Signing messages

const signature = await sdk.signMessage({
  walletId,      // The wallet to sign with
  message,       // The message to sign (string)
  networkId      // The network context
});

import { ServerSDK, NetworkId } from '@phantom/server-sdk';

async function signAuthMessage(walletId: string) {
  const message = 'Please sign this message to authenticate with our service';

  const signature = await sdk.signMessage({
    walletId,
    message,
    networkId: NetworkId.SOLANA_MAINNET
  });

  console.log('Message:', message);
  console.log('Signature:', signature);
  
  return signature;
}

// Solana - Ed25519 signatures

const solanaSignature = await sdk.signMessage({
  walletId, 
  message: 'Hello Solana',
  networkId: NetworkId.SOLANA_MAINNET
});

// Ethereum - ECDSA signatures (coming soon)
const ethSignature = await sdk.signMessage({
  walletId,
  message: '0x48656c6c6f20576f726c64', // Hex encoded message
  networkId: NetworkId.ETHEREUM_MAINNET
});

async function signTimestampedMessage(
  walletId: string,
  action: string,
  data: any
) {
  const timestamp = new Date().toISOString();
  const message = JSON.stringify({
    action,
    data,
    timestamp,
    version: '1.0'
  });


  const signature = await sdk.signMessage({
    walletId,
    message,
    networkId: NetworkId.SOLANA_MAINNET
  });
  
  return {
    message,
    signature,
    timestamp
  };
}

// Example usage
const auditLog = await signTimestampedMessage(
  walletId,
  'TRANSFER_APPROVED',
  { to: recipientAddress, amount: '100 SOL' }
);