// Simple Dashboard Drag and Drop
let isCustomizing = false;
let draggedCard = null;

// Initialize on page load
document.addEventListener('DOMContentLoaded', function () {
    loadLayout();
});

function toggleCustomize() {
    const btn = document.getElementById('customize-btn');
    const help = document.getElementById('customization-help');
    const cards = document.querySelectorAll('.draggable-card');
    const handles = document.querySelectorAll('.drag-handle');

    isCustomizing = !isCustomizing;

    if (isCustomizing) {
        btn.textContent = '💾 Save Layout';
        btn.classList.add('saving');
        help.style.display = 'block';

        // Enable dragging
        cards.forEach(card => {
            card.draggable = true;
            card.classList.add('customizable');
            card.addEventListener('dragstart', handleDragStart);
            card.addEventListener('dragover', handleDragOver);
            card.addEventListener('drop', handleDrop);
            card.addEventListener('dragend', handleDragEnd);
        });

        // Show handles
        handles.forEach(handle => handle.style.display = 'block');

    } else {
        btn.textContent = '📝 Customize Layout';
        btn.classList.remove('saving');
        help.style.display = 'none';

        // Disable dragging
        cards.forEach(card => {
            card.draggable = false;
            card.classList.remove('customizable');
            card.removeEventListener('dragstart', handleDragStart);
            card.removeEventListener('dragover', handleDragOver);
            card.removeEventListener('drop', handleDrop);
            card.removeEventListener('dragend', handleDragEnd);
        });

        // Hide handles
        handles.forEach(handle => handle.style.display = 'none');

        // Save the current layout
        saveLayout();
        showMessage('Layout saved!', 'success');
    }
}

function handleDragStart(e) {
    draggedCard = e.target.closest('.draggable-card');
    draggedCard.classList.add('dragging');
    e.dataTransfer.effectAllowed = 'move';
}

function handleDragOver(e) {
    e.preventDefault();
    e.dataTransfer.dropEffect = 'move';

    const card = e.target.closest('.draggable-card');
    if (card && card !== draggedCard) {
        const grid = document.getElementById('dashboard-grid');
        const cards = Array.from(grid.children);
        const draggedIndex = cards.indexOf(draggedCard);
        const targetIndex = cards.indexOf(card);

        if (draggedIndex < targetIndex) {
            grid.insertBefore(draggedCard, card.nextSibling);
        } else {
            grid.insertBefore(draggedCard, card);
        }
    }
}

function handleDrop(e) {
    e.preventDefault();
}

function handleDragEnd(e) {
    if (draggedCard) {
        draggedCard.classList.remove('dragging');
        draggedCard = null;
    }
}

function saveLayout() {
    const cards = document.querySelectorAll('.draggable-card');
    const layout = Array.from(cards).map((card, index) => ({
        id: card.dataset.widgetId,
        position: index
    }));
    localStorage.setItem('dashboard-layout', JSON.stringify(layout));
}

function loadLayout() {
    const saved = localStorage.getItem('dashboard-layout');
    if (!saved) return;

    try {
        const layout = JSON.parse(saved);
        const grid = document.getElementById('dashboard-grid');

        // Sort layout by position
        layout.sort((a, b) => a.position - b.position);

        // Reorder cards
        layout.forEach(item => {
            const card = document.querySelector(`[data-widget-id="${item.id}"]`);
            if (card) grid.appendChild(card);
        });
    } catch (e) {
        console.warn('Failed to load layout:', e);
    }
}

function showMessage(text, type) {
    // Create message element
    const msg = document.createElement('div');
    msg.textContent = text;
    msg.style.cssText = `
        position: fixed;
        top: 20px;
        right: 20px;
        padding: 12px 20px;
        border-radius: 4px;
        color: white;
        font-weight: bold;
        z-index: 10000;
        background: ${type === 'success' ? '#10b981' : '#ef4444'};
        transform: translateX(300px);
        transition: transform 0.3s ease;
    `;

    document.body.appendChild(msg);

    // Show message
    setTimeout(() => msg.style.transform = 'translateX(0)', 100);

    // Hide message
    setTimeout(() => {
        msg.style.transform = 'translateX(300px)';
        setTimeout(() => document.body.removeChild(msg), 300);
    }, 2000);
}