import { Redis } from '../../redis'
import { logger } from '../../../helpers/logger'
import { VideoModel } from '../../../models/video/video'
import { VideoViewModel } from '../../../models/video/video-views'

async function processVideosViewsViews () {
  const hour = new Date().getHours()
  const startDate = new Date().setMinutes(0, 0, 0)
  const endDate = new Date().setMinutes(59, 59, 999)

  const videoIds = await Redis.Instance.getVideosIdViewed(hour)
  if (videoIds.length === 0) return

  logger.info('Processing videos views in job for hour %d.', hour)

  for (const videoId of videoIds) {
    const views = await Redis.Instance.getVideoViews(videoId, hour)
    if (isNaN(views)) {
      logger.error('Cannot process videos views of video %s in hour %d: views number is NaN.', videoId, hour)
    } else {
      logger.debug('Adding %d views to video %d in hour %d.', views, videoId, hour)

      await VideoModel.incrementViews(videoId, views)
      await VideoViewModel.create({
        startDate,
        endDate,
        views,
        videoId
      })
    }

    await Redis.Instance.deleteVideoViews(videoId, hour)
  }
}

// ---------------------------------------------------------------------------

export {
  processVideosViewsViews
}