import { extractSingleJsonSchema } from 'suretype'
import { isSuretypeSchema, isTypeboxSchema } from './resolve-schema-lib.js'
import { TJSONSchema } from './types.js'

export function extractJsonSchema(libSchema: unknown): TJSONSchema | undefined {
  if (isTypeboxSchema(libSchema)) {
    return libSchema
  }

  if (isSuretypeSchema(libSchema)) {
    return extractSingleJsonSchema(libSchema)?.schema
  }

  return undefined
}