import { QueryClient, QueryClientProvider, useQueryClient } from "@tanstack/react-query";
import {
  Outlet,
  Link,
  createRootRouteWithContext,
  useRouter,
  HeadContent,
  Scripts,
} from "@tanstack/react-router";
import { useEffect, type ReactNode } from "react";

import appCss from "../styles.css?url";
import { reportLovableError } from "../lib/lovable-error-reporting";
import { Toaster } from "@/components/ui/sonner";
import { supabase } from "@/integrations/supabase/client";
import { PixelsLoader } from "@/components/PixelsLoader";

function NotFoundComponent() {
  return (
    <div className="flex min-h-screen items-center justify-center bg-background px-4">
      <div className="max-w-md text-center">
        <h1 className="text-7xl font-bold text-gradient-primary">404</h1>
        <h2 className="mt-4 text-xl font-semibold">Page not found</h2>
        <p className="mt-2 text-sm text-muted-foreground">
          The page you're looking for doesn't exist.
        </p>
        <Link to="/" className="mt-6 inline-flex rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:opacity-90">
          Go home
        </Link>
      </div>
    </div>
  );
}

function ErrorComponent({ error, reset }: { error: Error; reset: () => void }) {
  const router = useRouter();
  useEffect(() => { reportLovableError(error, { boundary: "tanstack_root_error_component" }); }, [error]);
  return (
    <div className="flex min-h-screen items-center justify-center bg-background px-4">
      <div className="max-w-md text-center">
        <h1 className="text-xl font-semibold">Something went wrong</h1>
        <p className="mt-2 text-sm text-muted-foreground">{error.message}</p>
        <div className="mt-6 flex justify-center gap-2">
          <button onClick={() => { router.invalidate(); reset(); }} className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:opacity-90">
            Try again
          </button>
          <a href="/" className="rounded-md border border-border bg-card px-4 py-2 text-sm font-medium hover:bg-muted">Go home</a>
        </div>
      </div>
    </div>
  );
}

export const Route = createRootRouteWithContext<{ queryClient: QueryClient }>()({
  head: () => ({
    meta: [
      { charSet: "utf-8" },
      { name: "viewport", content: "width=device-width, initial-scale=1" },
      { title: "Binary Options Mastery Course 2026" },
      { name: "description", content: "Master binary options trading from beginner to advanced. 6 modules, live trading examples, lifetime access. Enroll today." },
      { name: "author", content: "Binary Options Mastery" },
      { property: "og:title", content: "Binary Options Mastery Course 2026" },
      { property: "og:description", content: "Master binary options trading from beginner to advanced. 6 modules, live trading examples, lifetime access. Enroll today." },
      { property: "og:type", content: "website" },
      { name: "twitter:card", content: "summary_large_image" },
      { name: "twitter:title", content: "Binary Options Mastery Course 2026" },
      { name: "twitter:description", content: "Master binary options trading from beginner to advanced. 6 modules, live trading examples, lifetime access. Enroll today." },
      { property: "og:image", content: "https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/b4edb79d-2d9a-424e-8ce6-8fab4c446a67/id-preview-1010612b--ec81d6e5-a0bf-4c83-afc2-3654ec2e7128.lovable.app-1780586932546.png" },
      { name: "twitter:image", content: "https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/b4edb79d-2d9a-424e-8ce6-8fab4c446a67/id-preview-1010612b--ec81d6e5-a0bf-4c83-afc2-3654ec2e7128.lovable.app-1780586932546.png" },
    ],
    links: [
      { rel: "stylesheet", href: appCss },
      { rel: "preconnect", href: "https://fonts.googleapis.com" },
      { rel: "preconnect", href: "https://fonts.gstatic.com", crossOrigin: "" },
      { rel: "stylesheet", href: "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap" },
    ],
  }),
  shellComponent: RootShell,
  component: RootComponent,
  notFoundComponent: NotFoundComponent,
  errorComponent: ErrorComponent,
});

function RootShell({ children }: { children: ReactNode }) {
  return (
    <html lang="en">
      <head><HeadContent /></head>
      <body>{children}<Scripts /></body>
    </html>
  );
}

function RootComponent() {
  const { queryClient } = Route.useRouteContext();
  return (
    <QueryClientProvider client={queryClient}>
      <AuthListener />
      <PixelsLoader />
      <Outlet />
      <Toaster position="top-center" richColors />
    </QueryClientProvider>
  );
}

function AuthListener() {
  const router = useRouter();
  const queryClient = useQueryClient();
  useEffect(() => {
    const { data: { subscription } } = supabase.auth.onAuthStateChange((event) => {
      if (event !== "SIGNED_IN" && event !== "SIGNED_OUT" && event !== "USER_UPDATED") return;
      router.invalidate();
      if (event !== "SIGNED_OUT") queryClient.invalidateQueries();
    });
    return () => subscription.unsubscribe();
  }, [router, queryClient]);
  return null;
}