node:fs/promises";

type Job = {
  dir: string;
  zipPath: string;
  createdAt: number;
};

const JOB_TTL_MS = 15 * 60 * 1000;
const jobs = new Map<string, Job>();

function sweepExpiredJobs(): void {
  const cutoff = Date.now() - JOB_TTL_MS;
  for (const [id, job] of jobs) {
    if (job.createdAt > cutoff) continue;
    jobs.delete(id);
    void rm(job.dir, { recursive: true, force: true });
  }
}

export function saveJob(dir: string, zipPath: string): string {
  sweepExpiredJobs();
  const id = crypto.randomUUID();
  jobs.set(id, { dir, zipPath, createdAt: Date.now() });
  return id;
}

export function takeJob(id: string): Job | null {
  const job = jobs.get(id);
  if (!job) return null;
  jobs.delete(id);
  return job;
}