import { Ed25519KeyIdentity } from '@dfinity/identity';
import { mnemonicToSeedSync } from "bip39";
import {
    pub_key_to_address,
} from '@dfinity/rosetta-client';
let crypto;

const HARDENED = 0x80000000;

function toBigEndianArray(n) {
    const byteArray = new Uint8Array([0, 0, 0, 0]);
    for (let i = byteArray.length - 1; i >= 0; i--) {
        const byte = n & 0xff;
        byteArray[i] = byte;
        n = (n - byte) / 256;
    }
    return byteArray;
}

async function derive(
    parentKey,
    parentChaincode,
    i,
) {
    // From the spec: Data = 0x00 || ser256(kpar) || ser32(i)
    const data = new Uint8Array([0, ...parentKey, ...toBigEndianArray(i)]);
    const key = await crypto.subtle.importKey(
        'raw',
        parentChaincode,
        {
            name: 'HMAC',
            hash: { name: 'SHA-512' },
        },
        false,
        ['sign'],
    );

    const h = await crypto.subtle.sign('HMAC', key, data.buffer);
    const slipSeed = new Uint8Array(h.slice(0, 32));
    const chainCode = new Uint8Array(h.slice(32));
    return [slipSeed, chainCode];
}

async function generateMasterKey(
    seed,
) {
    const data = new TextEncoder().encode('ed25519 seed');
    const key = await crypto.subtle.importKey(
        'raw',
        data,
        {
            name: 'HMAC',
            hash: { name: 'SHA-512' },
        },
        false,
        ['sign'],
    );
    const h = await crypto.subtle.sign('HMAC', key, seed);
    const slipSeed = new Uint8Array(h.slice(0, 32));
    const chainCode = new Uint8Array(h.slice(32));
    return [slipSeed, chainCode];
}

export async function fromSeedWithSlip0010(
    masterSeed,
    derivationPath,
) {
    let [slipSeed, chainCode] = await generateMasterKey(masterSeed);

    for (let i = 0; i < derivationPath.length; i++) {
        [slipSeed, chainCode] = await derive(
            slipSeed,
            chainCode,
            derivationPath[i] | HARDENED,
        );
    }

    return Ed25519KeyIdentity.generate(slipSeed);
}

async function main() {
    try {
        crypto = await import('node:crypto');
    } catch (err) {
        console.log('crypto support is disabled!');
    }
    crypto.subtle
    const mem = "story goddess birth execute canoe sense poverty orchard feel mule indoor credit bulb arrest primary giggle turtle order tell glimpse grid act motion february"
    const seed = mnemonicToSeedSync(mem);
    const id = await fromSeedWithSlip0010(seed, [44, 223, 0, 0, 0]);
    console.log(id.getPublicKey().toDer())
    // console.log(pub_key_to_address(id.getPublicKey()))
}

main()

import { Ed25519KeyIdentity } from '@dfinity/identity';
import { mnemonicToSeedSync } from "bip39";
let crypto;

const HARDENED = 0x80000000;

function toBigEndianArray(n) {
    const byteArray = new Uint8Array([0, 0, 0, 0]);
    for (let i = byteArray.length - 1; i >= 0; i--) {
        const byte = n & 0xff;
        byteArray[i] = byte;
        n = (n - byte) / 256;
    }
    return byteArray;
}

async function derive(
    parentKey,
    parentChaincode,
    i,
) {
    // From the spec: Data = 0x00 || ser256(kpar) || ser32(i)
    const data = new Uint8Array([0, ...parentKey, ...toBigEndianArray(i)]);
    const key = await crypto.subtle.importKey(
        'raw',
        parentChaincode,
        {
            name: 'HMAC',
            hash: { name: 'SHA-512' },
        },
        false,
        ['sign'],
    );

    const h = await crypto.subtle.sign('HMAC', key, data.buffer);
    const slipSeed = new Uint8Array(h.slice(0, 32));
    const chainCode = new Uint8Array(h.slice(32));
    return [slipSeed, chainCode];
}

async function generateMasterKey(
    seed,
) {
    const data = new TextEncoder().encode('ed25519 seed');
    const key = await crypto.subtle.importKey(
        'raw',
        data,
        {
            name: 'HMAC',
            hash: { name: 'SHA-512' },
        },
        false,
        ['sign'],
    );
    const h = await crypto.subtle.sign('HMAC', key, seed);
    const slipSeed = new Uint8Array(h.slice(0, 32));
    const chainCode = new Uint8Array(h.slice(32));
    return [slipSeed, chainCode];
}

export async function fromSeedWithSlip0010(
    masterSeed,
    derivationPath,
) {
    let [slipSeed, chainCode] = await generateMasterKey(masterSeed);

    for (let i = 0; i < derivationPath.length; i++) {
        [slipSeed, chainCode] = await derive(
            slipSeed,
            chainCode,
            derivationPath[i] | HARDENED,
        );
    }

    return Ed25519KeyIdentity.generate(slipSeed);
}

async function main() {
    try {
        crypto = await import('node:crypto');
    } catch (err) {
        console.log('crypto support is disabled!');
    }
    crypto.subtle
    const mem = "story goddess birth execute canoe sense poverty orchard feel mule indoor credit bulb arrest primary giggle turtle order tell glimpse grid act motion february"
    const seed = mnemonicToSeedSync(mem);
    const id = await fromSeedWithSlip0010(seed, [44, 223, 0, 0, 0]);
    console.log(id.getPrincipal().toString())
}

main()