Cách lấy số dư ví

// Only show tokens with non-zero balances
const url = `https://api.helius.xyz/v1/wallet/${address}/balances?api-key=YOUR_API_KEY&showZeroBalance=false`;

// Exclude native SOL from results
const url = `https://api.helius.xyz/v1/wallet/${address}/balances?api-key=YOUR_API_KEY&showNative=false`;

// Get only the top 50 tokens by value
const url = `https://api.helius.xyz/v1/wallet/${address}/balances?api-key=YOUR_API_KEY&limit=50`;

{
  "balances": [
    {
      "mint": "So11111111111111111111111111111111111111111",
      "symbol": "SOL",
      "name": "Solana",
      "balance": 1.5,
      "decimals": 9,
      "pricePerToken": 145.32,
      "usdValue": 217.98,
      "logoUri": "https://raw.githubusercontent.com/solana-labs/token-list/main/assets/mainnet/So11111111111111111111111111111111111111112/logo.png",
      "tokenProgram": "spl-token"
    },
    {
      "mint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "symbol": "USDC",
      "name": "USD Coin",
      "balance": 1000.5,
      "decimals": 6,
      "pricePerToken": 1.0,
      "usdValue": 1000.5,
      "logoUri": "https://example.com/usdc-logo.png",
      "tokenProgram": "spl-token"
    }
  ],
  "nfts": [
    {
      "mint": "7Xq8wXyXVqfBPPqVJjPDwG9zN5wCVxBYZ6z7vPYBzr6F",
      "name": "Degen Ape #1234",
      "imageUri": "https://example.com/nft.png",
      "collectionName": "Degen Ape Academy",
      "collectionAddress": "DegN1dXmU2uYa4n7U9qTh7YNYpK4u8L9qXx7XqYqJfGH",
      "compressed": false
    }
  ],
  "totalUsdValue": 1218.48,
  "pagination": {
    "page": 1,
    "limit": 100,
    "hasMore": true
  }
}

const renderPortfolio = async (address) => {
  const { balances, totalUsdValue } = await getWalletBalances(address);

  console.log(`Current Page Value: $${totalUsdValue.toLocaleString()}`);
  console.log(`\nTop Holdings:`);

  // totalUsdValue is page-scoped; paginate before computing full portfolio value.
  balances.slice(0, 10).forEach((token, i) => {
    if (token.usdValue) {
      console.log(`${i + 1}. ${token.symbol}: ${token.balance.toFixed(4)} ($${token.usdValue.toFixed(2)})`);
    }
  });
};

const analyzeConcentration = async (address) => {
  const { balances, totalUsdValue } = await getWalletBalances(address);

  const tokensWithValue = balances.filter(t => t.usdValue);

  if (tokensWithValue.length === 0) {
    console.log('No tokens with USD pricing data available');
    return null;
  }

  const topToken = tokensWithValue[0];
  const pageConcentration = (topToken.usdValue / totalUsdValue) * 100;

  console.log(`Largest Position on Current Page: ${topToken.symbol} (${pageConcentration.toFixed(1)}%)`);

  if (pageConcentration > 50) {
    console.log(`Warning: Current page is highly concentrated in ${topToken.symbol}`);
  }

  return { topToken, pageConcentration };
};

const getTokenBalance = async (address, tokenMint) => {
  const { balances } = await getWalletBalances(address);

  const token = balances.find(t => t.mint === tokenMint);

  if (!token) {
    console.log(`Token not found in wallet`);
    return null;
  }

  console.log(`${token.symbol} Balance: ${token.balance}`);
  console.log(`USD Value: $${token.usdValue || 'N/A'}`);

  return token;
};

// Example: Check USDC balance
getTokenBalance(
  "86xCnPeV69n6t3DnyGvkKobf9FdN2H9oiVDdaMpo2MMY",
  "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v" // USDC mint
);

const exportHoldingsSnapshot = async (address) => {
  const { balances, totalUsdValue } = await getWalletBalances(address);

  const snapshot = {
    date: new Date().toISOString(),
    address,
    pageValueUSD: totalUsdValue,
    holdings: balances
      .filter(t => t.usdValue)
      .map(t => ({
        symbol: t.symbol,
        mint: t.mint,
        balance: t.balance,
        pricePerToken: t.pricePerToken,
        usdValue: t.usdValue
      }))
  };

  console.log(JSON.stringify(snapshot, null, 2));
  return snapshot;
};

const getAllBalances = async (address) => {
  let allBalances = [];
  let page = 1;
  let hasMore = true;

  while (hasMore) {
    const url = `https://api.helius.xyz/v1/wallet/${address}/balances?api-key=YOUR_API_KEY&page=${page}&limit=100`;

    const response = await fetch(url);
    const data = await response.json();

    allBalances = allBalances.concat(data.balances);
    hasMore = data.pagination.hasMore;
    page++;

    console.log(`Fetched page ${data.pagination.page}, total tokens so far: ${allBalances.length}`);
  }

  console.log(`Total tokens: ${allBalances.length}`);
  return allBalances;
};