Lịch sử giao dịch

const fetchFilteredTransactions = async (sortOrder = 'desc') => {
  const walletAddress = "M2mx93ekt1fmXSVkTrUL9xVFHkmME8HTUi5Cyc5aF7K";
  const transactionType = "NFT_SALE";
  let continuationSignature = null;
  let allFilteredTransactions = [];
  let maxRetries = 10; // Prevent infinite loops
  let retryCount = 0;

  // Determine which parameter to use based on sort order
  const continuationParam = sortOrder === 'asc' ? 'after-signature' : 'before-signature';

  while (retryCount < maxRetries) {
    // Build URL with optional continuation parameter
    let url = `https://mainnet.helius-rpc.com/v0/addresses/${walletAddress}/transactions?api-key=YOUR_API_KEY&type=${transactionType}&sort-order=${sortOrder}`;

    if (continuationSignature) {
      url += `&${continuationParam}=${continuationSignature}`;
    }

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

      // Check if we received an error about search period
      if (data.error && data.error.includes("Failed to find events within the search period")) {
        // Extract the signature from the error message
        const signatureMatch = data.error.match(/parameter set to ([A-Za-z0-9]+)/);

        if (signatureMatch && signatureMatch[1]) {
          console.log(`No results in this period. Continuing search from: ${signatureMatch[1]}`);
          continuationSignature = signatureMatch[1];
          retryCount++;
          continue; // Continue searching with new signature
        } else {
          console.log("No more transactions to search");
          break;
        }
      }

      // Check if we received transactions
      if (Array.isArray(data) && data.length > 0) {
        console.log(`Found ${data.length} ${transactionType} transactions`);
        allFilteredTransactions = [...allFilteredTransactions, ...data];

        // Set continuation signature for next page
        continuationSignature = data[data.length - 1].signature;
        retryCount = 0; // Reset retry count since we found results
      } else {
        console.log("No more transactions found");
        break;
      }

    } catch (error) {
      console.error("Error fetching transactions:", error);
      break;
    }
  }

  console.log(`Total ${transactionType} transactions found: ${allFilteredTransactions.length}`);
  return allFilteredTransactions;
};

// Usage examples:
// Descending order (newest first) - uses 'before-signature' parameter
fetchFilteredTransactions('desc');

// Ascending order (oldest first) - uses 'after-signature' parameter
fetchFilteredTransactions('asc');

const fetchTransactionsBySlotRange = async () => {
  const walletAddress = "M2mx93ekt1fmXSVkTrUL9xVFHkmME8HTUi5Cyc5aF7K";
  const startSlot = 148000000;
  const endSlot = 148100000;

  const url = `https://mainnet.helius-rpc.com/v0/addresses/${walletAddress}/transactions?api-key=YOUR_API_KEY&gte-slot=${startSlot}&lte-slot=${endSlot}`;

  const response = await fetch(url);
  const transactions = await response.json();
  console.log(`Transactions between slots ${startSlot} and ${endSlot}:`, transactions);
};

const fetchOldestTransactions = async () => {
  const walletAddress = "M2mx93ekt1fmXSVkTrUL9xVFHkmME8HTUi5Cyc5aF7K";
  const url = `https://mainnet.helius-rpc.com/v0/addresses/${walletAddress}/transactions?api-key=YOUR_API_KEY&sort-order=asc&limit=10`;

  const response = await fetch(url);
  const transactions = await response.json();
  console.log("10 oldest transactions:", transactions);
};

const fetchTransactionsWithATA = async () => {
  const walletAddress = "M2mx93ekt1fmXSVkTrUL9xVFHkmME8HTUi5Cyc5aF7K";

  const url = `https://mainnet.helius-rpc.com/v0/addresses/${walletAddress}/transactions?api-key=YOUR_API_KEY&token-accounts=balanceChanged&sort-order=desc&limit=50`;

  const response = await fetch(url);
  const transactions = await response.json();
  console.log("Most recent transactions (including ATA transfers)", transactions);
};

const fetchFilteredTransactionsAdvanced = async () => {
  const walletAddress = "M2mx93ekt1fmXSVkTrUL9xVFHkmME8HTUi5Cyc5aF7K";

  // Get NFT sales from the last 7 days, oldest first
  const now = Math.floor(Date.now() / 1000);
  const sevenDaysAgo = now - (7 * 24 * 60 * 60);

  const url = `https://mainnet.helius-rpc.com/v0/addresses/${walletAddress}/transactions?api-key=YOUR_API_KEY&type=NFT_SALE&gte-time=${sevenDaysAgo}&sort-order=asc&limit=50`;

  const response = await fetch(url);
  const transactions = await response.json();
  console.log("NFT sales from last 7 days (oldest first):", transactions);
};