/** @type {import('next').NextConfig} */

const securityHeaders = [
  { key: 'Strict-Transport-Security', value: 'max-age=31536000; includeSubDomains' },
  { key: 'X-Content-Type-Options', value: 'nosniff' },
  { key: 'X-Frame-Options', value: 'DENY' },
  { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
  { key: 'Permissions-Policy', value: 'camera=(), microphone=(), geolocation=()' },
  {
    key: 'Content-Security-Policy',
    value: [
      "default-src 'self'",
      "script-src 'self' 'unsafe-inline'",
      "style-src 'self' 'unsafe-inline'",
      "img-src 'self' data: blob: https:",
      "font-src 'self' data:",
      "connect-src 'self' https: wss:",
      "frame-ancestors 'none'",
      "base-uri 'self'",
      "form-action 'self'",
      "object-src 'none'",
    ].join('; '),
  },
]
const apiOrigin = (process.env.API_INTERNAL_URL ?? process.env.API_URL ?? 'http://localhost:4000').replace(/\/api\/v1\/?$/, '')
const apiUrl = new URL(apiOrigin)
const ADMIN_BASE_PATH = '/admin'

function ensureAdminAssetPrefix(rawValue) {
  if (!rawValue) return undefined

  try {
    const url = new URL(rawValue)
    const pathname = url.pathname.replace(/\/$/, '')
    if (!pathname.endsWith(ADMIN_BASE_PATH)) {
      url.pathname = `${pathname}${ADMIN_BASE_PATH}`
    }
    return url.toString().replace(/\/$/, '')
  } catch {
    const trimmed = rawValue.replace(/\/$/, '')
    return trimmed.endsWith(ADMIN_BASE_PATH) ? trimmed : `${trimmed}${ADMIN_BASE_PATH}`
  }
}

// In Docker dev the admin app runs on port 3002 while the marketplace proxy
// serves it from port 3000. When ADMIN_ASSET_PREFIX is set, Next emits
// absolute chunk URLs so /admin pages load their JS/CSS and HMR directly from
// port 3002, bypassing the proxy (which can't upgrade WebSocket connections).
const assetPrefix = ensureAdminAssetPrefix(process.env.ADMIN_ASSET_PREFIX)

const nextConfig = {
  basePath: ADMIN_BASE_PATH,
  ...(assetPrefix ? { assetPrefix } : {}),
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: 'res.cloudinary.com',
      },
      {
        protocol: apiUrl.protocol.replace(':', ''),
        hostname: apiUrl.hostname,
        ...(apiUrl.port ? { port: apiUrl.port } : {}),
        pathname: '/storage/**',
      },
    ],
  },
  transpilePackages: ['@rentaldrivego/types'],
  async headers() {
    return [
      {
        source: '/:path*',
        headers: securityHeaders,
      },
    ]
  },
  async rewrites() {
    return [
      {
        source: '/api/:path*',
        destination: `${apiOrigin}/api/:path*`,
      },
    ]
  },
}

module.exports = nextConfig