frostfs-node/pkg/morph/client/balance/balanceOf.go

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package balance
import (
"fmt"
"math/big"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-sdk-go/owner"
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)
// BalanceOf receives the amount of funds in the client's account
// through the Balance contract call, and returns it.
func (c *Client) BalanceOf(id *owner.ID) (*big.Int, error) {
h, err := address.StringToUint160(id.String())
if err != nil {
return nil, err
}
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invokePrm := client.TestInvokePrm{}
invokePrm.SetMethod(balanceOfMethod)
invokePrm.SetArgs(h)
prms, err := c.client.TestInvoke(invokePrm)
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if err != nil {
return nil, fmt.Errorf("could not perform test invocation (%s): %w", balanceOfMethod, err)
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} else if ln := len(prms); ln != 1 {
return nil, fmt.Errorf("unexpected stack item count (%s): %d", balanceOfMethod, ln)
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}
amount, err := client.BigIntFromStackItem(prms[0])
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if err != nil {
return nil, fmt.Errorf("could not get integer stack item from stack item (%s): %w", balanceOfMethod, err)
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}
return amount, nil
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}