query("SELECT COUNT(*) FROM inventory_items WHERE is_active = 1")->fetchColumn();
$total_value_stmt = $db->query("SELECT SUM(quantity * cost_price) FROM inventory_batches");
$total_value = $total_value_stmt->fetchColumn() ?: 0;
// Low Stock
$low_stock_count = $db->query("
SELECT COUNT(*)
FROM inventory_items i
WHERE (SELECT SUM(quantity) FROM inventory_batches b WHERE b.item_id = i.id) <= i.min_level
")->fetchColumn();
// Expiring Soon (30 days)
$expiring_count = $db->query("
SELECT COUNT(*)
FROM inventory_batches
WHERE expiry_date BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL 30 DAY)
AND quantity > 0
")->fetchColumn();
// Recent Transactions
$recent_transactions = $db->query("
SELECT t.*, i.name_en as item_name
FROM inventory_transactions t
JOIN inventory_items i ON t.item_id = i.id
ORDER BY t.transaction_date DESC
LIMIT 5
")->fetchAll(PDO::FETCH_ASSOC);
?>