const dotenv = require("dotenv");
const dotenvExpand = require("dotenv-expand");
dotenvExpand.expand(dotenv.config({ path: "../.env", quiet: true }));
const { withSentryConfig } = require("@sentry/nextjs");

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

// HTTP Security Headers
const nextConfig = {
  poweredByHeader: false,
  // Dev-only. Lets the dev server accept HMR/asset requests from a tunnel
  // hostname (ngrok/cloudflared), needed when testing the local UI through a
  // public tunnel or from an external device.
  // Comma-separated, e.g. NEXT_ALLOWED_DEV_ORIGINS=foo.ngrok-free.dev
  allowedDevOrigins: (process.env.NEXT_ALLOWED_DEV_ORIGINS || "")
    .split(",")
    .map((origin) => origin.trim())
    .filter(Boolean),
  // Use standalone only in production deployments, not for CI/testing
  ...(process.env.NODE_ENV === "production" &&
    !process.env.CI && {
      output: "standalone",
      outputFileTracingRoot: __dirname,
      // sharp 0.35 loads its native binary dynamically, so tracing misses it.
      outputFileTracingIncludes: {
        "**": ["./node_modules/.pnpm/@img+sharp-libvips-linuxmusl-*/**/*"],
      },
    }),
  // React Compiler is now stable in Next.js 16
  reactCompiler: true,
  turbopack: {
    root: __dirname,
  },
  async headers() {
    const headers = [
      {
        key: "X-Content-Type-Options",
        value: "nosniff",
      },
      {
        key: "Referrer-Policy",
        value: "strict-origin-when-cross-origin",
      },
    ];

    return [
      {
        source: "/(.*)",
        headers,
      },
    ];
  },
};

// Sentry configuration options
const sentryWebpackPluginOptions = {
  org: process.env.SENTRY_ORG,
  project: process.env.SENTRY_PROJECT,
  authToken: process.env.SENTRY_AUTH_TOKEN,
  silent: true, // Suppresses all logs
  hideSourceMaps: true, // Hides source maps from generated client bundles
  disableLogger: true, // Automatically tree-shake Sentry logger statements to reduce bundle size
  widenClientFileUpload: true, // Upload a larger set of source maps for prettier stack traces
};

// Export with Sentry only if configuration is available
const hasSentryBuildCredentials = Boolean(
  process.env.SENTRY_AUTH_TOKEN &&
    process.env.SENTRY_ORG &&
    process.env.SENTRY_PROJECT,
);

module.exports = hasSentryBuildCredentials
  ? withSentryConfig(nextConfig, sentryWebpackPluginOptions)
  : nextConfig;