import { ed25519 } from '@noble/curves/ed25519.js'
import { bytesToHex } from '@noble/hashes/utils.js'
import { mnemonicToSeedSync, validateMnemonic } from '@scure/bip39'
import { wordlist } from '@scure/bip39/wordlists/english.js'

const example_mnemonic = "runway civil fish reveal rather talk just annual sadness embody divert detect level hill sail tent hawk real arctic final nephew glad bicycle tilt"

const deriveSeed = function (mnemonic: string): Uint8Array {
    try {
        validateMnemonic(mnemonic, wordlist)
    } catch (err) {
        console.error(err instanceof Error ? err.message : "Invalid mnemonic")
    }
    return mnemonicToSeedSync(mnemonic)
}

const deriveKeys = function (seed: Uint8Array) {
    let priv: Uint8Array = seed.slice(0, 32)
    return { privateKey: priv, publicKey: new Uint8Array(ed25519.getPublicKey(priv)) }
}

const main = function () {
    const seed = deriveSeed(example_mnemonic)
    console.log('Seed (Hex): ', bytesToHex(seed))

    const recoveredKeys = deriveKeys(seed)
    console.log('\nPrivate Key (Hex):', bytesToHex(recoveredKeys.privateKey))
    console.log('Public Key (Hex): ', bytesToHex(recoveredKeys.publicKey))
}

main()