import { EvmWalletProvider } from '@coinbase/agentkit';
import { getAddress, isAddress } from 'viem';
import { BriefError } from './brief-core.js';

/**
 * Minimal local-signing AgentKit EVM wallet for this example.
 * The native wallet interface is used; only typed-data signing is enabled.
 * signerFactory is invoked only when the guarded action calls signTypedData.
 */
export class LazyBriefWalletProvider extends EvmWalletProvider {
  #payer;
  #factory;

  constructor({ address, signerFactory } = {}) {
    super();
    if (typeof address !== 'string' || !isAddress(address, { strict: false }) ||
        /^0x0{40}$/i.test(address) || typeof signerFactory !== 'function') {
      throw new BriefError('INVALID_WALLET_CONFIGURATION');
    }
    this.#payer = getAddress(address);
    this.#factory = signerFactory;
  }

  getAddress() { return this.#payer; }
  getNetwork() { return { protocolFamily: 'evm', chainId: '8453', networkId: 'base-mainnet' }; }
  getName() { return 'blockchainiq_lazy_local_wallet'; }

  // WalletProvider's constructor calls this virtual hook on the next tick.
  // The published SDK default sends an unawaited analytics POST. Override the
  // hook in our own subclass so this minimal example has no telemetry request.
  trackInitialization() {}

  async signTypedData(input) {
    const signer = this.#factory();
    if (!signer || typeof signer.signTypedData !== 'function' ||
        typeof signer.address !== 'string' || signer.address.toLowerCase() !== this.#payer.toLowerCase()) {
      throw new BriefError('SIGNER_PAYER_MISMATCH');
    }
    return signer.signTypedData(input);
  }

  sign() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  signMessage() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  signTransaction() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  sendTransaction() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  waitForTransactionReceipt() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  readContract() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  getPublicClient() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  getBalance() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
  nativeTransfer() { throw new BriefError('UNSUPPORTED_WALLET_OPERATION'); }
}