add transfer ticket functionality

lib/transferTicket.ts

@@ -0,0 +1,36 @@
+import { ethers } from 'ethers';
+import { getContract } from './ethers';
+
+declare global {
+  interface Window {
+    ethereumProvider?: ethers.providers.ExternalProvider & {
+      isMetaMask?: boolean;
+      request?: (method: string, params?: unknown[]) => Promise<unknown>;
+    };
+  }
+}
+
+export const transferTicket = async (
+  ticketId: number,
+  receiverAddress: string
+): Promise<string> => {
+  try {
+    if (typeof window.ethereumProvider === 'undefined') {
+      throw new Error('Please install MetaMask or another Ethereum wallet');
+    }
+    await window.ethereumProvider.request?.({ method: 'eth_requestAccounts' });
+    const provider = new ethers.providers.Web3Provider(window.ethereumProvider);
+    const signer = provider.getSigner();
+    const contract = getContract().connect(signer);
+    if (!ethers.utils.isAddress(receiverAddress)) {
+      throw new Error('Invalid receiver address');
+    }
+
+    const tx = await contract.transferTicket(ticketId, receiverAddress);
+    const receipt = await tx.wait();
+    return receipt.transactionHash;
+  } catch (error) {
+    console.error('Error transferring ticket:', error);
+    throw error;
+  }
+};