package wrapper import ( "fmt" "github.com/nspcc-dev/neo-go/pkg/encoding/fixedn" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neofs-node/pkg/morph/client" "github.com/nspcc-dev/neofs-node/pkg/morph/client/balance" ) // Wrapper is a wrapper over balance contract // client which implements: // * tool for obtaining the amount of funds in the client's account; // * tool for obtaining decimal precision of currency transactions. // // Working wrapper must be created via constructor New. // Using the Wrapper that has been created with new(Wrapper) // expression (or just declaring a Wrapper variable) is unsafe // and can lead to panic. type Wrapper struct { client *balance.Client } // Option allows to set an optional // parameter of ClientWrapper. type Option func(*opts) type opts []client.StaticClientOption func defaultOpts() *opts { return new(opts) } // TryNotary returns option to enable // notary invocation tries. func TryNotary() Option { return func(o *opts) { *o = append(*o, client.TryNotary()) } } // NewFromMorph returns the wrapper instance from the raw morph client. func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8, opts ...Option) (*Wrapper, error) { o := defaultOpts() for i := range opts { opts[i](o) } staticClient, err := client.NewStatic(cli, contract, fee, ([]client.StaticClientOption)(*o)...) if err != nil { return nil, fmt.Errorf("could not create static client of Balance contract: %w", err) } enhancedBalanceClient, err := balance.New(staticClient) if err != nil { return nil, fmt.Errorf("could not create Balance contract client: %w", err) } return &Wrapper{client: enhancedBalanceClient}, nil }