import type { NextConfig } from 'next';
import { existsSync } from 'node:fs';
import path from 'node:path';

// Monorepo: the single `.env` lives at the repository root; Next only reads the app directory.
for (const candidate of [path.resolve(process.cwd(), '../../.env'), path.resolve(process.cwd(), '.env')]) {
  if (existsSync(candidate)) {
    try {
      process.loadEnvFile(candidate);
    } catch {
      /* ignore malformed env */
    }
  }
}

const nextConfig: NextConfig = {
  reactStrictMode: true,
  poweredByHeader: false,
  agentRules: false,
  // Workspace packages are consumed as TypeScript sources.
  transpilePackages: ['@rareindex/shared', '@rareindex/database', '@rareindex/taxonomy', '@rareindex/connectors', '@rareindex/ai', '@rareindex/notify'],
  serverExternalPackages: ['postgres', 'pino', 'cheerio', 'pg-boss', '@anthropic-ai/sdk', 'openai'],
  // Public API: /api/v1/* is proxied to the Fastify service (apps/api) so one public host serves web + API.
  async rewrites() {
    const api = process.env.RI_API_URL ?? `http://127.0.0.1:${process.env.API_PORT ?? 8211}`;
    return [{ source: '/api/v1/:path*', destination: `${api}/v1/:path*` }];
  },
  images: {
    remotePatterns: [{ protocol: 'https', hostname: '**' }],
    formats: ['image/avif', 'image/webp'],
  },
  // Static pages query a large database; give the prerender workers room (default 60 s).
  staticPageGenerationTimeout: 240,
  experimental: {
    optimizePackageImports: ['lucide-react'],
    // The image cache core is shared with the worker (workers/image-processing/core.ts) via a relative re-export.
    externalDir: true,
    // Workspace packages use NodeNext-style `./file.js` imports that resolve to .ts sources.
    // Turbopack does not rewrite these outside the app root, so the app is built with webpack
    // (`next dev/build --webpack`) where extensionAlias handles the mapping.
    extensionAlias: { '.js': ['.ts', '.tsx', '.js'], '.mjs': ['.mts', '.mjs'] },
  },
  outputFileTracingRoot: path.resolve(__dirname, '../..'),
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: [
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
          { key: 'X-Frame-Options', value: 'SAMEORIGIN' },
          { key: 'Permissions-Policy', value: 'camera=(self), microphone=(), geolocation=()' },
        ],
      },
    ];
  },
};

export default nextConfig;