evm

type Chain struct {
	Selector uint64

	Client OnchainClient
	// Note the Sign function can be abstract supporting a variety of key storage mechanisms (e.g. KMS etc).
	DeployerKey *bind.TransactOpts
	Confirm     ConfirmFunc
	// Users are a set of keys that can be used to interact with the chain.
	// These are distinct from the deployer key.
	Users []*bind.TransactOpts

	// SignHash allows signing of arbitrary hashes using the deployer key's signing mechanism.
	// This function signature matches the expected format: func([]byte) ([]byte, error)
	SignHash func([]byte) ([]byte, error)

	// ZK deployment specifics
	IsZkSyncVM          bool
	ClientZkSyncVM      *clients.Client
	DeployerKeyZkSyncVM *accounts.Wallet
}

type ConfirmFunc func(tx *types.Transaction) (uint64, error)

type OnchainClient interface {
	bind.ContractBackend
	bind.DeployBackend

	BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)
	NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error)
}