export type EditorBackKind =
  | 'dashboard'
  | 'search'
  | 'inbox'
  | 'notebook'
  | 'archive'
  | 'shared'
  | 'reminders'
  | 'generic'

type SearchLike = Pick<URLSearchParams, 'get'>

/**
 * Destination of the editor back button, from the URL that opened the note.
 * Never inferred from the note's own notebook.
 */
export function resolveEditorBackKind(
  pathname: string,
  searchParams: SearchLike,
): EditorBackKind {
  const from = searchParams.get('from')
  if (from === 'dashboard' || searchParams.get('peekNote')) return 'dashboard'
  if (from === 'search' || Boolean(searchParams.get('search')?.trim())) return 'search'
  if (pathname.startsWith('/archive')) return 'archive'
  if (searchParams.get('reminders') === '1') return 'reminders'
  if (searchParams.get('shared') === '1') return 'shared'
  if (searchParams.get('notebook')) return 'notebook'
  if (from === 'inbox' || searchParams.get('forceList') === '1') return 'inbox'
  return 'generic'
}

export function editorBackLabelKey(kind: EditorBackKind): string {
  switch (kind) {
    case 'dashboard':
      return 'notes.backToHome'
    case 'search':
      return 'notes.backToSearchResults'
    case 'inbox':
      return 'notes.backToInbox'
    case 'notebook':
      return 'notes.backToNotebook'
    case 'archive':
      return 'notes.backToArchive'
    case 'shared':
      return 'notes.backToShared'
    case 'reminders':
      return 'notes.backToReminders'
    default:
      return 'general.back'
  }
}