<?php include('include/headscript.php'); ?>

<?php
/*
 * TRFgo - Samples management page
 * This page manages the product/sample identity card.
 */

function e($value)
{
    return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
}

function jsonResponse(array $payload): void
{
    header('Content-Type: application/json');
    echo json_encode($payload);
    exit;
}

function generateSampleCode(PDO $db, int $idcompany): string
{
    $year = date('Y');

    $stmt = $db->prepare("
        SELECT COUNT(*)
        FROM samples
        WHERE idcompany = :idcompany
        AND YEAR(created_at) = :year
    ");
    $stmt->execute([
        ':idcompany' => $idcompany,
        ':year' => $year,
    ]);

    $nextNumber = ((int) $stmt->fetchColumn()) + 1;

    return 'SMP-' . $year . '-' . str_pad((string) $nextNumber, 5, '0', STR_PAD_LEFT);
}

$sampleStatuses = [
    'draft' => 'Draft',
    'active' => 'Active',
    'archived' => 'Archived',
    'submitted' => 'Submitted',
    'under_testing' => 'Under Testing',
    'completed' => 'Completed',
    'cancelled' => 'Cancelled',
];

$sampleSources = [
    'manual' => 'Manual',
    'xls_import' => 'XLS Import',
    'json_import' => 'JSON Import',
    'api' => 'API',
    'smarttrf' => 'SmartTRF',
];

/*
 * AJAX actions.
 */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action'])) {
    $action = $_POST['action'];

    try {
        if ($action === 'save_sample') {
            $idsample = isset($_POST['idsample']) ? (int) $_POST['idsample'] : 0;
            $idcompany = isset($_POST['idcompany']) ? (int) $_POST['idcompany'] : 0;
            $idbrand = !empty($_POST['idbrand']) ? (int) $_POST['idbrand'] : null;
            $iddepartment = !empty($_POST['iddepartment']) ? (int) $_POST['iddepartment'] : null;
            $idproducer = !empty($_POST['idproducer']) ? (int) $_POST['idproducer'] : null;
            $idsupplier = !empty($_POST['idsupplier']) ? (int) $_POST['idsupplier'] : null;

            $sampleCode = trim($_POST['sample_code'] ?? '');
            $externalSampleId = trim($_POST['external_sample_id'] ?? '');
            $articleNo = trim($_POST['article_no'] ?? '');
            $poNo = trim($_POST['po_no'] ?? '');
            $season = trim($_POST['season'] ?? '');
            $styleNo = trim($_POST['style_no'] ?? '');
            $styleName = trim($_POST['style_name'] ?? '');
            $model = trim($_POST['model'] ?? '');
            $sampleDescription = trim($_POST['sample_description'] ?? '');
            $productCategory = trim($_POST['product_category'] ?? '');
            $productType = trim($_POST['product_type'] ?? '');
            $color = trim($_POST['color'] ?? '');
            $size = trim($_POST['size'] ?? '');
            $gender = trim($_POST['gender'] ?? '');
            $ageGroup = trim($_POST['age_group'] ?? '');
            $fiberContent = trim($_POST['fiber_content'] ?? '');
            $materialDescription = trim($_POST['material_description'] ?? '');
            $claimedWeight = trim($_POST['claimed_weight'] ?? '');
            $productStandard = trim($_POST['product_standard'] ?? '');
            $productionStage = trim($_POST['production_stage'] ?? '');
            $countryOfOrigin = !empty($_POST['country_of_origin']) ? (int) $_POST['country_of_origin'] : null;
            $status = $_POST['status'] ?? 'draft';

            if ($idcompany <= 0) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Company is required.'
                ]);
            }

            if ($sampleDescription === '') {
                jsonResponse([
                    'success' => false,
                    'message' => 'Sample description is required.'
                ]);
            }

            if (!array_key_exists($status, $sampleStatuses)) {
                $status = 'draft';
            }

            /*
             * Check company exists.
             */
            $stmt = $db->prepare("
                SELECT COUNT(*)
                FROM companies
                WHERE idcompany = :idcompany
            ");
            $stmt->execute([':idcompany' => $idcompany]);

            if ((int) $stmt->fetchColumn() === 0) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Selected company does not exist.'
                ]);
            }

            /*
             * Generate sample code if empty.
             */
            if ($sampleCode === '') {
                $sampleCode = generateSampleCode($db, $idcompany);
            }

            /*
             * Check brand belongs to company.
             */
            if ($idbrand !== null) {
                $stmt = $db->prepare("
                    SELECT COUNT(*)
                    FROM brands
                    WHERE idbrand = :idbrand
                    AND idcompany = :idcompany
                ");
                $stmt->execute([
                    ':idbrand' => $idbrand,
                    ':idcompany' => $idcompany,
                ]);

                if ((int) $stmt->fetchColumn() === 0) {
                    jsonResponse([
                        'success' => false,
                        'message' => 'Selected brand does not belong to the selected company.'
                    ]);
                }
            }

            /*
             * Check department belongs to company and is compatible with selected brand.
             */
            if ($iddepartment !== null) {
                if ($idbrand !== null) {
                    $stmt = $db->prepare("
                        SELECT COUNT(*)
                        FROM departments
                        WHERE iddepartment = :iddepartment
                        AND idcompany = :idcompany
                        AND (idbrand = :idbrand OR idbrand IS NULL)
                    ");
                    $stmt->execute([
                        ':iddepartment' => $iddepartment,
                        ':idcompany' => $idcompany,
                        ':idbrand' => $idbrand,
                    ]);
                } else {
                    $stmt = $db->prepare("
                        SELECT COUNT(*)
                        FROM departments
                        WHERE iddepartment = :iddepartment
                        AND idcompany = :idcompany
                    ");
                    $stmt->execute([
                        ':iddepartment' => $iddepartment,
                        ':idcompany' => $idcompany,
                    ]);
                }

                if ((int) $stmt->fetchColumn() === 0) {
                    jsonResponse([
                        'success' => false,
                        'message' => 'Selected department is not compatible with the selected company/brand.'
                    ]);
                }
            }

            /*
             * Check producer/supplier belong to the same company.
             */
            foreach (
                [
                    'producer' => $idproducer,
                    'supplier' => $idsupplier,
                ] as $partnerLabel => $partnerId
            ) {
                if ($partnerId !== null) {
                    $stmt = $db->prepare("
                        SELECT COUNT(*)
                        FROM business_partners
                        WHERE idpartner = :idpartner
                        AND idcompany = :idcompany
                    ");
                    $stmt->execute([
                        ':idpartner' => $partnerId,
                        ':idcompany' => $idcompany,
                    ]);

                    if ((int) $stmt->fetchColumn() === 0) {
                        jsonResponse([
                            'success' => false,
                            'message' => 'Selected ' . $partnerLabel . ' does not belong to the selected company.'
                        ]);
                    }
                }
            }

            /*
             * Check duplicate sample code inside the same company.
             */
            if ($idsample > 0) {
                $stmt = $db->prepare("
                    SELECT COUNT(*)
                    FROM samples
                    WHERE idcompany = :idcompany
                    AND sample_code = :sample_code
                    AND idsample <> :idsample
                ");
                $stmt->execute([
                    ':idcompany' => $idcompany,
                    ':sample_code' => $sampleCode,
                    ':idsample' => $idsample,
                ]);
            } else {
                $stmt = $db->prepare("
                    SELECT COUNT(*)
                    FROM samples
                    WHERE idcompany = :idcompany
                    AND sample_code = :sample_code
                ");
                $stmt->execute([
                    ':idcompany' => $idcompany,
                    ':sample_code' => $sampleCode,
                ]);
            }

            if ((int) $stmt->fetchColumn() > 0) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Sample code already exists for this company.'
                ]);
            }

            $oldStatus = null;

            if ($idsample > 0) {
                $stmt = $db->prepare("
                    SELECT status
                    FROM samples
                    WHERE idsample = :idsample
                    LIMIT 1
                ");
                $stmt->execute([':idsample' => $idsample]);
                $oldStatus = $stmt->fetchColumn();

                $sql = "
                    UPDATE samples
                    SET
                        idcompany = :idcompany,
                        idbrand = :idbrand,
                        iddepartment = :iddepartment,
                        idproducer = :idproducer,
                        idsupplier = :idsupplier,
                        sample_code = :sample_code,
                        external_sample_id = :external_sample_id,
                        article_no = :article_no,
                        po_no = :po_no,
                        season = :season,
                        style_no = :style_no,
                        style_name = :style_name,
                        model = :model,
                        sample_description = :sample_description,
                        product_category = :product_category,
                        product_type = :product_type,
                        color = :color,
                        size = :size,
                        gender = :gender,
                        age_group = :age_group,
                        fiber_content = :fiber_content,
                        material_description = :material_description,
                        claimed_weight = :claimed_weight,
                        product_standard = :product_standard,
                        production_stage = :production_stage,
                        country_of_origin = :country_of_origin,
                        status = :status,
                        updated_at = NOW()
                    WHERE idsample = :idsample
                ";

                $stmt = $db->prepare($sql);
                $stmt->execute([
                    ':idcompany' => $idcompany,
                    ':idbrand' => $idbrand,
                    ':iddepartment' => $iddepartment,
                    ':idproducer' => $idproducer,
                    ':idsupplier' => $idsupplier,
                    ':sample_code' => $sampleCode,
                    ':external_sample_id' => $externalSampleId !== '' ? $externalSampleId : null,
                    ':article_no' => $articleNo !== '' ? $articleNo : null,
                    ':po_no' => $poNo !== '' ? $poNo : null,
                    ':season' => $season !== '' ? $season : null,
                    ':style_no' => $styleNo !== '' ? $styleNo : null,
                    ':style_name' => $styleName !== '' ? $styleName : null,
                    ':model' => $model !== '' ? $model : null,
                    ':sample_description' => $sampleDescription,
                    ':product_category' => $productCategory !== '' ? $productCategory : null,
                    ':product_type' => $productType !== '' ? $productType : null,
                    ':color' => $color !== '' ? $color : null,
                    ':size' => $size !== '' ? $size : null,
                    ':gender' => $gender !== '' ? $gender : null,
                    ':age_group' => $ageGroup !== '' ? $ageGroup : null,
                    ':fiber_content' => $fiberContent !== '' ? $fiberContent : null,
                    ':material_description' => $materialDescription !== '' ? $materialDescription : null,
                    ':claimed_weight' => $claimedWeight !== '' ? $claimedWeight : null,
                    ':product_standard' => $productStandard !== '' ? $productStandard : null,
                    ':production_stage' => $productionStage !== '' ? $productionStage : null,
                    ':country_of_origin' => $countryOfOrigin,
                    ':status' => $status,
                    ':idsample' => $idsample,
                ]);

                if ($oldStatus !== $status) {
                    $stmt = $db->prepare("
                        INSERT INTO sample_status_history (
                            idsample,
                            old_status,
                            new_status,
                            note,
                            changed_by,
                            created_at
                        ) VALUES (
                            :idsample,
                            :old_status,
                            :new_status,
                            :note,
                            :changed_by,
                            NOW()
                        )
                    ");
                    $stmt->execute([
                        ':idsample' => $idsample,
                        ':old_status' => $oldStatus,
                        ':new_status' => $status,
                        ':note' => 'Status changed from sample form.',
                        ':changed_by' => $iduserlogin,
                    ]);
                }

                jsonResponse([
                    'success' => true,
                    'message' => 'Sample updated successfully.'
                ]);
            }

            $sql = "
                INSERT INTO samples (
                    idcompany,
                    idbrand,
                    iddepartment,
                    idproducer,
                    idsupplier,
                    sample_code,
                    external_sample_id,
                    article_no,
                    po_no,
                    season,
                    style_no,
                    style_name,
                    model,
                    sample_description,
                    product_category,
                    product_type,
                    color,
                    size,
                    gender,
                    age_group,
                    fiber_content,
                    material_description,
                    claimed_weight,
                    product_standard,
                    production_stage,
                    country_of_origin,
                    status,
                    source,
                    created_by,
                    created_at,
                    updated_at
                ) VALUES (
                    :idcompany,
                    :idbrand,
                    :iddepartment,
                    :idproducer,
                    :idsupplier,
                    :sample_code,
                    :external_sample_id,
                    :article_no,
                    :po_no,
                    :season,
                    :style_no,
                    :style_name,
                    :model,
                    :sample_description,
                    :product_category,
                    :product_type,
                    :color,
                    :size,
                    :gender,
                    :age_group,
                    :fiber_content,
                    :material_description,
                    :claimed_weight,
                    :product_standard,
                    :production_stage,
                    :country_of_origin,
                    :status,
                    'manual',
                    :created_by,
                    NOW(),
                    NOW()
                )
            ";

            $stmt = $db->prepare($sql);
            $stmt->execute([
                ':idcompany' => $idcompany,
                ':idbrand' => $idbrand,
                ':iddepartment' => $iddepartment,
                ':idproducer' => $idproducer,
                ':idsupplier' => $idsupplier,
                ':sample_code' => $sampleCode,
                ':external_sample_id' => $externalSampleId !== '' ? $externalSampleId : null,
                ':article_no' => $articleNo !== '' ? $articleNo : null,
                ':po_no' => $poNo !== '' ? $poNo : null,
                ':season' => $season !== '' ? $season : null,
                ':style_no' => $styleNo !== '' ? $styleNo : null,
                ':style_name' => $styleName !== '' ? $styleName : null,
                ':model' => $model !== '' ? $model : null,
                ':sample_description' => $sampleDescription,
                ':product_category' => $productCategory !== '' ? $productCategory : null,
                ':product_type' => $productType !== '' ? $productType : null,
                ':color' => $color !== '' ? $color : null,
                ':size' => $size !== '' ? $size : null,
                ':gender' => $gender !== '' ? $gender : null,
                ':age_group' => $ageGroup !== '' ? $ageGroup : null,
                ':fiber_content' => $fiberContent !== '' ? $fiberContent : null,
                ':material_description' => $materialDescription !== '' ? $materialDescription : null,
                ':claimed_weight' => $claimedWeight !== '' ? $claimedWeight : null,
                ':product_standard' => $productStandard !== '' ? $productStandard : null,
                ':production_stage' => $productionStage !== '' ? $productionStage : null,
                ':country_of_origin' => $countryOfOrigin,
                ':status' => $status,
                ':created_by' => $iduserlogin,
            ]);

            $newSampleId = (int) $db->lastInsertId();

            $stmt = $db->prepare("
                INSERT INTO sample_status_history (
                    idsample,
                    old_status,
                    new_status,
                    note,
                    changed_by,
                    created_at
                ) VALUES (
                    :idsample,
                    NULL,
                    :new_status,
                    :note,
                    :changed_by,
                    NOW()
                )
            ");
            $stmt->execute([
                ':idsample' => $newSampleId,
                ':new_status' => $status,
                ':note' => 'Sample created.',
                ':changed_by' => $iduserlogin,
            ]);

            jsonResponse([
                'success' => true,
                'message' => 'Sample created successfully.'
            ]);
        }

        if ($action === 'get_sample') {
            $idsample = isset($_POST['idsample']) ? (int) $_POST['idsample'] : 0;

            if ($idsample <= 0) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Invalid sample id.'
                ]);
            }

            $stmt = $db->prepare("
                SELECT *
                FROM samples
                WHERE idsample = :idsample
                LIMIT 1
            ");
            $stmt->execute([':idsample' => $idsample]);
            $sample = $stmt->fetch(PDO::FETCH_ASSOC);

            if (!$sample) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Sample not found.'
                ]);
            }

            jsonResponse([
                'success' => true,
                'sample' => $sample
            ]);
        }

        if ($action === 'change_sample_status') {
            $idsample = isset($_POST['idsample']) ? (int) $_POST['idsample'] : 0;
            $status = $_POST['status'] ?? 'archived';

            if ($idsample <= 0 || !array_key_exists($status, $sampleStatuses)) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Invalid request.'
                ]);
            }

            $stmt = $db->prepare("
                SELECT status
                FROM samples
                WHERE idsample = :idsample
                LIMIT 1
            ");
            $stmt->execute([':idsample' => $idsample]);
            $oldStatus = $stmt->fetchColumn();

            if (!$oldStatus) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Sample not found.'
                ]);
            }

            $stmt = $db->prepare("
                UPDATE samples
                SET status = :status, updated_at = NOW()
                WHERE idsample = :idsample
            ");
            $stmt->execute([
                ':status' => $status,
                ':idsample' => $idsample,
            ]);

            if ($oldStatus !== $status) {
                $stmt = $db->prepare("
                    INSERT INTO sample_status_history (
                        idsample,
                        old_status,
                        new_status,
                        note,
                        changed_by,
                        created_at
                    ) VALUES (
                        :idsample,
                        :old_status,
                        :new_status,
                        :note,
                        :changed_by,
                        NOW()
                    )
                ");
                $stmt->execute([
                    ':idsample' => $idsample,
                    ':old_status' => $oldStatus,
                    ':new_status' => $status,
                    ':note' => 'Status changed from sample list.',
                    ':changed_by' => $iduserlogin,
                ]);
            }

            jsonResponse([
                'success' => true,
                'message' => 'Sample status updated successfully.'
            ]);
        }

        if ($action === 'delete_sample') {
            $idsample = isset($_POST['idsample']) ? (int) $_POST['idsample'] : 0;

            if ($idsample <= 0) {
                jsonResponse([
                    'success' => false,
                    'message' => 'Invalid sample id.'
                ]);
            }

            /*
             * Safe delete:
             * Do not delete samples with BOM parts, photos or documents.
             */
            $stmt = $db->prepare("
                SELECT
                    (SELECT COUNT(*) FROM sample_parts WHERE idsample = :idsample1) AS parts_count,
                    (SELECT COUNT(*) FROM sample_photos WHERE idsample = :idsample2) AS photos_count,
                    (SELECT COUNT(*) FROM sample_documents WHERE idsample = :idsample3) AS documents_count
            ");
            $stmt->execute([
                ':idsample1' => $idsample,
                ':idsample2' => $idsample,
                ':idsample3' => $idsample,
            ]);

            $usage = $stmt->fetch(PDO::FETCH_ASSOC);

            if (
                (int) $usage['parts_count'] > 0 ||
                (int) $usage['photos_count'] > 0 ||
                (int) $usage['documents_count'] > 0
            ) {
                jsonResponse([
                    'success' => false,
                    'message' => 'This sample has BOM parts, photos or documents. Set it as archived instead of deleting it.'
                ]);
            }

            $stmt = $db->prepare("
                DELETE FROM samples
                WHERE idsample = :idsample
            ");
            $stmt->execute([':idsample' => $idsample]);

            jsonResponse([
                'success' => true,
                'message' => 'Sample deleted successfully.'
            ]);
        }

        jsonResponse([
            'success' => false,
            'message' => 'Unknown action.'
        ]);
    } catch (Throwable $e) {
        jsonResponse([
            'success' => false,
            'message' => $e->getMessage()
        ]);
    }
}

/*
 * Page data.
 */
$companies = [];
$brands = [];
$departments = [];
$partners = [];
$countries = [];
$samples = [];

try {
    $stmt = $db->query("
        SELECT idcompany, company_name, status
        FROM companies
        ORDER BY company_name ASC
    ");
    $companies = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $companies = [];
}

try {
    $stmt = $db->query("
        SELECT idbrand, idcompany, brand_name, status
        FROM brands
        ORDER BY brand_name ASC
    ");
    $brands = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $brands = [];
}

try {
    $stmt = $db->query("
        SELECT iddepartment, idcompany, idbrand, department_name, status
        FROM departments
        ORDER BY department_name ASC
    ");
    $departments = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $departments = [];
}

try {
    $stmt = $db->query("
        SELECT idpartner, idcompany, partner_type, partner_name, status
        FROM business_partners
        ORDER BY partner_name ASC
    ");
    $partners = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $partners = [];
}

try {
    $stmt = $db->query("
        SELECT id, name, iso_3166_2
        FROM auth_countries
        ORDER BY name ASC
    ");
    $countries = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $countries = [];
}

try {
    $stmt = $db->query("
        SELECT
            s.idsample,
            s.idcompany,
            s.idbrand,
            s.iddepartment,
            s.sample_code,
            s.external_sample_id,
            s.article_no,
            s.po_no,
            s.season,
            s.sample_description,
            s.product_category,
            s.product_type,
            s.color,
            s.production_stage,
            s.status,
            s.source,
            s.created_at,
            c.company_name,
            b.brand_name,
            d.department_name,
            bp1.partner_name AS producer_name,
            bp2.partner_name AS supplier_name,
            COUNT(DISTINCT sp.idpart) AS parts_count,
            COUNT(DISTINCT sph.idsamplephoto) AS photos_count,
            COUNT(DISTINCT sd.idsampledocument) AS documents_count
        FROM samples s
        INNER JOIN companies c ON c.idcompany = s.idcompany
        LEFT JOIN brands b ON b.idbrand = s.idbrand
        LEFT JOIN departments d ON d.iddepartment = s.iddepartment
        LEFT JOIN business_partners bp1 ON bp1.idpartner = s.idproducer
        LEFT JOIN business_partners bp2 ON bp2.idpartner = s.idsupplier
        LEFT JOIN sample_parts sp ON sp.idsample = s.idsample
        LEFT JOIN sample_photos sph ON sph.idsample = s.idsample
        LEFT JOIN sample_documents sd ON sd.idsample = s.idsample
        GROUP BY
            s.idsample,
            s.idcompany,
            s.idbrand,
            s.iddepartment,
            s.sample_code,
            s.external_sample_id,
            s.article_no,
            s.po_no,
            s.season,
            s.sample_description,
            s.product_category,
            s.product_type,
            s.color,
            s.production_stage,
            s.status,
            s.source,
            s.created_at,
            c.company_name,
            b.brand_name,
            d.department_name,
            bp1.partner_name,
            bp2.partner_name
        ORDER BY s.created_at DESC, s.idsample DESC
    ");
    $samples = $stmt->fetchAll(PDO::FETCH_ASSOC);
} catch (Throwable $e) {
    $samples = [];
}

$pageTitle = 'Samples';

$totalSamples = count($samples);
$activeSamples = count(array_filter($samples, fn($row) => in_array($row['status'], ['active', 'submitted', 'under_testing'], true)));
$totalParts = array_sum(array_map(fn($row) => (int) $row['parts_count'], $samples));
$totalFiles = array_sum(array_map(fn($row) => (int) $row['photos_count'] + (int) $row['documents_count'], $samples));
?>

<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="icon" href="assets/images/favicon-32x32.png" type="image/png" />

    <?php include('cssinclude.php'); ?>

    <title><?= e($pageTitle); ?> - <?= isset($titlewebsite) ? e($titlewebsite) : 'TRFgo'; ?></title>

    <style>
        :root {
            --trfgo-primary: #2563eb;
            --trfgo-muted: #64748b;
            --trfgo-border: #e5e7eb;
            --trfgo-soft-blue: #eff6ff;
            --trfgo-soft-green: #ecfdf5;
            --trfgo-soft-orange: #fff7ed;
            --trfgo-soft-purple: #f5f3ff;
        }

        .page-intro-card {
            border: 0;
            border-radius: 20px;
            overflow: hidden;
            background:
                radial-gradient(circle at top right, rgba(59, 130, 246, 0.22), transparent 30%),
                linear-gradient(135deg, #0f172a 0%, #1d4ed8 60%, #38bdf8 100%);
            color: #fff;
            box-shadow: 0 18px 45px rgba(15, 23, 42, 0.18);
        }

        .page-intro-card .card-body {
            padding: 26px;
        }

        .page-intro-card h1,
        .page-intro-card h2,
        .page-intro-card h3,
        .page-intro-card h4,
        .page-intro-card h5,
        .page-intro-card h6 {
            color: #ffffff;
        }

        .intro-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.16);
            color: rgba(255, 255, 255, 0.94);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .intro-title {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .intro-text {
            max-width: 820px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .btn-intro {
            border-radius: 12px;
            padding: 10px 16px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 0;
            background: #fff;
            color: #1d4ed8;
            box-shadow: 0 12px 28px rgba(15, 23, 42, 0.18);
        }

        .summary-card {
            border: 0;
            border-radius: 18px;
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
        }

        .summary-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .summary-icon.blue {
            background: var(--trfgo-soft-blue);
            color: #2563eb;
        }

        .summary-icon.green {
            background: var(--trfgo-soft-green);
            color: #059669;
        }

        .summary-icon.orange {
            background: var(--trfgo-soft-orange);
            color: #ea580c;
        }

        .summary-icon.purple {
            background: var(--trfgo-soft-purple);
            color: #7c3aed;
        }

        .summary-label {
            color: var(--trfgo-muted);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 3px;
        }

        .summary-value {
            color: #0f172a;
            font-size: 26px;
            font-weight: 800;
            line-height: 1.1;
        }

        .content-card {
            border: 0;
            border-radius: 18px;
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
        }

        .section-title {
            color: #0f172a;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 3px;
        }

        .section-subtitle {
            color: var(--trfgo-muted);
            font-size: 13px;
            margin-bottom: 0;
        }

        .sample-table th {
            color: #64748b;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid var(--trfgo-border) !important;
            white-space: nowrap;
        }

        .sample-table td {
            vertical-align: middle;
            border-color: #eef2f7;
        }

        .sample-code {
            font-weight: 800;
            color: #0f172a;
        }

        .sample-sub {
            color: var(--trfgo-muted);
            font-size: 12px;
        }

        .metric-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f8fafc;
            border: 1px solid #e5e7eb;
            color: #475569;
            border-radius: 999px;
            padding: 5px 9px;
            font-size: 12px;
            font-weight: 700;
            white-space: nowrap;
        }

        .badge-soft-success {
            background: #dcfce7;
            color: #166534;
            border-radius: 999px;
            font-weight: 700;
            padding: 6px 10px;
            white-space: nowrap;
        }

        .badge-soft-warning {
            background: #ffedd5;
            color: #9a3412;
            border-radius: 999px;
            font-weight: 700;
            padding: 6px 10px;
            white-space: nowrap;
        }

        .badge-soft-muted {
            background: #f1f5f9;
            color: #475569;
            border-radius: 999px;
            font-weight: 700;
            padding: 6px 10px;
            white-space: nowrap;
        }

        .badge-soft-primary {
            background: #dbeafe;
            color: #1d4ed8;
            border-radius: 999px;
            font-weight: 700;
            padding: 6px 10px;
            white-space: nowrap;
        }

        .badge-soft-purple {
            background: #ede9fe;
            color: #6d28d9;
            border-radius: 999px;
            font-weight: 700;
            padding: 6px 10px;
            white-space: nowrap;
        }

        .btn-action {
            width: 34px;
            height: 34px;
            border-radius: 11px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #e5e7eb;
            background: #fff;
            color: #475569;
            transition: all 0.16s ease;
            text-decoration: none;
        }

        .btn-action:hover {
            color: #1d4ed8;
            border-color: rgba(37, 99, 235, 0.35);
            background: #eff6ff;
        }

        .btn-action.danger:hover {
            color: #dc2626;
            border-color: rgba(220, 38, 38, 0.30);
            background: #fef2f2;
        }

        .modal-content {
            border: 0;
            border-radius: 20px;
            box-shadow: 0 24px 80px rgba(15, 23, 42, 0.22);
        }

        .modal-header {
            border-bottom: 1px solid #eef2f7;
        }

        .modal-title {
            font-weight: 800;
            color: #0f172a;
        }

        .form-label {
            font-size: 13px;
            font-weight: 700;
            color: #334155;
        }

        .form-control,
        .form-select {
            border-radius: 12px;
            border-color: #dbe3ef;
        }

        .form-control:focus,
        .form-select:focus {
            border-color: rgba(37, 99, 235, 0.45);
            box-shadow: 0 0 0 0.20rem rgba(37, 99, 235, 0.12);
        }

        .required-dot {
            color: #dc2626;
        }

        @media (max-width: 767px) {
            .intro-title {
                font-size: 24px;
            }

            .btn-intro {
                width: 100%;
                justify-content: center;
                margin-top: 15px;
            }
        }
    </style>
</head>

<body>
    <div class="wrapper">
        <?php include('include/navbar.php'); ?>
        <?php include('include/topbar.php'); ?>

        <div class="page-wrapper">
            <div class="page-content">

                <div class="card page-intro-card mb-4">
                    <div class="card-body">
                        <div class="d-flex align-items-center justify-content-between flex-wrap gap-3">
                            <div>
                                <div class="intro-eyebrow">
                                    <i class="bx bx-package"></i>
                                    TRFgo Product Identity
                                </div>
                                <h1 class="intro-title">Samples</h1>
                                <p class="intro-text">
                                    Create and manage product/sample identity cards with company, brand, department,
                                    producer, supplier, article data, material information and testing lifecycle status.
                                </p>
                            </div>

                            <div>
                                <button type="button" class="btn btn-intro" id="btnAddSample">
                                    <i class="bx bx-plus-circle"></i>
                                    Add Sample
                                </button>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="row row-cols-1 row-cols-md-4 mb-3">
                    <div class="col">
                        <div class="card summary-card">
                            <div class="card-body">
                                <div class="d-flex align-items-center justify-content-between">
                                    <div>
                                        <div class="summary-label">Total Samples</div>
                                        <div class="summary-value"><?= e($totalSamples); ?></div>
                                    </div>
                                    <div class="summary-icon blue">
                                        <i class="bx bx-package"></i>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="col">
                        <div class="card summary-card">
                            <div class="card-body">
                                <div class="d-flex align-items-center justify-content-between">
                                    <div>
                                        <div class="summary-label">Active / Testing</div>
                                        <div class="summary-value"><?= e($activeSamples); ?></div>
                                    </div>
                                    <div class="summary-icon green">
                                        <i class="bx bx-check-circle"></i>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="col">
                        <div class="card summary-card">
                            <div class="card-body">
                                <div class="d-flex align-items-center justify-content-between">
                                    <div>
                                        <div class="summary-label">BOM Parts</div>
                                        <div class="summary-value"><?= e($totalParts); ?></div>
                                    </div>
                                    <div class="summary-icon orange">
                                        <i class="bx bx-git-branch"></i>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="col">
                        <div class="card summary-card">
                            <div class="card-body">
                                <div class="d-flex align-items-center justify-content-between">
                                    <div>
                                        <div class="summary-label">Files</div>
                                        <div class="summary-value"><?= e($totalFiles); ?></div>
                                    </div>
                                    <div class="summary-icon purple">
                                        <i class="bx bx-folder"></i>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="card content-card">
                    <div class="card-header bg-transparent">
                        <div class="d-flex align-items-center justify-content-between flex-wrap gap-2">
                            <div>
                                <h6 class="section-title mb-0">Sample List</h6>
                                <p class="section-subtitle">Product identity cards ready for BOM, documents and TRF requests</p>
                            </div>

                            <button type="button" class="btn btn-primary btn-sm" id="btnAddSampleSmall">
                                <i class="bx bx-plus-circle"></i>
                                Add Sample
                            </button>
                        </div>
                    </div>

                    <div class="card-body">
                        <?php if (count($companies) === 0): ?>
                            <div class="alert alert-warning mb-3">
                                <strong>No companies available.</strong>
                                Create at least one company before adding samples.
                            </div>
                        <?php endif; ?>

                        <?php if (count($partners) === 0): ?>
                            <div class="alert alert-light border mb-3">
                                <strong>No business partners yet.</strong>
                                You can create samples without partners, but producer and supplier dropdowns will be empty.
                            </div>
                        <?php endif; ?>

                        <div class="table-responsive">
                            <table id="samplesTable" class="table table-striped table-hover align-middle sample-table" style="width:100%">
                                <thead>
                                    <tr>
                                        <th>Sample</th>
                                        <th>Company</th>
                                        <th>Brand / Department</th>
                                        <th>Producer / Supplier</th>
                                        <th>Article / PO</th>
                                        <th class="text-center">BOM</th>
                                        <th class="text-center">Files</th>
                                        <th>Status</th>
                                        <th class="text-end">Actions</th>
                                    </tr>
                                </thead>

                                <tbody>
                                    <?php foreach ($samples as $sample): ?>
                                        <?php
                                        $filesCount = (int) $sample['photos_count'] + (int) $sample['documents_count'];
                                        $statusLabel = $sampleStatuses[$sample['status']] ?? ucfirst($sample['status']);
                                        ?>
                                        <tr>
                                            <td>
                                                <div class="sample-code"><?= e($sample['sample_code']); ?></div>
                                                <div class="sample-sub"><?= e($sample['sample_description']); ?></div>
                                                <?php if (!empty($sample['external_sample_id'])): ?>
                                                    <div class="sample-sub">External ID: <?= e($sample['external_sample_id']); ?></div>
                                                <?php endif; ?>
                                                <?php if (!empty($sample['color'])): ?>
                                                    <div class="sample-sub">Color: <?= e($sample['color']); ?></div>
                                                <?php endif; ?>
                                            </td>

                                            <td>
                                                <div class="sample-code"><?= e($sample['company_name']); ?></div>
                                                <div class="sample-sub"><?= e($sampleSources[$sample['source']] ?? $sample['source']); ?></div>
                                            </td>

                                            <td>
                                                <div><?= !empty($sample['brand_name']) ? e($sample['brand_name']) : '<span class="text-muted">-</span>'; ?></div>
                                                <div class="sample-sub"><?= !empty($sample['department_name']) ? e($sample['department_name']) : '-'; ?></div>
                                            </td>

                                            <td>
                                                <div><?= !empty($sample['producer_name']) ? e($sample['producer_name']) : '<span class="text-muted">-</span>'; ?></div>
                                                <div class="sample-sub"><?= !empty($sample['supplier_name']) ? e($sample['supplier_name']) : '-'; ?></div>
                                            </td>

                                            <td>
                                                <div><?= !empty($sample['article_no']) ? e($sample['article_no']) : '<span class="text-muted">-</span>'; ?></div>
                                                <div class="sample-sub"><?= !empty($sample['po_no']) ? e($sample['po_no']) : '-'; ?></div>
                                                <?php if (!empty($sample['season'])): ?>
                                                    <div class="sample-sub">Season: <?= e($sample['season']); ?></div>
                                                <?php endif; ?>
                                            </td>

                                            <td class="text-center">
                                                <span class="metric-pill">
                                                    <i class="bx bx-git-branch"></i>
                                                    <?= e($sample['parts_count']); ?>
                                                </span>
                                            </td>

                                            <td class="text-center">
                                                <span class="metric-pill">
                                                    <i class="bx bx-folder"></i>
                                                    <?= e($filesCount); ?>
                                                </span>
                                            </td>

                                            <td>
                                                <?php if (in_array($sample['status'], ['active', 'submitted', 'under_testing'], true)): ?>
                                                    <span class="badge-soft-success"><?= e($statusLabel); ?></span>
                                                <?php elseif ($sample['status'] === 'draft'): ?>
                                                    <span class="badge-soft-warning"><?= e($statusLabel); ?></span>
                                                <?php elseif ($sample['status'] === 'completed'): ?>
                                                    <span class="badge-soft-primary"><?= e($statusLabel); ?></span>
                                                <?php else: ?>
                                                    <span class="badge-soft-muted"><?= e($statusLabel); ?></span>
                                                <?php endif; ?>
                                            </td>

                                            <td class="text-end">
                                                <a href="sample-detail.php?idsample=<?= e($sample['idsample']); ?>"
                                                    class="btn-action"
                                                    title="Open detail">
                                                    <i class="bx bx-show"></i>
                                                </a>

                                                <button type="button"
                                                    class="btn-action btnEditSample"
                                                    data-id="<?= e($sample['idsample']); ?>"
                                                    title="Edit">
                                                    <i class="bx bx-edit-alt"></i>
                                                </button>

                                                <?php if ($sample['status'] !== 'archived'): ?>
                                                    <button type="button"
                                                        class="btn-action btnChangeSampleStatus"
                                                        data-id="<?= e($sample['idsample']); ?>"
                                                        data-status="archived"
                                                        title="Archive">
                                                        <i class="bx bx-archive"></i>
                                                    </button>
                                                <?php else: ?>
                                                    <button type="button"
                                                        class="btn-action btnChangeSampleStatus"
                                                        data-id="<?= e($sample['idsample']); ?>"
                                                        data-status="active"
                                                        title="Set active">
                                                        <i class="bx bx-check-circle"></i>
                                                    </button>
                                                <?php endif; ?>

                                                <button type="button"
                                                    class="btn-action danger btnDeleteSample"
                                                    data-id="<?= e($sample['idsample']); ?>"
                                                    title="Delete">
                                                    <i class="bx bx-trash"></i>
                                                </button>
                                            </td>
                                        </tr>
                                    <?php endforeach; ?>
                                </tbody>
                            </table>
                        </div>

                    </div>
                </div>

            </div>
        </div>

        <div class="overlay toggle-icon"></div>

        <a href="javaScript:;" class="back-to-top">
            <i class='bx bxs-up-arrow-alt'></i>
        </a>

        <?php include('include/footer.php'); ?>
    </div>

    <!-- Sample Modal -->
    <div class="modal fade" id="sampleModal" tabindex="-1" aria-labelledby="sampleModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-xl modal-dialog-centered">
            <form id="sampleForm" class="modal-content">
                <input type="hidden" name="action" value="save_sample">
                <input type="hidden" name="idsample" id="idsample" value="0">

                <div class="modal-header">
                    <div>
                        <h5 class="modal-title" id="sampleModalLabel">Add Sample</h5>
                        <small class="text-muted">Create or update the product/sample identity card.</small>
                    </div>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>

                <div class="modal-body">
                    <div class="row g-3">

                        <div class="col-12 col-md-4">
                            <label class="form-label">Company <span class="required-dot">*</span></label>
                            <select class="form-select" name="idcompany" id="idcompany" required>
                                <option value="">Select company</option>
                                <?php foreach ($companies as $company): ?>
                                    <option value="<?= e($company['idcompany']); ?>">
                                        <?= e($company['company_name']); ?>
                                        <?= $company['status'] !== 'active' ? ' - ' . e($company['status']) : ''; ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Brand</label>
                            <select class="form-select" name="idbrand" id="idbrand">
                                <option value="">No brand</option>
                                <?php foreach ($brands as $brand): ?>
                                    <option value="<?= e($brand['idbrand']); ?>" data-company="<?= e($brand['idcompany']); ?>">
                                        <?= e($brand['brand_name']); ?>
                                        <?= $brand['status'] !== 'active' ? ' - ' . e($brand['status']) : ''; ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Department</label>
                            <select class="form-select" name="iddepartment" id="iddepartment">
                                <option value="">No department</option>
                                <?php foreach ($departments as $department): ?>
                                    <option value="<?= e($department['iddepartment']); ?>"
                                        data-company="<?= e($department['idcompany']); ?>"
                                        data-brand="<?= e($department['idbrand']); ?>">
                                        <?= e($department['department_name']); ?>
                                        <?= $department['status'] !== 'active' ? ' - ' . e($department['status']) : ''; ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Producer</label>
                            <select class="form-select" name="idproducer" id="idproducer">
                                <option value="">No producer</option>
                                <?php foreach ($partners as $partner): ?>
                                    <option value="<?= e($partner['idpartner']); ?>"
                                        data-company="<?= e($partner['idcompany']); ?>"
                                        data-type="<?= e($partner['partner_type']); ?>">
                                        <?= e($partner['partner_name']); ?> - <?= e($partner['partner_type']); ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Supplier</label>
                            <select class="form-select" name="idsupplier" id="idsupplier">
                                <option value="">No supplier</option>
                                <?php foreach ($partners as $partner): ?>
                                    <option value="<?= e($partner['idpartner']); ?>"
                                        data-company="<?= e($partner['idcompany']); ?>"
                                        data-type="<?= e($partner['partner_type']); ?>">
                                        <?= e($partner['partner_name']); ?> - <?= e($partner['partner_type']); ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Status</label>
                            <select class="form-select" name="status" id="status">
                                <?php foreach ($sampleStatuses as $value => $label): ?>
                                    <option value="<?= e($value); ?>"><?= e($label); ?></option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Sample Code</label>
                            <input type="text" class="form-control" name="sample_code" id="sample_code" placeholder="Auto if empty">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">External Sample ID</label>
                            <input type="text" class="form-control" name="external_sample_id" id="external_sample_id">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Article No.</label>
                            <input type="text" class="form-control" name="article_no" id="article_no">
                        </div>

                        <div class="col-12 col-md-6">
                            <label class="form-label">PO No.</label>
                            <input type="text" class="form-control" name="po_no" id="po_no">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Season</label>
                            <input type="text" class="form-control" name="season" id="season">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Production Stage</label>
                            <input type="text" class="form-control" name="production_stage" id="production_stage">
                        </div>

                        <div class="col-12">
                            <label class="form-label">Sample Description <span class="required-dot">*</span></label>
                            <input type="text" class="form-control" name="sample_description" id="sample_description" required>
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Style No.</label>
                            <input type="text" class="form-control" name="style_no" id="style_no">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Style Name</label>
                            <input type="text" class="form-control" name="style_name" id="style_name">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Model</label>
                            <input type="text" class="form-control" name="model" id="model">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Product Category</label>
                            <input type="text" class="form-control" name="product_category" id="product_category">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Product Type</label>
                            <input type="text" class="form-control" name="product_type" id="product_type">
                        </div>

                        <div class="col-12 col-md-4">
                            <label class="form-label">Color</label>
                            <input type="text" class="form-control" name="color" id="color">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Size</label>
                            <input type="text" class="form-control" name="size" id="size">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Gender</label>
                            <input type="text" class="form-control" name="gender" id="gender">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Age Group</label>
                            <input type="text" class="form-control" name="age_group" id="age_group">
                        </div>

                        <div class="col-12 col-md-3">
                            <label class="form-label">Claimed Weight</label>
                            <input type="text" class="form-control" name="claimed_weight" id="claimed_weight">
                        </div>

                        <div class="col-12">
                            <label class="form-label">Fiber Content</label>
                            <textarea class="form-control" name="fiber_content" id="fiber_content" rows="2"></textarea>
                        </div>

                        <div class="col-12">
                            <label class="form-label">Material Description</label>
                            <textarea class="form-control" name="material_description" id="material_description" rows="2"></textarea>
                        </div>

                        <div class="col-12 col-md-6">
                            <label class="form-label">Product Standard</label>
                            <input type="text" class="form-control" name="product_standard" id="product_standard">
                        </div>

                        <div class="col-12 col-md-6">
                            <label class="form-label">Country of Origin</label>
                            <select class="form-select" name="country_of_origin" id="country_of_origin">
                                <option value="">Select country</option>
                                <?php foreach ($countries as $country): ?>
                                    <option value="<?= e($country['id']); ?>">
                                        <?= e($country['name']); ?>
                                        <?= !empty($country['iso_3166_2']) ? ' (' . e($country['iso_3166_2']) . ')' : ''; ?>
                                    </option>
                                <?php endforeach; ?>
                            </select>
                        </div>

                    </div>
                </div>

                <div class="modal-footer">
                    <button type="button" class="btn btn-light" data-bs-dismiss="modal">Cancel</button>
                    <button type="submit" class="btn btn-primary" id="btnSaveSample">
                        <i class="bx bx-save"></i>
                        Save Sample
                    </button>
                </div>
            </form>
        </div>
    </div>

    <?php include('jsinclude.php'); ?>

    <script>
        $(document).ready(function() {
            if ($.fn.DataTable) {
                $('#samplesTable').DataTable({
                    pageLength: 25,
                    order: [
                        [0, 'desc']
                    ],
                    responsive: true,
                    language: {
                        search: "",
                        searchPlaceholder: "Search samples..."
                    }
                });
            }

            const sampleModal = new bootstrap.Modal(document.getElementById('sampleModal'));

            function showAlert(type, message) {
                if (typeof Swal !== 'undefined') {
                    Swal.fire({
                        icon: type,
                        title: type === 'success' ? 'Done' : 'Attention',
                        text: message,
                        confirmButtonColor: '#2563eb'
                    });
                    return;
                }

                alert(message);
            }

            function reloadAfterSuccess(message) {
                if (typeof Swal !== 'undefined') {
                    Swal.fire({
                        icon: 'success',
                        title: 'Done',
                        text: message,
                        confirmButtonColor: '#2563eb'
                    }).then(function() {
                        window.location.reload();
                    });
                    return;
                }

                alert(message);
                window.location.reload();
            }

            function resetSampleForm() {
                $('#sampleForm')[0].reset();
                $('#idsample').val('0');
                $('#sampleModalLabel').text('Add Sample');
                $('#status').val('draft');
                filterBrandOptions('');
                filterDepartmentOptions('', '');
                filterPartnerOptions('');
            }

            function filterBrandOptions(idcompany, selectedBrandId = '') {
                $('#idbrand option').each(function() {
                    const optionCompany = $(this).data('company');

                    if ($(this).val() === '') {
                        $(this).show();
                        return;
                    }

                    if (!idcompany || String(optionCompany) === String(idcompany)) {
                        $(this).show();
                    } else {
                        $(this).hide();
                    }
                });

                $('#idbrand').val(selectedBrandId || '');
            }

            function filterDepartmentOptions(idcompany, idbrand, selectedDepartmentId = '') {
                $('#iddepartment option').each(function() {
                    const optionCompany = $(this).data('company');
                    const optionBrand = $(this).data('brand');

                    if ($(this).val() === '') {
                        $(this).show();
                        return;
                    }

                    if (!idcompany) {
                        $(this).hide();
                        return;
                    }

                    if (String(optionCompany) !== String(idcompany)) {
                        $(this).hide();
                        return;
                    }

                    if (!idbrand || String(optionBrand) === String(idbrand) || optionBrand === '' || typeof optionBrand === 'undefined') {
                        $(this).show();
                    } else {
                        $(this).hide();
                    }
                });

                $('#iddepartment').val(selectedDepartmentId || '');
            }

            function filterPartnerOptions(idcompany, selectedProducerId = '', selectedSupplierId = '') {
                $('#idproducer option, #idsupplier option').each(function() {
                    const optionCompany = $(this).data('company');

                    if ($(this).val() === '') {
                        $(this).show();
                        return;
                    }

                    if (!idcompany || String(optionCompany) === String(idcompany)) {
                        $(this).show();
                    } else {
                        $(this).hide();
                    }
                });

                $('#idproducer').val(selectedProducerId || '');
                $('#idsupplier').val(selectedSupplierId || '');
            }

            $('#idcompany').on('change', function() {
                const idcompany = $(this).val();

                filterBrandOptions(idcompany);
                filterDepartmentOptions(idcompany, '');
                filterPartnerOptions(idcompany);
            });

            $('#idbrand').on('change', function() {
                const idcompany = $('#idcompany').val();
                const idbrand = $(this).val();

                filterDepartmentOptions(idcompany, idbrand);
            });

            $('#btnAddSample, #btnAddSampleSmall').on('click', function() {
                resetSampleForm();
                sampleModal.show();
            });

            $('.btnEditSample').on('click', function() {
                const idsample = $(this).data('id');

                $.ajax({
                    url: 'samples.php',
                    type: 'POST',
                    dataType: 'json',
                    data: {
                        action: 'get_sample',
                        idsample: idsample
                    },
                    success: function(response) {
                        if (!response.success) {
                            showAlert('error', response.message || 'Unable to load sample.');
                            return;
                        }

                        const sample = response.sample;

                        $('#sampleModalLabel').text('Edit Sample');
                        $('#idsample').val(sample.idsample);
                        $('#idcompany').val(sample.idcompany);

                        filterBrandOptions(sample.idcompany, sample.idbrand);
                        filterDepartmentOptions(sample.idcompany, sample.idbrand, sample.iddepartment);
                        filterPartnerOptions(sample.idcompany, sample.idproducer, sample.idsupplier);

                        $('#sample_code').val(sample.sample_code);
                        $('#external_sample_id').val(sample.external_sample_id);
                        $('#article_no').val(sample.article_no);
                        $('#po_no').val(sample.po_no);
                        $('#season').val(sample.season);
                        $('#style_no').val(sample.style_no);
                        $('#style_name').val(sample.style_name);
                        $('#model').val(sample.model);
                        $('#sample_description').val(sample.sample_description);
                        $('#product_category').val(sample.product_category);
                        $('#product_type').val(sample.product_type);
                        $('#color').val(sample.color);
                        $('#size').val(sample.size);
                        $('#gender').val(sample.gender);
                        $('#age_group').val(sample.age_group);
                        $('#fiber_content').val(sample.fiber_content);
                        $('#material_description').val(sample.material_description);
                        $('#claimed_weight').val(sample.claimed_weight);
                        $('#product_standard').val(sample.product_standard);
                        $('#production_stage').val(sample.production_stage);
                        $('#country_of_origin').val(sample.country_of_origin);
                        $('#status').val(sample.status);

                        sampleModal.show();
                    },
                    error: function() {
                        showAlert('error', 'Server error while loading sample.');
                    }
                });
            });

            $('#sampleForm').on('submit', function(e) {
                e.preventDefault();

                $('#btnSaveSample').prop('disabled', true).html('<i class="bx bx-loader-alt bx-spin"></i> Saving...');

                $.ajax({
                    url: 'samples.php',
                    type: 'POST',
                    dataType: 'json',
                    data: $(this).serialize(),
                    success: function(response) {
                        $('#btnSaveSample').prop('disabled', false).html('<i class="bx bx-save"></i> Save Sample');

                        if (!response.success) {
                            showAlert('error', response.message || 'Unable to save sample.');
                            return;
                        }

                        sampleModal.hide();
                        reloadAfterSuccess(response.message || 'Sample saved successfully.');
                    },
                    error: function() {
                        $('#btnSaveSample').prop('disabled', false).html('<i class="bx bx-save"></i> Save Sample');
                        showAlert('error', 'Server error while saving sample.');
                    }
                });
            });

            $('.btnChangeSampleStatus').on('click', function() {
                const idsample = $(this).data('id');
                const status = $(this).data('status');

                const message = status === 'archived' ?
                    'Do you want to archive this sample?' :
                    'Do you want to set this sample as active?';

                const doChange = function() {
                    $.ajax({
                        url: 'samples.php',
                        type: 'POST',
                        dataType: 'json',
                        data: {
                            action: 'change_sample_status',
                            idsample: idsample,
                            status: status
                        },
                        success: function(response) {
                            if (!response.success) {
                                showAlert('error', response.message || 'Unable to update status.');
                                return;
                            }

                            reloadAfterSuccess(response.message || 'Status updated successfully.');
                        },
                        error: function() {
                            showAlert('error', 'Server error while updating status.');
                        }
                    });
                };

                if (typeof Swal !== 'undefined') {
                    Swal.fire({
                        icon: 'question',
                        title: 'Confirm status change',
                        text: message,
                        showCancelButton: true,
                        confirmButtonColor: '#2563eb',
                        cancelButtonColor: '#64748b',
                        confirmButtonText: 'Yes, continue'
                    }).then(function(result) {
                        if (result.isConfirmed) {
                            doChange();
                        }
                    });
                    return;
                }

                if (confirm(message)) {
                    doChange();
                }
            });

            $('.btnDeleteSample').on('click', function() {
                const idsample = $(this).data('id');

                const doDelete = function() {
                    $.ajax({
                        url: 'samples.php',
                        type: 'POST',
                        dataType: 'json',
                        data: {
                            action: 'delete_sample',
                            idsample: idsample
                        },
                        success: function(response) {
                            if (!response.success) {
                                showAlert('error', response.message || 'Unable to delete sample.');
                                return;
                            }

                            reloadAfterSuccess(response.message || 'Sample deleted successfully.');
                        },
                        error: function() {
                            showAlert('error', 'Server error while deleting sample.');
                        }
                    });
                };

                if (typeof Swal !== 'undefined') {
                    Swal.fire({
                        icon: 'warning',
                        title: 'Delete sample?',
                        text: 'The sample will be deleted only if it has no BOM parts, photos or documents.',
                        showCancelButton: true,
                        confirmButtonColor: '#dc2626',
                        cancelButtonColor: '#64748b',
                        confirmButtonText: 'Yes, delete'
                    }).then(function(result) {
                        if (result.isConfirmed) {
                            doDelete();
                        }
                    });
                    return;
                }

                if (confirm('Delete sample?')) {
                    doDelete();
                }
            });
        });
    </script>

</body>

</html>