/**
 * Ti-Pote — Hardware bring-up demo.
 *
 * Run with:
 *   HARDWARE_SERIAL_PORT=/dev/ttyUSB0 pnpm --filter @ti-pote/robot-client hw:demo
 *
 * What it does:
 *   1. Opens the serial link to the ESP32 firmware.
 *   2. Pings it and prints the round-trip time.
 *   3. Cycles through every emotion with a 1.2 s pause so you can
 *      watch the OLED eyes react.
 *   4. Finishes on NEUTRAL and disconnects cleanly.
 *
 * Use this as a smoke test after flashing new firmware, before
 * wiring the full robot-client/cloud pipeline.
 */

import { HardwareService, Emotion } from '../src/hardware/index.js';

const path = process.env.HARDWARE_SERIAL_PORT ?? '/dev/ttyUSB0';
const baudRate = parseInt(process.env.HARDWARE_SERIAL_BAUD ?? '921600', 10);

const EMOTION_SEQUENCE: Emotion[] = [
  Emotion.NEUTRAL,
  Emotion.HAPPY,
  Emotion.SAD,
  Emotion.ANGRY,
  Emotion.SURPRISED,
  Emotion.SLEEPY,
  Emotion.WINK,
  Emotion.LOVE,
  Emotion.DIZZY,
  Emotion.DEAD,
  Emotion.NEUTRAL,
];

async function sleep(ms: number): Promise<void> {
  return new Promise((r) => setTimeout(r, ms));
}

async function main(): Promise<void> {
  const hw = new HardwareService({ path, baudRate, heartbeatIntervalMs: 1000 });
  hw.on('log', (line) => console.log(`[firmware] ${line}`));
  hw.on('error', (err) => console.error(`[firmware error] ${err.message}`));

  console.log(`→ opening ${path} @ ${baudRate} baud`);
  await hw.connect();

  try {
    const rtt = await hw.ping(Buffer.from('hello'));
    console.log(`← pong (rtt ${rtt.toFixed(1)} ms)`);
  } catch (err) {
    console.warn(`ping failed: ${(err as Error).message}`);
  }

  for (const emotion of EMOTION_SEQUENCE) {
    console.log(`→ emotion ${Emotion[emotion]}`);
    hw.sendEmotion(emotion);
    await sleep(1200);
  }

  await hw.disconnect();
  console.log('done.');
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});