#!/usr/bin/env node
/**
 * dist-desktop/updates → latest.json (Tauri updater v2)
 *
 * Usage:
 *   node scripts/generate-desktop-latest-json.mjs \
 *     --version 0.1.0 \
 *     --dir dist-desktop/updates \
 *     --base-url https://exdev.co.kr/desktop/updates \
 *     --notes "Release notes"
 */
import fs from 'node:fs';
import path from 'node:path';

function arg(name, fallback) {
  const i = process.argv.indexOf(name);
  return i >= 0 && process.argv[i + 1] ? process.argv[i + 1] : fallback;
}

const version = arg('--version', '0.1.0');
const dir = path.resolve(arg('--dir', 'dist-desktop/updates'));
const baseUrl = (arg('--base-url', 'https://exdev.co.kr/desktop/updates')).replace(/\/$/, '');
const notes = arg('--notes', `GoldenChart Desktop ${version}`);

if (!fs.existsSync(dir)) {
  console.error('Directory not found:', dir);
  process.exit(1);
}

const files = fs.readdirSync(dir);

/** @type {Record<string, { url: string; signature: string }>} */
const platforms = {};

function addPlatform(platformKey, bundleName) {
  const bundlePath = path.join(dir, bundleName);
  if (!fs.existsSync(bundlePath)) return;
  const sigPath = `${bundlePath}.sig`;
  let signature = '';
  if (fs.existsSync(sigPath)) {
    signature = fs.readFileSync(sigPath, 'utf8').trim();
  } else {
    console.warn(`[warn] missing signature: ${sigPath}`);
    return;
  }
  platforms[platformKey] = {
    url: `${baseUrl}/${encodeURIComponent(bundleName)}`,
    signature,
  };
}

for (const f of files) {
  if (f.endsWith('.sig')) continue;
  const lower = f.toLowerCase();
  if (lower.includes('aarch64') && (lower.endsWith('.tar.gz') || lower.endsWith('.app.tar.gz'))) {
    addPlatform('darwin-aarch64', f);
  } else if ((lower.includes('x64') || lower.includes('x86_64')) && lower.endsWith('.tar.gz')) {
    addPlatform('darwin-x86_64', f);
  } else if (lower.includes('aarch64') && lower.endsWith('.app.tar.gz')) {
    addPlatform('darwin-aarch64', f);
  } else if (lower.endsWith('.nsis.zip') || (lower.includes('setup') && lower.endsWith('.zip'))) {
    addPlatform('windows-x86_64', f);
  } else if (lower.endsWith('.app.tar.gz')) {
    // universal mac fallback
    if (!platforms['darwin-aarch64']) addPlatform('darwin-aarch64', f);
  }
}

const manifest = {
  version,
  notes,
  pub_date: new Date().toISOString(),
  platforms,
};

const outPath = path.join(dir, 'latest.json');
fs.writeFileSync(outPath, `${JSON.stringify(manifest, null, 2)}\n`);
console.log('Wrote', outPath);
console.log('Platforms:', Object.keys(platforms).join(', ') || '(none — sign updater bundles first)');

if (Object.keys(platforms).length === 0) {
  process.exit(2);
}