import { flatten } from "flat"

export function flattenInput(
  input: unknown
): Record<string, unknown> | undefined {
  if (typeof input !== "object" || input === null) {
    return undefined
  }

  const onlyPrimitives = Object.entries(input).reduce(
    (acc, [key, value]) => {
      if (
        typeof value === "string" ||
        typeof value === "number" ||
        typeof value === "boolean"
      ) {
        acc[key] = value
      }
      return acc
    },
    {} as Record<string, unknown>
  )

  if (onlyPrimitives && Object.keys(onlyPrimitives).length === 0) {
    return undefined
  }

  return flatten({ input: onlyPrimitives })
}