import { BigNumber, providers } from "ethers";

const classicProviders = ["https://www.ethercluster.com/etc"];
const classicChainIds = [61];
const minGasPrice = BigNumber.from(1_000);

export const getEthProvider = (providerUrl: string, chainId?: number): providers.JsonRpcProvider =>
  new providers.JsonRpcProvider(
    providerUrl,
    (classicProviders.includes(providerUrl) || classicChainIds.includes(chainId))
      ? "classic"
      : undefined,
  );

// xDai hardcoded their gas price to 0 but it's not actually zero..
export const getGasPrice = async (
  provider: providers.Provider,
  providedChainId?: number,
): Promise<BigNumber> => {
  const chainId = providedChainId || (await provider.getNetwork())?.chainId;
  const price = await provider.getGasPrice();
  return (chainId === 100 && price.lt(minGasPrice)) ? minGasPrice : price;
};