import { createConfig, http } from 'wagmi';
import { mainnet, sepolia, base, arbitrum } from 'wagmi/chains';

// Create wagmiConfig
const metadata = {
  name: 'MortgageFi',
  description: 'Decentralized Mortgage Lending Platform',
  url: 'https://mortgagefi.app',
  icons: ['https://mortgagefi.app/logo.png']
};

// Prefer custom RPCs to avoid public-provider rate limits (429)
const baseRpc = process.env.NEXT_PUBLIC_RPC_BASE;
const arbitrumRpc = process.env.NEXT_PUBLIC_RPC_ARBITRUM;
const enableMainnet = process.env.NEXT_PUBLIC_ENABLE_MAINNET === 'true';

export const config = createConfig({
  chains: [base, arbitrum, ...(enableMainnet ? [mainnet] : []), sepolia],
  transports: {
    [base.id]: baseRpc ? http(baseRpc, { batch: true, retryCount: 2, retryDelay: 250 }) : http(undefined, { batch: true, retryCount: 2, retryDelay: 250 }),
    [arbitrum.id]: arbitrumRpc ? http(arbitrumRpc, { batch: true, retryCount: 2, retryDelay: 250 }) : http(undefined, { batch: true, retryCount: 2, retryDelay: 250 }),
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
  ssr: true,
});