// VulcanizeDB
// Copyright © 2019 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 (
	"github.com/cerc-io/ipld-eth-server/v5/pkg/log"
	"github.com/ethereum/go-ethereum/common"
	"github.com/jmoiron/sqlx"
)

// HandleZeroAddrPointer will return an emtpy string for a nil address pointer
func HandleZeroAddrPointer(to *common.Address) string {
	if to == nil {
		return ""
	}
	return to.Hex()
}

// HandleZeroAddr will return an empty string for a 0 value address
func HandleZeroAddr(to common.Address) string {
	if to.Hex() == "0x0000000000000000000000000000000000000000" {
		return ""
	}
	return to.Hex()
}

// Rollback sql transaction and log any error
func Rollback(tx *sqlx.Tx) {
	if err := tx.Rollback(); err != nil {
		log.Error(err)
	}
}