// MangaVerse Dark - Main Script

class MangaApp {
    constructor() {
        this.currentPage = 1;
        this.chaptersPerPage = 12;
        this.init();
    }

    init() {
        this.loadTrending();
        this.loadPopularAdditions();
        this.loadNewChapters();
        this.loadRecommendedLists();
        this.loadBlogPosts();
        this.initializeCarousels();
        this.initializeFilters();
    }

    // API helper
    async fetchMangaData(endpoint, params = {}) {
        try {
            const queryString = new URLSearchParams(params).toString();
            const response = await fetch(`https://api.jikan.moe/v4/${endpoint}?${queryString}`);
            if (!response.ok) throw new Error('API request failed');
            return await response.json();
        } catch (error) {
            console.error('Error fetching manga data:', error);
            return { data: [] };
        }
    }

    // Trending Section - 2-row grid, landscape cards
    async loadTrending() {
        const container = document.getElementById('trending-grid');
        const data = await this.fetchMangaData('manga', { 
            order_by: 'popularity',
            sort: 'desc',
            limit: 6
        });

        if (!data.data || data.data.length === 0) {
            container.innerHTML = this.generateSkeletons(6);
            return;
        }

        container.innerHTML = data.data.map((manga, index) => `
            <a href="#manga/${manga.mal_id}" class="manga-card group relative rounded-xl overflow-hidden bg-gray-800 shadow-lg">
                <div class="aspect-manga-landscape relative">
                    <img src="${manga.images?.jpg?.large_image_url || 'http://static.photos/nature/320x240/' + (index + 1)}" 
                         alt="${manga.title}" 
                         class="w-full h-full object-cover transition-transform duration-300 group-hover:scale-110">
                    <div class="absolute inset-0 gradient-overlay"></div>
                    <div class="absolute bottom-0 left-0 right-0 p-4">
                        <span class="inline-block px-2 py-1 text-xs font-semibold bg-gray-700 rounded mb-2">
                            ${manga.type || 'Manga'}
                        </span>
                        <h3 class="font-bold text-sm line-clamp-2 group-hover:text-gray-300 transition-colors">
                            ${manga.title}
                        </h3>
                    </div>
                </div>
            </a>
        `).join('');
    }

    // Popular Additions - Horizontal scroll, portrait cards with metadata
    async loadPopularAdditions() {
        const container = document.getElementById('popular-carousel');
        const data = await this.fetchMangaData('manga', {
            order_by: 'score',
            sort: 'desc',
            limit: 8
        });

        if (!data.data || data.data.length === 0) {
            container.innerHTML = this.generateSkeletons(8, 'portrait');
            return;
        }

        container.innerHTML = data.data.map((manga, index) => `
            <a href="#manga/${manga.mal_id}" class="manga-card group flex-shrink-0 w-48 bg-gray-800 rounded-xl overflow-hidden shadow-lg">
                <div class="aspect-manga-portrait relative overflow-hidden">
                    <img src="${manga.images?.jpg?.large_image_url || 'http://static.photos/nature/200x300/' + (index + 1)}" 
                         alt="${manga.title}" 
                         class="w-full h-full object-cover transition-transform duration-300 group-hover:scale-105">
                </div>
                <div class="p-4">
                    <div class="flex flex-wrap gap-1 mb-2">
                        ${(manga.genres?.slice(0, 2) || []).map(genre => `
                            <span class="text-xs px-2 py-1 bg-gray-700 rounded">${genre.name}</span>
                        `).join('')}
                    </div>
                    <h3 class="font-bold text-sm mb-3 line-clamp-2 group-hover:text-gray-300">
                        ${manga.title}
                    </h3>
                    <div class="space-y-2 text-xs text-gray-400">
                        <div class="flex items-center justify-between">
                            <span class="flex items-center">
                                <i data-feather="book" class="w-3 h-3 mr-1"></i>
                                ${manga.chapters || '??'} capítulos
                            </span>
                            <span class="flex items-center">
                                <i data-feather="eye" class="w-3 h-3 mr-1"></i>
                                ${this.formatNumber(manga.scored_by || Math.floor(Math.random() * 50000) + 1000)}
                            </span>
                        </div>
                        <div class="flex items-center justify-between">
                            <span class="flex items-center">
                                <i data-feather="heart" class="w-3 h-3 mr-1"></i>
                                ${this.formatNumber(Math.floor(manga.members * 0.1) || Math.floor(Math.random() * 10000) + 500)}
                            </span>
                            <span class="flex items-center">
                                <i data-feather="star" class="w-3 h-3 mr-1"></i>
                                ${manga.score || 'N/A'}
                            </span>
                        </div>
                    </div>
                </div>
            </a>
        `).join('');
        
        // Re-render feather icons for new content
        feather.replace();
    }

    // New Chapters - Two-column list view
    async loadNewChapters() {
        const container = document.getElementById('chapters-list');
        const data = await this.fetchMangaData('manga', {
            order_by: 'start_date',
            sort: 'desc',
            limit: 20
        });

        if (!data.data || data.data.length === 0) {
            container.innerHTML = this.generateListSkeletons(12);
            return;
        }

        const chapters = data.data.flatMap(manga => {
            const chapterCount = manga.chapters || Math.floor(Math.random() * 80) + 10;
            const latestChapter = Math.floor(Math.random() * chapterCount) + 1;
            return [{
                manga_id: manga.mal_id,
                title: manga.title,
                chapter: latestChapter,
                timestamp: this.generateRandomTimestamp(),
                scan_group: this.getRandomScanGroup(),
                thumbnail: manga.images?.jpg?.image_url
            }];
        });

        this.renderChapters(chapters.slice(0, this.chaptersPerPage));
        this.setupChapterPagination(chapters.length);
    }

    renderChapters(chapters) {
        const container = document.getElementById('chapters-list');
        container.innerHTML = chapters.map(chapter => `
            <a href="#manga/${chapter.manga_id}/chapter/${chapter.chapter}" 
               class="group flex items-center p-4 bg-gray-800 rounded-lg hover:bg-gray-750 transition-all duration-300 hover:pl-6 overflow-hidden">
                <div class="w-16 h-20 flex-shrink-0 rounded overflow-hidden mr-4 bg-gray-700">
                    <img src="${chapter.thumbnail || 'http://static.photos/nature/200x250/' + (chapter.manga_id % 100)}" 
                         alt="${chapter.title}" 
                         class="w-full h-full object-cover group-hover:scale-105 transition-transform duration-300">
                </div>
                <div class="flex-grow min-w-0">
                    <h3 class="font-bold text-base mb-1 group-hover:text-gray-300 transition-colors truncate">
                        ${chapter.title}
                    </h3>
                    <div class="flex items-center flex-wrap gap-4 text-sm text-gray-400">
                        <span class="flex items-center">
                            <i data-feather="book-open" class="w-4 h-4 mr-1"></i>
                            Capítulo ${chapter.chapter}
                        </span>
                        <span class="flex items-center">
                            <i data-feather="users" class="w-4 h-4 mr-1"></i>
                            ${chapter.scan_group}
                        </span>
                        <span class="flex items-center">
                            <i data-feather="clock" class="w-4 h-4 mr-1"></i>
                            ${chapter.timestamp}
                        </span>
                    </div>
                </div>
                <div class="flex-shrink-0 ml-4">
                    <span class="px-2 py-1 text-xs bg-gray-700 rounded-full pulse-new">Nuevo</span>
                </div>
            </a>
        `).join('');
        
        feather.replace();
    }

    // Recommended Lists - Horizontal scroll
    loadRecommendedLists() {
        const container = document.getElementById('lists-carousel');
        const lists = [
            { name: 'Fantasía Épica', count: 33, color: 'purple', icon: 'sword' },
            { name: 'Romance Shoujo', count: 28, color: 'pink', icon: 'heart' },
            { name: 'Cyberpunk', count: 15, color: 'blue', icon: 'cpu' },
            { name: 'Misterio Psicológico', count: 22, color: 'gray', icon: 'eye' },
            { name: 'Aventura Isekai', count: 41, color: 'green', icon: 'compass' },
            { name: 'Horror Gore', count: 18, color: 'red', icon: 'alert-triangle' },
            { name: 'Slice of Life', count: 35, color: 'yellow', icon: 'coffee' },
            { name: 'Deportes', count: 12, color: 'orange', icon: 'activity' }
        ];

        container.innerHTML = lists.map(list => `
            <a href="#lista/${list.name.toLowerCase().replace(/\s+/g, '-')}" 
               class="manga-card group flex-shrink-0 w-48 bg-gradient-to-br from-gray-800 to-gray-850 rounded-xl p-6 shadow-lg hover:shadow-xl transition-all duration-300">
                <div class="text-center">
                    <div class="w-16 h-16 mx-auto mb-4 rounded-full bg-gray-700 flex items-center justify-center group-hover:scale-110 transition-transform">
                        <i data-feather="${list.icon}" class="w-8 h-8 text-gray-400"></i>
                    </div>
                    <h3 class="font-bold text-lg mb-2 group-hover:text-gray-300">
                        ${list.name}
                    </h3>
                    <p class="text-sm text-gray-400">
                        <span class="font-semibold text-gray-300">${list.count}</span> obras
                    </p>
                </div>
            </a>
        `).join('');
        
        feather.replace();
    }

    // Blog Section - 3-column grid
    loadBlogPosts() {
        const container = document.getElementById('blog-grid');
        const posts = [
            {
                title: 'Los mejores animes de primavera 2024',
                excerpt: 'Descubre qué series están dominando la temporada y cuáles no te puedes perder.',
                image: 'http://static.photos/nature/640x360/101',
                category: 'Temporada',
                date: '2 días atrás'
            },
            {
                title: 'Guía completa de Demon Slayer',
                excerpt: 'Todo lo que necesitas saber sobre el fenómeno que revolucionó el manga moderno.',
                image: 'http://static.photos/nature/640x360/102',
                category: 'Guía',
                date: '5 días atrás'
            },
            {
                title: 'Entrevista exclusiva con Tatsuki Fujimoto',
                excerpt: 'El autor de Chainsaw Man nos habla de su proceso creativo y futuros proyectos.',
                image: 'http://static.photos/nature/640x360/103',
                category: 'Entrevista',
                date: '1 semana atrás'
            }
        ];

        container.innerHTML = posts.map(post => `
            <a href="#blog/${post.title.toLowerCase().replace(/\s+/g, '-')}" 
               class="manga-card group bg-gray-800 rounded-xl overflow-hidden shadow-lg">
                <div class="aspect-video relative overflow-hidden">
                    <img src="${post.image}" 
                         alt="${post.title}" 
                         class="w-full h-full object-cover transition-transform duration-300 group-hover:scale-110">
                </div>
                <div class="p-6">
                    <div class="flex items-center justify-between mb-3">
                        <span class="text-xs px-3 py-1 bg-gray-700 rounded-full">${post.category}</span>
                        <span class="text-xs text-gray-400 flex items-center">
                            <i data-feather="calendar" class="w-3 h-3 mr-1"></i>
                            ${post.date}
                        </span>
                    </div>
                    <h3 class="font-bold text-xl mb-3 line-clamp-2 group-hover:text-gray-300">
                        ${post.title}
                    </h3>
                    <p class="text-gray-400 line-clamp-3 mb-4">
                        ${post.excerpt}
                    </p>
                    <div class="flex items-center text-gray-400 group-hover:text-gray-300 font-semibold">
                        Leer artículo
                        <i data-feather="arrow-right" class="w-4 h-4 ml-2 group-hover:translate-x-1 transition-transform"></i>
                    </div>
                </div>
            </a>
        `).join('');
        
        feather.replace();
    }

    // Carousel controls
    initializeCarousels() {
        // Popular carousel
        const popularCarousel = document.getElementById('popular-carousel');
        const popularPrev = document.getElementById('popular-prev');
        const popularNext = document.getElementById('popular-next');

        if (popularPrev && popularNext) {
            popularPrev.addEventListener('click', () => {
                popularCarousel.scrollBy({ left: -400, behavior: 'smooth' });
            });
            popularNext.addEventListener('click', () => {
                popularCarousel.scrollBy({ left: 400, behavior: 'smooth' });
            });
        }

        // Lists carousel
        const listsCarousel = document.getElementById('lists-carousel');
        const listsPrev = document.getElementById('lists-prev');
        const listsNext = document.getElementById('lists-next');

        if (listsPrev && listsNext) {
            listsPrev.addEventListener('click', () => {
                listsCarousel.scrollBy({ left: -300, behavior: 'smooth' });
            });
            listsNext.addEventListener('click', () => {
                listsCarousel.scrollBy({ left: 300, behavior: 'smooth' });
            });
        }
    }

    // Chapter filter
    initializeFilters() {
        const filter = document.getElementById('chapter-filter');
        if (filter) {
            filter.addEventListener('change', (e) => {
                // In a real app, this would filter the API results
                console.log('Filter changed to:', e.target.value);
                this.loadNewChapters();
            });
        }
    }

    // Pagination setup
    setupChapterPagination(totalItems) {
        const container = document.getElementById('chapters-pagination');
        const totalPages = Math.ceil(totalItems / this.chaptersPerPage);
        
        container.innerHTML = `
            <button class="px-4 py-2 bg-gray-800 hover:bg-gray-700 rounded-lg font-semibold transition-colors ${this.currentPage === 1 ? 'opacity-50 cursor-not-allowed' : ''}" 
                    ${this.currentPage === 1 ? 'disabled' : ''}>
                <i data-feather="chevron-left" class="w-4 h-4"></i>
                Anterior
            </button>
            ${Array.from({ length: Math.min(totalPages, 5) }, (_, i) => `
                <button class="px-4 py-2 rounded-lg font-semibold transition-colors ${i + 1 === this.currentPage ? 'bg-gray-600' : 'bg-gray-800 hover:bg-gray-700'}">
                    ${i + 1}
                </button>
            `).join('')}
            <button class="px-4 py-2 bg-gray-800 hover:bg-gray-700 rounded-lg font-semibold transition-colors ${this.currentPage === totalPages ? 'opacity-50 cursor-not-allowed' : ''}" 
                    ${this.currentPage === totalPages ? 'disabled' : ''}>
                Siguiente
                <i data-feather="chevron-right" class="w-4 h-4"></i>
            </button>
        `;
        
        feather.replace();
    }

    // Utility functions
    formatNumber(num) {
        if (num >= 1000000) return (num / 1000000).toFixed(1) + 'M';
        if (num >= 1000) return (num / 1000).toFixed(1) + 'k';
        return num.toString();
    }

    generateRandomTimestamp() {
        const times = ['Hace 15 min', 'Hace 1 hora', 'Hace 3 horas', 'Hace 6 horas', 'Hace 12 horas', 'Ayer', 'Hace 2 días'];
        return times[Math.floor(Math.random() * times.length)];
    }

    getRandomScanGroup() {
        const groups = ['MangoScan', 'NeoFansub', 'KawaiiScans', 'DarkManga', 'SkyTranslations', 'MoonlitScans'];
        return groups[Math.floor(Math.random() * groups.length)];
    }

    generateSkeletons(count, type = 'landscape') {
        const aspectClass = type === 'portrait' ? 'aspect-manga-portrait' : 'aspect-manga-landscape';
        return Array(count).fill(`
            <div class="${aspectClass} bg-gray-800 rounded-xl skeleton"></div>
        `).join('');
    }

    generateListSkeletons(count) {
        return Array(count).fill(`
            <div class="flex items-center p-4 bg-gray-800 rounded-lg skeleton">
                <div class="w-16 h-20 rounded mr-4"></div>
                <div class="flex-grow">
                    <div class="h-4 w-3/4 rounded mb-2"></div>
                    <div class="h-3 w-1/2 rounded"></div>
                </div>
            </div>
        `).join('');
    }
}

// Initialize app when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    new MangaApp();
    
    // Add scroll-based navbar effect
    const navbar = document.querySelector('manga-navbar');
    if (navbar) {
        window.addEventListener('scroll', () => {
            const scrolled = window.pageYOffset > 50;
            navbar.shadowRoot.querySelector('nav').classList.toggle('bg-opacity-95', scrolled);
            navbar.shadowRoot.querySelector('nav').classList.toggle('backdrop-blur', scrolled);
        });
    }
});

// Handle navigation
window.addEventListener('hashchange', () => {
    const hash = window.location.hash;
    if (hash.startsWith('#manga/')) {
        console.log('Navigate to manga:', hash);
        // In a real app, this would load manga detail page
    }
});