neo-go/pkg/rpcclient/nep11.go
Roman Khimov f155a7f161 rpcclient: move result processing code into unwrap package
Which will be reused by upper-layer packages. It can be extended with more
types in future.
2022-08-09 17:38:47 +03:00

190 lines
8.7 KiB
Go

package rpcclient
import (
"fmt"
"github.com/google/uuid"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/nspcc-dev/neo-go/pkg/wallet"
)
// NEP11Decimals invokes `decimals` NEP-11 method on the specified contract.
func (c *Client) NEP11Decimals(tokenHash util.Uint160) (int64, error) {
return c.nepDecimals(tokenHash)
}
// NEP11Symbol invokes `symbol` NEP-11 method on the specified contract.
func (c *Client) NEP11Symbol(tokenHash util.Uint160) (string, error) {
return c.nepSymbol(tokenHash)
}
// NEP11TotalSupply invokes `totalSupply` NEP-11 method on the specified contract.
func (c *Client) NEP11TotalSupply(tokenHash util.Uint160) (int64, error) {
return c.nepTotalSupply(tokenHash)
}
// NEP11BalanceOf invokes `balanceOf` NEP-11 method on the specified contract.
func (c *Client) NEP11BalanceOf(tokenHash, owner util.Uint160) (int64, error) {
return c.nepBalanceOf(tokenHash, owner, nil)
}
// NEP11TokenInfo returns full NEP-11 token info.
func (c *Client) NEP11TokenInfo(tokenHash util.Uint160) (*wallet.Token, error) {
return c.nepTokenInfo(tokenHash, manifest.NEP11StandardName)
}
// TransferNEP11 creates an invocation transaction that invokes 'transfer' method
// on the given token to move the whole NEP-11 token with the specified token ID to
// the given account and sends it to the network returning just a hash of it.
func (c *Client) TransferNEP11(acc *wallet.Account, to util.Uint160,
tokenHash util.Uint160, tokenID string, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error) {
tx, err := c.CreateNEP11TransferTx(acc, tokenHash, gas, cosigners, to, tokenID, data)
if err != nil {
return util.Uint256{}, err
}
return c.SignAndPushTx(tx, acc, cosigners)
}
// CreateNEP11TransferTx creates an invocation transaction for the 'transfer'
// method of the given contract (token) to move the whole (or the specified amount
// of) NEP-11 token with the specified token ID to the given account and returns it.
// The returned transaction is not signed. CreateNEP11TransferTx is also a
// helper for TransferNEP11 and TransferNEP11D.
// `args` for TransferNEP11: to util.Uint160, tokenID string, data interface{};
// `args` for TransferNEP11D: from, to util.Uint160, amount int64, tokenID string, data interface{}.
func (c *Client) CreateNEP11TransferTx(acc *wallet.Account, tokenHash util.Uint160,
gas int64, cosigners []SignerAccount, args ...interface{}) (*transaction.Transaction, error) {
script, err := smartcontract.CreateCallWithAssertScript(tokenHash, "transfer", args...)
if err != nil {
return nil, fmt.Errorf("failed to create NEP-11 transfer script: %w", err)
}
from, err := address.StringToUint160(acc.Address)
if err != nil {
return nil, fmt.Errorf("bad account address: %w", err)
}
return c.CreateTxFromScript(script, acc, -1, gas, append([]SignerAccount{{
Signer: transaction.Signer{
Account: from,
Scopes: transaction.CalledByEntry,
},
Account: acc,
}}, cosigners...))
}
// NEP11TokensOf returns iterator over token IDs for the specified owner of the
// specified NFT token. First return value is the session ID, the second one is
// Iterator itself, the third one is an error. Use TraverseIterator method to
// traverse iterator values or TerminateSession to terminate opened iterator
// session. See TraverseIterator and TerminateSession documentation for more details.
func (c *Client) NEP11TokensOf(tokenHash util.Uint160, owner util.Uint160) (uuid.UUID, result.Iterator, error) {
return unwrap.SessionIterator(c.reader.Call(tokenHash, "tokensOf", owner))
}
// NEP11UnpackedTokensOf returns an array of token IDs for the specified owner of the specified NFT token
// (config.DefaultMaxIteratorResultItems at max). It differs from NEP11TokensOf in that no iterator session
// is used to retrieve values from iterator. Instead, unpacking VM script is created and invoked via
// `invokescript` JSON-RPC call.
func (c *Client) NEP11UnpackedTokensOf(tokenHash util.Uint160, owner util.Uint160) ([][]byte, error) {
return unwrap.ArrayOfBytes(c.reader.CallAndExpandIterator(tokenHash, "tokensOf", config.DefaultMaxIteratorResultItems, owner))
}
// Non-divisible NFT methods section start.
// NEP11NDOwnerOf invokes `ownerOf` non-divisible NEP-11 method with the
// specified token ID on the specified contract.
func (c *Client) NEP11NDOwnerOf(tokenHash util.Uint160, tokenID []byte) (util.Uint160, error) {
return unwrap.Uint160(c.reader.Call(tokenHash, "ownerOf", tokenID))
}
// Non-divisible NFT methods section end.
// Divisible NFT methods section start.
// TransferNEP11D creates an invocation transaction that invokes 'transfer'
// method on the given token to move the specified amount of divisible NEP-11 assets
// (in FixedN format using contract's number of decimals) to the given account and
// sends it to the network returning just a hash of it.
func (c *Client) TransferNEP11D(acc *wallet.Account, to util.Uint160,
tokenHash util.Uint160, amount int64, tokenID []byte, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error) {
from, err := address.StringToUint160(acc.Address)
if err != nil {
return util.Uint256{}, fmt.Errorf("bad account address: %w", err)
}
tx, err := c.CreateNEP11TransferTx(acc, tokenHash, gas, cosigners, from, to, amount, tokenID, data)
if err != nil {
return util.Uint256{}, err
}
return c.SignAndPushTx(tx, acc, cosigners)
}
// NEP11DBalanceOf invokes `balanceOf` divisible NEP-11 method on a
// specified contract.
func (c *Client) NEP11DBalanceOf(tokenHash, owner util.Uint160, tokenID []byte) (int64, error) {
return c.nepBalanceOf(tokenHash, owner, tokenID)
}
// NEP11DOwnerOf returns iterator over the specified NEP-11 divisible token owners. First return value
// is the session ID, the second one is Iterator itself, the third one is an error. Use TraverseIterator
// method to traverse iterator values or TerminateSession to terminate opened iterator session. See
// TraverseIterator and TerminateSession documentation for more details.
func (c *Client) NEP11DOwnerOf(tokenHash util.Uint160, tokenID []byte) (uuid.UUID, result.Iterator, error) {
return unwrap.SessionIterator(c.reader.Call(tokenHash, "ownerOf", tokenID))
}
// NEP11DUnpackedOwnerOf returns list of the specified NEP-11 divisible token owners
// (config.DefaultMaxIteratorResultItems at max). It differs from NEP11DOwnerOf in that no
// iterator session is used to retrieve values from iterator. Instead, unpacking VM
// script is created and invoked via `invokescript` JSON-RPC call.
func (c *Client) NEP11DUnpackedOwnerOf(tokenHash util.Uint160, tokenID []byte) ([]util.Uint160, error) {
arr, err := unwrap.ArrayOfBytes(c.reader.CallAndExpandIterator(tokenHash, "ownerOf", config.DefaultMaxIteratorResultItems, tokenID))
if err != nil {
return nil, err
}
owners := make([]util.Uint160, len(arr))
for i := range arr {
owners[i], err = util.Uint160DecodeBytesBE(arr[i])
if err != nil {
return nil, fmt.Errorf("not a Uint160 at %d: %w", i, err)
}
}
return owners, nil
}
// Divisible NFT methods section end.
// Optional NFT methods section start.
// NEP11Properties invokes `properties` optional NEP-11 method on the
// specified contract.
func (c *Client) NEP11Properties(tokenHash util.Uint160, tokenID []byte) (*stackitem.Map, error) {
return unwrap.Map(c.reader.Call(tokenHash, "properties", tokenID))
}
// NEP11Tokens returns iterator over the tokens minted by the contract. First return
// value is the session ID, the second one is Iterator itself, the third one is an
// error. Use TraverseIterator method to traverse iterator values or
// TerminateSession to terminate opened iterator session. See TraverseIterator and
// TerminateSession documentation for more details.
func (c *Client) NEP11Tokens(tokenHash util.Uint160) (uuid.UUID, result.Iterator, error) {
return unwrap.SessionIterator(c.reader.Call(tokenHash, "tokens"))
}
// NEP11UnpackedTokens returns list of the tokens minted by the contract
// (config.DefaultMaxIteratorResultItems at max). It differs from NEP11Tokens in that no
// iterator session is used to retrieve values from iterator. Instead, unpacking
// VM script is created and invoked via `invokescript` JSON-RPC call.
func (c *Client) NEP11UnpackedTokens(tokenHash util.Uint160) ([][]byte, error) {
return unwrap.ArrayOfBytes(c.reader.CallAndExpandIterator(tokenHash, "tokens", config.DefaultMaxIteratorResultItems))
}
// Optional NFT methods section end.