import type { NextConfig } from "next";

// Read at runtime, not baked in. The rewrites below run in the Next server
// process, never in the browser, so this never needed the NEXT_PUBLIC_ prefix
// that pins a value into the image at build time. NEXT_PUBLIC_API_URL is still
// honoured so an existing deployment passing it keeps working.
const apiUrl = process.env.API_URL ?? process.env.NEXT_PUBLIC_API_URL ?? "http://localhost:8080";

const nextConfig: NextConfig = {
    output: "standalone",
    async redirects() {
        return [
            {
                // The API keys page briefly lived at /api-keys, which every
                // raw-prefix proxy in front of this app captures with its /api
                // rule — nginx's `location /api` matches /api-keys, so the
                // request reached the Go server and 404'd. The page is at
                // /tokens now precisely because that cannot happen to it.
                source: "/api-keys",
                destination: "/tokens",
                permanent: true,
            },
        ];
    },
    async rewrites() {
        return [
            {
                source: "/api/:path*",
                destination: `${apiUrl}/api/:path*`,
            },
            {
                source: "/auth/:path*",
                destination: `${apiUrl}/auth/:path*`,
            },
            {
                source: "/install",
                destination: `${apiUrl}/install`,
            },
            {
                source: "/install.ps1",
                destination: `${apiUrl}/install.ps1`,
            },
            {
                source: "/update",
                destination: `${apiUrl}/update`,
            },
            {
                source: "/update.ps1",
                destination: `${apiUrl}/update.ps1`,
            },
            {
                // The public status page refreshes itself in the browser, so
                // the public prefix has to be proxied the same way /api is.
                source: "/public/:path*",
                destination: `${apiUrl}/public/:path*`,
            },
        ];
    },
};

export default nextConfig;