import { defineConfig, type Plugin } from "vite";
import { cloudflare } from "@cloudflare/vite-plugin";
import { tanstackStart } from "@tanstack/react-start/plugin/vite";
import react from "@vitejs/plugin-react";
import tailwindcss from "@tailwindcss/vite";

// Dev-only: the cloudflare vite-plugin bridges outbound fetches (JWKS,
// OAuth metadata proxy, etc.) through node undici in the host process. If
// a pooled keep-alive socket gets RST'd while no listener is attached, the
// `'error'` emit is unhandled and tears down the whole dev server. Log
// enough to identify the offender and keep the server alive.
const devCrashGuard = (): Plugin => {
  let installed = false;
  const install = () => {
    if (installed) return;
    installed = true;
    process.on("uncaughtException", (err, origin) => {
      console.error(
        `[dev-crash-guard] uncaughtException (origin=${origin}):`,
        err,
      );
    });
    process.on("unhandledRejection", (reason, promise) => {
      console.error("[dev-crash-guard] unhandledRejection:", reason, promise);
    });
  };
  return {
    name: "dev-crash-guard",
    apply: "serve",
    configureServer: install,
  };
};

export default defineConfig({
  resolve: { tsconfigPaths: true },
  plugins: [
    devCrashGuard(),
    tailwindcss(),
    cloudflare({ viteEnvironment: { name: "ssr" }, inspectorPort: false }),
    tanstackStart(),
    react(),
  ],
});