// Main JavaScript for ChromaCanvas Studio

// API Configuration
const UNSPLASH_API_KEY = 'YOUR_UNSPLASH_ACCESS_KEY'; // Replace with your Unsplash Access Key
const UNSPLASH_BASE_URL = 'https://api.unsplash.com';
const ARTWORKS_PER_PAGE = 6;

// Featured artworks data (fallback if API fails)
const featuredArtworksFallback = [
    {
        id: 1,
        title: "Neon Dreams",
        artist: "Alex Chen",
        image: "https://static.photos/abstract/640x360/1",
        likes: 245,
        category: "Abstract"
    },
    {
        id: 2,
        title: "Digital Waves",
        artist: "Maya Rodriguez",
        image: "https://static.photos/blue/640x360/2",
        likes: 189,
        category: "Digital"
    },
    {
        id: 3,
        title: "Color Symphony",
        artist: "James Wilson",
        image: "https://static.photos/gradient/640x360/3",
        likes: 312,
        category: "Gradient"
    },
    {
        id: 4,
        title: "Urban Echoes",
        artist: "Sarah Kim",
        image: "https://static.photos/cityscape/640x360/4",
        likes: 156,
        category: "Cityscape"
    },
    {
        id: 5,
        title: "Cosmic Dance",
        artist: "David Park",
        image: "https://static.photos/technology/640x360/5",
        likes: 278,
        category: "Sci-Fi"
    },
    {
        id: 6,
        title: "Serene Moments",
        artist: "Emma Thompson",
        image: "https://static.photos/nature/640x360/6",
        likes: 194,
        category: "Nature"
    }
];

// Load featured artworks
async function loadFeaturedArtworks() {
    const container = document.getElementById('featured-artworks');
    if (!container) return;

    try {
        // Try to fetch from Unsplash API
        const response = await fetch(
            `${UNSPLASH_BASE_URL}/photos/random?count=${ARTWORKS_PER_PAGE}&query=abstract,art,digital,colorful&client_id=${UNSPLASH_API_KEY}`
        );
        
        if (!response.ok) throw new Error('API request failed');
        
        const data = await response.json();
        
        container.innerHTML = data.map((photo, index) => `
            <div class="art-card group cursor-pointer">
                <div class="relative overflow-hidden rounded-2xl mb-4">
                    <img 
                        src="${photo.urls.regular}" 
                        alt="${photo.alt_description || 'Digital artwork'}"
                        class="w-full h-64 object-cover image-zoom group-hover:scale-105 transition-transform duration-500"
                        loading="lazy"
                    >
                    <div class="absolute inset-0 bg-gradient-to-t from-black/60 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-300"></div>
                    <div class="absolute bottom-4 left-4 right-4 text-white opacity-0 group-hover:opacity-100 transition-opacity duration-300">
                        <div class="flex justify-between items-center">
                            <span class="px-3 py-1 bg-white/20 backdrop-blur-sm rounded-full text-sm">${photo.tags?.[0]?.title || 'Art'}</span>
                            <button class="like-btn p-2 rounded-full bg-white/20 backdrop-blur-sm hover:bg-white/30 transition-colors" data-id="${photo.id}">
                                <i data-feather="heart" class="w-4 h-4"></i>
                            </button>
                        </div>
                    </div>
                </div>
                <h3 class="font-display font-semibold text-lg mb-1">${photo.user.name || 'Unknown Artist'}</h3>
                <p class="text-gray-600 text-sm">${photo.description?.substring(0, 50) || 'Beautiful digital artwork'}...</p>
                <div class="flex items-center justify-between mt-3">
                    <span class="text-primary-600 font-medium">$${Math.floor(Math.random() * 500) + 50}</span>
                    <div class="flex items-center gap-2 text-gray-500">
                        <i data-feather="eye" class="w-4 h-4"></i>
                        <span class="text-sm">${photo.views || Math.floor(Math.random() * 1000)}</span>
                    </div>
                </div>
            </div>
        `).join('');
        
    } catch (error) {
        console.log('Using fallback data:', error);
        // Use fallback data
        container.innerHTML = featuredArtworksFallback.map(art => `
            <div class="art-card group cursor-pointer">
                <div class="relative overflow-hidden rounded-2xl mb-4">
                    <img 
                        src="${art.image}" 
                        alt="${art.title}"
                        class="w-full h-64 object-cover image-zoom group-hover:scale-105 transition-transform duration-500"
                        loading="lazy"
                    >
                    <div class="absolute inset-0 bg-gradient-to-t from-black/60 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-300"></div>
                    <div class="absolute bottom-4 left-4 right-4 text-white opacity-0 group-hover:opacity-100 transition-opacity duration-300">
                        <div class="flex justify-between items-center">
                            <span class="px-3 py-1 bg-white/20 backdrop-blur-sm rounded-full text-sm">${art.category}</span>
                            <button class="like-btn p-2 rounded-full bg-white/20 backdrop-blur-sm hover:bg-white/30 transition-colors" data-id="${art.id}">
                                <i data-feather="heart" class="w-4 h-4"></i>
                            </button>
                        </div>
                    </div>
                </div>
                <h3 class="font-display font-semibold text-lg mb-1">${art.title}</h3>
                <p class="text-gray-600 text-sm">By ${art.artist}</p>
                <div class="flex items-center justify-between mt-3">
                    <span class="text-primary-600 font-medium">$${Math.floor(Math.random() * 500) + 50}</span>
                    <div class="flex items-center gap-2 text-gray-500">
                        <i data-feather="heart" class="w-4 h-4"></i>
                        <span class="text-sm">${art.likes}</span>
                    </div>
                </div>
            </div>
        `).join('');
    }
    
    // Re-initialize feather icons
    feather.replace();
    
    // Add event listeners for like buttons
    document.querySelectorAll('.like-btn').forEach(btn => {
        btn.addEventListener('click', function(e) {
            e.stopPropagation();
            const icon = this.querySelector('i');
            const isLiked = icon.getAttribute('data-feather') === 'heart';
            
            if (isLiked) {
                icon.setAttribute('data-feather', 'heart');
                this.classList.remove('text-red-500');
            } else {
                icon.setAttribute('data-feather', 'heart');
                this.classList.add('text-red-500');
            }
            feather.replace();
        });
    });
}

// Initialize theme (light/dark mode)
function initTheme() {
    const themeToggle = document.getElementById('theme-toggle');
    if (!themeToggle) return;

    // Check for saved theme preference or default to light
    const currentTheme = localStorage.getItem('theme') || 'light';
    
    if (currentTheme === 'dark') {
        document.documentElement.classList.add('dark');
        themeToggle.innerHTML = '<i data-feather="sun"></i>';
    } else {
        document.documentElement.classList.remove('dark');
        themeToggle.innerHTML = '<i data-feather="moon"></i>';
    }
    
    themeToggle.addEventListener('click', () => {
        if (document.documentElement.classList.contains('dark')) {
            document.documentElement.classList.remove('dark');
            localStorage.setItem('theme', 'light');
            themeToggle.innerHTML = '<i data-feather="moon"></i>';
        } else {
            document.documentElement.classList.add('dark');
            localStorage.setItem('theme', 'dark');
            themeToggle.innerHTML = '<i data-feather="sun"></i>';
        }
        feather.replace();
    });
}

// Mobile menu toggle
function initMobileMenu() {
    const mobileMenuBtn = document.getElementById('mobile-menu-btn');
    const mobileMenu = document.getElementById('mobile-menu');
    
    if (mobileMenuBtn && mobileMenu) {
        mobileMenuBtn.addEventListener('click', () => {
            mobileMenu.classList.toggle('hidden');
            const icon = mobileMenuBtn.querySelector('i');
            if (mobileMenu.classList.contains('hidden')) {
                icon.setAttribute('data-feather', 'menu');
            } else {
                icon.setAttribute('data-feather', 'x');
            }
            feather.replace();
        });
    }
}

// Smooth scroll for anchor links
function initSmoothScroll() {
    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
        anchor.addEventListener('click', function (e) {
            const href = this.getAttribute('href');
            if (href === '#') return;
            
            e.preventDefault();
            const target = document.querySelector(href);
            if (target) {
                target.scrollIntoView({
                    behavior: 'smooth',
                    block: 'start'
                });
            }
        });
    });
}

// Initialize all functions when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    initTheme();
    initMobileMenu();
    initSmoothScroll();
    
    // Check if we're on homepage to load artworks
    if (window.location.pathname.endsWith('index.html') || window.location.pathname === '/') {
        loadFeaturedArtworks();
    }
});

// Debounce function for performance
function debounce(func, wait) {
    let timeout;
    return function executedFunction(...args) {
        const later = () => {
            clearTimeout(timeout);
            func(...args);
        };
        clearTimeout(timeout);
        timeout = setTimeout(later, wait);
    };
}

// Handle window resize with debounce
window.addEventListener('resize', debounce(() => {
    // Handle responsive behaviors
    const mobileMenu = document.getElementById('mobile-menu');
    if (window.innerWidth >= 768 && mobileMenu) {
        mobileMenu.classList.add('hidden');
        const menuBtn = document.getElementById('mobile-menu-btn');
        if (menuBtn) {
            menuBtn.querySelector('i').setAttribute('data-feather', 'menu');
            feather.replace();
        }
    }
}, 250));