github.com/ChainSafe/chainbridge-core@v1.4.2/chains/evm/cli/erc721/owner.go (about)

     1  package erc721
     2  
     3  import (
     4  	"fmt"
     5  	"math/big"
     6  
     7  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls/contracts/erc721"
     8  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls/evmtransaction"
     9  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/initialize"
    10  	"github.com/ChainSafe/chainbridge-core/util"
    11  
    12  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/flags"
    13  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/logger"
    14  	"github.com/ethereum/go-ethereum/common"
    15  	"github.com/rs/zerolog/log"
    16  	"github.com/spf13/cobra"
    17  )
    18  
    19  var ownerCmd = &cobra.Command{
    20  	Use:   "owner",
    21  	Short: "Get an ERC721 token owner",
    22  	Long:  "The owner subcommand gets a token owner from an ERC721 mintable contract",
    23  	PreRun: func(cmd *cobra.Command, args []string) {
    24  		logger.LoggerMetadata(cmd.Name(), cmd.Flags())
    25  	},
    26  	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
    27  		return util.CallPersistentPreRun(cmd, args)
    28  	},
    29  	RunE: func(cmd *cobra.Command, args []string) error {
    30  		c, err := initialize.InitializeClient(url, senderKeyPair)
    31  		if err != nil {
    32  			return err
    33  		}
    34  		t, err := initialize.InitializeTransactor(gasPrice, evmtransaction.NewTransaction, c, prepare)
    35  		if err != nil {
    36  			return err
    37  		}
    38  		return OwnerCmd(cmd, args, erc721.NewErc721Contract(c, Erc721Addr, t))
    39  	},
    40  	Args: func(cmd *cobra.Command, args []string) error {
    41  		err := ValidateOwnerFlags(cmd, args)
    42  		if err != nil {
    43  			return err
    44  		}
    45  
    46  		err = ProcessOwnerFlags(cmd, args)
    47  		return err
    48  	},
    49  }
    50  
    51  func BindOwnerFlags(cmd *cobra.Command) {
    52  	cmd.Flags().StringVar(&Erc721Address, "contract", "", "ERC721 contract address")
    53  	cmd.Flags().StringVar(&Token, "token", "", "ERC721 token ID")
    54  	flags.MarkFlagsAsRequired(cmd, "contract", "token")
    55  }
    56  
    57  func init() {
    58  	BindOwnerFlags(ownerCmd)
    59  }
    60  
    61  func ValidateOwnerFlags(cmd *cobra.Command, args []string) error {
    62  	if !common.IsHexAddress(Erc721Address) {
    63  		return fmt.Errorf("invalid ERC721 contract address %s", Erc721Address)
    64  	}
    65  	return nil
    66  }
    67  
    68  func ProcessOwnerFlags(cmd *cobra.Command, args []string) error {
    69  	Erc721Addr = common.HexToAddress(Erc721Address)
    70  
    71  	var ok bool
    72  	if TokenId, ok = big.NewInt(0).SetString(Token, 10); !ok {
    73  		return fmt.Errorf("invalid token id value")
    74  	}
    75  
    76  	return nil
    77  }
    78  
    79  func OwnerCmd(cmd *cobra.Command, args []string, erc721Contract *erc721.ERC721Contract) error {
    80  	owner, err := erc721Contract.Owner(TokenId)
    81  	if err != nil {
    82  		return err
    83  	}
    84  
    85  	log.Info().Msgf("%v token owner: %v", TokenId, owner)
    86  	return err
    87  }