/**
 * Cloud Function Builder
 * Copies pre-inlined cloud function files from cloud-functions/ to cloud-functions/.build/
 * The vXxx.js files already have all shared code inlined - they are ready to deploy.
 */
import { readFile, writeFile, mkdir } from 'node:fs/promises';
import { fileURLToPath } from 'node:url';
import { dirname, resolve } from 'node:path';

const __dirname = dirname(fileURLToPath(import.meta.url));
const cloudFunctionsDir = resolve(__dirname, '..', 'cloud-functions');
const outputDir = resolve(cloudFunctionsDir, '.build');

const CLOUD_FUNCTIONS = [
  'vContext.js', 'vDomesticVoc.js', 'vSync.js', 'vCompetitor.js',
  'vListing.js', 'vListingJob.js', 'vAnalysis.js', 'vActions.js',
  'vKnowledge.js', 'vAI.js', 'vUpstream.js',
];

async function main() {
  console.log('Building self-contained cloud functions...\n');
  await mkdir(outputDir, { recursive: true });

  for (const filename of CLOUD_FUNCTIONS) {
    const sourcePath = resolve(cloudFunctionsDir, filename);
    const outPath = resolve(outputDir, filename);
    const code = await readFile(sourcePath, 'utf8');
    await writeFile(outPath, code, 'utf8');
    console.log(`  ✓ ${filename} (${(code.length / 1024).toFixed(0)}KB)`);
  }

  console.log(`\nOutput: ${outputDir}`);
}

main().catch((error) => {
  console.error('Build failed:', error);
  process.exitCode = 1;
});