'use strict';

/**
 * Launcher for the `node.script` object — the same trick as bin/apex7-scale.js.
 *
 * The device logic is TypeScript (`src/max/device.ts`); this file stays plain
 * CommonJS because Node for Max runs it on a Node version we do not control,
 * with no loader and no build step of its own.
 *
 * `max-api` is required *here*, in the folder Node for Max resolves modules
 * from, and handed to the compiled module — which keeps that module importable
 * (and testable) outside of Max.
 */

const fs = require('fs');
const path = require('path');

const Max = require('max-api');

const compiled = path.join(__dirname, '..', 'dist', 'src', 'max', 'device.js');

if (!fs.existsSync(compiled)) {
  Max.post(
    'scale: not built yet — run `npm install` (or `npm run build`) in ' +
      path.join(__dirname, '..'),
    Max.POST_LEVELS.ERROR
  );
} else {
  const device = require(compiled).start(Max);

  // Node for Max kills this process when the device is deleted or the Live set
  // is closed. Blank the board on the way out so the Apex 7 goes back to its
  // SteelSeries GG profile rather than sitting on the last scale. Best effort:
  // if the signal never arrives, GameSense drops the effect ~15s after the
  // heartbeat stops anyway. The patcher's `closebang` covers device deletion,
  // which is the case Live does not signal.
  let leaving = false;
  const leave = () => {
    if (leaving) return;
    leaving = true;
    device
      .shutdown()
      .catch(() => {})
      .then(() => process.exit(0));
  };
  process.on('SIGTERM', leave);
  process.on('SIGINT', leave);
}