Setup

"use client";

import { Connector } from "wagmi";
import { SignInWithBaseButton } from "@base-org/account-ui/react";
import { useState } from "react";

interface SignInWithBaseProps {
  connector: Connector;
}

export function SignInWithBase({ connector }: SignInWithBaseProps) {
  const [verificationResult, setVerificationResult] = useState<string>("");

  async function handleBaseAccountConnect() {
    const provider = await connector.getProvider();
    if (provider) {
      try {
        // Generate a fresh nonce (this will be overwritten with the backend nonce)
        const clientNonce =
          Math.random().toString(36).substring(2, 15) +
          Math.random().toString(36).substring(2, 15);
        console.log("clientNonce", clientNonce);
        // Connect with SIWE to get signature, message, and address
        const accounts = await (provider as any).request({
          method: "wallet_connect",
          params: [
            {
              version: "1",
              capabilities: {
                signInWithEthereum: {
                  nonce: clientNonce,
                  chainId: "0x2105", // Base Mainnet - 8453
                },
              },
            },
          ],
        });

        // Verify the signature on the backend
        /*
        const walletAddress = accounts.accounts[0].address;
        const signature =
          accounts.accounts[0].capabilities.signInWithEthereum.signature;
        const message =
          accounts.accounts[0].capabilities.signInWithEthereum.message;
        const verifyResponse = await fetch("/api/auth/verify", {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({
            address: walletAddress,
            message,
            signature,
          }),
        });

        const result = await verifyResponse.json();
        */
        const result={success:true, address:accounts[0].address} // Mock response

        if (result.success) {
          setVerificationResult(`Verified! Address: ${result.address}`);
        } else {
          setVerificationResult(`Verification failed: ${result.error}`);
        }
      } catch (err) {
        console.error("Error:", err);
        setVerificationResult(
          `Error: ${err instanceof Error ? err.message : "Unknown error"}`
        );
      }
    } else {
      console.error("No provider");
    }
  }

  return (
    <div>
      <div style={{ width: "300px" }}>
        <SignInWithBaseButton
          onClick={handleBaseAccountConnect}
          variant="solid"
          colorScheme="system"
          align="center"
        />
      </div>
      {verificationResult && (
        <div style={{ marginTop: "10px" }}>{verificationResult}</div>
      )}
    </div>
  );
}