import type { BgpCommunity, DohProfile, ModuleRow } from '@/types/api'

export const NONE_OPTION = '__none__'

export function communityLabel(id: string | null | undefined, communities: BgpCommunity[]): string {
  if (!id) return '—'
  const c = communities.find((x) => x.id === id)
  if (!c) return `${id.slice(0, 8)}…`
  const t = c.title?.trim()
  return t || c.community
}

export function communityOptionLabel(c: BgpCommunity): string {
  const t = c.title?.trim()
  return t || c.community
}

export function nullableSelectValue(value: string | null | undefined): string {
  if (value === null || value === undefined || value === '') return NONE_OPTION
  return value
}

export function fromNullableSelect(value: string): string | null {
  if (value === NONE_OPTION || value === '') return null
  return value
}

export function moduleDohProfileIds(modRow: ModuleRow | null): string[] {
  if (!modRow) return []
  if (modRow.doh_profile_ids?.length) return modRow.doh_profile_ids
  return modRow.doh_profile_id ? [modRow.doh_profile_id] : []
}

export function dohProfileLabel(id: string, dohProfiles: DohProfile[]): string {
  const p = dohProfiles.find((d) => d.id === id)
  return p ? (p.name?.trim() ? `${p.name} (${p.url})` : p.url) : `${id.slice(0, 8)}…`
}

/** Short label for forms / chips — name preferred, else hostname from URL. */
export function dohProfileShortLabel(id: string, dohProfiles: DohProfile[]): string {
  const p = dohProfiles.find((d) => d.id === id)
  if (!p) return `${id.slice(0, 8)}…`
  const name = p.name?.trim()
  if (name) return name
  try {
    return new URL(p.url).hostname
  } catch {
    return p.url
  }
}

export function normalizeCdnSourceKind(k: string): 'plaintext' | 'json' {
  return k.trim().toLowerCase() === 'json' ? 'json' : 'plaintext'
}