// Copyright 2015 The go-ethereum Authors
// (original work)
// Copyright 2024 The Erigon Authors
// (modifications)
// This file is part of Erigon.
//
// Erigon 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.
//
// Erigon 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 Erigon. If not, see <http://www.gnu.org/licenses/>.

package runtime

import (
	"github.com/erigontech/erigon/execution/protocol"
	"github.com/erigontech/erigon/execution/protocol/misc"
	"github.com/erigontech/erigon/execution/vm"
	"github.com/erigontech/erigon/execution/vm/evmtypes"
)

func NewEnv(cfg *Config) *vm.EVM {
	txContext := evmtypes.TxContext{
		Origin:   cfg.Origin,
		GasPrice: cfg.GasPrice,
	}

	blockContext := evmtypes.BlockContext{
		CanTransfer: protocol.CanTransfer,
		Transfer:    misc.Transfer,
		GetHash:     cfg.GetHashFn,
		Coinbase:    cfg.Coinbase,
		BlockNumber: cfg.BlockNumber,
		Time:        cfg.Time,
		Difficulty:  *cfg.Difficulty,
		GasLimit:    cfg.GasLimit,
		BaseFee:     cfg.BaseFee,
	}

	return vm.NewEVM(blockContext, txContext, cfg.State, cfg.ChainConfig, cfg.EVMConfig)
}
