require("@nomicfoundation/hardhat-toolbox");
require("dotenv").config();

function vmid2103RpcUrl() {
  if (process.env.RPC_URL_2103) return process.env.RPC_URL_2103;
  if (process.env.RPC_TW_CORE_HTTP) return process.env.RPC_TW_CORE_HTTP;
  const raw = process.env.RPC_THIRDWEB_ADMIN_CORE || "";
  if (/^https?:\/\//i.test(raw)) return raw;
  const lan =
    process.env.RPC_THIRDWEB_ADMIN_LAN_ONLY === "1" ||
    process.env.RPC_THIRDWEB_ADMIN_LAN_ONLY === "true";
  if (lan) {
    const host = (raw || "192.168.11.217").replace(/^https?:\/\//i, "");
    return `http://${host}:8545`;
  }
  return "https://rpc.tw-core.d-bis.org";
}
const VMID_2103_RPC = vmid2103RpcUrl();

function resolveAccounts() {
  const raw = (process.env.PRIVATE_KEY || "").trim();
  if (!raw) return [];
  const k = raw.startsWith("0x") ? raw : `0x${raw}`;
  if (!/^0x[0-9a-fA-F]{64}$/.test(k)) {
    console.warn("PRIVATE_KEY unset or not 32-byte hex; Hardhat network will have no signer.");
    return [];
  }
  return [k];
}

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: {
    version: "0.8.23",
    settings: { optimizer: { enabled: true, runs: 200 } },
  },
  paths: {
    sources: "./contracts",
    tests: "./hh-test",
    cache: "./cache_hardhat",
    artifacts: "./artifacts",
  },
  networks: {
    chain138ThirdwebCore: {
      url: VMID_2103_RPC,
      chainId: 138,
      accounts: resolveAccounts(),
      gasPrice: 1_000_000_000,
    },
  },
};