Solana Pay

pnpm add @solana-commerce/solana-pay

import { encodeURL } from "@solana-commerce/solana-pay";
import { address } from "gill";

const url = encodeURL({
  recipient: address("merchantWalletAddress123..."),
  amount: 100000000n, // 0.1 SOL (100 million lamports)
  label: "Coffee Shop",
  message: "Thanks for your order!"
});

console.log(url.toString());
// solana:merchantWalletAddress123...?amount=0.1&label=Coffee%20Shop&message=Thanks%20for%20your%20order!

import { encodeURL } from "@solana-commerce/solana-pay";
import { address } from "gill";

const usdcMint = address("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");

const url = encodeURL({
  recipient: address("merchantWallet..."),
  amount: 25000000n, // 25 USDC (6 decimals)
  splToken: usdcMint,
  label: "USDC Payment",
  message: "Pay with USDC stablecoin"
});

import { encodeURL } from "@solana-commerce/solana-pay";
import { address } from "gill";
import { Keypair } from "@solana/web3.js";

// Generate unique reference for this order
const orderReference = (await generateKeyPairSigner()).address;

const url = encodeURL({
  recipient: address("merchantWallet..."),
  amount: 500000000n, // 0.5 SOL
  reference: orderReference,
  memo: `Order-${Date.now()}`, // On-chain memo
  label: "E-commerce Store",
  message: "Complete your purchase"
});

// Later, query the blockchain for transactions containing this reference
// to verify payment was made

import { parseURL, ParseURLError } from "@solana-commerce/solana-pay";

try {
  const parsed = parseURL(
    "solana:merchant123...?amount=1.5&label=Store&reference=ref123..."
  );

  console.log(parsed.recipient); // Address object
  console.log(parsed.amount); // 1500000000n (1.5 SOL in lamports)
  console.log(parsed.label); // "Store"
  console.log(parsed.reference); // [Address]

  // Convert back to human-readable format
  const solAmount = Number(parsed.amount) / 1e9;
  console.log(`Payment of ${solAmount} SOL`);
} catch (error) {
  if (error instanceof ParseURLError) {
    console.error("Invalid Solana Pay URL:", error.message);
  }
}

import { parseURL, ParseURLError } from "@solana-commerce/solana-pay";

function validateSolanaPayURL(urlString: string): {
  valid: boolean;
  error?: string;
  data?: any;
} {
  try {
    const parsed = parseURL(urlString);
    // Additional business logic validation
    if (parsed.splToken) {
      return {
        valid: false,
        error: "Only SOL payments are supported"
      };
    }
    if (parsed.amount && parsed.amount < 1000000n) {
      return {
        valid: false,
        error: "Amount too small (minimum 0.001 SOL)"
      };
    }
    // etc.

    return {
      valid: true,
      data: {
        recipient: parsed.recipient.toString(),
        amount: parsed.amount ? Number(parsed.amount) / 1e9 : undefined,
        token: parsed.splToken?.toString()
      }
    };
  } catch (error) {
    return {
      valid: false,
      error: error instanceof ParseURLError ? error.message : "Unknown error"
    };
  }
}

import { createQR, encodeURL } from "@solana-commerce/solana-pay";
import { address } from "gill";

async function generatePaymentQR() {
  const url = encodeURL({
    recipient: address("merchant..."),
    amount: 100000000n, // 0.1 SOL
    label: "Coffee Shop"
  });

  const qrCode = await createQR(
    url.toString(),
    400, // 400x400 pixels
    "white", // White background
    "black" // Black foreground
  );

  // Display in browser
  document.getElementById("qr-container").innerHTML = qrCode;

  // Or use as image source
  document.getElementById("qr-image").src = qrCode;
}

import { createStyledQRCode, encodeURL } from "@solana-commerce/solana-pay";
import { address } from "gill";

async function createBrandedQR() {
  const url = encodeURL({
    recipient: address("merchant..."),
    amount: 25000000n, // 25 USDC (6 decimals)
    splToken: address("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"),
    label: "Coffee Shop",
    message: "Scan to pay with USDC"
  });

  const qr = await createStyledQRCode(url.toString(), {
    width: 600,
    margin: 3,
    color: {
      dark: "#9945FF", // Solana purple
      light: "#F5F5DC" // Beige
    },
    errorCorrectionLevel: "H", // Higher correction for logo
    dotStyle: "dots", // Circular dots
    cornerStyle: "extra-rounded",
    logo: "/coffee-logo.png", // Your logo
    logoSize: 120,
    logoBackgroundColor: "#FFFFFF", // White padding behind logo
    logoMargin: 10
  });

  return qr; // SVG string
}

import { createTransfer } from "@solana-commerce/solana-pay";
import { createSolanaClient } from "gill";
import { address } from "gill";

const rpc = createSolanaClient("https://api.mainnet-beta.solana.com").rpc;

// Build SOL transfer transaction
const txMessage = await createTransfer(rpc, address("sender-wallet-address"), {
  recipient: address("merchant-wallet-address"),
  amount: 100000000n, // 0.1 SOL
  memo: "Coffee purchase"
});

// Transaction is ready to sign and send
// (wallet signing is handled separately)
console.log("Transaction ready:", txMessage);

import { createTransfer } from "@solana-commerce/solana-pay";
import { createSolanaClient } from "gill";
import { address } from "gill";

const rpc = createSolanaClient("https://api.mainnet-beta.solana.com").rpc;
const usdcMint = address("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");

const txMessage = await createTransfer(rpc, address("sender-wallet"), {
  recipient: address("merchant-wallet"),
  amount: 25000000n, // 25 USDC (6 decimals)
  splToken: usdcMint,
  reference: [address("unique-ref-123...")],
  memo: "Order #12345"
});