document.addEventListener('DOMContentLoaded', () => {
    setupNavigationHighlight();
    setupNavigationClicks();
    setupCopyright();
    setupProjectCards();
    setupAppsCarousel();
    setupGameCards();
});

function setupNavigationHighlight() {
    const sections = document.querySelectorAll('.scroll_section');
    const navOptions = document.querySelectorAll('.nav_option');
    const header = document.querySelector('header');
    const headerHeight = header ? header.offsetHeight : 0;
    
    const observer = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                const sectionId = entry.target.id;
                window.history.replaceState(null, null, `#${sectionId}`);
                navOptions.forEach(link => {
                    link.classList.toggle('active', link.getAttribute('href') === `#${sectionId}`);
                });
            }
        });
    }, {
        threshold: 0.7,
        rootMargin: `-${headerHeight}px 0px -40% 0px`
    });

    sections.forEach(section => observer.observe(section));
}

function setupNavigationClicks() {
    const header = document.querySelector('header');
    const headerHeight = header ? header.offsetHeight : 0;
    
    document.querySelectorAll('.nav_option').forEach(link => {
        link.addEventListener('click', (event) => {
            event.preventDefault();

            const targetId = link.getAttribute('href');
            const targetSection = document.querySelector(targetId);
            if (targetSection) {
                const targetPosition = targetSection.getBoundingClientRect().top + window.pageYOffset - headerHeight;
                window.scrollTo({
                    top: targetPosition,
                    behavior: 'smooth'
                });
            }
        });
    });
}

function setupCopyright() {
    document.getElementById('copyright').textContent = `© ${new Date().getFullYear()} - douwco.be`;
}

function setupProjectCards() {
    const projectCards = document.querySelectorAll('.project-card-new');
    
    projectCards.forEach(card => {
        const shortDesc = card.querySelector('.project-card-short-desc');
        const fullContent = card.querySelector('.project-card-content');
        const toggleIcon = card.querySelector('.toggle-icon');
        
        if (!shortDesc || !fullContent || !toggleIcon) return;
        
        const toggleCard = (event) => {
            if (event.target.tagName === 'A') {
                return;
            }
            
            const isExpanded = card.classList.contains('expanded');
            
            if (isExpanded) {
                card.classList.remove('expanded');
                toggleIcon.textContent = '+';
            } else {
                card.classList.add('expanded');
                toggleIcon.textContent = '−';
            }
            
            event.stopPropagation();
        };
        
        card.addEventListener('click', toggleCard);
        toggleIcon.addEventListener('click', toggleCard);
    });
}

function setupAppsCarousel() {
    const carousel = document.getElementById('apps-carousel');
    const carouselContainer = carousel ? carousel.closest('.carousel-container-full') : null;
    const items = document.querySelectorAll('#apps-carousel .carousel-item-full');
    const prevBtn = carouselContainer ? carouselContainer.querySelector('.carousel-nav-full.prev') : null;
    const nextBtn = carouselContainer ? carouselContainer.querySelector('.carousel-nav-full.next') : null;
    const screenshotImg = document.getElementById('apps-screenshot-img');
    const description = document.getElementById('apps-description');
    const title = document.getElementById('apps-title');
    const goToAppBtn = document.getElementById('apps-link');
    
    if (!carousel || items.length === 0) return;
    
    const services = [
        {
            name: 'Gitea',
            screenshot: '/assets/img/gitea_screenshot.png',
            description: 'Self-hosted Git service with a simple and lightweight interface.',
            url: 'https://gitea.douwco.be'
        },
        {
            name: 'Nextcloud',
            screenshot: '/assets/img/nextcloud_screenshot.png',
            description: 'Private file hosting and collaboration platform with powerful features.',
            url: 'https://nextcloud.douwco.be'
        },
        {
            name: 'Penpot',
            screenshot: '/assets/img/penpot_screenshot.png',
            description: 'Open-source design and prototyping platform for teams.',
            url: 'https://penpot.douwco.be'
        },
        {
            name: 'Beszel',
            screenshot: '/assets/img/beszel_screenshot.png',
            description: 'Custom service management and monitoring dashboard.',
            url: 'https://beszel.douwco.be'
        },
        {
            name: 'Wattif',
            screenshot: '/assets/img/wattif_screenshot.png',
            description: 'Energy monitoring and analysis tool for smart homes.',
            url: 'https://wattif.douwco.be'
        }
    ];
    
    let currentIndex = 0;
    let isAnimating = false;
    
    function updateCarousel() {
        if (isAnimating) return;
        isAnimating = true;
        
        items.forEach((item, index) => {
            const isSelected = index === currentIndex;
            item.setAttribute('data-selected', isSelected.toString());
        });
        
        const service = services[currentIndex];
        
        if (description) description.classList.remove('active');
        if (screenshotImg) screenshotImg.classList.remove('active');
        if (title) title.classList.remove('active');
        if (goToAppBtn) goToAppBtn.classList.remove('active');
        
        setTimeout(() => {
            if (screenshotImg) {
                screenshotImg.src = service.screenshot;
            }
            if (title) {
                title.textContent = service.name;
            }
            if (description) {
                description.innerHTML = `<p>${service.description}</p>`;
            }
            if (goToAppBtn) {
                goToAppBtn.href = service.url;
            }
            
            setTimeout(() => {
                if (description) description.classList.add('active');
                if (screenshotImg) screenshotImg.classList.add('active');
                if (title) title.classList.add('active');
                if (goToAppBtn) goToAppBtn.classList.add('active');
                isAnimating = false;
            }, 50);
        }, 300);
    }
    
    function rotateCarousel(direction) {
        if (isAnimating) return;
        
        currentIndex = (currentIndex + direction + items.length) % items.length;
        updateCarousel();
    }
    
    if (prevBtn) {
        prevBtn.addEventListener('click', () => rotateCarousel(-1));
    }
    
    if (nextBtn) {
        nextBtn.addEventListener('click', () => rotateCarousel(1));
    }
    
    items.forEach((item, index) => {
        item.addEventListener('click', () => {
            if (isAnimating) return;
            currentIndex = index;
            updateCarousel();
        });
    });
    
    let touchStartX = 0;
    let touchEndX = 0;
    
    if (carousel) {
        carousel.addEventListener('touchstart', (e) => {
            touchStartX = e.changedTouches[0].screenX;
        }, { passive: true });
        
        carousel.addEventListener('touchend', (e) => {
            touchEndX = e.changedTouches[0].screenX;
            handleSwipe();
        }, { passive: true });
    }
    
    function handleSwipe() {
        if (isAnimating) return;
        
        const swipeThreshold = 50;
        const diff = touchStartX - touchEndX;
        
        if (Math.abs(diff) > swipeThreshold) {
            if (diff > 0) {
                rotateCarousel(1);
            } else {
                rotateCarousel(-1);
            }
        }
    }
    
    if (carousel) {
        carousel.addEventListener('wheel', (e) => {
            if (isAnimating) return;
            e.preventDefault();
            if (e.deltaY > 0) {
                rotateCarousel(1);
            } else {
                rotateCarousel(-1);
            }
        }, { passive: false });
    }
    
    updateCarousel();
}

function setupGameCards() {
    const gameCards = document.querySelectorAll('.game-card');
    
    gameCards.forEach(card => {
        card.addEventListener('click', (event) => {
            const isExpanded = card.classList.contains('expanded');
            
            if (isExpanded) {
                card.classList.remove('expanded');
            } else {
                gameCards.forEach(c => c.classList.remove('expanded'));
                card.classList.add('expanded');
            }
            
            event.stopPropagation();
        });
        
        const playButton = card.querySelector('.play-button');
        if (playButton) {
            playButton.addEventListener('click', (event) => {
                event.stopPropagation();
            });
        }
    });
}