// Products page JavaScript

let routes = {};
let csrfToken = '';

// Initialize on page load
document.addEventListener('DOMContentLoaded', function() {
    if (window.productRoutes) {
        routes = window.productRoutes;
        csrfToken = document.querySelector('meta[name="csrf-token"]')?.content || '';
    }
    
    // Attach event listeners to buttons
    const fixCategoryProductsBtn = document.getElementById('fixCategoryProductsBtn');
    if (fixCategoryProductsBtn) {
        fixCategoryProductsBtn.addEventListener('click', fixCategoryProducts);
    }
});

function startProductMigration(dryRun) {
    const button = dryRun ? document.getElementById('dryRunProductMigrationBtn') : document.getElementById('startProductMigrationBtn');
    const otherButton = dryRun ? document.getElementById('startProductMigrationBtn') : document.getElementById('dryRunProductMigrationBtn');
    const originalText = button.textContent;
    button.disabled = true;
    otherButton.disabled = true;
    button.textContent = dryRun ? 'Running Dry Run...' : 'Migrating...';
    button.style.cursor = 'not-allowed';

    const logContent = document.getElementById('productMigrationLogContent');
    logContent.innerHTML = '<div class="log-entry">' + (dryRun ? 'Running dry run...' : 'Starting migration...') + '</div>';

    fetch(routes.migrateProducts, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        },
        body: JSON.stringify({ dry_run: dryRun })
    })
    .then(response => response.json())
    .then(data => {
        button.disabled = false;
        otherButton.disabled = false;
        button.textContent = originalText;
        button.style.cursor = 'pointer';

        if (data.success) {
            const successEntry = document.createElement('div');
            successEntry.className = 'log-entry success';
            successEntry.textContent = `✓ ${dryRun ? 'Dry run' : 'Migration'} completed! Added: ${data.added || 0}, Updated: ${data.updated || 0}, Errors: ${data.errors || 0}`;
            logContent.appendChild(successEntry);

            if (data.log && data.log.length > 0) {
                data.log.forEach(log => {
                    const entry = document.createElement('div');
                    entry.className = 'log-entry ' + (log.includes('ERROR') ? 'error' : 'success');
                    entry.textContent = log;
                    logContent.appendChild(entry);
                });
            }

            if (data.missing_attributes && data.missing_attributes.length > 0) {
                const missingSection = document.getElementById('missingAttributesSection');
                const tbody = document.getElementById('missingAttributesTableBody');
                tbody.innerHTML = '';
                data.missing_attributes.forEach(attr => {
                    const row = document.createElement('tr');
                    row.innerHTML = `
                        <td>${attr.attribute_code}</td>
                        <td>${attr.frontend_label || 'N/A'}</td>
                        <td>${attr.backend_type || 'N/A'}</td>
                    `;
                    tbody.appendChild(row);
                });
                missingSection.style.display = 'block';
            }

            const logContainer = document.getElementById('productMigrationLogContainer');
            logContainer.scrollTop = logContainer.scrollHeight;
        } else {
            const errorEntry = document.createElement('div');
            errorEntry.className = 'log-entry error';
            errorEntry.textContent = '✗ ' + (dryRun ? 'Dry run' : 'Migration') + ' failed: ' + (data.message || 'Unknown error');
            logContent.appendChild(errorEntry);
        }
    })
    .catch(error => {
        button.disabled = false;
        otherButton.disabled = false;
        button.textContent = originalText;
        button.style.cursor = 'pointer';

        const errorEntry = document.createElement('div');
        errorEntry.className = 'log-entry error';
        errorEntry.textContent = '✗ Error: ' + error.message;
        logContent.appendChild(errorEntry);
    });
}

function deleteM2Product(productId, productName, productSku) {
    if (!confirm(`Are you sure you want to delete product "${productName}" (SKU: ${productSku})?`)) {
        return;
    }

    const url = routes.deleteProduct.replace(':id', productId);
    
    fetch(url, {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        }
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('Product deleted successfully!');
            location.reload();
        } else {
            alert('Error: ' + (data.message || 'Failed to delete product'));
        }
    })
    .catch(error => {
        alert('Error: ' + error.message);
    });
}

function deleteProductsAboveM1Max() {
    if (!confirm('Are you sure you want to delete all Magento 2 products with entity_id greater than the maximum Magento 1 product ID? This action cannot be undone.')) {
        return;
    }

    const button = document.getElementById('deleteProductsAboveM1MaxBtn');
    const originalText = button.textContent;
    button.disabled = true;
    button.textContent = 'Deleting...';

    fetch(routes.deleteProductsAboveM1Max, {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        }
    })
    .then(response => response.json())
    .then(data => {
        button.disabled = false;
        button.textContent = originalText;

        if (data.success) {
            alert(`Successfully deleted ${data.deleted || 0} products.`);
            location.reload();
        } else {
            alert('Error: ' + (data.message || 'Failed to delete products'));
        }
    })
    .catch(error => {
        button.disabled = false;
        button.textContent = originalText;
        alert('Error: ' + error.message);
    });
}

function syncProductCategories() {
    if (!confirm('Are you sure you want to sync product category assignments from Magento 1 to Magento 2?')) {
        return;
    }

    const button = document.getElementById('syncProductCategoriesBtn');
    const originalText = button.textContent;
    button.disabled = true;
    button.textContent = 'Syncing...';

    fetch(routes.syncProductCategories, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        }
    })
    .then(response => response.json())
    .then(data => {
        button.disabled = false;
        button.textContent = originalText;

        if (data.success) {
            alert(`Sync completed! Updated: ${data.updated || 0}, Skipped: ${data.skipped || 0}, Errors: ${data.errors || 0}`);
        } else {
            alert('Error: ' + (data.message || 'Sync failed'));
        }
    })
    .catch(error => {
        button.disabled = false;
        button.textContent = originalText;
        alert('Error: ' + error.message);
    });
}

function fixCategoryProducts() {
    if (!confirm('Are you sure you want to fix category products? This will add missing products to the catalog_category_product table based on their category_ids attribute in Magento 2.')) {
        return;
    }

    const button = document.getElementById('fixCategoryProductsBtn');
    const logContainer = document.getElementById('fixCategoryProductsLogContainer');
    const logContent = document.getElementById('fixCategoryProductsLogContent');
    
    if (!button) {
        console.error('fixCategoryProductsBtn not found');
        return;
    }
    
    if (!routes.fixCategoryProducts) {
        console.error('routes.fixCategoryProducts not found', routes);
        alert('Error: Route not configured. Please refresh the page.');
        return;
    }
    
    const originalText = button.textContent;
    button.disabled = true;
    button.textContent = 'Fixing...';
    logContainer.style.display = 'block';
    logContent.innerHTML = '<div class="log-entry">Starting fix process...</div>';

    fetch(routes.fixCategoryProducts, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        }
    })
    .then(response => response.json())
    .then(data => {
        button.disabled = false;
        button.textContent = originalText;

        if (data.success) {
            const successEntry = document.createElement('div');
            successEntry.className = 'log-entry success';
            successEntry.textContent = `✓ Fix completed! Added: ${data.added || 0}, Skipped: ${data.skipped || 0}, Errors: ${data.errors || 0}`;
            logContent.appendChild(successEntry);

            if (data.log && data.log.length > 0) {
                data.log.forEach(log => {
                    const entry = document.createElement('div');
                    entry.className = 'log-entry ' + (log.includes('ERROR') ? 'error' : (log.includes('ADDED') ? 'success' : 'info'));
                    entry.textContent = log;
                    logContent.appendChild(entry);
                });
            }

            logContent.scrollTop = logContent.scrollHeight;
        } else {
            const errorEntry = document.createElement('div');
            errorEntry.className = 'log-entry error';
            errorEntry.textContent = '✗ Fix failed: ' + (data.message || 'Unknown error');
            logContent.appendChild(errorEntry);
        }
    })
    .catch(error => {
        button.disabled = false;
        button.textContent = originalText;

        const errorEntry = document.createElement('div');
        errorEntry.className = 'log-entry error';
        errorEntry.textContent = '✗ Error: ' + error.message;
        logContent.appendChild(errorEntry);
    });
}

function loadM1CategoryTreeWithProducts() {
    const container = document.getElementById('m1-category-products-tree-container');
    if (!container) return;
    
    container.innerHTML = '<div class="tree-loading">Loading categories and products...</div>';

    fetch(routes.magento1CategoryTreeWithProducts)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                container.innerHTML = '';
                if (data.tree && data.tree.length > 0) {
                    renderCategoryTreeWithProducts(container, data.tree);
                } else {
                    container.innerHTML = '<div class="tree-loading">No categories found</div>';
                }
            } else {
                container.innerHTML = `<div class="tree-error">Error: ${data.message || 'Failed to load categories'}</div>`;
            }
        })
        .catch(error => {
            container.innerHTML = `<div class="tree-error">Error: ${error.message}</div>`;
        });
}

function loadM2CategoryTreeWithProducts() {
    const container = document.getElementById('m2-category-products-tree-container');
    if (!container) return;
    
    container.innerHTML = '<div class="tree-loading">Loading categories and products...</div>';

    fetch(routes.magento2CategoryTreeWithProducts)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                container.innerHTML = '';
                if (data.tree && data.tree.length > 0) {
                    renderCategoryTreeWithProducts(container, data.tree);
                } else {
                    container.innerHTML = '<div class="tree-loading">No categories found</div>';
                }
            } else {
                container.innerHTML = `<div class="tree-error">Error: ${data.message || 'Failed to load categories'}</div>`;
            }
        })
        .catch(error => {
            container.innerHTML = `<div class="tree-error">Error: ${error.message}</div>`;
        });
}

function renderCategoryTreeWithProducts(container, tree) {
    tree.forEach(node => {
        const nodeElement = createCategoryWithProductsNode(node);
        container.appendChild(nodeElement);
    });
}

function toggleNode(toggleElement) {
    const nodeItem = toggleElement.parentElement;
    const nodeDiv = nodeItem.parentElement;
    const childrenDivs = nodeDiv.querySelectorAll('.tree-children');

    if (childrenDivs.length > 0) {
        let isExpanded = false;
        childrenDivs.forEach(div => {
            if (div.style.display !== 'none') {
                isExpanded = true;
            }
        });

        if (isExpanded) {
            childrenDivs.forEach(div => {
                div.style.display = 'none';
            });
            toggleElement.classList.remove('expanded');
            toggleElement.classList.add('collapsed');
        } else {
            childrenDivs.forEach(div => {
                div.style.display = 'block';
            });
            toggleElement.classList.remove('collapsed');
            toggleElement.classList.add('expanded');
        }
    }
}

function createCategoryWithProductsNode(node) {
    const nodeDiv = document.createElement('div');
    nodeDiv.className = 'tree-node';
    const hasChildren = node.children && node.children.length > 0;
    const hasProducts = node.products && node.products.length > 0;
    const productCount = node.product_count !== undefined ? node.product_count : (node.products ? node.products.length : 0);

    const itemDiv = document.createElement('div');
    itemDiv.className = 'tree-node-item';

    const toggle = document.createElement('span');
    toggle.className = (hasChildren || hasProducts) ? 'tree-toggle collapsed' : 'tree-toggle leaf';
    if (hasChildren || hasProducts) {
        toggle.onclick = function(e) {
            e.stopPropagation();
            toggleNode(this);
        };
    }

    const label = document.createElement('div');
    label.className = 'tree-label';

    const labelText = document.createElement('span');
    labelText.className = 'tree-label-text';
    labelText.textContent = `[${node.id}] ${node.name || 'Unnamed Category'} (${productCount} products)`;

    const badge = document.createElement('span');
    badge.className = `tree-badge ${node.is_active ? 'active' : 'inactive'}`;
    badge.textContent = node.is_active ? 'Active' : 'Inactive';

    label.appendChild(labelText);
    label.appendChild(badge);

    itemDiv.appendChild(toggle);
    itemDiv.appendChild(label);
    nodeDiv.appendChild(itemDiv);

    // Add products section if products exist
    if (hasProducts) {
        const productsDiv = document.createElement('div');
        productsDiv.className = 'tree-children';
        productsDiv.style.display = 'none';

        const productsHeader = document.createElement('div');
        productsHeader.style.cssText = 'padding: 8px 12px; font-weight: 600; color: #667eea; background: #f0f0f0; border-radius: 4px; margin: 5px 0;';
        productsHeader.textContent = `Products (${node.products.length}):`;
        productsDiv.appendChild(productsHeader);

        node.products.forEach(product => {
            const productDiv = document.createElement('div');
            productDiv.style.cssText = 'padding: 6px 12px 6px 30px; font-size: 0.9em; color: #666; border-left: 2px solid #e0e0e0; margin-left: 20px;';
            productDiv.textContent = `ID: ${product.id || product.product_id || 'N/A'} | SKU: ${product.sku || 'N/A'} | Name: ${product.name || 'Unnamed Product'}`;
            productsDiv.appendChild(productDiv);
        });

        nodeDiv.appendChild(productsDiv);
    }

    // Add children
    if (hasChildren) {
        const childrenDiv = document.createElement('div');
        childrenDiv.className = 'tree-children';
        childrenDiv.style.display = 'none';
        node.children.forEach(child => {
            childrenDiv.appendChild(createCategoryWithProductsNode(child));
        });
        nodeDiv.appendChild(childrenDiv);
    }

    return nodeDiv;
}

// Make functions available globally
window.startProductMigration = startProductMigration;
window.deleteM2Product = deleteM2Product;
window.deleteProductsAboveM1Max = deleteProductsAboveM1Max;
window.syncProductCategories = syncProductCategories;
window.fixCategoryProducts = fixCategoryProducts;
window.loadM1CategoryTreeWithProducts = loadM1CategoryTreeWithProducts;
window.loadM2CategoryTreeWithProducts = loadM2CategoryTreeWithProducts;