/** @type {(phase: string) => import('next').NextConfig} */
export default function () {
  const base = {
    basePath: '/link',
    poweredByHeader: false,
    transpilePackages: [
      '@link-stack/ui',
      '@link-stack/bridge-common',
      '@link-stack/bridge-ui',
      'mui-chips-input',
    ],
    async headers() {
      return [
        {
          source: '/((?!zammad).*)',
          headers: [
            { key: 'Strict-Transport-Security', value: 'max-age=63072000; includeSubDomains; preload' },
            { key: 'X-Frame-Options',          value: 'SAMEORIGIN' },
            { key: 'X-Content-Type-Options',   value: 'nosniff' },
          ],
        },
      ];
    },
  };

  /** dev-only extras */
  if (process.env.NODE_ENV === 'development') {
    return {
      ...base,
      experimental: {
        ...(base.experimental ?? {}),
        serverActions: {
          allowedOrigins: ['localhost:8001'],
          allowedForwardedHosts: ['localhost'],
        },
      },
    };
  }

  return base;
}