import jwt from 'jsonwebtoken';
import dotenv from 'dotenv';
dotenv.config();

const BASE = 'http://localhost:4000';
const ADMIN = '6a00cefe524bebd27037a968';
const token = jwt.sign({ id: ADMIN }, process.env.CRM_JWT_SECRET, { expiresIn: '30m' });

const res = await fetch(`${BASE}/api/agent/stream`, {
  method: 'POST',
  headers: { 'content-type': 'application/json', authorization: `Bearer ${token}` },
  body: JSON.stringify({
    message: 'Show me the lead temperature split and how many follow-ups are overdue.',
    session_id: 'stream-' + Math.random().toString(36).slice(2, 8),
  }),
});

console.log('status', res.status, res.headers.get('content-type'));

const reader = res.body.getReader();
const dec = new TextDecoder();
let buf = '';
let events = 0;

for (;;) {
  const { value, done } = await reader.read();
  if (done) break;
  buf += dec.decode(value, { stream: true });
  const frames = buf.split('\n\n');
  buf = frames.pop() ?? '';
  for (const f of frames) {
    const line = f.split('\n').find((l) => l.startsWith('data: '));
    if (!line) { if (f.startsWith(':')) console.log('  · heartbeat'); continue; }
    const ev = JSON.parse(line.slice(6));
    events++;
    if (ev.type === 'step') console.log(`  → step: ${ev.label}${ev.detail ? ` — ${ev.detail.slice(0, 70)}` : ''}`);
    else if (ev.type === 'blocks' || ev.type === 'result') {
      const kinds = (ev.blocks || []).map((b) => b.type).join(', ');
      if (ev.blocks?.length) console.log(`  ✔ ${ev.type}: [${kinds}]`);
    } else console.log(`  · ${ev.type}`);
  }
}
console.log(`\ntotal SSE events: ${events}`);
process.exit(0);