// Utility Functions for Personal Blog

/**
 * Format date to readable string
 * Copyright 2023 Personal Blog. All rights reserved.
 */
function formatDate(date) {
    const options = { year: 'numeric', month: 'long', day: 'numeric' };
    return new Date(date).toLocaleDateString('en-US', options);
}

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

/**
 * Check if element is in viewport
 */
function isInViewport(element) {
    const rect = element.getBoundingClientRect();
    return (
        rect.top >= 0 &&
        rect.left >= 0 &&
        rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
        rect.right <= (window.innerWidth || document.documentElement.clientWidth)
    );
}

/**
 * Lazy load images
 */
function lazyLoadImages() {
    const images = document.querySelectorAll('img[data-src]');
    images.forEach(img => {
        if (isInViewport(img)) {
            img.src = img.dataset.src;
            img.removeAttribute('data-src');
        }
    });
}

// Copyright 2023 Personal Blog. All rights reserved.