// Copyright 2021 Evmos Foundation
// This file is part of Evmos' Ethermint library.
//
// The Ethermint library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Ethermint library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
package types

import (
	ethaccounts "github.com/ethereum/go-ethereum/accounts"
)

var (
	// Bip44CoinType satisfies EIP84. See https://github.com/ethereum/EIPs/issues/84 for more info.
	Bip44CoinType uint32 = 60

	// BIP44HDPath is the default BIP44 HD path used on Ethereum.
	BIP44HDPath = ethaccounts.DefaultBaseDerivationPath.String()
)

type (
	HDPathIterator func() ethaccounts.DerivationPath
)

// HDPathIterator receives a base path as a string and a boolean for the desired iterator type and
// returns a function that iterates over the base HD path, returning the string.
func NewHDPathIterator(basePath string, ledgerIter bool) (HDPathIterator, error) {
	hdPath, err := ethaccounts.ParseDerivationPath(basePath)
	if err != nil {
		return nil, err
	}

	if ledgerIter {
		return ethaccounts.LedgerLiveIterator(hdPath), nil
	}

	return ethaccounts.DefaultIterator(hdPath), nil
}