xrpl-dev-portal/_code-samples/non-fungible-token/go/nft-cancel/ws/main.go

package main

import (
	"fmt"

	"github.com/Peersyst/xrpl-go/pkg/crypto"
	"github.com/Peersyst/xrpl-go/xrpl/faucet"
	"github.com/Peersyst/xrpl-go/xrpl/transaction"
	txnTypes "github.com/Peersyst/xrpl-go/xrpl/transaction/types"
	"github.com/Peersyst/xrpl-go/xrpl/wallet"
	"github.com/Peersyst/xrpl-go/xrpl/websocket"
	"github.com/Peersyst/xrpl-go/xrpl/websocket/types"
)

func main() {
    // Connect to the XRPL devnet
    fmt.Println("Connecting to devnet...")
    client := websocket.NewClient(
        websocket.NewClientConfig().
            WithHost("wss://s.devnet.rippletest.net:51233").
            WithFaucetProvider(faucet.NewDevnetFaucetProvider()),
    )
    defer client.Disconnect()

    if err := client.Connect(); err != nil {
        panic(err)
    }

    if !client.IsConnected() {
        fmt.Println("Failed to connect to devnet")
        return
    }
    fmt.Println("Connected to devnet")
    fmt.Println()

    // Step 1: Fund wallet
    fmt.Println("Funding wallet...")

    // Create and fund the NFT minter wallet
    nftMinter, err := wallet.New(crypto.ED25519())
    if err != nil {
        panic(err)
    }
    if err := client.FundWallet(&nftMinter); err != nil {
        panic(err)
    }
    fmt.Println("NFT minter wallet funded!")

    // Step 2: Mint two NFTs
    fmt.Println("Minting first NFT...")

    nftMint := transaction.NFTokenMint{
        BaseTx: transaction.BaseTx{
            Account:         nftMinter.ClassicAddress,
            TransactionType: transaction.NFTokenMintTx,
        },
        NFTokenTaxon: 0,
        URI:          txnTypes.NFTokenURI("68747470733A2F2F676F6F676C652E636F6D"), // https://google.com
    }
    nftMint.SetTransferableFlag()

    responseMint, err := client.SubmitTxAndWait(nftMint.Flatten(), &types.SubmitOptions{
        Autofill: true,
        Wallet:   &nftMinter,
    })
    if err != nil {
        panic(err)
    }
    if !responseMint.Validated {
        fmt.Println("First NFTokenMint transaction is not in a validated ledger", responseMint)
        return
    }
    fmt.Println("First NFT minted successfully! - Hash: ", responseMint.Hash)
    fmt.Println()

    // Step 3: Retrieve the NFT token ID
    fmt.Println("Retrieving NFT ID...")

    metaMap, ok := responseMint.Meta.(map[string]any)
    if !ok {
        fmt.Println("Meta is not a map[string]any")
        return
    }

    nftokenID1, ok := metaMap["nftoken_id"].(string)
    if !ok {
        fmt.Println("nftoken_id not found or not a string")
        return
    }

    fmt.Println("nftoken_id:", nftokenID1)
    fmt.Println()

    // ------

    fmt.Println("Minting second NFT...")

    nftMint2 := transaction.NFTokenMint{
        BaseTx: transaction.BaseTx{
            Account:         nftMinter.ClassicAddress,
            TransactionType: transaction.NFTokenMintTx,
        },
        NFTokenTaxon: 0,
        URI:          txnTypes.NFTokenURI("68747470733A2F2F676F6F676C652E636F6D"), // https://google.com
    }
    nftMint2.SetTransferableFlag()

    responseMint2, err := client.SubmitTxAndWait(nftMint2.Flatten(), &types.SubmitOptions{
        Autofill: true,
        Wallet:   &nftMinter,
    })
    if err != nil {
        panic(err)
    }
    if !responseMint.Validated {
        fmt.Println("Second NFTokenMint transaction is not in a validated ledger", responseMint)
        return
    }
    fmt.Println("Second NFT minted successfully! - Hash: ", responseMint.Hash)
    fmt.Println()

    // Step 3: Retrieve the second NFT token ID
    fmt.Println("Retrieving second NFT ID...")

    metaMap2, ok := responseMint2.Meta.(map[string]any)
    if !ok {
        fmt.Println("Meta is not a map[string]any")
        return
    }

    nftokenID2, ok := metaMap2["nftoken_id"].(string)
    if !ok {
        fmt.Println("nftoken_id not found or not a string")
        return
    }

    fmt.Println("nftoken_id:", nftokenID2)
    fmt.Println()

    // Step 4: Cancel the NFT offers
    fmt.Println("Canceling NFT offers...")

    nftCancel := transaction.NFTokenCancelOffer{
        BaseTx: transaction.BaseTx{
            Account:         nftMinter.ClassicAddress,
            TransactionType: transaction.NFTokenAcceptOfferTx,
        },
        NFTokenOffers: []txnTypes.NFTokenID{
            txnTypes.NFTokenID(nftokenID1),
            txnTypes.NFTokenID(nftokenID2),
        },
    }

    response, err := client.SubmitTxAndWait(nftCancel.Flatten(), &types.SubmitOptions{
        Autofill: true,
        Wallet:   &nftMinter,
    })
    if err != nil {
        panic(err)
    }
    if !response.Validated {
        fmt.Println("NFTokenCancelOffer transaction is not in a validated ledger", response)
        return
    }
    fmt.Println("NFT offers canceled successfully! - Hash: ", response.Hash)
}