// NeuroMorph Gallery - Shared JavaScript
class NeuroMorphGallery {
    constructor() {
        this.artworks = [];
        this.currentPage = 1;
        this.artworksPerPage = 9;
        this.init();
    }

    async init() {
        await this.registerServiceWorker();
        this.setupEventListeners();
        await this.loadArtworks();
        this.updateStats();
        this.setupOfflineDetection();
    }

    // PWA Service Worker Registration
    async registerServiceWorker() {
        if ('serviceWorker' in navigator) {
            try {
                await navigator.serviceWorker.register('/sw.js');
                console.log('Service Worker registered successfully');
            } catch (error) {
                console.error('Service Worker registration failed:', error);
            }
        }
    }

    // GraphQL API Integration
    async fetchArtworks(page = 1) {
        const query = `
            query GetArtworks($page: Int!, $limit: Int!) {
                artworks(page: $page, limit: $limit) {
                    id
                    title
                    description
                    imageUrl
                    artist {
                        name
                        avatar
                    }
                    likes
                    views
                    createdAt
                    tags
                }
            }
        `;

        try {
            const response = await fetch('/graphql', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({
                    query,
                    variables: { page, limit: this.artworksPerPage }
                })
            });

            const result = await response.json();
            return result.data?.artworks || [];
        } catch (error) {
            console.error('Error fetching artworks:', error);
            
            // Fallback to mock data if API is unavailable
            return this.getMockArtworks(page);
        }
    }

    // Mock data for demonstration
    getMockArtworks(page) {
        const mockArtworks = [];
        const startIndex = (page - 1) * this.artworksPerPage;
        
        for (let i = 0; i < this.artworksPerPage; i++) {
            mockArtworks.push({
                id: `artwork-${startIndex + i + 1}`,
                title: `AI Dreamscape ${startIndex + i + 1}`,
                description: 'A stunning AI-generated artwork showcasing the intersection of technology and creativity.',
                imageUrl: `http://static.photos/abstract/640x360/${startIndex + i + 1}`,
                artist: {
                    name: `NeuralArtist${startIndex + i + 1}`,
                    avatar: `http://static.photos/people/200x200/${startIndex + i + 1}`
                },
                likes: Math.floor(Math.random() * 1000),
                views: Math.floor(Math.random() * 5000),
                createdAt: new Date().toISOString(),
                tags: ['AI', 'Digital Art', 'Abstract', 'Modern']
            });
        }
        
        return mockArtworks;
    }

    // Load and display artworks
    async loadArtworks() {
        const artworks = await this.fetchArtworks(this.currentPage);
        this.artworks = [...this.artworks, ...artworks];
        this.renderArtworks(artworks);
    }

    renderArtworks(artworks) {
        const grid = document.getElementById('artworks-grid');
        
        artworks.forEach(artwork => {
            const artworkCard = document.createElement('artwork-card');
            artworkCard.setAttribute('data-artwork', JSON.stringify(artwork));
            grid.appendChild(artworkCard);
        });
    }

    // Update statistics
    updateStats() {
        // Simulate real-time stats updates
        setInterval(() => {
            document.getElementById('total-artworks').textContent = 
                (1247 + Math.floor(Math.random() * 10)).toLocaleString();
            
            document.getElementById('active-artists').textContent = 
                (356 + Math.floor(Math.random() * 5)).toLocaleString();
            
            document.getElementById('monthly-views').textContent = 
                (89200 + Math.floor(Math.random() * 1000)).toLocaleString();
        }, 5000);
    }

    // Event listeners setup
    setupEventListeners() {
        // Load more artworks
        const loadMoreBtn = document.getElementById('load-more');
        if (loadMoreBtn) {
            loadMoreBtn.addEventListener('click', () => {
                this.currentPage++;
                this.loadArtworks();
            });
        }

        // Search functionality
        const searchInput = document.querySelector('input[type="search"]');
        if (searchInput) {
            searchInput.addEventListener('input', (e) => {
                this.searchArtworks(e.target.value);
            });
        }
    }

    // Search artworks
    searchArtworks(query) {
        const filtered = this.artworks.filter(artwork => 
            artwork.title.toLowerCase().includes(query.toLowerCase()) ||
            artwork.description.toLowerCase().includes(query.toLowerCase()) ||
            artwork.tags.some(tag => tag.toLowerCase().includes(query.toLowerCase()))
        );

        this.renderSearchResults(filtered);
    }

    renderSearchResults(artworks) {
        const grid = document.getElementById('artworks-grid');
        grid.innerHTML = '';
        
        artworks.forEach(artwork => {
            const artworkCard = document.createElement('artwork-card');
            artworkCard.setAttribute('data-artwork', JSON.stringify(artwork));
            grid.appendChild(artworkCard);
        });
    }

    // Offline detection
    setupOfflineDetection() {
        window.addEventListener('online', () => {
            this.hideOfflineIndicator();
            console.log('App is online');
        });

        window.addEventListener('offline', () => {
            this.showOfflineIndicator();
            console.log('App is offline');
        });
    }

    showOfflineIndicator() {
        const indicator = document.createElement('div');
        indicator.className = 'offline-indicator';
        indicator.textContent = 'You are currently offline. Some features may be limited.';
        indicator.style.display = 'block';
        document.body.appendChild(indicator);
    }

    hideOfflineIndicator() {
        const indicator = document.querySelector('.offline-indicator');
        if (indicator) {
            indicator.style.display = 'none';
        }
    }

    // Image optimization and lazy loading
    optimizeImages() {
        const images = document.querySelectorAll('img[data-src]');
        
        const imageObserver = new IntersectionObserver((entries, observer) => {
            entries.forEach(entry => {
                if (entry.isIntersecting) {
                    const img = entry.target;
                    img.src = img.dataset.src;
                    img.removeAttribute('data-src');
                    observer.unobserve(img);
                }
            });
        });

        images.forEach(img => imageObserver.observe(img));
    }
}
// Initialize the gallery when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    new NeuroMorphGallery();
});
// Export for use in other modules
window.NeuroMorphGallery = NeuroMorphGallery;