package com.infendro.otp

import com.infendro.hash.*
import kotlin.random.Random

object SecretGenerator {
    private val random = Random.Default

    fun generate(
        algorithm: HashFunction = SHA1,
    ): ByteArray {
        val bytes = when (algorithm) {
            MD5 -> 16
            SHA1 -> 20
            SHA224 -> 28
            SHA256 -> 32
            SHA384 -> 48
            SHA512 -> 64
        }

        return ByteArray(bytes).also {
            random.nextBytes(it)
        }
    }
}