client

type Balancer interface {
	// BalanceOf returns the balances of ETH and multiple erc20 tokens for multiple accounts
	BalanceOf(context.Context, *big.Int, map[ethCommon.Address]map[ethCommon.Address]struct{}) (map[ethCommon.Address]map[ethCommon.Address]*big.Int, error)
}

type EthClient interface {
	Balancer

	BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)
	BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
	TransactionByHash(ctx context.Context, hash common.Hash) (tx *types.Transaction, isPending bool, err error)
	SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error)
	DumpBlock(ctx context.Context, blockNr int64) (*state.Dump, error)
	BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)
	CallContract(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) ([]byte, error)
	ModifiedAccountStatesByNumber(ctx context.Context, num uint64) (*state.DirtyDump, error)
	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
	GetERC20(ctx context.Context, addr common.Address, num int64) (*model.ERC20, error)
	GetTotalDifficulty(ctx context.Context, hash common.Hash) (*big.Int, error)
	GetBlockReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error)
	// Get ETH transfer logs
	GetTransferLogs(ctx context.Context, hash common.Hash) ([]*types.TransferLog, error)
	BatchBalanceAt(ctx context.Context, accounts []common.Address, blockNumber *big.Int) ([]*big.Int, error)
	BatchCallContract(ctx context.Context, msgs []*ethereum.CallMsg, blockNumber *big.Int) ([][]byte, error)
	Close()
}