import { Card } from "@heroui/react";
import { useEffect, useState } from "react";

interface GuodegangData {
  name: string;
  content: string;
}

interface Props {
  topic: string;
}

export default function Guodegang({ topic }: Props) {
  const [data, setData] = useState<GuodegangData | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const response = await fetch(
          `http://localhost:8080/guodegang/${encodeURIComponent(topic)}`,
        );
        if (!response.ok) {
          throw new Error("API Error");
        }
        const result = await response.json();
        setData(result.message);
        setError(null);
      } catch (error) {
        console.error("Failed to fetch data: ", error);
        setError("Failed to load data. Please try again.");
      } finally {
        setLoading(false);
      }
    };
    fetchData();
  }, [topic]);

  if (loading) {
    return (
      <div className="w-full p-4 sm:p-6 md:max-w-2xl lg:max-w-4xl mx-auto">
        <Card className="relative w-full max-w-2xl mx-auto bg-white shadow-xl rounded-2xl overflow-hidden border border-gray-100 p-8">
          <div className="text-center text-gray-600">Loading...</div>
        </Card>
      </div>
    );
  }

  if (error) {
    return (
      <div className="w-full p-4 sm:p-6 md:max-w-2xl lg:max-w-4xl mx-auto">
        <Card className="relative w-full max-w-2xl mx-auto bg-white shadow-xl rounded-2xl overflow-hidden border border-gray-100 p-8">
          <div className="text-center text-red-600">{error}</div>
        </Card>
      </div>
    );
  }

  return (
    <div className="w-full p-4 sm:p-6 md:max-w-2xl lg:max-w-4xl mx-auto">
      <Card className="relative w-full max-w-2xl mx-auto bg-white shadow-xl rounded-2xl overflow-hidden border border-gray-100">
        <div className="absolute upper-0 right-0 -mr-2 -mb-2 pointer-events-none select-none">
          <span className="text-[10rem] opacity-80 blur-none">🎤</span>
        </div>

        <div className="relative z-5">
          <div className="px-6 pt-6 pb-4">
            <Card.Title className="text-2xl font-bold text-gray-800 mb-2">
              {data!.name}
            </Card.Title>
            <div className="h-1 w-20 bg-gradient-to-r from-yellow-500 to-orange-500 rounded"></div>
          </div>

          <Card.Description className="px-6 pb-6">
            <p className="text-gray-700 leading-relaxed whitespace-pre-line">
              {data!.content}
            </p>
          </Card.Description>
        </div>
      </Card>
    </div>
  );
}