import React, { useEffect, useMemo, useState } from 'react';
import { useParams, Link } from 'react-router-dom';
import { ArrowLeft, MapPin, Globe, Mail, Phone, CheckCircle, Star, Facebook, Linkedin, Instagram, Play, Share2, Send, Award, Quote } from 'lucide-react';
import { MOCK_BUSINESSES, MOCK_OFFERS } from '../services/mockData';
import { OfferType } from '../types';

const BusinessDetailPage = () => {
  const { id } = useParams();
  const business = MOCK_BUSINESSES.find(b => b.id === id);
  
  const [contactForm, setContactForm] = useState({
      name: '',
      email: '',
      message: ''
  });
  const [formStatus, setFormStatus] = useState<'idle' | 'sending' | 'success'>('idle');
  
  const businessOffers = useMemo(() => {
    return MOCK_OFFERS.filter(o => o.businessId === id && o.active);
  }, [id]);

  useEffect(() => {
    window.scrollTo(0, 0);
  }, [id]);

  if (!business) {
    return (
      <div className="min-h-[60vh] flex flex-col items-center justify-center">
        <h2 className="text-2xl font-bold text-gray-900 mb-4">Entreprise introuvable</h2>
        <Link to="/directory" className="text-brand-600 hover:text-brand-700 font-medium flex items-center">
          <ArrowLeft className="w-4 h-4 mr-2" /> Retour à l'annuaire
        </Link>
      </div>
    );
  }

  // Helper to get YouTube embed URL
  const getEmbedUrl = (url: string) => {
    const regExp = /^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|&v=)([^#&?]*).*/;
    const match = url.match(regExp);
    return (match && match[2].length === 11) ? `https://www.youtube.com/embed/${match[2]}` : null;
  };
  
  const videoEmbedUrl = business.videoUrl ? getEmbedUrl(business.videoUrl) : null;

  const handleContactSubmit = (e: React.FormEvent) => {
      e.preventDefault();
      setFormStatus('sending');
      
      // Simulate API call
      setTimeout(() => {
          setFormStatus('success');
          setContactForm({ name: '', email: '', message: '' });
          
          // Reset status after 3 seconds
          setTimeout(() => setFormStatus('idle'), 3000);
      }, 1500);
  };

  return (
    <div className="bg-gray-50 min-h-screen pb-12">
      {/* Header Banner */}
      <div className="h-48 md:h-64 bg-gradient-to-r from-gray-900 to-gray-800 relative overflow-hidden">
        <div className="absolute inset-0 opacity-20 bg-[url('https://www.transparenttextures.com/patterns/cubes.png')]"></div>
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-full flex flex-col justify-between py-6">
           <Link to="/directory" className="inline-flex items-center text-white/80 hover:text-white transition-colors w-fit">
              <ArrowLeft className="w-4 h-4 mr-2" /> Retour
           </Link>
        </div>
      </div>

      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 -mt-20 relative z-10">
        <div className="bg-white rounded-xl shadow-lg border border-gray-100 overflow-hidden">
            <div className="p-6 md:p-8">
                {/* Profile Header */}
                <div className="flex flex-col md:flex-row gap-6 items-start">
                    <div className="w-32 h-32 md:w-40 md:h-40 rounded-xl bg-white p-1 shadow-md -mt-16 md:-mt-24 border border-gray-100 flex-shrink-0 relative">
                        <img src={business.logoUrl} alt={business.name} className="w-full h-full object-cover rounded-lg bg-gray-50" />
                        {business.isFeatured && (
                            <div className="absolute -top-3 -right-3 bg-yellow-400 text-yellow-900 rounded-full p-2 shadow-md" title="Entrepreneur du Mois">
                                <Award className="w-6 h-6" />
                            </div>
                        )}
                    </div>
                    
                    <div className="flex-1 w-full">
                        <div className="flex flex-col md:flex-row justify-between items-start md:items-center gap-4">
                            <div>
                                <div className="flex items-center gap-2">
                                    <h1 className="text-3xl font-serif font-bold text-gray-900 flex items-center gap-2">
                                        {business.name}
                                    </h1>
                                    {business.verified && <CheckCircle className="w-6 h-6 text-blue-500" title="Entreprise Vérifiée" />}
                                </div>
                                <div className="text-brand-600 font-medium mt-1 uppercase tracking-wide text-sm">{business.category}</div>
                                {business.isFeatured && (
                                    <div className="inline-flex items-center px-2 py-1 rounded bg-yellow-100 text-yellow-800 text-xs font-bold mt-2">
                                        <Award className="w-3 h-3 mr-1" /> ENTREPRENEUR DU MOIS
                                    </div>
                                )}
                            </div>
                            <div className="flex gap-3">
                                <button className="inline-flex items-center px-4 py-2 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                                    <Share2 className="w-4 h-4 mr-2" /> Partager
                                </button>
                                <a href="#contact-form" className="inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-brand-600 hover:bg-brand-700">
                                    Contacter
                                </a>
                            </div>
                        </div>

                        <div className="flex flex-wrap gap-4 mt-6 text-sm text-gray-500 border-t border-gray-100 pt-4">
                            <div className="flex items-center">
                                <MapPin className="w-4 h-4 mr-1 text-gray-400" />
                                {business.location}
                            </div>
                            <div className="flex items-center">
                                <Star className="w-4 h-4 mr-1 text-yellow-400 fill-current" />
                                <span className="font-bold text-gray-700 mr-1">{business.rating}</span> 
                                ({business.viewCount} vues)
                            </div>
                            {business.tags.map(tag => (
                                <span key={tag} className="bg-gray-100 text-gray-600 px-2 py-1 rounded text-xs">#{tag}</span>
                            ))}
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div className="grid grid-cols-1 lg:grid-cols-3 gap-8 mt-8">
            {/* Left Column: Main Content */}
            <div className="lg:col-span-2 space-y-8">
                
                {/* Presentation */}
                <div className="bg-white rounded-xl shadow-sm border border-gray-100 p-6 md:p-8">
                    <h2 className="text-xl font-bold font-serif text-gray-900 mb-4">À propos</h2>
                    <p className="text-gray-600 leading-relaxed whitespace-pre-line">
                        {business.description}
                    </p>
                </div>

                {/* Founder Section (Specifically for Featured or if data exists) */}
                {(business.founderName || business.founderImageUrl) && (
                    <div className="bg-white rounded-xl shadow-sm border border-gray-100 p-6 md:p-8 overflow-hidden relative">
                         <div className="absolute top-0 right-0 p-4 opacity-10">
                            <Quote className="w-24 h-24 text-brand-500" />
                         </div>
                         <h2 className="text-xl font-bold font-serif text-gray-900 mb-6 relative z-10">Le Fondateur</h2>
                         <div className="flex flex-col sm:flex-row gap-6 items-center sm:items-start relative z-10">
                            {business.founderImageUrl && (
                                <img 
                                    src={business.founderImageUrl} 
                                    alt={business.founderName} 
                                    className="w-32 h-32 rounded-full object-cover border-4 border-gray-50 shadow-md"
                                />
                            )}
                            <div>
                                <h3 className="text-lg font-bold text-gray-900">{business.founderName}</h3>
                                <p className="text-brand-600 text-sm font-medium mb-3">CEO & Fondateur</p>
                                <p className="text-gray-600 italic">
                                    "Notre mission est d'apporter des solutions concrètes et adaptées aux réalités locales, tout en visant l'excellence internationale."
                                </p>
                                {business.keyMetric && (
                                    <div className="mt-4 inline-block bg-brand-50 text-brand-700 px-3 py-1 rounded-full text-xs font-bold">
                                        🚀 {business.keyMetric}
                                    </div>
                                )}
                            </div>
                         </div>
                    </div>
                )}

                {/* Video */}
                {videoEmbedUrl && (
                    <div className="bg-white rounded-xl shadow-sm border border-gray-100 p-6 md:p-8">
                        <h2 className="text-xl font-bold font-serif text-gray-900 mb-4 flex items-center">
                            <Play className="w-5 h-5 mr-2 text-brand-600" /> Présentation Vidéo
                        </h2>
                        <div className="aspect-w-16 aspect-h-9 bg-gray-100 rounded-lg overflow-hidden">
                            <iframe 
                                src={videoEmbedUrl} 
                                title={`Présentation de ${business.name}`}
                                allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
                                allowFullScreen
                                className="w-full h-64 md:h-96 rounded-lg"
                            ></iframe>
                        </div>
                    </div>
                )}

                {/* Offers */}
                {businessOffers.length > 0 && (
                    <div className="bg-white rounded-xl shadow-sm border border-gray-100 p-6 md:p-8">
                        <h2 className="text-xl font-bold font-serif text-gray-900 mb-6">Produits & Services</h2>
                        <div className="grid grid-cols-1 sm:grid-cols-2 gap-6">
                            {businessOffers.map(offer => (
                                <div key={offer.id} className="border border-gray-200 rounded-lg overflow-hidden hover:shadow-md transition-shadow">
                                    <div className="h-40 bg-gray-100 relative">
                                        <img src={offer.imageUrl} alt={offer.title} className="w-full h-full object-cover" />
                                        <span className={`absolute top-2 right-2 px-2 py-1 text-xs font-bold rounded uppercase ${offer.type === OfferType.PRODUCT ? 'bg-blue-100 text-blue-800' : 'bg-purple-100 text-purple-800'}`}>
                                            {offer.type === OfferType.PRODUCT ? 'Produit' : 'Service'}
                                        </span>
                                    </div>
                                    <div className="p-4">
                                        <h3 className="font-bold text-gray-900 line-clamp-1">{offer.title}</h3>
                                        <p className="text-brand-600 font-bold mt-1">
                                            {new Intl.NumberFormat('fr-FR').format(offer.price)} {offer.currency}
                                        </p>
                                        <button className="mt-3 w-full block text-center bg-gray-50 text-gray-700 py-2 rounded text-sm font-medium hover:bg-gray-100 transition-colors">
                                            Commander
                                        </button>
                                    </div>
                                </div>
                            ))}
                        </div>
                    </div>
                )}
            </div>

            {/* Right Column: Sidebar */}
            <div className="space-y-8">
                {/* Contact Card */}
                <div id="contact-form" className="bg-white rounded-xl shadow-sm border border-gray-100 p-6 sticky top-24">
                    <h3 className="text-lg font-bold text-gray-900 mb-4">Contact</h3>
                    
                    {/* Direct Info */}
                    <div className="space-y-4 mb-6">
                        <a href={`mailto:${business.contactEmail}`} className="flex items-center text-gray-600 hover:text-brand-600 transition-colors">
                            <div className="w-8 h-8 rounded-full bg-brand-50 flex items-center justify-center mr-3 text-brand-600 flex-shrink-0">
                                <Mail className="w-4 h-4" />
                            </div>
                            <span className="text-sm truncate">{business.contactEmail}</span>
                        </a>
                        {business.contactPhone && (
                            <a href={`tel:${business.contactPhone}`} className="flex items-center text-gray-600 hover:text-brand-600 transition-colors">
                                <div className="w-8 h-8 rounded-full bg-brand-50 flex items-center justify-center mr-3 text-brand-600 flex-shrink-0">
                                    <Phone className="w-4 h-4" />
                                </div>
                                <span className="text-sm">{business.contactPhone}</span>
                            </a>
                        )}
                        {business.socialLinks?.website && (
                             <a href={business.socialLinks.website} target="_blank" rel="noopener noreferrer" className="flex items-center text-gray-600 hover:text-brand-600 transition-colors">
                                <div className="w-8 h-8 rounded-full bg-brand-50 flex items-center justify-center mr-3 text-brand-600 flex-shrink-0">
                                    <Globe className="w-4 h-4" />
                                </div>
                                <span className="text-sm truncate">Site Web</span>
                            </a>
                        )}
                    </div>

                     {/* Contact Form */}
                    <div className="border-t border-gray-100 pt-6">
                        <h4 className="text-sm font-semibold text-gray-900 mb-3">Envoyer un message</h4>
                        {formStatus === 'success' ? (
                            <div className="bg-green-50 border border-green-200 text-green-700 px-4 py-3 rounded-md text-sm">
                                Message envoyé avec succès !
                            </div>
                        ) : (
                            <form onSubmit={handleContactSubmit} className="space-y-3">
                                <div>
                                    <input 
                                        type="text" 
                                        placeholder="Votre nom" 
                                        required
                                        className="w-full px-3 py-2 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-1 focus:ring-brand-500"
                                        value={contactForm.name}
                                        onChange={(e) => setContactForm({...contactForm, name: e.target.value})}
                                    />
                                </div>
                                <div>
                                    <input 
                                        type="email" 
                                        placeholder="Votre email" 
                                        required
                                        className="w-full px-3 py-2 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-1 focus:ring-brand-500"
                                        value={contactForm.email}
                                        onChange={(e) => setContactForm({...contactForm, email: e.target.value})}
                                    />
                                </div>
                                <div>
                                    <textarea 
                                        placeholder="Votre message..." 
                                        required
                                        rows={3}
                                        className="w-full px-3 py-2 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-1 focus:ring-brand-500 resize-none"
                                        value={contactForm.message}
                                        onChange={(e) => setContactForm({...contactForm, message: e.target.value})}
                                    />
                                </div>
                                <button 
                                    type="submit" 
                                    disabled={formStatus === 'sending'}
                                    className="w-full flex justify-center items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-gray-900 hover:bg-gray-800 focus:outline-none transition-colors disabled:opacity-70"
                                >
                                    {formStatus === 'sending' ? 'Envoi...' : <><Send className="w-3 h-3 mr-2" /> Envoyer</>}
                                </button>
                            </form>
                        )}
                    </div>

                    <div className="mt-6 pt-6 border-t border-gray-100">
                        <div className="flex justify-center space-x-6">
                            {business.socialLinks?.facebook && (
                                <a href={business.socialLinks.facebook} target="_blank" rel="noopener noreferrer" className="text-gray-400 hover:text-[#1877F2] transition-colors">
                                    <Facebook className="w-5 h-5" />
                                </a>
                            )}
                            {business.socialLinks?.linkedin && (
                                <a href={business.socialLinks.linkedin} target="_blank" rel="noopener noreferrer" className="text-gray-400 hover:text-[#0A66C2] transition-colors">
                                    <Linkedin className="w-5 h-5" />
                                </a>
                            )}
                            {business.socialLinks?.instagram && (
                                <a href={business.socialLinks.instagram} target="_blank" rel="noopener noreferrer" className="text-gray-400 hover:text-[#E4405F] transition-colors">
                                    <Instagram className="w-5 h-5" />
                                </a>
                            )}
                        </div>
                    </div>
                </div>

                {/* Similar Businesses (Mock) */}
                <div className="bg-white rounded-xl shadow-sm border border-gray-100 p-6">
                    <h3 className="text-lg font-bold text-gray-900 mb-4">Dans la même catégorie</h3>
                    <div className="space-y-4">
                        {MOCK_BUSINESSES
                            .filter(b => b.category === business.category && b.id !== business.id)
                            .slice(0, 3)
                            .map(similar => (
                                <Link key={similar.id} to={`/directory/${similar.id}`} className="flex items-center group">
                                    <div className="w-12 h-12 rounded bg-gray-100 overflow-hidden flex-shrink-0">
                                        <img src={similar.logoUrl} alt={similar.name} className="w-full h-full object-cover" />
                                    </div>
                                    <div className="ml-3 overflow-hidden">
                                        <p className="text-sm font-medium text-gray-900 truncate group-hover:text-brand-600 transition-colors">{similar.name}</p>
                                        <p className="text-xs text-gray-500 truncate">{similar.location}</p>
                                    </div>
                                </Link>
                            ))
                        }
                    </div>
                </div>
            </div>
        </div>
      </div>
    </div>
  );
};

export default BusinessDetailPage;