<?php
    session_start();
    require '../../../assets/utils/db_auth.php';
    require '../../../assets/utils/classes/ReportManager.php';

    $month  = $data['month'] ?? date('Y-m');
    $report = new ReportManager($pdo2, $company_id);

    $stats = $report->getDashboardStats($month);

    // Sales stats — query td_order and td_invoice directly
    $month_start = $month . '-01';
    $month_end   = date('Y-m-t', strtotime($month_start));

    // Total orders this month (excluding cancelled)
    $sth = $pdo2->prepare(
        "SELECT COUNT(*), COALESCE(SUM(grand_total), 0)
         FROM td_order
         WHERE company_id  = :company_id
           AND status     != -1
           AND order_date BETWEEN :start AND :end"
    );
    $sth->execute([':company_id' => $company_id, ':start' => $month_start, ':end' => $month_end]);
    [$total_orders, $total_revenue] = $sth->fetch(PDO::FETCH_NUM);

    // Unpaid invoices (status=0 draft + status=1 issued + status=3 overdue)
    $sth = $pdo2->prepare(
        "SELECT COUNT(*) FROM td_invoice
         WHERE company_id = :company_id
           AND doc_type   = 'invoice'
           AND status    IN (0, 1, 3)"
    );
    $sth->execute([':company_id' => $company_id]);
    $unpaid_invoices = (int)$sth->fetchColumn();

    // Pending returns (status=0 draft)
    $sth = $pdo2->prepare(
        "SELECT COUNT(*) FROM td_return
         WHERE company_id = :company_id
           AND status     = 0"
    );
    $sth->execute([':company_id' => $company_id]);
    $pending_returns = (int)$sth->fetchColumn();

    // Stock health breakdown for the Overall Information donut chart
    $low_stock_items = $report->getLowStockItems();
    $critical_count  = count(array_filter($low_stock_items, fn($i) => $i['status'] === 'critical'));
    $warning_count   = count(array_filter($low_stock_items, fn($i) => $i['status'] === 'warning'));
    $total_in_stock  = (int) $report->getTotalProductInStock();
    $healthy_count   = max(0, $total_in_stock - $critical_count - $warning_count);

    $answer['output'] = [
        'total_in'        => $stats['total_in'],
        'total_out'       => $stats['total_out'],
        'active_products' => $stats['active_products'],
        'low_stock'       => count($low_stock_items),
        'total_orders'    => (int)$total_orders,
        'total_revenue'   => (float)$total_revenue,
        'unpaid_invoices' => $unpaid_invoices,
        'pending_returns' => $pending_returns,
        'stock_movement'  => $report->getStockMovementChart(12),
        'most_moved'      => $report->getMostMovedProducts($month),
        'low_stock_items' => $low_stock_items,
        'recent_activity' => $report->getRecentActivity(10),
        'months'          => $report->getAvailableMonths(),
        'stock_health'    => [
            'healthy'  => $healthy_count,
            'warning'  => $warning_count,
            'critical' => $critical_count,
            'total'    => $total_in_stock,
        ],
        'total_products'   => (int) $report->getTotalProduct(),
        'total_contacts'   => (int) $report->getTotalContact(),
        'total_warehouses' => (int) $report->getTotalWarehouse(),
    ];
    $answer['success'] = 1;
    exit(json_encode($answer));
?>