// Copyright 2024 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package stateless

import (
	"slices"

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

// ToExtWitness converts our internal witness representation to the consensus one.
func (w *Witness) ToExtWitness() *ExtWitness {
	return &ExtWitness{
		Headers: slices.Clone(w.Headers),
		Codes:   slices.Clone(w.Codes),
		State:   slices.Clone(w.State),
	}
}

// ExtWitness is a witness RLP encoding for transferring across clients.
type ExtWitness struct {
	Headers []*types.Header `json:"headers"`
	Codes   []hexutil.Bytes `json:"codes"`
	State   []hexutil.Bytes `json:"state"`
}