#!/usr/bin/env node
import fs from 'fs';
import os from 'os';
import path from 'path';
import { fileURLToPath } from 'url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const projectRoot = path.resolve(__dirname, '..');
const outputDir = path.join(projectRoot, '.electron-build', 'ms-playwright');

function findBrowserCache() {
  const envPath = process.env.PLAYWRIGHT_BROWSERS_PATH;
  if (envPath && envPath !== '0' && fs.existsSync(envPath)) return envPath;

  const candidates = [
    path.join(os.homedir(), 'Library', 'Caches', 'ms-playwright'),
    path.join(os.homedir(), '.cache', 'ms-playwright'),
    path.join(process.env.LOCALAPPDATA || '', 'ms-playwright'),
  ].filter(Boolean);

  return candidates.find((candidate) => fs.existsSync(candidate)) || '';
}

function copyDirectoryContents(sourceDir, targetDir) {
  const entries = fs.readdirSync(sourceDir, { withFileTypes: true });
  for (const entry of entries) {
    const sourcePath = path.join(sourceDir, entry.name);
    const targetPath = path.join(targetDir, entry.name);
    if (entry.isDirectory()) {
      fs.cpSync(sourcePath, targetPath, { recursive: true, force: true });
    } else if (entry.isFile()) {
      fs.copyFileSync(sourcePath, targetPath);
    }
  }
}

fs.rmSync(outputDir, { recursive: true, force: true });
fs.mkdirSync(outputDir, { recursive: true });

const browserCache = findBrowserCache();
if (!browserCache) {
  console.log('[prepare-electron-browsers] No Playwright browser cache found. Packaging will continue without bundled browsers.');
  process.exit(0);
}

copyDirectoryContents(browserCache, outputDir);
console.log(`[prepare-electron-browsers] Copied browsers from ${browserCache} -> ${outputDir}`);