import { createPublicClient, http, PublicClient, fallback } from 'viem';
import { arbitrum, arbitrumSepolia, optimism } from 'viem/chains';

export const getEvmChainClient = (chainId: number): PublicClient => {
  if (chainId === 42161) {
    const ethClient = createPublicClient({
      chain: arbitrum,
      transport: fallback([
        http('https://arb1.arbitrum.io/rpc'),
        http(
          'https://arb-mainnet.g.alchemy.com/v2/1b2ynCIHpMWDV52EjjYkkPQdAeOy8z69'
        ),
      ]),
    });

    return ethClient;
  } else if (chainId === 10) {
    const ethClient = createPublicClient({
      chain: optimism,
      transport: fallback([
        http('https://mainnet.optimism.io'),
        http(
          'https://opt-mainnet.g.alchemy.com/v2/1b2ynCIHpMWDV52EjjYkkPQdAeOy8z69'
        ),
      ]),
    });

    return ethClient as PublicClient;
  } else if (chainId === 421614) {
    const ethClient = createPublicClient({
      chain: arbitrumSepolia,
      transport: http(),
    });

    return ethClient;
  } else {
    throw new Error(`Unsupported chainId: ${chainId}`);
  }
};