"use client";

import { useState, useEffect } from "react";
import axios from "axios";

// 1. Define the TypeScript interface for a News Article item
interface Article {
  id: number;
  title: string;
  body: string;
}

export default function NewsPage() {
  // 2. Setup state for data, loading, and error handling
  const [articles, setArticles] = useState<Article[]>([]);
  const [loading, setLoading] = useState<boolean>(true);
  const [error, setError] = useState<string | null>(null);

  // 3. Fetch data inside useEffect
  useEffect(() => {
    // Create an AbortController to cleanup on component unmount
    const controller = new AbortController();

    const fetchNews = async () => {
      try {
        setLoading(true);
        setError(null);

        // Fetch top 6 mock news articles using Axios
        const response = await axios.get<Article[]>(
          "https://jsonplaceholderrr.typicode.com/posts?_limit=6",
          { signal: controller.signal }
        );
        console.log(response.data);
        setArticles(response.data);
      } catch (err: unknown) {
        console.log("error", err);
        // Ignore errors caused by unmounting (aborted requests)
        if (axios.isCancel(err)) return;

        if (axios.isAxiosError(err)) {
          setError(err.message || "Failed to fetch news articles.");
        } else {
          setError("An unexpected error occurred.");
        }
      } finally {
        setLoading(false);
      }
    };

    fetchNews();

    // Cleanup function runs if the component unmounts
    return () => {
      controller.abort();
    };
  }, []); // Empty dependency array = runs ONCE when component mounts

  // 4. Render Loading State (DaisyUI Loading Spinner)
  if (loading) {
    return (
      <main className="min-h-screen bg-base-200 flex flex-col items-center justify-center p-8">
        <span className="loading loading-spinner loading-lg text-primary"></span>
        <p className="mt-4 text-base-content/70">Fetching latest news...</p>
      </main>
    );
  }

  // 5. Render Error State (DaisyUI Alert)
  if (error) {
    return (
      <main className="min-h-screen bg-base-200 p-8 flex justify-center items-center">
        <div className="alert alert-error max-w-md shadow-lg">
          <svg
            xmlns="http://www.w3.org/2000/svg"
            className="stroke-current shrink-0 h-6 w-6"
            fill="none"
            viewBox="0 0 24 24"
          >
            <path
              strokeLinecap="round"
              strokeLinejoin="round"
              strokeWidth="2"
              d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 9 0 0118 0z"
            />
          </svg>
          <span>{error}</span>
        </div>
      </main>
    );
  }

  // 6. Render Data on JSX (DaisyUI Card Grid)
  return (
    <main className="min-h-screen bg-base-200 p-8">
      <div className="max-w-6xl mx-auto space-y-8">
        {/* Header */}
        <header className="border-b border-base-300 pb-4">
          <h1 className="text-4xl font-extrabold text-base-content">
            Trending Headlines
          </h1>
          <p className="text-sm text-base-content/60 mt-1">
            Fetched via Axios + useEffect
          </p>
        </header>

        {/* Article Grid */}
        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
          {articles.map((article) => (
            <article
              key={article.id}
              className="card bg-base-100 shadow-xl border border-base-300 hover:shadow-2xl transition-shadow"
            >
              <div className="card-body">
                <div className="badge badge-primary badge-outline mb-2">
                  News #{article.id}
                </div>
                <h2 className="card-title text-base-content capitalize">
                  {article.title}
                </h2>
                <p className="text-sm text-base-content/70 line-clamp-3">
                  {article.body}
                </p>
                <div className="card-actions justify-end mt-4">
                  <button className="btn btn-sm btn-accent btn-outline">
                    Read Article
                  </button>
                </div>
              </div>
            </article>
          ))}
        </div>
      </div>
    </main>
  );
}