@ledgerhq/coin-hedera/lib-es/network/thirdweb.js

Ledger Hedera Coin integration

import { getEnv } from "@ledgerhq/live-env";
import network from "@ledgerhq/live-network";
import { pad } from "viem";
import { HEDERA_MAINNET_CHAIN_ID, ERC20_TRANSFER_EVENT_TOPIC } from "../constants";
import { toEVMAddress } from "../logic/utils";
const API_URL = getEnv("API_HEDERA_THIRDWEB_URL");
async function fetchERC20Transactions(contractAddress, options) {
    const transactions = [];
    const params = new URLSearchParams(options);
    let page = 1;
    let hasMorePages = true;
    while (hasMorePages) {
        params.set("page", page.toString());
        const response = await network({
            method: "GET",
            url: `${API_URL}/v1/contracts/${HEDERA_MAINNET_CHAIN_ID}/${contractAddress}/events?${params.toString()}`,
        });
        const newTransactions = response.data.result.events;
        transactions.push(...newTransactions);
        // stop if we received fewer items than the limit or no items
        if (newTransactions.length < Number(options.limit) || newTransactions.length === 0) {
            hasMorePages = false;
        }
        else {
            page++;
        }
    }
    return transactions;
}
async function getERC20TransactionsForAccount({ address, contractAddresses, transactionFetcher = fetchERC20Transactions, since, }) {
    const allTransactions = [];
    const evmAddress = await toEVMAddress(address);
    if (contractAddresses.length === 0) {
        return allTransactions;
    }
    if (!evmAddress) {
        return allTransactions;
    }
    const baseParams = {
        limit: "1000",
        filterTopic0: ERC20_TRANSFER_EVENT_TOPIC,
        ...(since && { filterBlockTimestampGte: since }),
    };
    for (const contractAddress of contractAddresses) {
        const outTransactionOptions = {
            ...baseParams,
            filterTopic1: pad(evmAddress).toString(),
        };
        const inTransactionOptions = {
            ...baseParams,
            filterTopic2: pad(evmAddress).toString(),
        };
        const outgoingTxs = await transactionFetcher(contractAddress, outTransactionOptions);
        const incomingTxs = await transactionFetcher(contractAddress, inTransactionOptions);
        allTransactions.push(...outgoingTxs, ...incomingTxs);
    }
    return allTransactions;
}
// Thirdweb API is used in addition to mirror node because:
// - mirror node has a 1-week range limitation for ERC20 events queries
// - mirror node has rate limits that we could exceed with ERC20 integration
export const thirdwebClient = {
    fetchERC20Transactions,
    getERC20TransactionsForAccount,
};
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