import type { Fragrance, AtUri } from '@/types/lexicon-types'

/**
 * Check if house can be deleted (no fragrances reference it)
 */
export function canDeleteHouse(
  houseUri: AtUri,
  fragrances: Fragrance[]
): { canDelete: boolean; reason?: string; count?: number } {
  const referencingFragrances = fragrances.filter(f => f.house === houseUri)

  if (referencingFragrances.length > 0) {
    return {
      canDelete: false,
      reason: `${referencingFragrances.length} fragrance(s) reference this house`,
      count: referencingFragrances.length
    }
  }

  return { canDelete: true }
}

/**
 * Get count of fragrances owned by user that reference a house
 */
export function getOwnedFragranceCount(
  houseUri: AtUri,
  fragrances: Fragrance[],
  ownerDid: string
): number {
  return fragrances.filter(f => {
    const [, , fragDid] = (f.uri || '').split('/')
    return f.house === houseUri && fragDid === ownerDid
  }).length
}

/**
 * Get all fragrances owned by user that reference a house
 */
export function getOwnedFragrancesForHouse(
  houseUri: AtUri,
  fragrances: Fragrance[],
  ownerDid: string
): Fragrance[] {
  return fragrances.filter(f => {
    const [, , fragDid] = (f.uri || '').split('/')
    return f.house === houseUri && fragDid === ownerDid
  })
}