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

function resolveAccounts() {
  const rawPrivateKey = (process.env.PRIVATE_KEY || "").trim();
  if (!rawPrivateKey) return [];
  const normalizedPrivateKey = rawPrivateKey.startsWith("0x") ? rawPrivateKey : `0x${rawPrivateKey}`;
  if (/^0x[0-9a-fA-F]{64}$/.test(normalizedPrivateKey)) return [normalizedPrivateKey];
  return [];
}

const sharedAccounts = resolveAccounts();
const devAccount = "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";

/** Minimal Hardhat config — Z Chain deploy only (avoids full monorepo compile). */
module.exports = {
  solidity: {
    compilers: [
      { version: "0.8.20", settings: { optimizer: { enabled: true, runs: 200 } } },
      { version: "0.8.19", settings: { optimizer: { enabled: true, runs: 200 } } },
    ],
  },
  networks: {
    hardhat: {
      chainId: process.env.Z_CHAIN_LOCAL === "1" ? 900002 : 31337,
    },
    zchain: {
      url: process.env.CHAIN_900002_RPC_URL || "http://127.0.0.1:8546",
      accounts: sharedAccounts.length ? sharedAccounts : [devAccount],
      chainId: 900002,
    },
  },
  paths: {
    sources: "./contracts/z-chain",
    tests: "./test/z-chain",
    cache: "./cache/zchain",
    artifacts: "./artifacts/zchain",
  },
};