// Theme Management
const themeToggle = () => {
    const html = document.documentElement;
    const isDark = html.classList.contains('dark');
    
    if (isDark) {
        html.classList.remove('dark');
        html.classList.add('light');
        localStorage.setItem('theme', 'light');
    } else {
        html.classList.remove('light');
        html.classList.add('dark');
        localStorage.setItem('theme', 'dark');
    }
    updateChartColors();
};

// Check system preference on load
if (localStorage.getItem('theme') === 'dark' || (!localStorage.getItem('theme') && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
    document.documentElement.classList.add('dark');
} else {
    document.documentElement.classList.remove('dark');
}

// Portfolio Chart Data
const portfolioData = [
    { asset: 'Bitcoin', value: 45, color: 'bg-primary-500' },
    { asset: 'Ethereum', value: 30, color: 'bg-secondary-500' },
    { asset: 'Solana', value: 15, color: 'bg-purple-500' },
    { asset: 'USDT', value: 10, color: 'bg-emerald-500' }
];

// Render Chart
function renderChart() {
    const chartContainer = document.getElementById('portfolioChart');
    if (!chartContainer) return;
    
    chartContainer.innerHTML = '';
    
    portfolioData.forEach((item, index) => {
        const bar = document.createElement('div');
        bar.className = `chart-bar w-full ${item.color} rounded-t-lg opacity-90 hover:opacity-100 cursor-pointer relative group`;
        bar.style.height = '0%';
        bar.innerHTML = `
            <div class="absolute -top-8 left-1/2 transform -translate-x-1/2 bg-slate-800 text-white text-xs px-2 py-1 rounded opacity-0 group-hover:opacity-100 transition-opacity whitespace-nowrap">
                ${item.asset}: ${item.value}%
            </div>
        `;
        chartContainer.appendChild(bar);
        
        // Animate height after small delay
        setTimeout(() => {
            bar.style.height = `${item.value * 2}%`;
        }, index * 100 + 100);
    });
}

// Update chart colors based on theme
function updateChartColors() {
    // Force re-render to adjust any theme-specific colors if needed
    renderChart();
}

// Modal Functions
function openModal(type) {
    const overlay = document.getElementById('modalOverlay');
    const modals = document.querySelectorAll('.modal-content');
    
    modals.forEach(m => m.classList.add('hidden'));
    
    const targetModal = document.getElementById(type + 'Modal');
    if (targetModal) {
        targetModal.classList.remove('hidden');
        overlay.classList.remove('hidden');
        // Trigger reflow for animation
        void overlay.offsetWidth;
        overlay.classList.remove('opacity-0');
        targetModal.classList.remove('scale-95');
        targetModal.classList.add('scale-100');
    }
}

function closeModal() {
    const overlay = document.getElementById('modalOverlay');
    const modals = document.querySelectorAll('.modal-content');
    
    overlay.classList.add('opacity-0');
    modals.forEach(m => {
        m.classList.remove('scale-100');
        m.classList.add('scale-95');
    });
    
    setTimeout(() => {
        overlay.classList.add('hidden');
        modals.forEach(m => m.classList.add('hidden'));
    }, 300);
}

// Close modal on outside click
document.getElementById('modalOverlay')?.addEventListener('click', (e) => {
    if (e.target.id === 'modalOverlay') {
        closeModal();
    }
});

// Toast Notification
function showToast(message, type = 'success') {
    const toast = document.getElementById('toast');
    const toastMessage = document.getElementById('toastMessage');
    
    toastMessage.textContent = message;
    
    // Update icon based on type
    const icon = toast.querySelector('i');
    if (type === 'error') {
        icon.setAttribute('data-feather', 'alert-circle');
        icon.classList.remove('text-emerald-400');
        icon.classList.add('text-red-400');
    } else {
        icon.setAttribute('data-feather', 'check-circle');
        icon.classList.remove('text-red-400');
        icon.classList.add('text-emerald-400');
    }
    
    feather.replace();
    
    toast.classList.remove('translate-y-20', 'opacity-0');
    
    setTimeout(() => {
        toast.classList.add('translate-y-20', 'opacity-0');
    }, 3000);
}

// Handle Send Form
function handleSend(e) {
    e.preventDefault();
    closeModal();
    
    // Simulate processing
    setTimeout(() => {
        showToast('Transaction sent successfully!');
        updateBalance(-0.5); // Simulate balance change
    }, 500);
}

// Copy Address
function copyAddress() {
    navigator.clipboard.writeText('0x71C7656EC7ab88b098defB751B7401B5f6d8976F');
    showToast('Address copied to clipboard!');
}

// Balance Update Simulation
let currentBalance = 24589.42;
function updateBalance(change) {
    currentBalance += change;
    const balanceElement = document.querySelector('.balance-amount');
    if (balanceElement) {
        animateValue(balanceElement, currentBalance - change, currentBalance, 1000);
    }
}

function animateValue(obj, start, end, duration) {
    let startTimestamp = null;
    const step = (timestamp) => {
        if (!startTimestamp) startTimestamp = timestamp;
        const progress = Math.min((timestamp - startTimestamp) / duration, 1);
        const value = progress * (end - start) + start;
        obj.innerHTML = '$' + value.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
        if (progress < 1) {
            window.requestAnimationFrame(step);
        }
    };
    window.requestAnimationFrame(step);
}

// Simulate live price updates
setInterval(() => {
    const change = (Math.random() - 0.5) * 100;
    currentBalance += change;
    const balanceElement = document.querySelector('.balance-amount');
    if (balanceElement) {
        balanceElement.innerHTML = '$' + currentBalance.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
    }
    
    // Update percentage indicator
    const percentChange = document.querySelector('.percent-change');
    if (percentChange) {
        const isPositive = change > 0;
        percentChange.innerHTML = `
            <i data-feather="trend-${isPositive ? 'up' : 'down'}" class="w-4 h-4 inline"></i>
            ${Math.abs((change / currentBalance * 100)).toFixed(2)}%
        `;
        percentChange.className = `percent-change text-sm font-medium flex items-center gap-1 ${isPositive ? 'text-emerald-500' : 'text-red-500'}`;
        feather.replace();
    }
}, 5000);

// Initialize
document.addEventListener('DOMContentLoaded', () => {
    renderChart();
    feather.replace();
    
    // Add keyboard shortcuts
    document.addEventListener('keydown', (e) => {
        if (e.key === 'Escape') closeModal();
    });
});

// Export functions for global access
window.themeToggle = themeToggle;
window.openModal = openModal;
window.closeModal = closeModal;
window.handleSend = handleSend;
window.copyAddress = copyAddress;
window.showToast = showToast;