import { existsSync } from "node:fs";
import path from "node:path";

import type { NextConfig } from "next";

import dotenv from "dotenv";

const envCandidates = [
  path.resolve(process.cwd(), ".env"),
  path.resolve(process.cwd(), "../.env"),
  path.resolve(process.cwd(), "../../.env")
];

for (const candidate of envCandidates) {
  if (existsSync(candidate)) {
    dotenv.config({ path: candidate });
    break;
  }
}

const apiProxyTarget = process.env.INTERNAL_API_BASE_URL ?? "http://localhost:4000";

const nextConfig: NextConfig = {
  transpilePackages: ["@rental/shared"],
  async headers() {
    return [
      {
        source: "/((?!_next/static|_next/image|favicon.ico).*)",
        headers: [
          {
            key: "Cache-Control",
            value: "no-store, no-cache, must-revalidate, proxy-revalidate"
          },
          {
            key: "Pragma",
            value: "no-cache"
          },
          {
            key: "Expires",
            value: "0"
          }
        ]
      }
    ];
  },
  async rewrites() {
    return [
      {
        source: "/api/:path*",
        destination: `${apiProxyTarget}/api/:path*`
      }
    ];
  }
};

export default nextConfig;