import { createConfig, createStorage, http } from 'wagmi'
import { mainnet } from 'wagmi/chains'
import { metaMask } from 'wagmi/connectors'

export const chains = [mainnet] as const

export const config = createConfig({
  chains,
  connectors: [metaMask()],
  transports: {
    [mainnet.id]: http(),
  },
  // sessionStorage: clears on tab close, prevents stale auto-reconnect across sessions.
  // This means MetaMask only pops when the user explicitly clicks "Connect wallet".
  storage: typeof window !== 'undefined'
    ? createStorage({ storage: window.sessionStorage })
    : undefined,
  // Disable silent auto-reconnect on page mount.
  // Without this, wagmi checks localStorage/sessionStorage for a saved connector
  // and tries to reconnect MetaMask silently — which can pop the MetaMask window.
  // User must explicitly click "Connect wallet" each session.
  ssr: true,
})