import { BaseCommand, flags } from '@adonisjs/core/ace'
import { CommandOptions } from '@adonisjs/core/types/ace'
import NntpService from '#services/NntpService'
import QueueService from '#services/QueueService'
import DeferredService from '#services/DeferredService'

/**
 * Sends recorded deferred ranges (fully obfuscated ngPost articles, CONCEPT.md
 * D28) to the body queue, oldest first. Every article in them is downloaded:
 * their headers can't be grouped into files.
 */
export default class DeferredExpandRanges extends BaseCommand {
  public static commandName = 'deferred:expand-ranges'
  public static description = 'Queues the bodies of deferred article ranges (costly: every article is downloaded).'

  public static options: CommandOptions = {
    startApp: true,
  }

  @flags.number({ description: 'Ranges to expand', default: 10 })
  declare limit: number

  public async run() {
    try {
      const { ranges, articles } = await DeferredService.expandRanges(this.limit)
      this.logger.info(`Expanded ${ranges} ranges: ${articles} articles sent to the body queue.`)
    } finally {
      await NntpService.shutdown()
      await QueueService.closeAll()
    }
  }
}