/** Split a group name into normalized hierarchy segments. */
export function splitSampleGroupPath(groupName: string, separator: string): string[] {
  const parts = groupName
    .split(separator)
    .map(part => part.trim())
    .filter(part => part.length > 0)
  return parts.length > 0 ? parts : [groupName]
}

/** First normalized hierarchy segment, used as the reorderable family key. */
export function getSampleGroupMajorPrefix(groupName: string, separator: string): string {
  return splitSampleGroupPath(groupName, separator)[0]
}

/** Normalized path above a concrete leaf group. */
export function getSampleGroupParentPath(groupName: string, separator: string): string {
  const parts = splitSampleGroupPath(groupName, separator)
  return parts.length > 1 ? parts.slice(0, -1).join(separator) : ''
}