import { NitroModules } from 'react-native-nitro-modules'
import type { StrongRandom } from './specs/StrongRandom.nitro'

export interface PartialNitroKryptomXStrongRandom {
  randomBytes(length: number): Int8Array
  fill(array: Int8Array): void
}

export const hybridStrongRandom =
  NitroModules.createHybridObject<StrongRandom>('StrongRandom')

export const StrongRandomService: PartialNitroKryptomXStrongRandom = {
  randomBytes(length: number): Int8Array {
    const res = new Int8Array(length)
    hybridStrongRandom.fill(res.buffer)
    return res
  },
  fill(array: Int8Array): void {
    if (array.buffer instanceof ArrayBuffer) {
      hybridStrongRandom.fill(array.buffer)
    } else {
      const newBuffer = new Int8Array(array.byteLength)
      hybridStrongRandom.fill(newBuffer.buffer)
      array.set(newBuffer)
    }
  },
}