"use client";

import React, { useState, useEffect } from 'react';
import Link from 'next/link';
import { useRouter } from 'next/navigation';
import { Search, MapPin, Briefcase, TrendingUp, Loader2, ArrowRight } from 'lucide-react';
import { CATEGORIES, Business, BlogPost } from '../types';
import BusinessCard from '../components/BusinessCard';
import { useUser } from '../components/UserProvider';

const HomePage = () => {
  const router = useRouter();
  const { settings } = useUser();
  const [searchTerm, setSearchTerm] = useState('');
  const [featuredBusinesses, setFeaturedBusinesses] = useState<Business[]>([]);
  const [posts, setPosts] = useState<BlogPost[]>([]);
  const [loading, setLoading] = useState(true);
  const [loadingPosts, setLoadingPosts] = useState(true);

  useEffect(() => {
    const fetchFeatured = async () => {
      try {
        const res = await fetch('/api/businesses?featured=true');
        const data = await res.json();
        if (Array.isArray(data)) {
          setFeaturedBusinesses(data.slice(0, 4)); // Show top 4
        }
      } catch (error) {
        console.error('Error fetching featured businesses:', error);
      } finally {
        setLoading(false);
      }
    };
    fetchFeatured();

    const fetchPosts = async () => {
      try {
        const res = await fetch('/api/blog');
        const data = await res.json();
        if (Array.isArray(data)) {
          setPosts(data);
        }
      } catch (error) {
        console.error('Error fetching blog posts:', error);
      } finally {
        setLoadingPosts(false);
      }
    };
    fetchPosts();
  }, []);

  const handleSearch = (e: React.FormEvent) => {
    e.preventDefault();
    router.push(`/annuaire?q=${searchTerm}`);
  };

  return (
    <div>
      {/* Hero Section */}
      <div className="relative bg-dark-900 overflow-hidden">
        <div className="absolute inset-0 opacity-40">
          <img src="https://images.unsplash.com/photo-1522071820081-009f0129c71c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1740&q=80" className="w-full h-full object-cover" alt="African entrepreneurs team" />
        </div>
        <div className="relative max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-24 lg:py-32">
          <h1 className="text-4xl md:text-6xl font-serif font-bold text-white mb-6 tracking-tight">
            Boostez votre visibilité dans <br />
            <span className="text-brand-500">l'écosystème africain</span>
          </h1>
          <p className="text-xl text-gray-300 mb-8 max-w-2xl">
            L'annuaire 2.0 qui connecte les talents, les entrepreneurs et les entreprises de la diaspora et du continent.
          </p>

          <form onSubmit={handleSearch} className="max-w-3xl bg-white p-2 rounded-lg shadow-xl flex flex-col md:flex-row gap-2">
            <div className="flex-1 relative">
              <Search className="absolute left-3 top-3 text-gray-400 w-5 h-5" />
              <input
                type="text"
                placeholder="Que recherchez-vous ? (ex: Développeur, Traiteur...)"
                className="w-full pl-10 pr-4 py-3 rounded-md focus:outline-none text-gray-900"
                value={searchTerm}
                onChange={(e) => setSearchTerm(e.target.value)}
              />
            </div>
            <div className="md:w-1/3 relative border-t md:border-t-0 md:border-l border-gray-200">
              <MapPin className="absolute left-3 top-3 text-gray-400 w-5 h-5" />
              <input type="text" placeholder="Localisation (ex: Abidjan)" className="w-full pl-10 pr-4 py-3 rounded-md focus:outline-none text-gray-900" />
            </div>
            <button type="submit" className="bg-brand-600 text-white px-8 py-3 rounded-md font-semibold hover:bg-brand-700 transition-colors">
              Rechercher
            </button>
          </form>
        </div>
      </div>

      {/* Featured Categories */}
      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-16">
        <h2 className="text-3xl font-bold text-gray-900 mb-8 font-serif">Secteurs en vedette</h2>
        <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
          {(settings?.homeCategories || CATEGORIES.slice(0, 4)).map((cat: string, idx: number) => (
            <Link 
              key={idx} 
              href={`/annuaire?category=${encodeURIComponent(cat)}`}
              className="group cursor-pointer bg-white p-6 rounded-xl border border-gray-100 shadow-sm hover:shadow-md hover:border-brand-200 transition-all text-center"
            >
              <div className="w-12 h-12 bg-brand-50 text-brand-600 rounded-full flex items-center justify-center mx-auto mb-4 group-hover:bg-brand-600 group-hover:text-white transition-colors">
                <Briefcase className="w-6 h-6" />
              </div>
              <h3 className="font-semibold text-gray-900">{cat}</h3>
            </Link>
          ))}
        </div>
      </div>

      {/* Featured Businesses */}
      <div className="bg-gray-50 py-16">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="flex justify-between items-end mb-8">
            <div>
              <h2 className="text-3xl font-bold text-gray-900 font-serif">Entreprises à la une</h2>
              <p className="text-gray-500 mt-2">Découvrez les pépites de notre communauté.</p>
            </div>
            <Link href="/annuaire" className="text-brand-600 font-medium hover:text-brand-700 flex items-center">
              Voir tout l'annuaire <TrendingUp className="w-4 h-4 ml-1" />
            </Link>
          </div>

          {loading ? (
            <div className="flex justify-center py-12">
              <Loader2 className="w-10 h-10 text-brand-600 animate-spin" />
            </div>
          ) : (
            <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
              {featuredBusinesses.map(biz => (
                <BusinessCard key={biz.id} business={biz} />
              ))}
            </div>
          )}
        </div>
      </div>

      {/* Blog Section */}
      {settings?.homeBlogShow !== false && (
        <div className="py-16">
          <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
            <div className="flex justify-between items-end mb-8">
              <div>
                <h2 className="text-3xl font-bold text-gray-900 font-serif">{settings?.homeBlogTitle || "Derniers Articles"}</h2>
                <p className="text-gray-500 mt-2">{settings?.homeBlogSubtitle || "Toutes les actualités de l'entrepreneuriat africain."}</p>
              </div>
              <Link href="/blog" className="text-brand-600 font-medium hover:text-brand-700 flex items-center">
                Voir tout le blog <ArrowRight className="w-4 h-4 ml-1" />
              </Link>
            </div>

            {loadingPosts ? (
              <div className="flex justify-center py-12">
                <Loader2 className="w-10 h-10 text-brand-600 animate-spin" />
              </div>
            ) : (
              <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
                {posts
                  .filter(post => {
                    if (settings?.homeBlogSelection === 'manual') {
                      return settings.homeBlogIds?.includes(post.id);
                    }
                    if (settings?.homeBlogSelection === 'category') {
                      return post.tags?.some((tag: string) => settings.homeBlogCategories?.includes(tag));
                    }
                    return true;
                  })
                  .slice(0, settings?.homeBlogCount || 3)
                  .map(post => (
                    <Link key={post.id} href={`/blog/${post.slug || post.id}`} className="group bg-white rounded-xl shadow-sm border border-gray-100 overflow-hidden hover:shadow-md transition-all">
                      <div className="h-48 overflow-hidden">
                        <img src={post.imageUrl} alt={post.title} className="w-full h-full object-cover group-hover:scale-105 transition-transform duration-500" />
                      </div>
                      <div className="p-6">
                        <h3 className="text-xl font-bold text-gray-900 mb-2 line-clamp-2 group-hover:text-brand-600 transition-colors">{post.title}</h3>
                        <p className="text-gray-500 text-sm line-clamp-3 mb-4">{post.excerpt}</p>
                        <div className="flex items-center justify-between mt-auto pt-4 border-t border-gray-50">
                          <span className="text-xs font-medium text-gray-400">{new Date(post.date).toLocaleDateString('fr-FR')}</span>
                          <span className="text-brand-600 font-bold text-xs">Lire la suite →</span>
                        </div>
                      </div>
                    </Link>
                  ))}
              </div>
            )}
          </div>
        </div>
      )}
    </div>
  );
};

export default HomePage;
