// VulcanizeDB
// Copyright © 2020 Vulcanize

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program 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 Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package shared

import (
	"fmt"
	"math/big"

	"github.com/ethereum/go-ethereum/core/types"
)

// ChainConfig returns the appropriate ethereum chain config for the provided chain id
func TxSigner(kind TxType, chainID uint64) (types.Signer, error) {
	switch kind {
	case Standard, EIP1559:
		return types.NewEIP155Signer(new(big.Int).SetUint64(chainID)), nil
	case OptimismL2, OptimismL1ToL2:
		return types.NewOVMSigner(new(big.Int).SetUint64(chainID)), nil
	default:
		return nil, fmt.Errorf("chain config for chainid %d not available", chainID)
	}
}