import fetch from 'node-fetch';
import { getRpcUrl } from '../config';

/**
 * Make an RPC call to the blockchain
 * @template T - The expected return type
 * @param {string} method - The RPC method to call
 * @param {unknown[]} params - The parameters for the RPC method
 * @returns {Promise<T>} - A promise that resolves with the result of the RPC call
 */
export async function callRpc<T = unknown>(method: string, params: unknown[] = []): Promise<T> {
  try {
    const rpcUrl = getRpcUrl();
    const response = await fetch(rpcUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        jsonrpc: '2.0',
        id: 1,
        method,
        params,
      }),
    });

    const data = await response.json();

    if (data.error) {
      console.error('RPC Error:', data.error);
      throw new Error(data.error.message || 'RPC call failed');
    }

    return data.result as T;
  } catch (error) {
    console.error('Error calling RPC:', error);
    throw error;
  }
}