// ========================================
// ADMIN PANEL LOGIC
// ========================================

const ADMIN_PASSWORD = 'admin'; // Basic auth explicitly requested for simplicity

document.addEventListener('DOMContentLoaded', () => {
    if (sessionStorage.getItem('adminAuth') === 'true') {
        initAdmin();
    }
});

function checkAdmin() {
    const p = document.getElementById('adminPass').value;
    if (p === ADMIN_PASSWORD) {
        sessionStorage.setItem('adminAuth', 'true');
        initAdmin();
    } else {
        alert("Noto'g'ri parol!");
    }
}

function initAdmin() {
    document.getElementById('adminLogin').style.display = 'none';
    document.getElementById('adminDashboard').style.display = 'flex';
    document.body.style.overflow = 'auto'; // Re-enable scrolling if disabled
    updateStats();
    renderAdminProducts();
    renderAdminOrders();
    loadAdminSettings();
}

function showSection(id, el) {
    document.querySelectorAll('.admin-section').forEach(s => s.style.display = 'none');
    document.querySelectorAll('.admin-nav a').forEach(a => a.classList.remove('active'));
    document.getElementById('section-' + id).style.display = 'block';
    if (el) el.classList.add('active');
}

function updateStats() {
    document.getElementById('statProducts').textContent = PRODUCTS.length;

    // Fetch orders if they exist
    const orders = JSON.parse(localStorage.getItem('mtextile_orders') || '[]');
    document.getElementById('statOrders').textContent = orders.length;

    const revenue = orders.reduce((total, o) => total + (o.totals?.total || 0), 0);
    document.getElementById('statRevenue').textContent = formatPrice(revenue);
}

// --- Settings Logic ---
function loadAdminSettings() {
    try {
        const settings = JSON.parse(localStorage.getItem('mtextile_settings')) || {
            address: '',
            mapIframe: ''
        };
        const addrInput = document.getElementById('settingAddress');
        const mapInput = document.getElementById('settingMap');
        const preview = document.getElementById('settingsMapPreview');

        if (addrInput) addrInput.value = settings.address || '';
        if (mapInput) mapInput.value = settings.mapIframe || '';

        if (settings.mapIframe && preview) {
            preview.innerHTML = settings.mapIframe;
            preview.style.display = 'block';
            // ensure iframe fills container
            const iframe = preview.querySelector('iframe');
            if (iframe) {
                iframe.style.width = '100%';
                iframe.style.height = '100%';
                iframe.style.border = 'none';
            }
        }
    } catch (e) {
        console.error("Sozlamalarni yuklashda xatolik:", e);
    }
}

function saveAdminSettings() {
    const address = document.getElementById('settingAddress').value.trim();
    const mapIframe = document.getElementById('settingMap').value.trim();

    const settings = { address, mapIframe };
    localStorage.setItem('mtextile_settings', JSON.stringify(settings));

    alert("Sozlamalar muvaffaqiyatli saqlandi!");
    loadAdminSettings(); // Refresh preview
}

function renderAdminProducts() {
    const tbody = document.getElementById('adminProductsTable');
    tbody.innerHTML = '';

    PRODUCTS.slice().reverse().forEach(p => {
        const tr = document.createElement('tr');
        tr.innerHTML = `
            <td><img src="${p.images[0]}" alt="${p.name}"></td>
            <td><strong>${p.name}</strong></td>
            <td>${p.category}</td>
            <td>${formatPrice(p.price)}</td>
            <td><span class="badge ${p.inStock ? 'badge-new' : ''}">${p.inStock ? 'Mavjud' : "Tugagan"}</span></td>
            <td>
                <button class="action-btn" onclick="editProduct(${p.id})">✏️</button>
                <button class="action-btn delete" onclick="deleteProduct(${p.id})">🗑️</button>
            </td>
        `;
        tbody.appendChild(tr);
    });
}

function renderAdminOrders() {
    const tbody = document.getElementById('ordersTableBody');
    const orders = JSON.parse(localStorage.getItem('mtextile_orders') || '[]');
    tbody.innerHTML = '';

    if (orders.length === 0) {
        tbody.innerHTML = `<tr><td colspan="5" style="text-align:center;padding:2rem;">Hozircha buyurtmalar yo'q</td></tr>`;
        return;
    }

    const sortedOrders = [...orders].reverse();
    sortedOrders.forEach((o, i) => {
        const customerName = o.customer?.name || o.name || '—';
        const customerPhone = o.customer?.phone || o.phone || '—';
        const orderDate = o.createdAt || o.date;
        const orderTotal = o.totals?.total || o.total || 0;
        const tr = document.createElement('tr');
        tr.innerHTML = `
            <td>#${o.id}</td>
            <td><strong>${customerName}</strong></td>
            <td>${customerPhone}</td>
            <td>${formatPrice(orderTotal)}</td>
            <td>${orderDate ? new Date(orderDate).toLocaleDateString() : '—'}</td>
            <td>
                <select onchange="updateOrderStatus('${o.id}', this.value)" style="padding:4px;border-radius:4px;border:1px solid var(--clr-border);background:var(--clr-surface);color:var(--clr-text-primary);cursor:pointer;">
                    <option value="Kutilmoqda" ${o.status === 'Kutilmoqda' || !o.status ? 'selected' : ''}>Kutilmoqda</option>
                    <option value="Olib ketildi" ${o.status === 'Olib ketildi' ? 'selected' : ''}>Olib ketildi</option>
                    <option value="Bekor qilindi" ${o.status === 'Bekor qilindi' ? 'selected' : ''}>Bekor qilindi</option>
                </select>
            </td>
        `;
        tbody.appendChild(tr);
    });
}

function updateOrderStatus(orderId, newStatus) {
    const orders = JSON.parse(localStorage.getItem('mtextile_orders') || '[]');
    const index = orders.findIndex(o => o.id === orderId);
    if (index > -1) {
        orders[index].status = newStatus;
        localStorage.setItem('mtextile_orders', JSON.stringify(orders));
    }
}

function filterAdminProducts(query) {
    const q = query.toLowerCase().trim();
    const rows = document.querySelectorAll('#adminProductsTable tr');
    rows.forEach(row => {
        const nameColumn = row.children[1];
        if (!nameColumn) return;
        const name = nameColumn.textContent.toLowerCase();
        row.style.display = name.includes(q) ? '' : 'none';
    });
}

// ========================================
// CRUD OPERATIONS
// ========================================

const modal = document.getElementById('productModal');
const form = document.getElementById('productForm');

function openProductModal() {
    form.reset();
    document.getElementById('pId').value = '';
    document.getElementById('modalTitle').textContent = "Mahsulot qo'shish";
    modal.style.display = 'flex';
}

function closeProductModal() {
    modal.style.display = 'none';
}

function editProduct(id) {
    const p = getProductById(id);
    if (!p) return;

    document.getElementById('pId').value = p.id;
    document.getElementById('pName').value = p.name;
    document.getElementById('pCat').value = p.category;
    document.getElementById('pSubCat').value = p.subcategory;
    document.getElementById('pPrice').value = p.price;
    document.getElementById('pOldPrice').value = p.oldPrice || '';
    document.getElementById('pImg').value = p.images[0];
    document.getElementById('pDesc').value = p.description;
    document.getElementById('pNew').checked = p.isNew;
    document.getElementById('pFeat').checked = p.isFeatured;

    document.getElementById('modalTitle').textContent = "Mahsulotni tahrirlash";
    modal.style.display = 'flex';
}

function deleteProduct(id) {
    if (confirm('Rostdan ham bu mahsulotni o\'chirmoqchimisiz?')) {
        PRODUCTS = PRODUCTS.filter(p => p.id !== id);
        saveProducts();
    }
}

form.addEventListener('submit', (e) => {
    e.preventDefault();

    const id = document.getElementById('pId').value;
    const price = parseInt(document.getElementById('pPrice').value);
    const oldPrice = parseInt(document.getElementById('pOldPrice').value) || null;
    let discount = 0;
    if (oldPrice && oldPrice > price) {
        discount = Math.round(((oldPrice - price) / oldPrice) * 100);
    }

    const pData = {
        name: document.getElementById('pName').value,
        category: document.getElementById('pCat').value,
        subcategory: document.getElementById('pSubCat').value,
        price: price,
        oldPrice: oldPrice,
        discount: discount,
        images: [document.getElementById('pImg').value],
        description: document.getElementById('pDesc').value,
        isNew: document.getElementById('pNew').checked,
        isFeatured: document.getElementById('pFeat').checked,
        // Default properties for new products
        sizes: ["S", "M", "L", "XL"],
        colors: ["qora", "oq"],
        rating: 5.0,
        reviewCount: 0,
        inStock: true
    };

    if (id) {
        // Edit existing
        const index = PRODUCTS.findIndex(p => p.id === parseInt(id));
        if (index > -1) {
            PRODUCTS[index] = { ...PRODUCTS[index], ...pData };
        }
    } else {
        // Add new
        pData.id = Date.now(); // Generate unique ID
        PRODUCTS.push(pData);
    }

    saveProducts();
    closeProductModal();
});

function saveProducts() {
    localStorage.setItem('mtextile_products', JSON.stringify(PRODUCTS));
    updateStats();
    renderAdminProducts();
}