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

$pdo = DBHandlerSelect::getInstance()->getConnection();

/* ==========================================
   PERMISSIONS
   ========================================== */
$isHrManager = Auth::user()->hasRole('Admin')
    || Auth::user()->hasRole('Superuser')
    || Auth::user()->hasRole('employee-hr')
    || Auth::user()->hasRole('manager');

if (!$isHrManager) {
    header('Location: employee-profile.php');
    exit;
}

/* ==========================================
   FILTERS (from GET)
   ========================================== */
$fEmployeeId    = isset($_GET['employee_id'])  && $_GET['employee_id']  !== '' ? (int)$_GET['employee_id']  : 0;
$fTopicId       = isset($_GET['topic_id'])     && $_GET['topic_id']     !== '' ? (int)$_GET['topic_id']     : 0;
$fStatus        = isset($_GET['status'])       ? trim($_GET['status'])       : '';
$fType          = isset($_GET['type'])         ? trim($_GET['type'])         : '';
$fDepartmentId  = isset($_GET['department_id']) && $_GET['department_id'] !== '' ? (int)$_GET['department_id'] : 0;

/* ==========================================
   LOAD DATA
   ========================================== */
$where = [];
$params = [];
// Only the most recent record per (employee, topic) — older initial/refresher
// rows stay as history on the employee profile, not in this overview.
$where[] = "NOT EXISTS (
    SELECT 1 FROM employee_trainings et2
    WHERE et2.employee_id = et.employee_id
      AND et2.training_topic_id = et.training_topic_id
      AND (et2.completed_date > et.completed_date
           OR (et2.completed_date = et.completed_date AND et2.id > et.id))
)";
if ($fEmployeeId > 0) {
    $where[] = 'et.employee_id = :eid';
    $params['eid']  = $fEmployeeId;
}
if ($fTopicId > 0) {
    $where[] = 'et.training_topic_id = :tid';
    $params['tid']  = $fTopicId;
}
if ($fType !== '' && in_array($fType, ['initial', 'refresher'], true)) {
    $where[] = 'et.training_type = :ty';
    $params['ty'] = $fType;
}
if ($fDepartmentId > 0) {
    $where[] = 'e.department_id = :did';
    $params['did']  = $fDepartmentId;
}
$whereSql = $where ? ('WHERE ' . implode(' AND ', $where)) : '';

$stmt = $pdo->prepare("
    SELECT et.*,
           tt.name AS topic_name,
           tt.default_reminder_days AS topic_default_rem,
           e.first_name, e.last_name, e.employee_code,
           d.name AS department_name, d.color AS department_color,
           (SELECT COUNT(*) FROM employee_training_attachments a WHERE a.training_id = et.id) AS attachments_count
    FROM employee_trainings et
    JOIN training_topics tt ON tt.id = et.training_topic_id
    JOIN employees e       ON e.id = et.employee_id
    LEFT JOIN departments d ON d.id = e.department_id
    $whereSql
    ORDER BY et.next_due_date IS NULL, et.next_due_date ASC, e.last_name, e.first_name
");
$stmt->execute($params);
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

require_once __DIR__ . '/include/training_coverage.php';

/* Mappa di tutti i corsi (serve all'helper coperture) */
$allTopicsById = [];
foreach ($pdo->query("SELECT id, name, default_frequency_months, default_reminder_days, is_active FROM training_topics")->fetchAll(PDO::FETCH_ASSOC) as $t) {
    if ((int)$t['is_active'] !== 1) continue;
    $allTopicsById[(int)$t['id']] = $t;
}

/* Filter by computed status */
function trainingStatus(?string $nextDue, ?int $reminderDays, ?int $topicDefaultRem): array
{
    if (!$nextDue) {
        return ['code' => 'compliant', 'label' => 'Conforme', 'class' => 'success'];
    }
    $rem = $reminderDays !== null ? $reminderDays : ($topicDefaultRem !== null ? $topicDefaultRem : 30);
    $today = new DateTime('today');
    $due   = DateTime::createFromFormat('Y-m-d', $nextDue);
    if (!$due) return ['code' => 'compliant', 'label' => 'Conforme', 'class' => 'success'];
    $daysLeft = (int)$today->diff($due)->format('%r%a');
    if ($daysLeft < 0)              return ['code' => 'expired',     'label' => 'Scaduto',          'class' => 'danger',  'days' => $daysLeft];
    if ($daysLeft <= $rem)          return ['code' => 'due_soon',    'label' => 'Da aggiornare',    'class' => 'warning', 'days' => $daysLeft];
    return                                  ['code' => 'compliant',  'label' => 'Conforme',         'class' => 'success', 'days' => $daysLeft];
}

/* ==========================================
   COPERTURE — righe virtuali derivate.
   Vanno calcolate sui record NON filtrati per topic,
   altrimenti filtrando su "Antincendio" perderemmo l'RSPP che lo copre.
   ========================================== */
$coverageBase = $rows;
if ($fTopicId > 0) {
    $baseWhere  = ["NOT EXISTS (
        SELECT 1 FROM employee_trainings et2
        WHERE et2.employee_id = et.employee_id
          AND et2.training_topic_id = et.training_topic_id
          AND (et2.completed_date > et.completed_date
               OR (et2.completed_date = et.completed_date AND et2.id > et.id))
    )"];
    $baseParams = [];
    if ($fEmployeeId > 0) {
        $baseWhere[] = 'et.employee_id = :eid';
        $baseParams['eid'] = $fEmployeeId;
    }
    if ($fType !== '' && in_array($fType, ['initial', 'refresher'], true)) {
        $baseWhere[] = 'et.training_type = :ty';
        $baseParams['ty'] = $fType;
    }
    if ($fDepartmentId > 0) {
        $baseWhere[] = 'e.department_id = :did';
        $baseParams['did'] = $fDepartmentId;
    }
    $baseSql = 'WHERE ' . implode(' AND ', $baseWhere);

    $bstmt = $pdo->prepare("
        SELECT et.*, tt.name AS topic_name, tt.default_reminder_days AS topic_default_rem,
               e.first_name, e.last_name, e.employee_code,
               d.name AS department_name, d.color AS department_color
        FROM employee_trainings et
        JOIN training_topics tt ON tt.id = et.training_topic_id
        JOIN employees e       ON e.id = et.employee_id
        LEFT JOIN departments d ON d.id = e.department_id
        $baseSql
    ");
    $bstmt->execute($baseParams);
    $coverageBase = $bstmt->fetchAll(PDO::FETCH_ASSOC);
}

$virtualRows = tc_buildVirtualRows($pdo, $coverageBase, $allTopicsById);

/* Applica i filtri attivi alle righe virtuali */
if ($fTopicId > 0) {
    $virtualRows = array_values(array_filter($virtualRows, function ($v) use ($fTopicId) {
        return (int)$v['training_topic_id'] === $fTopicId;
    }));
}

$coveredKeys = tc_coveredKeys($virtualRows);

$filtered = [];
$counters = ['compliant' => 0, 'due_soon' => 0, 'expired' => 0, 'not_present' => 0, 'all' => 0];
foreach ($rows as $r) {
    $s = trainingStatus(
        $r['next_due_date'] ?: null,
        $r['reminder_days'] !== null ? (int)$r['reminder_days'] : null,
        $r['topic_default_rem'] !== null ? (int)$r['topic_default_rem'] : null
    );
    $r['_status'] = $s;
    $counters['all']++;
    $counters[$s['code']] = ($counters[$s['code']] ?? 0) + 1;

    if ($fStatus !== '' && $fStatus !== $s['code']) continue;
    $filtered[] = $r;
}

/* Righe coperte: stesso calcolo di stato delle righe reali */
foreach ($virtualRows as $v) {
    $s = trainingStatus(
        $v['next_due_date'] ?: null,
        null,
        $v['topic_default_rem'] !== null ? (int)$v['topic_default_rem'] : null
    );
    $v['_status'] = $s;
    $counters['all']++;
    $counters[$s['code']] = ($counters[$s['code']] ?? 0) + 1;

    if ($fStatus !== '' && $fStatus !== $s['code']) continue;
    $filtered[] = $v;
}

/* ==========================================
   "NOT PRESENT" — mandatory topics without any record for an employee.
   Apply the same filters (employee_id / topic_id / department_id / type=initial).
   ========================================== */
if ($fType === '' || $fType === 'initial') {
    $missingWhere  = [];
    $missingParams = [];
    if ($fEmployeeId > 0) {
        $missingWhere[] = 'e.id = :eid';
        $missingParams['eid'] = $fEmployeeId;
    }
    if ($fTopicId > 0) {
        $missingWhere[] = 'tt.id = :tid';
        $missingParams['tid'] = $fTopicId;
    }
    if ($fDepartmentId > 0) {
        $missingWhere[] = 'e.department_id = :did';
        $missingParams['did'] = $fDepartmentId;
    }
    $missingWhereSql = $missingWhere ? ('AND ' . implode(' AND ', $missingWhere)) : '';

    $missingStmt = $pdo->prepare("
        SELECT e.id AS employee_id, e.first_name, e.last_name, e.employee_code,
               d.name AS department_name, d.color AS department_color,
               tt.id AS topic_id, tt.name AS topic_name
        FROM employees e
        CROSS JOIN training_topics tt
        LEFT JOIN departments d ON d.id = e.department_id
        WHERE tt.is_active = 1 AND tt.is_mandatory = 1
          AND NOT EXISTS (
              SELECT 1 FROM employee_trainings et
              WHERE et.employee_id = e.id AND et.training_topic_id = tt.id
          )
          $missingWhereSql
        ORDER BY e.last_name, e.first_name, tt.name
    ");
    $missingStmt->execute($missingParams);
    $missingRows = $missingStmt->fetchAll(PDO::FETCH_ASSOC);

    foreach ($missingRows as $m) {
        // Se il corso obbligatorio è assorbito da un altro già svolto, non è "Non presente"
        if (isset($coveredKeys[$m['employee_id'] . ':' . $m['topic_id']])) continue;

        $counters['all']++;
        $counters['not_present']++;
        if ($fStatus !== '' && $fStatus !== 'not_present') continue;

        $filtered[] = [
            'id'                 => null,
            '_virtual'           => true,
            'employee_id'        => $m['employee_id'],
            'first_name'         => $m['first_name'],
            'last_name'          => $m['last_name'],
            'employee_code'      => $m['employee_code'],
            'department_name'    => $m['department_name'],
            'department_color'   => $m['department_color'],
            'training_topic_id'  => $m['topic_id'],
            'topic_name'         => $m['topic_name'],
            'training_type'      => null,
            'completed_date'     => null,
            'next_due_date'      => null,
            'attachments_count'  => 0,
            '_status' => ['code' => 'not_present', 'label' => 'Non presente', 'class' => 'secondary', 'days' => null],
        ];
    }
}

/* Dropdown data */
$employees = $pdo->query("
    SELECT id, first_name, last_name, employee_code, department_id
    FROM employees
    ORDER BY last_name, first_name
")->fetchAll(PDO::FETCH_ASSOC);
$topics = $pdo->query("
    SELECT id, name, default_frequency_months, default_reminder_days
    FROM training_topics WHERE is_active = 1 ORDER BY sort_order, name
")->fetchAll(PDO::FETCH_ASSOC);
$departments = $pdo->query("
    SELECT id, name, color FROM departments WHERE is_active = 1 ORDER BY sort_order, name
")->fetchAll(PDO::FETCH_ASSOC);

function fmtDate(?string $d): string
{
    if (!$d || $d === '0000-00-00') return '—';
    $ts = strtotime($d);
    return $ts ? date('d/m/Y', $ts) : '—';
}
?>
<!doctype html>
<html lang="it">

<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>Storico Formazione - <?= htmlspecialchars($titlewebsite, ENT_QUOTES, 'UTF-8'); ?></title>

    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>
    <link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet">
    <link href="https://cdn.jsdelivr.net/npm/select2-bootstrap-5-theme@1.3.0/dist/select2-bootstrap-5-theme.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>

    <style>
        body {
            font-size: 1.05rem;
            background: #f8fafc;
        }

        .card {
            border-radius: 16px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .back-dashboard {
            background-color: #cfe3ff !important;
            color: #1f2d3d !important;
            border: 1px solid #bcd4f4 !important;
            border-radius: 10px;
            font-weight: 600;
            padding: 10px 18px;
        }

        .training-header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .btn-training-action {
            border-radius: 10px;
            font-weight: 500;
            padding: 10px 16px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
            transition: all 0.2s ease-in-out;
            color: #fff !important;
        }

        .btn-training-action:hover {
            transform: translateY(-2px);
            color: #fff !important;
        }

        .btn-training-topics {
            background-color: #0d6efd !important;
            border: 1px solid #0b5ed7 !important;
        }

        .btn-training-topics:hover {
            background-color: #0b5ed7 !important;
        }

        .btn-training-calendar {
            background-color: #2563eb !important;
            border: 1px solid #1d4ed8 !important;
        }

        .btn-training-calendar:hover {
            background-color: #1d4ed8 !important;
        }

        @media (max-width: 767.98px) {
            .training-header-actions {
                width: 100%;
                flex-direction: column;
            }

            .training-header-actions .btn,
            .training-header-actions a {
                width: 100%;
            }
        }

        .stat-row {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 12px;
            margin-bottom: 20px;
        }

        @media (max-width: 991.98px) {
            .stat-row {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .stat-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .stat-card {
            border-radius: 14px;
            padding: 14px 16px;
            text-align: center;
            background: #fff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, .05);
            cursor: pointer;
            transition: transform .15s, box-shadow .15s, border-color .15s;
            border: 1px solid transparent;
            text-decoration: none;
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 14px rgba(0, 0, 0, .10);
            text-decoration: none;
        }

        .stat-card.active {
            outline: 3px solid #0d6efd;
            outline-offset: 2px;
        }

        .stat-card .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1;
        }

        .stat-card .stat-label {
            font-size: 0.85rem;
            margin-top: 4px;
            font-weight: 700;
        }

        /* Totale */
        .stat-card.all {
            background: #f8fafc;
            border-color: #cbd5e1;
        }

        .stat-card.all .stat-num,
        .stat-card.all .stat-label {
            color: #1f2937;
        }

        /* Conforme - verde */
        .stat-card.compliant {
            background: #dcfce7;
            border-color: #86efac;
        }

        .stat-card.compliant .stat-num,
        .stat-card.compliant .stat-label {
            color: #166534;
        }

        /* Da aggiornare - arancio */
        .stat-card.due_soon {
            background: #ffedd5;
            border-color: #fdba74;
        }

        .stat-card.due_soon .stat-num,
        .stat-card.due_soon .stat-label {
            color: #9a3412;
        }

        /* Scaduti - rosso */
        .stat-card.expired {
            background: #fee2e2;
            border-color: #fca5a5;
        }

        .stat-card.expired .stat-num,
        .stat-card.expired .stat-label {
            color: #991b1b;
        }

        /* Non presenti - rosso diverso / bordeaux */
        .stat-card.not_present {
            background: #fce7f3;
            border-color: #f9a8d4;
        }

        .stat-card.not_present .stat-num,
        .stat-card.not_present .stat-label {
            color: #9d174d;
        }

        .pill {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .pill-success {
            background: #d1fae5;
            color: #065f46;
        }

        .pill-warning {
            background: #fef3c7;
            color: #92400e;
        }

        .pill-danger {
            background: #fee2e2;
            color: #991b1b;
        }

        .pill-secondary {
            background: #e5e7eb;
            color: #374151;
        }

        .pill-role {
            background: #fff;
            color: #334155;
            border: 1px solid #cbd5e1;
        }

        .pill-covered {
            background: #ede9fe;
            color: #5b21b6;
            border: 1px solid #ddd6fe;
            font-size: .78rem;
            margin-left: 6px;
            white-space: nowrap;
        }

        tr.row-covered {
            background-color: #faf5ff !important;
        }

        .pill-dept-inline {
            padding: 2px 8px;
        }

        .tr-card {
            border: 1px solid #e2e8f0;
            border-radius: 14px;
            padding: 14px 16px;
            margin-bottom: 12px;
            background: #fff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
        }

        .tr-card .name a {
            color: #1f2937;
            font-weight: 600;
            text-decoration: none;
        }

        .tr-card .topic {
            color: #475569;
        }

        .tr-card .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 14px;
            font-size: 0.85rem;
            color: #64748b;
            margin-top: 8px;
        }

        .tr-card .meta b {
            color: #1f2937;
            font-weight: 600;
        }

        @media (max-width: 767.98px) {
            .card-header {
                flex-direction: column;
                align-items: flex-start !important;
                gap: .5rem;
            }

            .back-dashboard {
                width: 100%;
            }
        }
    </style>
</head>

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

        <div class="page-wrapper">
            <div class="page-content">
                <div class="card p-3">
                    <div class="card-header d-flex justify-content-between align-items-center flex-wrap gap-2">
                        <h5 class="mb-0">📚 Gestione Formazione</h5>

                        <div class="training-header-actions">
                            <button type="button" class="btn btn-primary" id="btnBulkTraining">
                                ➕ Aggiungi sessione
                            </button>

                            <?php if (userCan('hr.training_topics.view')): ?>
                                <a href="training_topics.php" class="btn btn-training-action btn-training-topics">
                                    📘 Corsi Formazione
                                </a>
                            <?php endif; ?>

                            <?php if (userCan('hr.trainings.view')): ?>
                                <a href="training_calendar.php" class="btn btn-training-action btn-training-calendar">
                                    📅 Calendario Formazione
                                </a>
                            <?php endif; ?>

                            <button type="button" class="btn back-dashboard" onclick="location.href='production_dashboard.php'">
                                ↩️ Torna alla Dashboard
                            </button>
                        </div>
                    </div>

                    <div class="card-body">
                        <!-- COUNTERS -->
                        <div class="stat-row">
                            <a class="stat-card all <?= $fStatus === '' ? 'active' : '' ?>" href="?<?= http_build_query(array_filter(['employee_id' => $fEmployeeId, 'topic_id' => $fTopicId, 'type' => $fType, 'department_id' => $fDepartmentId])) ?>">
                                <div class="stat-num"><?= (int)$counters['all'] ?></div>
                                <div class="stat-label">Tutte</div>
                            </a>
                            <a class="stat-card compliant <?= $fStatus === 'compliant' ? 'active' : '' ?>" href="?<?= http_build_query(array_filter(['status' => 'compliant', 'employee_id' => $fEmployeeId, 'topic_id' => $fTopicId, 'type' => $fType, 'department_id' => $fDepartmentId])) ?>">
                                <div class="stat-num"><?= (int)($counters['compliant'] ?? 0) ?></div>
                                <div class="stat-label">Conformi</div>
                            </a>
                            <a class="stat-card due_soon <?= $fStatus === 'due_soon' ? 'active' : '' ?>" href="?<?= http_build_query(array_filter(['status' => 'due_soon', 'employee_id' => $fEmployeeId, 'topic_id' => $fTopicId, 'type' => $fType, 'department_id' => $fDepartmentId])) ?>">
                                <div class="stat-num"><?= (int)($counters['due_soon'] ?? 0) ?></div>
                                <div class="stat-label">Da aggiornare</div>
                            </a>
                            <a class="stat-card expired <?= $fStatus === 'expired' ? 'active' : '' ?>" href="?<?= http_build_query(array_filter(['status' => 'expired', 'employee_id' => $fEmployeeId, 'topic_id' => $fTopicId, 'type' => $fType, 'department_id' => $fDepartmentId])) ?>">
                                <div class="stat-num"><?= (int)($counters['expired'] ?? 0) ?></div>
                                <div class="stat-label">Scaduti</div>
                            </a>
                            <a class="stat-card not_present <?= $fStatus === 'not_present' ? 'active' : '' ?>" href="?<?= http_build_query(array_filter(['status' => 'not_present', 'employee_id' => $fEmployeeId, 'topic_id' => $fTopicId, 'department_id' => $fDepartmentId])) ?>">
                                <div class="stat-num"><?= (int)($counters['not_present'] ?? 0) ?></div>
                                <div class="stat-label">Non presenti</div>
                            </a>
                        </div>

                        <!-- FILTERS -->
                        <form method="get" class="row g-2 mb-3" id="filtersForm">
                            <input type="hidden" name="status" value="<?= htmlspecialchars($fStatus, ENT_QUOTES) ?>">
                            <div class="col-12 col-md-6 col-lg-3">
                                <label class="form-label small fw-semibold">Dipendente</label>
                                <select name="employee_id" class="form-select form-select-sm" onchange="this.form.submit()">
                                    <option value="">— Tutti —</option>
                                    <?php foreach ($employees as $e): ?>
                                        <option value="<?= (int)$e['id'] ?>" <?= $fEmployeeId === (int)$e['id'] ? 'selected' : '' ?>>
                                            <?= htmlspecialchars(trim($e['first_name'] . ' ' . $e['last_name'])) ?>
                                            <?php if (!empty($e['employee_code'])): ?>(<?= htmlspecialchars($e['employee_code']) ?>)<?php endif; ?>
                                        </option>
                                    <?php endforeach; ?>
                                </select>
                            </div>
                            <div class="col-12 col-md-6 col-lg-3">
                                <label class="form-label small fw-semibold">Corso</label>
                                <select name="topic_id" class="form-select form-select-sm" onchange="this.form.submit()">
                                    <option value="">— Tutti —</option>
                                    <?php foreach ($topics as $t): ?>
                                        <option value="<?= (int)$t['id'] ?>" <?= $fTopicId === (int)$t['id'] ? 'selected' : '' ?>>
                                            <?= htmlspecialchars($t['name']) ?>
                                        </option>
                                    <?php endforeach; ?>
                                </select>
                            </div>
                            <div class="col-12 col-md-6 col-lg-3">
                                <label class="form-label small fw-semibold">Reparto</label>
                                <select name="department_id" class="form-select form-select-sm" onchange="this.form.submit()">
                                    <option value="">— Tutti —</option>
                                    <?php foreach ($departments as $d): ?>
                                        <option value="<?= (int)$d['id'] ?>" <?= $fDepartmentId === (int)$d['id'] ? 'selected' : '' ?>>
                                            <?= htmlspecialchars($d['name']) ?>
                                        </option>
                                    <?php endforeach; ?>
                                </select>
                            </div>
                            <div class="col-12 col-md-6 col-lg-3">
                                <label class="form-label small fw-semibold">Tipo</label>
                                <select name="type" class="form-select form-select-sm" onchange="this.form.submit()">
                                    <option value="">— Tutti —</option>
                                    <option value="initial" <?= $fType === 'initial'   ? 'selected' : '' ?>>Iniziale</option>
                                    <option value="refresher" <?= $fType === 'refresher' ? 'selected' : '' ?>>Aggiornamento</option>
                                </select>
                            </div>
                            <?php if ($fEmployeeId || $fTopicId || $fDepartmentId || $fType || $fStatus): ?>
                                <div class="col-12">
                                    <a href="trainings.php" class="btn btn-sm btn-outline-secondary">✖️ Pulisci filtri</a>
                                </div>
                            <?php endif; ?>
                        </form>

                        <div id="bulkBar" class="d-none align-items-center flex-wrap gap-2 mb-3 p-2" style="background:#fff6e5;border:1px solid #ffe0a6;border-radius:10px;">
                            <span class="fw-semibold"><span id="bulkSelCount">0</span> selezionati</span>
                            <button type="button" class="btn btn-sm btn-warning" id="btnBulkRenew">🔄 Aggiorna scadenza</button>
                            <button type="button" class="btn btn-sm btn-link text-decoration-none" id="btnBulkDeselect">Deseleziona</button>
                        </div>

                        <?php if (empty($filtered)): ?>
                            <div class="text-center text-muted py-4">
                                Nessuna formazione corrispondente ai filtri.
                            </div>
                        <?php else: ?>
                            <!-- DESKTOP TABLE -->
                            <div class="table-responsive d-none d-md-block">
                                <table class="table table-striped align-middle">
                                    <thead style="background-color:#cfe3ff;">
                                        <tr>
                                            <th style="width:36px"><input type="checkbox" class="form-check-input" id="checkAll" title="Seleziona tutti"></th>
                                            <th>Dipendente</th>
                                            <th>Reparto</th>
                                            <th>Corso</th>
                                            <th>Tipo</th>
                                            <th>Completato</th>
                                            <th>Prossimo agg.</th>
                                            <th>Stato</th>
                                            <th>Giorni</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        <?php foreach ($filtered as $r): ?>
                                            <?php
                                            $fullName = trim($r['first_name'] . ' ' . $r['last_name']);
                                            $typeLbl  = $r['training_type'] === 'refresher' ? 'Aggiornamento' : ($r['training_type'] === 'initial' ? 'Iniziale' : '—');
                                            $days     = $r['_status']['days'] ?? null;
                                            ?>
                                            <tr class="<?= !empty($r['_covered']) ? 'row-covered' : '' ?>">
                                                <td>
                                                    <?php if (!empty($r['id'])): ?>
                                                        <input type="checkbox" class="form-check-input row-check" value="<?= (int)$r['id'] ?>">
                                                    <?php endif; ?>
                                                </td>
                                                <td>
                                                    <a href="employee-profile.php?id=<?= (int)$r['employee_id'] ?>#tab-training" class="fw-semibold text-decoration-none">
                                                        <?= htmlspecialchars($fullName) ?>
                                                    </a>
                                                    <?php if (!empty($r['employee_code'])): ?>
                                                        <div class="small text-muted"><?= htmlspecialchars($r['employee_code']) ?></div>
                                                    <?php endif; ?>
                                                </td>
                                                <td>
                                                    <?php if (!empty($r['department_name'])): ?>
                                                        <span class="pill pill-dept-inline" style="background:<?= htmlspecialchars($r['department_color'] ?? '#e5e7eb', ENT_QUOTES) ?>20; color:<?= htmlspecialchars($r['department_color'] ?? '#374151', ENT_QUOTES) ?>;">
                                                            <?= htmlspecialchars($r['department_name']) ?>
                                                        </span>
                                                        <?php else: ?>—<?php endif; ?>
                                                </td>
                                                <td>
                                                    <?= htmlspecialchars($r['topic_name']) ?>
                                                    <?php if (!empty($r['_covered'])): ?>
                                                        <span class="pill pill-covered" title="Assorbito automaticamente dal corso <?= htmlspecialchars($r['_covered_by_name'], ENT_QUOTES) ?>">
                                                            ⛓️ Coperto da <?= htmlspecialchars($r['_covered_by_name']) ?>
                                                        </span>
                                                    <?php endif; ?>
                                                </td>
                                                <td><span class="pill pill-role"><?= $typeLbl ?></span></td>
                                                <td><?= fmtDate($r['completed_date']) ?></td>
                                                <td><?= fmtDate($r['next_due_date']) ?></td>
                                                <td><span class="pill pill-<?= $r['_status']['class'] ?>"><?= $r['_status']['label'] ?></span></td>
                                                <td>
                                                    <?php if ($days === null): ?>—
                                                <?php elseif ($days < 0): ?>
                                                    <span class="text-danger fw-semibold"><?= $days ?></span>
                                                <?php else: ?>
                                                    +<?= $days ?>
                                                <?php endif; ?>
                                                </td>
                                            </tr>
                                        <?php endforeach; ?>
                                    </tbody>
                                </table>
                            </div>

                            <!-- MOBILE CARDS -->
                            <div class="d-block d-md-none">
                                <?php foreach ($filtered as $r): ?>
                                    <?php
                                    $fullName = trim($r['first_name'] . ' ' . $r['last_name']);
                                    $typeLbl  = $r['training_type'] === 'refresher' ? 'Aggiornamento' : ($r['training_type'] === 'initial' ? 'Iniziale' : '—');
                                    $days     = $r['_status']['days'] ?? null;
                                    ?>
                                    <div class="tr-card">
                                        <div class="d-flex justify-content-between align-items-start gap-2 mb-1">
                                            <div class="name d-flex align-items-start gap-2">
                                                <?php if (!empty($r['id'])): ?>
                                                    <input type="checkbox" class="form-check-input row-check mt-1" value="<?= (int)$r['id'] ?>">
                                                <?php endif; ?>
                                                <a href="employee-profile.php?id=<?= (int)$r['employee_id'] ?>#tab-training">
                                                    <?= htmlspecialchars($fullName) ?>
                                                </a>
                                            </div>
                                            <span class="pill pill-<?= $r['_status']['class'] ?>"><?= $r['_status']['label'] ?></span>
                                        </div>
                                        <div class="topic">
                                            📖 <?= htmlspecialchars($r['topic_name']) ?>
                                            <?php if (!empty($r['_covered'])): ?>
                                                <div class="mt-1">
                                                    <span class="pill pill-covered">⛓️ Coperto da <?= htmlspecialchars($r['_covered_by_name']) ?></span>
                                                </div>
                                            <?php endif; ?>
                                        </div>
                                        <div class="meta">
                                            <span><b>Tipo:</b> <?= $typeLbl ?></span>
                                            <span><b>Completato:</b> <?= fmtDate($r['completed_date']) ?></span>
                                            <?php if ($r['next_due_date']): ?>
                                                <span><b>Prossimo:</b> <?= fmtDate($r['next_due_date']) ?>
                                                    <?php if ($days !== null && $days < 0): ?>
                                                        <span class="text-danger fw-semibold">(<?= $days ?>g)</span>
                                                    <?php elseif ($days !== null): ?>
                                                        (+<?= $days ?>g)
                                                    <?php endif; ?>
                                                </span>
                                            <?php endif; ?>
                                            <?php if (!empty($r['department_name'])): ?>
                                                <span><b>Reparto:</b> <?= htmlspecialchars($r['department_name']) ?></span>
                                            <?php endif; ?>
                                        </div>
                                    </div>
                                <?php endforeach; ?>
                            </div>
                        <?php endif; ?>

                    </div>
                </div>
            </div>
        </div>

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

    <!-- BULK TRAINING SESSION MODAL -->
    <div class="modal fade" id="bulkTrainingModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-dialog-centered">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">➕ Nuova sessione formativa</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
                </div>
                <form id="bulkTrainingForm">
                    <div class="modal-body" style="max-height:65vh; overflow-y:auto;">
                        <p class="text-muted small">Registra lo stesso corso, con gli stessi parametri, per più dipendenti contemporaneamente.</p>

                        <div class="row g-3">
                            <div class="col-12 col-md-6">
                                <label class="form-label fw-semibold">Corso <span class="text-danger">*</span></label>
                                <select id="bulkTopic" class="form-select" required>
                                    <option value="">— Seleziona —</option>
                                    <?php foreach ($topics as $t): ?>
                                        <option value="<?= (int)$t['id'] ?>"
                                            data-freq="<?= $t['default_frequency_months'] !== null ? (int)$t['default_frequency_months'] : '' ?>"
                                            data-rem="<?= $t['default_reminder_days'] !== null ? (int)$t['default_reminder_days'] : '' ?>">
                                            <?= htmlspecialchars($t['name'], ENT_QUOTES, 'UTF-8') ?>
                                        </option>
                                    <?php endforeach; ?>
                                </select>
                            </div>
                            <div class="col-6 col-md-3">
                                <label class="form-label fw-semibold">Data completamento <span class="text-danger">*</span></label>
                                <input type="date" id="bulkCompletedDate" class="form-control" value="<?= date('Y-m-d') ?>" required>
                            </div>
                            <div class="col-6 col-md-3">
                                <label class="form-label fw-semibold">Tipo</label>
                                <select id="bulkType" class="form-select">
                                    <option value="initial">Iniziale</option>
                                    <option value="refresher">Aggiornamento</option>
                                </select>
                            </div>

                            <div class="col-6 col-md-3">
                                <label class="form-label fw-semibold">Frequenza (mesi)</label>
                                <input type="number" id="bulkFreq" class="form-control" min="0" max="600" placeholder="default corso">
                                <div class="form-text">Vuoto = una tantum</div>
                            </div>
                            <div class="col-6 col-md-3">
                                <label class="form-label fw-semibold">Promemoria (giorni)</label>
                                <input type="number" id="bulkRem" class="form-control" min="0" max="365" placeholder="default corso">
                            </div>
                            <div class="col-12 col-md-6">
                                <label class="form-label fw-semibold">Erogato da</label>
                                <input type="text" id="bulkDeliveredBy" class="form-control" maxlength="255" placeholder="es. Ente formatore, docente interno...">
                            </div>
                            <div class="col-12">
                                <label class="form-label fw-semibold">Descrizione / note</label>
                                <textarea id="bulkDescription" class="form-control" rows="2"></textarea>
                            </div>

                            <div class="col-12">
                                <hr class="my-1">
                            </div>

                            <div class="col-12">
                                <label class="form-label fw-semibold">Dipendenti <span class="text-danger">*</span></label>
                                <div class="d-flex flex-wrap gap-2 mb-2 align-items-end">
                                    <div>
                                        <select id="bulkDept" class="form-select form-select-sm" style="min-width:180px">
                                            <option value="">— Reparto —</option>
                                            <?php foreach ($departments as $d): ?>
                                                <option value="<?= (int)$d['id'] ?>"><?= htmlspecialchars($d['name'], ENT_QUOTES, 'UTF-8') ?></option>
                                            <?php endforeach; ?>
                                        </select>
                                    </div>
                                    <button type="button" class="btn btn-sm btn-outline-primary" id="bulkAddDept">+ Aggiungi reparto</button>
                                    <button type="button" class="btn btn-sm btn-outline-secondary" id="bulkSelectAll">Tutti</button>
                                    <button type="button" class="btn btn-sm btn-outline-secondary" id="bulkClear">Pulisci</button>
                                </div>
                                <select id="bulkEmployees" class="form-select" multiple required>
                                    <?php foreach ($employees as $e): ?>
                                        <option value="<?= (int)$e['id'] ?>" data-dept="<?= (int)($e['department_id'] ?? 0) ?>">
                                            <?= htmlspecialchars(trim($e['last_name'] . ' ' . $e['first_name']), ENT_QUOTES, 'UTF-8') ?><?php if (!empty($e['employee_code'])): ?> (<?= htmlspecialchars($e['employee_code'], ENT_QUOTES, 'UTF-8') ?>)<?php endif; ?>
                                        </option>
                                    <?php endforeach; ?>
                                </select>
                                <div class="form-text"><span id="bulkCount">0</span> dipendenti selezionati</div>
                            </div>
                        </div>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-light border" data-bs-dismiss="modal">Annulla</button>
                        <button type="submit" class="btn btn-primary" id="bulkSaveBtn">Registra formazione</button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    <?php include('jsinclude.php'); ?>
    <script>
        document.addEventListener('DOMContentLoaded', function() {
            var bulkModal = new bootstrap.Modal(document.getElementById('bulkTrainingModal'));
            var $emp = $('#bulkEmployees');

            $emp.select2({
                theme: 'bootstrap-5',
                placeholder: 'Seleziona dipendenti...',
                dropdownParent: $('#bulkTrainingModal'),
                closeOnSelect: false,
                width: '100%'
            });

            function updateCount() {
                document.getElementById('bulkCount').textContent = ($emp.val() || []).length;
            }
            $emp.on('change', updateCount);

            document.getElementById('btnBulkTraining').addEventListener('click', function() {
                document.getElementById('bulkTrainingForm').reset();
                $emp.val(null).trigger('change');
                document.getElementById('bulkTopic').value = '';
                document.getElementById('bulkType').value = 'initial';
                updateCount();
                bulkModal.show();
            });

            // Prefill frequency/reminder from the selected course
            document.getElementById('bulkTopic').addEventListener('change', function() {
                var opt = this.options[this.selectedIndex];
                document.getElementById('bulkFreq').value = opt ? (opt.getAttribute('data-freq') || '') : '';
                document.getElementById('bulkRem').value = opt ? (opt.getAttribute('data-rem') || '') : '';
            });

            // Add all employees of the chosen department to the selection
            document.getElementById('bulkAddDept').addEventListener('click', function() {
                var dept = document.getElementById('bulkDept').value;
                if (!dept) return;
                var current = ($emp.val() || []).map(String);
                $emp.find('option').each(function() {
                    if (this.getAttribute('data-dept') === String(dept) && current.indexOf(this.value) === -1) {
                        current.push(this.value);
                    }
                });
                $emp.val(current).trigger('change');
            });

            document.getElementById('bulkSelectAll').addEventListener('click', function() {
                var all = $emp.find('option').map(function() {
                    return this.value;
                }).get();
                $emp.val(all).trigger('change');
            });
            document.getElementById('bulkClear').addEventListener('click', function() {
                $emp.val(null).trigger('change');
            });

            document.getElementById('bulkTrainingForm').addEventListener('submit', function(e) {
                e.preventDefault();
                var topicId = document.getElementById('bulkTopic').value;
                var completed = document.getElementById('bulkCompletedDate').value;
                var emps = $emp.val() || [];

                if (!topicId) {
                    Swal.fire('Attenzione', 'Selezionare un corso.', 'warning');
                    return;
                }
                if (!completed) {
                    Swal.fire('Attenzione', 'Indicare la data di completamento.', 'warning');
                    return;
                }
                if (emps.length === 0) {
                    Swal.fire('Attenzione', 'Selezionare almeno un dipendente.', 'warning');
                    return;
                }

                var btn = document.getElementById('bulkSaveBtn');
                btn.disabled = true;
                var orig = btn.innerHTML;
                btn.innerHTML = '<span class="spinner-border spinner-border-sm me-1"></span> Salvataggio...';

                var fd = new FormData();
                fd.append('training_topic_id', topicId);
                fd.append('completed_date', completed);
                fd.append('training_type', document.getElementById('bulkType').value);
                fd.append('delivered_by', document.getElementById('bulkDeliveredBy').value);
                fd.append('description', document.getElementById('bulkDescription').value);
                fd.append('update_frequency_months', document.getElementById('bulkFreq').value);
                fd.append('reminder_days', document.getElementById('bulkRem').value);
                emps.forEach(function(id) {
                    fd.append('employee_ids[]', id);
                });

                fetch('ajax/trainings/save_bulk_training.php', {
                        method: 'POST',
                        body: fd
                    })
                    .then(function(r) {
                        return r.json();
                    })
                    .then(function(data) {
                        if (data.success) {
                            bulkModal.hide();
                            Swal.fire({
                                    icon: 'success',
                                    title: 'Fatto',
                                    text: data.message,
                                    timer: 1800,
                                    showConfirmButton: false
                                })
                                .then(function() {
                                    location.reload();
                                });
                        } else {
                            btn.disabled = false;
                            btn.innerHTML = orig;
                            Swal.fire('Errore', data.message || 'Errore.', 'error');
                        }
                    })
                    .catch(function() {
                        btn.disabled = false;
                        btn.innerHTML = orig;
                        Swal.fire('Errore', 'Errore di connessione.', 'error');
                    });
            });
        });
    </script>

    <!-- BULK RENEW DEADLINE MODAL -->
    <div class="modal fade" id="bulkRenewModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-dialog-centered">
            <div class="modal-content">
                <form id="bulkRenewForm">
                    <div class="modal-header">
                        <h5 class="modal-title">🔄 Aggiorna scadenza</h5>
                        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
                    </div>
                    <div class="modal-body">
                        <p class="text-muted small">Imposta la data di completamento per <b id="renewCount">0</b> record selezionati. Le prossime scadenze verranno ricalcolate in base alla frequenza di ciascun corso.</p>
                        <label class="form-label fw-semibold">Nuova data di completamento</label>
                        <input type="date" id="renewDate" class="form-control" value="<?= date('Y-m-d') ?>" required>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-light border" data-bs-dismiss="modal">Annulla</button>
                        <button type="submit" class="btn btn-warning" id="renewSaveBtn">Aggiorna</button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            var renewModal = new bootstrap.Modal(document.getElementById('bulkRenewModal'));
            var checkAll = document.getElementById('checkAll');

            function checkedIds() {
                return Array.prototype.slice.call(document.querySelectorAll('.row-check:checked'))
                    .map(function(c) {
                        return c.value;
                    });
            }

            function refreshBulkBar() {
                var ids = checkedIds();
                var bar = document.getElementById('bulkBar');
                document.getElementById('bulkSelCount').textContent = ids.length;
                if (ids.length > 0) {
                    bar.classList.remove('d-none');
                    bar.classList.add('d-flex');
                } else {
                    bar.classList.add('d-none');
                    bar.classList.remove('d-flex');
                }
                var all = document.querySelectorAll('.row-check');
                if (checkAll) checkAll.checked = (all.length > 0 && ids.length === all.length);
            }

            document.addEventListener('change', function(e) {
                if (e.target && e.target.classList && e.target.classList.contains('row-check')) refreshBulkBar();
            });
            if (checkAll) checkAll.addEventListener('change', function() {
                document.querySelectorAll('.row-check').forEach(function(c) {
                    c.checked = checkAll.checked;
                });
                refreshBulkBar();
            });
            document.getElementById('btnBulkDeselect').addEventListener('click', function() {
                document.querySelectorAll('.row-check').forEach(function(c) {
                    c.checked = false;
                });
                if (checkAll) checkAll.checked = false;
                refreshBulkBar();
            });

            document.getElementById('btnBulkRenew').addEventListener('click', function() {
                var ids = checkedIds();
                if (ids.length === 0) return;
                document.getElementById('renewCount').textContent = ids.length;
                renewModal.show();
            });

            document.getElementById('bulkRenewForm').addEventListener('submit', function(e) {
                e.preventDefault();
                var ids = checkedIds();
                var date = document.getElementById('renewDate').value;
                if (ids.length === 0) {
                    renewModal.hide();
                    return;
                }
                if (!date) {
                    Swal.fire('Attenzione', 'Indicare la data.', 'warning');
                    return;
                }

                var btn = document.getElementById('renewSaveBtn');
                btn.disabled = true;
                var orig = btn.innerHTML;
                btn.innerHTML = '<span class="spinner-border spinner-border-sm me-1"></span> Salvataggio...';

                var fd = new FormData();
                fd.append('completed_date', date);
                ids.forEach(function(id) {
                    fd.append('training_ids[]', id);
                });

                fetch('ajax/trainings/bulk_update_deadline.php', {
                        method: 'POST',
                        body: fd
                    })
                    .then(function(r) {
                        return r.json();
                    })
                    .then(function(data) {
                        if (data.success) {
                            renewModal.hide();
                            Swal.fire({
                                    icon: 'success',
                                    title: 'Fatto',
                                    text: data.message,
                                    timer: 1800,
                                    showConfirmButton: false
                                })
                                .then(function() {
                                    location.reload();
                                });
                        } else {
                            btn.disabled = false;
                            btn.innerHTML = orig;
                            Swal.fire('Errore', data.message || 'Errore.', 'error');
                        }
                    })
                    .catch(function() {
                        btn.disabled = false;
                        btn.innerHTML = orig;
                        Swal.fire('Errore', 'Errore di connessione.', 'error');
                    });
            });
        });
    </script>
</body>

</html>