Evaluate a transaction

import { EvaluateTransactionOperationType } from '@portal-hq/core'

// Basic transaction evaluation
const handleEvaluateTransaction = async () => {
  try {
    const transaction = {
      to: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
      value: '1000000000000000000', // 1 ETH
      data: undefined,
      maxFeePerGas: '30000000000',
      maxPriorityFeePerGas: '1500000000',
      gas: '21000',
      gasPrice: undefined
    };

    const evaluation = await portal.evaluateTransaction(
      transaction,
      'eip155:1',
      EvaluateTransactionOperationType.ALL
    );

    // Check validation results
    if (evaluation.validation) {
      // `status` only reports whether validation succeeded ('Success') or errored ('Error');
      // `resultType` is the security verdict
      console.log('Validation status:', evaluation.validation.status);
      console.log('Verdict:', evaluation.validation.resultType);

      if (evaluation.validation.resultType !== 'Benign') {
        console.log('Warning:', evaluation.validation.description || 'Unknown issue');

        // Print detected security features
        evaluation.validation.features?.forEach((feature) => {
          console.log('Security Feature:', feature.type);
          console.log('Description:', feature.description);
        });
      }
    }

    // Check simulation results
    if (evaluation.simulation) {
      console.log('Simulation Status:', evaluation.simulation.status);

      if (evaluation.simulation.error) {
        console.log('Simulation failed:', evaluation.simulation.error);
      }

      // Print asset changes
      Object.entries(evaluation.simulation.assetsDiffs ?? {}).forEach(([token, diffs]) => {
        console.log('\nToken:', token);
        diffs.forEach((diff) => {
          console.log('Incoming transfers:', diff['in']);
          console.log('Outgoing transfers:', diff.out);
        });
      });
    }
  } catch (error) {
    console.error('Evaluation failed:', error);
  }
};

// Contract interaction evaluation
const handleValidateTransaction = async () => {
  try {
    const transaction = {
      to: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
      value: '0',
      data: '0xa9059cbb000000000000000000000000742d35cc6634c0532925a3b844bc454e4438f44e0000000000000000000000000000000000000000000000000de0b6b3a7640000', // ERC20 transfer
      maxFeePerGas: undefined,
      maxPriorityFeePerGas: undefined,
      gas: '65000',
      gasPrice: '20000000000'
    };

    // Validate only
    const evaluation = await portal.evaluateTransaction(
      transaction,
      'eip155:1',
      EvaluateTransactionOperationType.VALIDATION
    );

    const validation = evaluation.validation;

    if (!validation) {
      // No verdict was returned, so treat the transaction as unverified
      console.log('Unverified: no validation result was returned');
      return;
    }

    // Decide based on the verdict (`resultType`), not `status`
    switch (validation.resultType) {
      case 'Benign':
        console.log('Transaction is safe');
        break;
      case 'Warning':
        console.log('Warning:', validation.description || 'Unknown warning');
        break;
      case 'Malicious':
        console.log('Blocked:', validation.reason || 'Unknown reason');
        break;
      case 'Error':
        // The transaction couldn't be validated, so don't treat it as safe
        console.log('Unverified:', validation.error || 'Validation failed');
        break;
      default:
        console.log('Unverified: unrecognized verdict', validation.resultType);
    }
  } catch (error) {
    console.error('Validation failed:', error);
  }
};