import type { Address } from "abitype";
import type { BlockTag, EIP1193RequestFn, EIP1474Methods, Hex } from "viem";

type GetCodeParams = {
  address: Address;
  blockTag?: BlockTag;
};

/**
 * Retrieves the bytecode of a smart contract at the specified address.
 * @param request - The EIP1193 request function.
 * @param params - The parameters for the eth_getCode method.
 * @returns A promise that resolves to the bytecode of the smart contract.
 * @rpc
 * @example
 * ```ts
 * import { getRpcClient, eth_getCode } from "thirdweb/rpc";
 * const rpcRequest = getRpcClient({ client, chain });
 * const bytecode = await eth_getCode(rpcRequest, {
 *  address: "0x...",
 * });
 * ```
 */
export async function eth_getCode(
  request: EIP1193RequestFn<EIP1474Methods>,
  params: GetCodeParams,
): Promise<Hex> {
  return request({
    method: "eth_getCode",
    params: [params.address as Hex, params.blockTag || "latest"],
  });
}