#!/usr/bin/env node
import { privateKeyToAccount } from 'viem/accounts';
import { BriefError, createBlockchainIqBriefTool, quoteBrief } from './index.js';

const USAGE = `Blockchain IQ LangChain market brief

node src/cli.js --quote
  One unsigned challenge; prints price and recipient. No wallet is loaded.

node src/cli.js --pay --pay-to 0xREVIEWED_RECIPIENT
  Invoke the LangChain tool once. Requires AGENT_PRIVATE_KEY in the environment.
  Exactly 0.01 USDC on Base; no retry after the one paid request.

No arguments or --help prints this help without reading a key or using the network.
Use a throwaway wallet with a small USDC balance; never put a key in CLI arguments.
`;

async function main() {
  const args = process.argv.slice(2);
  if (args.length === 0 || (args.length === 1 && args[0] === '--help')) {
    process.stdout.write(USAGE);
    return;
  }
  if (args.length === 1 && args[0] === '--quote') {
    process.stdout.write(JSON.stringify(await quoteBrief(), null, 2) + '\n');
    return;
  }
  if (args.length !== 3 || args[0] !== '--pay' || args[1] !== '--pay-to') {
    throw new BriefError('INVALID_ARGUMENTS');
  }
  // Lazy: even the private-key configuration is inspected only after quote validation.
  const brief = createBlockchainIqBriefTool({
    expectedPayTo: args[2],
    signerFactory: () => {
      const value = process.env.AGENT_PRIVATE_KEY;
      if (typeof value !== 'string' || !/^0x[0-9a-fA-F]{64}$/.test(value)) {
        throw new BriefError('PRIVATE_KEY_CONFIGURATION_REQUIRED');
      }
      return privateKeyToAccount(value);
    },
  });
  process.stdout.write(JSON.stringify(JSON.parse(await brief.invoke({})), null, 2) + '\n');
}

main().catch(error => {
  const safe = error instanceof BriefError ? error : new BriefError('COMMAND_FAILED');
  process.stderr.write(JSON.stringify({ error: safe.code,
    paymentMayHaveCommitted: safe.paymentMayHaveCommitted,
    instruction: 'Do not automatically repeat a failed paid call. Inspect its status separately.' }) + '\n');
  process.exitCode = 1;
});