import { BaseCommand, flags } from '@adonisjs/core/ace'
import type { CommandOptions } from '@adonisjs/core/types/ace'
import Planner from '#services/planner'

/**
 * Merges adjacent planned tail ranges (Planner.mergeTail): the tail planner added a sliver a group every round
 * while nothing leased the tail; now it grows the group's open range instead, and this packs what is there.
 */
export default class RangesMergeTail extends BaseCommand {
  static commandName = 'ranges:merge-tail'
  static description = 'Merges adjacent planned tail ranges into ranges of RANGE_ARTICLES'
  static options: CommandOptions = { startApp: true }

  @flags.boolean({ description: 'Only count what would be merged' })
  declare dryRun: boolean

  async run() {
    const { candidates, merged, dropped } = await Planner.mergeTail(this.dryRun)
    this.logger.info(
      `${candidates} planned tail ranges: ${dropped} ${this.dryRun ? 'would merge' : 'merged'} into ${merged} grown ranges (${candidates - dropped} left).`
    )
  }
}