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orc721_enumerable.go
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orc721_enumerable.go
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package ethcli
import (
"context"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"math/big"
"strings"
)
var (
openzeppelinERC721EnumerableAbi = `[{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]`
)
func (cli *ETHCli) ORC721TokenOfOwnerByIndex(token string, owner string, index *big.Int, blockNumber *big.Int) (*big.Int, error) {
ins, err := abi.JSON(strings.NewReader(openzeppelinERC721EnumerableAbi))
if err != nil {
return nil, err
}
data, _ := ins.Pack("tokenOfOwnerByIndex", common.HexToAddress(owner), index)
contract := common.HexToAddress(token)
bz, err := cli.CallContract(context.Background(), ethereum.CallMsg{
To: &contract,
Data: data,
}, blockNumber)
if err != nil {
return nil, err
}
results, err := ins.Unpack("tokenOfOwnerByIndex", bz)
if err != nil {
return nil, err
}
return results[0].(*big.Int), nil
}
func (cli *ETHCli) ORC721TotalSupply(token string, blockNumber *big.Int) (*big.Int, error) {
ins, err := abi.JSON(strings.NewReader(openzeppelinERC721EnumerableAbi))
if err != nil {
return nil, err
}
data, _ := ins.Pack("totalSupply")
contract := common.HexToAddress(token)
bz, err := cli.CallContract(context.Background(), ethereum.CallMsg{
To: &contract,
Data: data,
}, blockNumber)
if err != nil {
return nil, err
}
results, err := ins.Unpack("totalSupply", bz)
if err != nil {
return nil, err
}
return results[0].(*big.Int), nil
}
func (cli *ETHCli) ORC721TokenByIndex(token string, index *big.Int, blockNumber *big.Int) (*big.Int, error) {
ins, err := abi.JSON(strings.NewReader(openzeppelinERC721EnumerableAbi))
if err != nil {
return nil, err
}
data, _ := ins.Pack("tokenByIndex", index)
contract := common.HexToAddress(token)
bz, err := cli.CallContract(context.Background(), ethereum.CallMsg{
To: &contract,
Data: data,
}, blockNumber)
if err != nil {
return nil, err
}
results, err := ins.Unpack("tokenByIndex", bz)
if err != nil {
return nil, err
}
return results[0].(*big.Int), nil
}