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package drivers
import (
"context"
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
// L1Client is an abstraction over an L1 Ethereum client functionality required
// by the batch submitter.
type L1Client interface {
// EstimateGas tries to estimate the gas needed to execute a specific
// transaction based on the current pending state of the backend blockchain.
// There is no guarantee that this is the true gas limit requirement as
// other transactions may be added or removed by miners, but it should
// provide a basis for setting a reasonable default.
EstimateGas(context.Context, ethereum.CallMsg) (uint64, error)
// HeaderByNumber returns a block header from the current canonical chain.
// If number is nil, the latest known header is returned.
HeaderByNumber(context.Context, *big.Int) (*types.Header, error)
// NonceAt returns the account nonce of the given account. The block number
// can be nil, in which case the nonce is taken from the latest known block.
NonceAt(context.Context, common.Address, *big.Int) (uint64, error)
// SendTransaction injects a signed transaction into the pending pool for
// execution.
//
// If the transaction was a contract creation use the TransactionReceipt
// method to get the contract address after the transaction has been mined.
SendTransaction(context.Context, *types.Transaction) error
// SuggestGasTipCap retrieves the currently suggested gas tip cap after 1559
// to allow a timely execution of a transaction.
SuggestGasTipCap(context.Context) (*big.Int, error)
// TransactionReceipt returns the receipt of a transaction by transaction
// hash. Note that the receipt is not available for pending transactions.
TransactionReceipt(context.Context, common.Hash) (*types.Receipt, error)
}