// Main JavaScript for Deployr Landing Page

// Initialize when DOM is loaded
document.addEventListener('DOMContentLoaded', function() {
    initializeAnimations();
    initializeScrollEffects();
    initializeParallax();
    initializeParticles();
    initializeTypingEffect();
    initializeCountUp();
    initializeModalHandlers();
});

// Initialize animations
function initializeAnimations() {
    // Intersection Observer for fade-in animations
    const observerOptions = {
        threshold: 0.1,
        rootMargin: '0px 0px -50px 0px'
    };

    const observer = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                entry.target.classList.add('animate-fade-in-up');
                observer.unobserve(entry.target);
            }
        });
    }, observerOptions);

    // Observe all service cards and sections
    document.querySelectorAll('.service-card, section > div').forEach(el => {
        observer.observe(el);
    });
}

// Scroll effects
function initializeScrollEffects() {
    let lastScrollY = window.scrollY;
    let ticking = false;

    function updateScrollEffects() {
        const scrollY = window.scrollY;
        const navbar = document.querySelector('nav');
        
        // Navbar background on scroll
        if (scrollY > 50) {
            navbar.classList.add('bg-dark/95', 'backdrop-blur-lg', 'shadow-lg');
        } else {
            navbar.classList.remove('bg-dark/95', 'backdrop-blur-lg', 'shadow-lg');
        }

        lastScrollY = scrollY;
        ticking = false;
    }

    function requestTick() {
        if (!ticking) {
            window.requestAnimationFrame(updateScrollEffects);
            ticking = true;
        }
    }

    window.addEventListener('scroll', requestTick);
}

// Parallax effect
function initializeParallax() {
    const parallaxElements = document.querySelectorAll('[data-parallax]');

    function updateParallax() {
        const scrolled = window.pageYOffset;

        parallaxElements.forEach(element => {
            const speed = element.dataset.speed || 0.5;
            const yPos = -(scrolled * speed);
            element.style.transform = `translateY(${yPos}px)`;
        });
    }

    window.addEventListener('scroll', updateParallax);
}

// Particle effects
function initializeParticles() {
    const particleContainer = document.createElement('div');
    particleContainer.className = 'fixed inset-0 pointer-events-none z-0';
    document.body.appendChild(particleContainer);

    for (let i = 0; i < 20; i++) {
        setTimeout(() => {
            const particle = document.createElement('div');
            particle.className = 'particle';
            particle.style.left = Math.random() * 100 + '%';
            particle.style.animationDelay = Math.random() * 10 + 's';
            particle.style.animationDuration = (10 + Math.random() * 10) + 's';
            particleContainer.appendChild(particle);
        }, i * 200);
    }
}

// Typing effect
function initializeTypingEffect() {
    const typingElement = document.querySelector('[data-typing]');
    if (!typingElement) return;

    const text = typingElement.getAttribute('data-typing');
    let index = 0;

    function type() {
        if (index < text.length) {
            typingElement.textContent += text.charAt(index);
            index++;
            setTimeout(type, 100);
        }
    }

    type();
}

// Count up animation
function initializeCountUp() {
    const countElements = document.querySelectorAll('[data-count]');
    
    const countObserver = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                const target = parseInt(entry.target.getAttribute('data-count'));
                const duration = 2000;
                const increment = target / (duration / 16);
                let current = 0;

                const updateCount = () => {
                    if (current < target) {
                        current += increment;
                        entry.target.textContent = Math.floor(current);
                        requestAnimationFrame(updateCount);
                    } else {
                        entry.target.textContent = target;
                    }
                };

                updateCount();
                countObserver.unobserve(entry.target);
            }
        });
    });

    countElements.forEach(el => countObserver.observe(el));
}

// Modal handlers
function initializeModalHandlers() {
    // Open modal buttons
    document.querySelectorAll('[data-modal]').forEach(button => {
        button.addEventListener('click', () => {
            const modalId = button.getAttribute('data-modal');
            const modal = document.getElementById(modalId);
            if (modal) {
                modal.classList.remove('hidden');
                document.body.style.overflow = 'hidden';
            }
        });
    });

    // Close modal buttons
    document.querySelectorAll('[data-close-modal]').forEach(button => {
        button.addEventListener('click', () => {
            const modal = button.closest('.modal');
            if (modal) {
                modal.classList.add('hidden');
                document.body.style.overflow = 'auto';
            }
        });
    });

    // Close modal on backdrop click
    document.querySelectorAll('.modal').forEach(modal => {
        modal.addEventListener('click', (e) => {
            if (e.target === modal) {
                modal.classList.add('hidden');
                document.body.style.overflow = 'auto';
            }
        });
    });
}

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

// Form validation
function validateForm(formId) {
    const form = document.getElementById(formId);
    if (!form) return false;

    const inputs = form.querySelectorAll('input[required], textarea[required]');
    let isValid = true;

    inputs.forEach(input => {
        if (!input.value.trim()) {
            input.classList.add('border-red-500');
            isValid = false;
        } else {
            input.classList.remove('border-red-500');
        }
    });

    return isValid;
}

// Loading state for buttons
function setLoading(buttonId, loading = true) {
    const button = document.getElementById(buttonId);
    if (!button) return;

    if (loading) {
        button.disabled = true;
        button.classList.add('opacity-50', 'cursor-not-allowed');
        button.innerHTML = '<span class="loading-spinner inline-block mr-2"></span>Loading...';
    } else {
        button.disabled = false;
        button.classList.remove('opacity-50', 'cursor-not-allowed');
        button.innerHTML = button.getAttribute('data-original-text') || 'Submit';
    }
}

// Toast notification
function showToast(message, type = 'success') {
    const toast = document.createElement('div');
    toast.className = `fixed bottom-4 right-4 px-6 py-3 rounded-lg shadow-lg transform transition-all duration-300 z-50 ${
        type === 'success' ? 'bg-green-500' : 'bg-red-500'
    } text-white`;
    toast.textContent = message;

    document.body.appendChild(toast);

    setTimeout(() => {
        toast.classList.add('translate-y-0', 'opacity-100');
    }, 100);

    setTimeout(() => {
        toast.classList.add('translate-y-full', 'opacity-0');
        setTimeout(() => toast.remove(), 300);
    }, 3000);
}

// API call helper
async function apiCall(url, options = {}) {
    try {
        const response = await fetch(url, {
            headers: {
                'Content-Type': 'application/json',
                ...options.headers
            },
            ...options
        });

        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }

        return await response.json();
    } catch (error) {
        console.error('API call failed:', error);
        showToast('An error occurred. Please try again.', 'error');
        throw error;
    }
}

// Initialize GSAP animations if available
if (typeof gsap !== 'undefined') {
    gsap.registerPlugin(ScrollTrigger);
    
    // Hero section animation
    gsap.timeline()
        .from('.hero h1', { y: 50, opacity: 0, duration: 1 })
        .from('.hero p', { y: 30, opacity: 0, duration: 0.8 }, '-=0.5')
        .from('.hero .cta', { y: 20, opacity: 0, duration: 0.6 }, '-=0.3');
}

// Theme toggle (if implemented)
function toggleTheme() {
    document.body.classList.toggle('light-theme');
    const isLight = document.body.classList.contains('light-theme');
    localStorage.setItem('theme', isLight ? 'light' : 'dark');
}

// Load saved theme
const savedTheme = localStorage.getItem('theme');
if (savedTheme === 'light') {
    document.body.classList.add('light-theme');
}

// Analytics tracking
function trackEvent(eventName, properties = {}) {
    if (typeof gtag !== 'undefined') {
        gtag('event', eventName, properties);
    }
}

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

// Optimized resize handler
const optimizedResize = debounce(() => {
    // Handle resize events
}, 100);

window.addEventListener('resize', optimizedResize);

// Keyboard navigation
document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape') {
        const openModal = document.querySelector('.modal:not(.hidden)');
        if (openModal) {
            openModal.classList.add('hidden');
            document.body.style.overflow = 'auto';
        }
    }
});

// Initialize tooltips
function initializeTooltips() {
    document.querySelectorAll('[data-tooltip]').forEach(element => {
        element.addEventListener('mouseenter', (e) => {
            const tooltip = document.createElement('div');
            tooltip.className = 'absolute z-50 px-2 py-1 text-xs bg-gray-800 text-white rounded';
            tooltip.textContent = e.target.getAttribute('data-tooltip');
            tooltip.style.bottom = '100%';
            tooltip.style.left = '50%';
            tooltip.style.transform = 'translateX(-50%)';
            e.target.style.position = 'relative';
            e.target.appendChild(tooltip);
        });

        element.addEventListener('mouseleave', (e) => {
            const tooltip = e.target.querySelector('.absolute');
            if (tooltip) tooltip.remove();
        });
    });
}

// Initialize everything
initializeTooltips();