Trading Signal

#!/usr/bin/env node
// trading-signal CLI — self-contained, zero-dep, Node >= 22
// Usage: node cli.mjs <command> '<json_params>'
//
// Commands:
//   smart-money  POST  on-chain Smart Money trading signals (BSC + Solana)

// ---- inline HTTP helper (self-contained, zero dependency) ----
const TIMEOUT_MS = 10_000;
const UA = { 'Accept-Encoding': 'identity', 'User-Agent': 'binance-web3/2.0 (Skill)' };

const qs = (p) => Object.entries(p)
  .filter(([, v]) => v != null)
  .map(([k, v]) => `${encodeURIComponent(k)}=${encodeURIComponent(v)}`)
  .join('&');

async function call({ url, method = 'GET', body, headers = {} }) {
  const ctrl = new AbortController();
  const timer = setTimeout(() => ctrl.abort(), TIMEOUT_MS);
  const opts = { method, headers: { ...UA, ...headers }, signal: ctrl.signal };
  if (method === 'POST') { opts.headers['content-type'] = 'application/json'; opts.body = JSON.stringify(body || {}); }
  let res;
  try { res = await fetch(url, opts); }
  catch { clearTimeout(timer); throw Object.assign(new Error('Network request failed'), { exitCode: 3 }); }
  clearTimeout(timer);
  const data = await res.json();
  if (res.status >= 400) throw Object.assign(new Error(`HTTP ${res.status}`), { exitCode: 1, body: data });
  return data;
}

// ---- per-command supported chains (client-side fail-fast) ----
const CHAINS = {
  'smart-money': new Set(['56', 'CT_501']),
};

function validateChainId(cmd, chainId) {
  const allowed = CHAINS[cmd];
  if (!allowed) return;
  const id = String(chainId ?? '');
  if (!allowed.has(id)) {
    const supported = [...allowed].map((c) => `"${c}"`).join(', ');
    throw Object.assign(
      new Error(`${cmd}: unsupported chainId "${chainId}". Supported: ${supported}`),
      { exitCode: 1 },
    );
  }
}

// ---- commands: (params) => { url, method?, body?, headers? } ----
const COMMANDS = {
  'smart-money': (p) => {
    validateChainId('smart-money', p.chainId);
    return {
      url: 'https://web3.binance.com/bapi/defi/v1/public/wallet-direct/buw/wallet/web/signal/smart-money/ai',
      method: 'POST',
      body: p,
    };
  },
};

// ---- exports (for unit testing; direct execution still works — see dispatch below) ----
export { COMMANDS, call, qs, UA, TIMEOUT_MS, CHAINS, validateChainId };

// ---- CLI dispatch (only runs when executed directly, not when imported) ----
if (import.meta.url === `file://${process.argv[1]}`) {
  const [cmd, paramsStr] = process.argv.slice(2);

  if (!cmd || cmd === '--help' || cmd === '-h') {
    console.log("Usage: node cli.mjs <command> '<json_params>'\n\nCommands:");
    for (const name of Object.keys(COMMANDS)) console.log(`  ${name}`);
    process.exit(0);
  }

  const builder = COMMANDS[cmd];
  if (!builder) { console.error(`Unknown command: ${cmd}\nRun with --help to see available commands.`); process.exit(1); }

  let params = {};
  if (paramsStr) {
    try { params = JSON.parse(paramsStr); }
    catch { console.error('Invalid JSON params'); process.exit(1); }
  }

  try {
    const result = await call(builder(params));
    console.log(JSON.stringify(result, null, 2));
  } catch (err) {
    console.error(err.message);
    if (err.body) console.log(JSON.stringify(err.body, null, 2));
    process.exit(err.exitCode || 1);
  }
}