const fs = require('fs');
const path = require('path');
const esbuild = require('esbuild');

async function build() {
  console.log('Building host entry: src/index.ts -> lib/index.js...');
  await esbuild.build({
    entryPoints: [path.resolve(__dirname, 'src/index.ts')],
    outfile: path.resolve(__dirname, 'lib/index.js'),
    bundle: false,
    format: 'esm',
    platform: 'node',
    target: 'node18'
  });

  console.log('Building client bundle: src/client/index.ts -> lib/client.js...');
  const clientBuildResult = await esbuild.build({
    entryPoints: [path.resolve(__dirname, 'src/client/index.ts')],
    bundle: true,
    write: false,
    format: 'cjs',
    platform: 'browser',
    target: 'es2022',
    external: [
      'react',
      'react-dom',
      'react/jsx-runtime',
      '@deepseek-ai/cordis',
      '@deepseek-ai/dsh-client-store',
      '@deepseek-ai/dsh-client-ui-slots',
      '@deepseek-ai/dsh-client-ui-primitives',
      '@deepseek-ai/dsh-client-ui-dockkit'
    ]
  });

  const bundledCjs = clientBuildResult.outputFiles[0].text;

  // Wrap in window.__ModuleLoader__.load({ id: "dsh-plugin-model-enhancer", factory: (require) => { ... } })
  const wrappedClientCode = `window.__ModuleLoader__.load({
  id: "dsh-plugin-model-enhancer",
  factory: (require) => {
    var module = { exports: {} };
    var exports = module.exports;
${bundledCjs}
    return module.exports;
  }
});
`;

  fs.mkdirSync(path.resolve(__dirname, 'lib'), { recursive: true });
  fs.writeFileSync(path.resolve(__dirname, 'lib/client.js'), wrappedClientCode, 'utf8');
  console.log('Successfully generated lib/client.js (length: ' + wrappedClientCode.length + ')');
}

build().catch((err) => {
  console.error('Build failed:', err);
  process.exit(1);
});