nft-stripe-checkout

NFT Stripe Checkout

NFT-Stripe-Checkout is a template that lets users buy NFTs with their credit-cards using Stripe.

Tooling:

Author:

Project Walkthrough

NFT-Stripe-Checkout is a Next.js project that provides a checkout interface for purchasing NFTs using Stripe. It uses the Mintbase Wallet for user authentication.

Testnet only!

Note that this is currently a testnet-only template. It allows you to define a smart contract call, which the user is paying for. Until regulatory questions are answered, this will be a testnet-only thing. Please reach out if you would see value in having this on mainnet!

NOTE: As a standard on Mintbase as we use the latest versions of Next.js we recommend using pnpm, but the package manager is up to your personal choice.

Setup

1. First deploy a Testnet Mintbase Contract

2. Add mintbus.testnet as a minter to deployed contract contract, under Contract Settings

3. Login to your Stripe Account and find API Keys under developer section (get Publishable Key)

Environment Variables

Checkout .env.example and create a local env file (.env.local) with:

NEXT_PUBLIC_NFT_CONTRACT_ADDRESS="stripeteststore.mintspace2.testnet"
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY="""
NEXT_PUBLIC_MINTBASE_WALLET_URL="https://testnet.wallet.mintbase.xyz"
NEXT_PUBLIC_NETWORK="testnet"

Develop

To get started with the project, you need to install the dependencies first. Run the following command in your terminal:

pnpm install

After installing the dependencies, you can start the development server:

pnpm run dev

Then, open http://localhost:3000 with your browser to see the result.

Code Examples

Purchase Page

The Purchase Page is located in /src/app/page.tsx. It uses the useMbWallet hook from the @mintbase-js/react package to manage the wallet state. The onClick function sends a POST request to create a payment intent:

function PurchasePage() {
  const [clientSecret, setClientSecret] = useState("");

  const { activeAccountId, isConnected } = useMbWallet();

  const onClick = async () => {
    const resp = await fetch(
      "https://stripe2near-z3w7d7dnea-ew.a.run.app/payment-intent",
      {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          priceUsd: constants.priceUsd,
          action: mint({
            metadata: {
              reference: "NiztQFL98n8MgYKSu7FL3vdUnU_eUlM3fsQ0o3JEQCY",
              media: "eUdPgtRlT9Ua8ZHsGuNi1P8TUfVJaGUTH42NB1i1s4E",
            },
            ownerId: activeAccountId!,
            contractAddress: constants.tokenContractAddress,
          }),
        }),
      }
    );
    if (resp.ok) {
      const json = await resp.json();
      setClientSecret(json.clientSecret);
    }
  };

Credit Card Form

The Credit Card Form is located in nft-stripe-checkout/src/app/page.tsx. It uses the useStripe and useElements hooks from the @stripe/react-stripe-js package to manage the Stripe elements and confirm the payment:

const CreditCardForm = () => {
  const elements = useElements();
  const stripe = useStripe();
  const [isLoading, setIsLoading] = useState(false);
  const [isCompleted, setIsCompleted] = useState(false);

  const onClick = async () => {
    if (!stripe || !elements) {
      return;
    }

    setIsLoading(true);

    try {
      const { paymentIntent, error } = await stripe.confirmPayment({
        elements,
        confirmParams: {
          return_url: "http://localhost:3000",
        },
        redirect: "if_required",
      });
      if (error) {
        throw error.message;
      }
      if (paymentIntent.status === "succeeded") {
        alert(
          "Payment success. The NFT will be delivered to your wallet shortly."
        );
        setIsCompleted(true);
      } else {
        alert("Payment failed. Please try again.");
      }
    } catch (e) {
      alert(`There was an error with the payment. ${e}`);
    }

    setIsLoading(false);
  };

  return (
    <>
      <PaymentElement />

      <button
        className="bg-blue-600 hover:bg-blue-500 text-white font-bold py-2 px-4 rounded-lg w-full"
        onClick={onClick}
        disabled={isLoading || isCompleted || !stripe || !elements}
      >
        {isCompleted
          ? "Payment received"
          : isLoading
          ? "Please wait..."
          : "Pay now"}
      </button>
    </>
  );
};

Get in touch

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• Twitter: @mintbase