#!/usr/bin/env node
'use strict';
/**
 * Generates a new BridgeSwarm extension ID pair and updates:
 *   - extension/manifest.json (Chrome key + gecko id)
 *   - extension/manifest_firefox.json (gecko id only; no key)
 *   - com.bridgeswarm.json (allowed_origins / allowed_extensions)
 *
 * Also prints the IDs so installers/docs can be synced.
 * Do NOT reuse holesail-browser's Chrome key/ID — they must stay unique.
 */
const crypto = require('crypto');
const fs = require('fs');
const path = require('path');

const repoRoot = path.join(__dirname, '..');
const manifestPath = path.join(repoRoot, 'extension', 'manifest.json');
const manifestFirefoxPath = path.join(repoRoot, 'extension', 'manifest_firefox.json');
const nativeManifestPath = path.join(repoRoot, 'com.bridgeswarm.json');

const { publicKey } = crypto.generateKeyPairSync('rsa', {
  modulusLength: 2048,
  publicKeyEncoding: { type: 'spki', format: 'der' },
  privateKeyEncoding: { type: 'pkcs8', format: 'der' },
});

// Chrome extension ID: first 16 bytes of SHA256(publicKey), each nibble → a–p
const hash = crypto.createHash('sha256').update(publicKey).digest();
const chromeId = Array.from(hash.slice(0, 16))
  .map((b) => String.fromCharCode(97 + (b >> 4)) + String.fromCharCode(97 + (b & 0x0f)))
  .join('');

const firefoxId = 'bridgeswarm-' + crypto.randomBytes(8).toString('hex') + '@example.org';
const keyBase64 = publicKey.toString('base64');

const manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf8'));
manifest.key = keyBase64;
if (manifest.browser_specific_settings?.gecko) {
  manifest.browser_specific_settings.gecko.id = firefoxId;
}
fs.writeFileSync(manifestPath, JSON.stringify(manifest, null, 2) + '\n');

// Firefox manifest: same as Chrome but without the Chrome-only "key"
if (fs.existsSync(manifestFirefoxPath)) {
  const manifestFx = JSON.parse(fs.readFileSync(manifestFirefoxPath, 'utf8'));
  if (manifestFx.browser_specific_settings?.gecko) {
    manifestFx.browser_specific_settings.gecko.id = firefoxId;
  }
  delete manifestFx.key;
  fs.writeFileSync(manifestFirefoxPath, JSON.stringify(manifestFx, null, 2) + '\n');
} else {
  const fx = { ...manifest };
  delete fx.key;
  fs.writeFileSync(manifestFirefoxPath, JSON.stringify(fx, null, 2) + '\n');
}

const nativeManifest = JSON.parse(fs.readFileSync(nativeManifestPath, 'utf8'));
nativeManifest.allowed_origins = ['chrome-extension://' + chromeId + '/'];
nativeManifest.allowed_extensions = [firefoxId];
fs.writeFileSync(nativeManifestPath, JSON.stringify(nativeManifest, null, 2) + '\n');

console.log('Generated extension ID:', chromeId, '(' + firefoxId + ')');
console.log('CHROME_EXT_ID=' + chromeId);
console.log('FIREFOX_EXT_ID=' + firefoxId);