"use client";

import { Loader2 } from "lucide-react";
import { useRouter, useSearchParams } from "next/navigation";
import { Suspense, useEffect } from "react";
import GoogleLogo from "@/components/icons/google-logo";
import Logo from "@/components/icons/openrag-logo";
import { Button } from "@/components/ui/button";
import { useAuth } from "@/contexts/auth-context";

function LoginPageContent() {
  const { isLoading, isAuthenticated, isNoAuthMode, login } = useAuth();
  const router = useRouter();
  const searchParams = useSearchParams();

  const redirect = searchParams.get("redirect") || "/chat";

  // Redirect if already authenticated or in no-auth mode
  useEffect(() => {
    if (!isLoading && (isAuthenticated || isNoAuthMode)) {
      router.push(redirect);
    }
  }, [isLoading, isAuthenticated, isNoAuthMode, router, redirect]);

  if (isLoading) {
    return (
      <div className="min-h-screen flex items-center justify-center bg-background">
        <div className="flex flex-col items-center gap-4">
          <Loader2 className="h-8 w-8 animate-spin" />
          <p className="text-muted-foreground">Loading...</p>
        </div>
      </div>
    );
  }

  if (isAuthenticated || isNoAuthMode) {
    return null; // Will redirect in useEffect
  }

  return (
    <div className="min-h-dvh relative flex gap-4 flex-col items-center justify-center bg-card rounded-lg m-4">
      <div className="flex flex-col items-center justify-center gap-4 z-10 ">
        <Logo className="fill-primary" width={50} height={40} />
        <div className="flex flex-col items-center justify-center gap-16">
          <h1 className="text-2xl font-medium font-chivo">
            Welcome to OpenRAG
          </h1>
          <Button onClick={login} className="w-80 gap-1.5" size="lg">
            <GoogleLogo className="h-4 w-4" />
            Continue with Google
          </Button>
        </div>
      </div>
    </div>
  );
}

export default function LoginPage() {
  return (
    <Suspense
      fallback={
        <div className="min-h-screen flex items-center justify-center bg-background">
          <div className="flex flex-col items-center gap-4">
            <Loader2 className="h-8 w-8 animate-spin" />
            <p className="text-muted-foreground">Loading...</p>
          </div>
        </div>
      }
    >
      <LoginPageContent />
    </Suspense>
  );
}
