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48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
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package neptoken
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import (
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/invoker"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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)
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// InfoClient is a set of RPC methods required to get all of the NEP-11/NEP-17
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// token data.
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type InfoClient interface {
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invoker.RPCInvoke
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GetContractStateByHash(hash util.Uint160) (*state.Contract, error)
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}
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// Info allows to get basic token info using RPC client.
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func Info(c InfoClient, hash util.Uint160) (*wallet.Token, error) {
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cs, err := c.GetContractStateByHash(hash)
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if err != nil {
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return nil, err
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}
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var standard string
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for _, st := range cs.Manifest.SupportedStandards {
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if st == manifest.NEP17StandardName || st == manifest.NEP11StandardName {
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standard = st
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break
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}
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}
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if standard == "" {
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return nil, fmt.Errorf("contract %s is not NEP-11/NEP17", hash.StringLE())
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}
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b := New(invoker.New(c, nil), hash)
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symbol, err := b.Symbol()
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if err != nil {
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return nil, err
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}
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decimals, err := b.Decimals()
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if err != nil {
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return nil, err
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}
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return wallet.NewToken(hash, cs.Manifest.Name, symbol, int64(decimals), standard), nil
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}
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