/**
 * Filters a 2D series of `{name, ...}` records by case-insensitive substring on
 * the `name` field. Keeps the dataset shape (one inner array per series).
 * Used by the Searcher action's data transform.
 */
export function filterBySearchText(input: unknown, search: string): unknown {
  if (!search) return input
  const needle = search.toLowerCase()
  if (!Array.isArray(input)) return input
  return input.map((series: unknown): unknown => {
    if (!Array.isArray(series)) return series
    return series.filter((item: unknown) => {
      if (item == null) return false
      if (typeof item === 'object' && 'name' in item) {
        const rawName = (item as { name: unknown }).name
        const name = rawName == null ? '' : stringifyPrimitive(rawName)
        return name.toLowerCase().includes(needle)
      }
      return stringifyPrimitive(item).toLowerCase().includes(needle)
    })
  })
}

function stringifyPrimitive(v: unknown): string {
  if (typeof v === 'string') return v
  if (typeof v === 'number' || typeof v === 'boolean') return String(v)
  return ''
}