initial commit

test.ts

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+import NDK, { NDKPrivateKeySigner, NDKKind } from "@nostr-dev-kit/ndk";
+import { NDKCashuWallet, NDKWalletStatus } from "@nostr-dev-kit/ndk-wallet";
+
+const ndk = new NDK({ explicitRelayUrls: ["wss://relay.primal.net"] });
+ndk.signer = NDKPrivateKeySigner.generate();
+
+/**
+ * Example function to set up an NDKCashuWallet
+ */
+async function setupCashuWallet(ndk: NDK, mints: string[]) {
+    // Create the Cashu wallet instance
+    const wallet = new NDKCashuWallet(ndk);
+
+    // Add mints to the wallet
+    for (const mint of mints) {
+        wallet.mints.push(mint);
+    }
+
+    // Generate or load a p2pk (Pay-to-Public-Key) token
+    // This is used for receiving payments with NIP-61 (nutzaps)
+    const p2pk = await wallet.getP2pk();
+    console.log(`Wallet p2pk: ${p2pk}`);
+
+    // Set up event listeners
+    wallet.on("ready", () => {
+        console.log("Cashu wallet is ready");
+    });
+
+    wallet.on("balance_updated", (balance) => {
+        console.log(`Wallet balance updated: ${balance?.amount} sats`);
+        // You might want to update your UI here
+    });
+
+    // Start the wallet - this will load the state of the wallet and begin monitoring for events
+    wallet.start();
+
+    // Assign to NDK instance for integration with other NDK features
+    ndk.wallet = wallet;
+
+    return wallet;
+}
+
+/**
+ * Get balance for a specific mint
+ */
+function getMintBalance(wallet: NDKCashuWallet, mintUrl: string) {
+    const balance = wallet.mintBalance(mintUrl);
+    console.log(`Balance for mint ${mintUrl}: ${balance} sats`);
+    return balance;
+}
+
+/**
+ * Check if the user already has a nutsack (NIP-60) wallet.
+ **/
+async function findExistingWallet(
+    ndk: NDK
+): Promise<NDKCashuWallet | undefined> {
+    const activeUser = ndk.activeUser;
+
+    if (!activeUser) throw "we need a user first, set a signer in ndk";
+
+    const event = await ndk.fetchEvent([
+        { kinds: [NDKKind.CashuWallet], authors: [activeUser.pubkey] },
+    ]);
+
+    // if we receive a CashuWallet event we load the wallet
+    if (event) return await NDKCashuWallet.from(event);
+}
+
+/**
+ * Example usage
+ */
+async function main() {
+    // we assume ndk is already connected and ready
+    // ...
+
+    let wallet: NDKCashuWallet | undefined;
+
+    wallet = await findExistingWallet(ndk);
+
+    // if we don't have a wallet, we create one
+    if (!wallet) {
+        // List of mints to use
+        const mints = ["https://8333.space:3338"];
+
+        // Setup the wallet
+        wallet = await setupCashuWallet(ndk, mints);
+    }
+
+    // Example: Check wallet balance
+    const totalBalance = wallet.balance?.amount || 0;
+    console.log(`Total wallet balance: ${totalBalance} sats`);
+
+    // Example: Need to fund wallet?
+    // See the Cashu Deposits snippet for funding your wallet with lightning
+
+    // Example: Get balance for specific mint
+    for (const mint of mints) {
+        getMintBalance(wallet, mint);
+    }
+
+    // Note: For monitoring nutzaps, see the Nutzap Monitor snippet
+
+    // Keep the connection open for monitoring
+    // In a real app, you'd use proper lifecycle management
+}
+
+setTimeout(main, 2500);