import 'server-only';

import { unstable_cache } from 'next/cache';
import { DB_MEMORY_TTL_MS, NEXT_CACHE_REVALIDATE_SECONDS } from '@/shared/config/env';
import { calculateVideoStats } from '@/entities/video/model/video';
import { listVideos } from './videoRepository';

export const VIDEO_COLLECTION_TAG = 'video-collection';

export const getCachedVideoDashboard = unstable_cache(
  async () => {
    const videos = await listVideos();

    return {
      videos,
      stats: calculateVideoStats(videos),
      cache: {
        generatedAt: new Date().toISOString(),
        nextRevalidateSeconds: NEXT_CACHE_REVALIDATE_SECONDS,
        memoryTtlMs: DB_MEMORY_TTL_MS,
      },
    };
  },
  ['video-dashboard-v1'],
  {
    revalidate: NEXT_CACHE_REVALIDATE_SECONDS,
    tags: [VIDEO_COLLECTION_TAG],
  },
);