🌉Cross-Chain Bridge

// Seller: Configure to receive on Base (even if buyers pay on Solana)
import { createX402Server } from '@dexterai/x402/server';

const server = createX402Server({
  payTo: '0x1234...abcd',                    // Your Base address
  network: 'eip155:8453',                    // Base mainnet
  facilitatorUrl: 'https://x402.dexter.cash', // Dexter facilitator
});

// The facilitator automatically bridges payments from Solana → Base
const requirements = await server.buildRequirements({
  amountAtomic: '1000000',  // 1 USDC
  resourceUrl: '/api/my-endpoint',
});

// Buyer: Pay on your preferred chain - bridging is transparent
import { createX402Client, createSolanaAdapter } from '@dexterai/x402';

const client = createX402Client({
  adapters: [createSolanaAdapter()],
  wallets: { solana: yourSolanaWallet },
});

// Even if the seller wants Base, you pay on Solana
// The facilitator handles bridging automatically
const response = await client.fetch('https://api.example.com/paid-endpoint', {
  method: 'POST',
  body: JSON.stringify({ data: 'your-request' }),
});

// Check if facilitator supports bridging via /supported
const res = await fetch('https://x402.dexter.cash/supported');
const { kinds } = await res.json();

// Look for bridge scheme with destinations
const bridgeKind = kinds.find(k => k.scheme === 'bridge');
if (bridgeKind?.extra?.bridgeDestinations) {
  console.log('Bridge destinations:', bridgeKind.extra.bridgeDestinations);
  console.log('Bridge fee:', bridgeKind.extra.bridgeFeePercent + '%');
}

// Get a real-time bridge quote
const params = new URLSearchParams({
  from: 'solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp',
  to: 'eip155:8453',
  amount: '10000000',  // 10 USDC in atomic units
  recipient: '0x40272E2eAc848Ea70db07Fd657D799bD309329C4',
});

const res = await fetch(`https://x402.dexter.cash/bridge/quote?${params}`);
const { quote } = await res.json();

console.log('You send:', quote.inputAmount);
console.log('They receive:', quote.outputAmount);
console.log('Bridge fee:', quote.bridgeFeePercent + '%');