/**
 * Renders a badge and prints it, showing everything on the way through.
 *
 * For working out why a printer will not accept a job, without going through the
 * kiosk or the admin console. Run inside the container:
 *
 *   docker compose exec visitor-signin node scripts/print-test.mjs
 *   docker compose exec visitor-signin node scripts/print-test.mjs --label 62x100
 *   docker compose exec visitor-signin node scripts/print-test.mjs --dry
 *
 * Options:
 *   --site N       which site to use (default: the first one)
 *   --label ID     override the roll id sent to the printer, without saving it
 *   --rotate DEG   override the rotation, without saving it
 *   --dry          render only, do not print
 */
import fs from 'node:fs';
import { execFileSync } from 'node:child_process';
import db from '../src/db.js';
import config from '../src/config.js';
import * as printer from '../src/printer.js';

function arg(name, fallback = null) {
  const i = process.argv.indexOf(`--${name}`);
  return i > -1 && process.argv[i + 1] && !process.argv[i + 1].startsWith('--')
    ? process.argv[i + 1]
    : fallback;
}
const has = (name) => process.argv.includes(`--${name}`);

const siteId = Number(arg('site', 0));
const site = siteId
  ? db.prepare('SELECT * FROM sites WHERE id = ?').get(siteId)
  : db.prepare('SELECT * FROM sites ORDER BY id LIMIT 1').get();

if (!site) {
  console.error('No sites exist yet.');
  process.exit(1);
}

if (arg('label')) site.printer_label = arg('label');
if (arg('rotate')) site.printer_rotate = Number(arg('rotate'));

const label = printer.labelFor(site);
const target = `tcp://${site.printer_host}:${site.printer_port || 9100}`;

console.log('');
console.log(`  site            ${site.name}`);
console.log(`  printer         ${site.printer_model || 'QL-820NWB'} at ${target}`);
console.log(`  server printing ${site.printer_enabled ? 'on' : 'OFF — the kiosk would print instead'}`);
console.log(`  badge           ${site.badge_width_mm} x ${site.badge_height_mm} mm, rotate ${site.printer_rotate || 0}`);
console.log(`  roll setting    ${site.printer_label || '(unset)'}  ->  --label ${label}`);
console.log(`  red             requested ${Boolean(site.badge_accent)}, will print ${printer.accentWillPrintRed(site)}`);

const png = await printer.renderBadgePng(printer.sampleVisit(site), site);
const file = '/tmp/print-test.png';
fs.writeFileSync(file, png);
console.log(`  rendered        ${png.readUInt32BE(16)} x ${png.readUInt32BE(20)} dots -> ${file}`);

if (!site.printer_host) {
  console.error('\n  No printer address set for this site. Set one in Admin -> Sites -> Edit.');
  process.exit(1);
}

if (has('dry')) {
  console.log('\n  --dry given, so nothing was sent.\n');
  process.exit(0);
}

const args = [
  '--backend', 'network',
  '--model', site.printer_model || 'QL-820NWB',
  '--printer', target,
  'print',
  '--label', label,
];
// Required on black/red tape even when the badge is entirely black.
if (label === '62red') args.push('--red');
args.push(file);

console.log('');
console.log(`  running: ${config.printing.command} ${args.join(' ')}`);
console.log('');

try {
  const out = execFileSync(config.printing.command, args, {
    encoding: 'utf8',
    stdio: ['ignore', 'pipe', 'pipe'],
    timeout: config.printing.timeoutMs,
  });
  console.log(out.trim() || '  (no output)');
  console.log('\n  Sent. If nothing came out, the printer rejected it silently — check its display.\n');
} catch (err) {
  console.error('  FAILED\n');
  console.error(`${err.stdout || ''}${err.stderr || ''}`.trim() || err.message);
  console.error('');
  console.error('  Roll ids this printer understands:');
  console.error('    62       62 mm continuous, black only');
  console.error('    62red    62 mm continuous, black and red (DK-22251)');
  console.error('    62x100   62 x 100 mm DIE-CUT (pre-cut labels, not a continuous roll)');
  console.error('    62x29    62 x 29 mm die-cut');
  console.error('');
  console.error('  A continuous roll sent a die-cut id, or the reverse, is refused as a wrong roll.');
  console.error('  Try:  node scripts/print-test.mjs --label 62x100');
  console.error('');
  process.exit(1);
}