BNB Chain Development: Access Binance's 200M Users with High-Performance Infrastructure

// Optimize wallet connection for Trust Wallet mobile users
import { useConnect, useAccount } from 'wagmi';
import { bsc } from 'wagmi/chains';

const WalletConnect = () => {
  const { connect, connectors } = useConnect();
  const { address, isConnected } = useAccount();

  // Prioritize Trust Wallet for BNB Chain users
  const trustWallet = connectors.find(
    (c) => c.name.toLowerCase().includes('trust')
  );
  const walletConnect = connectors.find(
    (c) => c.name === 'WalletConnect'
  );
  const metaMask = connectors.find(
    (c) => c.name === 'MetaMask'
  );

  // Trust Wallet has 60M+ users on BNB Chain
  return (
    <div>
      {!isConnected ? (
        <div>
          {/* Primary: Trust Wallet (mobile-first) */}
          {trustWallet && (
            <button
              onClick={() => connect({ connector: trustWallet })}
              className="primary-button"
            >
              Connect Trust Wallet
            </button>
          )}

          {/* Secondary: WalletConnect (mobile wallets) */}
          {walletConnect && (
            <button
              onClick={() => connect({ connector: walletConnect })}
              className="secondary-button"
            >
              WalletConnect
            </button>
          )}

          {/* Fallback: MetaMask (desktop) */}
          {metaMask && (
            <button
              onClick={() => connect({ connector: metaMask })}
              className="tertiary-button"
            >
              MetaMask
            </button>
          )}
        </div>
      ) : (
        <div>
          <p>Connected: {address}</p>
          <NetworkDisplay chain={bsc} />
        </div>
      )}
    </div>
  );
};

// Mobile detection for Trust Wallet in-app browser
const isTrustWallet = () => {
  return window.ethereum?.isTrust === true;
};

// Optimize for Trust Wallet mobile UX
if (isTrustWallet()) {
  // Auto-connect if user previously connected
  // Simplify UI for mobile screen
  // Use larger touch targets
}

// Integrate PancakeSwap for token swaps and liquidity
import { ethers } from 'ethers';

const PANCAKE_ROUTER = '0x10ED43C718714eb63d5aA57B78B54704E256024E';
const WBNB = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c';

// Swap tokens via PancakeSwap
const swapTokens = async (
  tokenIn: string,
  tokenOut: string,
  amountIn: bigint,
  signer: ethers.Signer
) => {
  const routerABI = [
    'function swapExactTokensForTokens(uint amountIn, uint amountOutMin, address[] path, address to, uint deadline) returns (uint[] amounts)',
    'function getAmountsOut(uint amountIn, address[] path) view returns (uint[] amounts)',
  ];

  const router = new ethers.Contract(
    PANCAKE_ROUTER,
    routerABI,
    signer
  );

  // Get expected output amount
  const path = [tokenIn, WBNB, tokenOut]; // Route through WBNB
  const amounts = await router.getAmountsOut(amountIn, path);
  const amountOutMin = (amounts[amounts.length - 1] * 95n) / 100n; // 5% slippage

  // Approve router to spend tokens
  const tokenContract = new ethers.Contract(
    tokenIn,
    ['function approve(address,uint256)'],
    signer
  );
  await tokenContract.approve(PANCAKE_ROUTER, amountIn);

  // Execute swap
  const deadline = Math.floor(Date.now() / 1000) + 60 * 20; // 20 minutes
  const tx = await router.swapExactTokensForTokens(
    amountIn,
    amountOutMin,
    path,
    await signer.getAddress(),
    deadline
  );

  await tx.wait();
  console.log('Swapped on PancakeSwap:', tx.hash);
};

// Add liquidity to PancakeSwap pool
const addLiquidity = async (
  tokenA: string,
  tokenB: string,
  amountA: bigint,
  amountB: bigint,
  signer: ethers.Signer
) => {
  const routerABI = [
    'function addLiquidity(address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline)',
  ];

  const router = new ethers.Contract(PANCAKE_ROUTER, routerABI, signer);

  // Approve both tokens
  // ... approval logic ...

  const deadline = Math.floor(Date.now() / 1000) + 60 * 20;
  const tx = await router.addLiquidity(
    tokenA,
    tokenB,
    amountA,
    amountB,
    (amountA * 95n) / 100n, // Min amounts with slippage
    (amountB * 95n) / 100n,
    await signer.getAddress(),
    deadline
  );

  await tx.wait();
  console.log('Added liquidity to PancakeSwap:', tx.hash);
};

// PancakeSwap is BNB Chain's leading DEX
// Essential for token liquidity and in-game swaps