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

/**
 * Connessione unica PDO (singleton).
 */
$pdo = DBHandlerSelect::getInstance()->getConnection();

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

function teacherInitials(string $first, string $last): string
{
    $ini = mb_strtoupper(mb_substr(trim($first), 0, 1) . mb_substr(trim($last), 0, 1));
    return $ini !== '' ? $ini : '?';
}

function teacherColor(string $seed): string
{
    $palette = ['#1ebf73', '#2980b9', '#8e44ad', '#e67e22', '#16a085', '#c0392b', '#2c3e50', '#b08d57'];
    return $palette[abs(crc32($seed)) % count($palette)];
}

$message = $_GET['message'] ?? 'N';
$insertFeedback = null;

/* -------------------------------------------------------------------------
 * Insegnanti (titolare per primo, poi attivi, poi alfabetico)
 * ---------------------------------------------------------------------- */
$teachers = $pdo->query(
    "SELECT idemployee, nameemployee, surnameemployee, photo, is_owner, active
     FROM employee
     ORDER BY is_owner DESC, active DESC, surnameemployee, nameemployee"
)->fetchAll();

$teachersById = [];
$ownerId = 0;
foreach ($teachers as $t) {
    $teachersById[(int) $t['idemployee']] = $t;
    if ($t['is_owner'] === 'Y' && !$ownerId) {
        $ownerId = (int) $t['idemployee'];
    }
}

/* -------------------------------------------------------------------------
 * Assegnazione insegnante a una classe esistente (POST)
 * ---------------------------------------------------------------------- */
if (($_POST['action'] ?? '') === 'assignteacher') {
    $idservice = (int) ($_POST['idservice'] ?? 0);
    $idteacher = (int) ($_POST['idteacher'] ?? 0);

    if ($idservice > 0 && isset($teachersById[$idteacher])) {
        $stmt = $pdo->prepare("UPDATE service SET idteacher = :t WHERE idservice = :s");
        $stmt->execute([':t' => $idteacher, ':s' => $idservice]);
        header('Location: ' . $_SERVER['PHP_SELF'] . '?message=teacherassigned');
    } else {
        header('Location: ' . $_SERVER['PHP_SELF'] . '?message=teachererror');
    }
    exit;
}

/* -------------------------------------------------------------------------
 * Inserimento nuova classe (POST) con prepared statement
 * ---------------------------------------------------------------------- */
if (isset($_POST['classinsert']) && $_POST['classinsert'] === 'Y') {
    $servicename    = trim($_POST['servicename'] ?? '');
    $wpcatalog      = $_POST['wpcatalognumber'] ?? '';
    $day            = trim($_POST['classdayday'] ?? '');
    $time           = trim($_POST['classtime'] ?? '');
    $category       = $_POST['servicecategory'] ?? '';
    $maxcapacity    = $_POST['maxcapacity'] ?? '';
    $colorclass     = trim($_POST['colorclass'] ?? '');
    $classduration  = $_POST['classduration'] ?? '';
    $idteacher      = (int) ($_POST['idteacher'] ?? 0);

    if ($servicename === '') {
        $insertFeedback = ['type' => 'error', 'text' => 'La descrizione della classe è obbligatoria.'];
    } elseif (!isset($teachersById[$idteacher])) {
        $insertFeedback = ['type' => 'error', 'text' => 'Seleziona l\'insegnante della classe.'];
    } else {
        $sql = "INSERT INTO service
                    (servicename, wpcatalognumber, day, time, category, maxcapacity, colorclass, classduration, idteacher)
                VALUES
                    (:servicename, :wpcatalog, :day, :time, :category, :maxcapacity, :colorclass, :classduration, :idteacher)";
        $stmt = $pdo->prepare($sql);
        $ok = $stmt->execute([
            ':servicename'   => $servicename,
            ':wpcatalog'     => $wpcatalog !== '' ? (int) $wpcatalog : null,
            ':day'           => $day,
            ':time'          => $time,
            ':category'      => $category !== '' ? (int) $category : null,
            ':maxcapacity'   => $maxcapacity !== '' ? (int) $maxcapacity : null,
            ':colorclass'    => $colorclass,
            ':classduration' => $classduration !== '' ? (float) $classduration : null,
            ':idteacher'     => $idteacher,
        ]);

        if ($ok) {
            // Redirect per evitare re-invio del form al refresh (pattern PRG)
            header('Location: ' . $_SERVER['PHP_SELF'] . '?message=inserted');
            exit;
        }
        $insertFeedback = ['type' => 'error', 'text' => 'Errore durante l\'inserimento della classe. Riprova.'];
    }
}

/* -------------------------------------------------------------------------
 * Categorie per il dropdown
 * ---------------------------------------------------------------------- */
$categories = $pdo->query("SELECT idservicecategory, namecategory FROM servicecategory ORDER BY namecategory")->fetchAll();

/* -------------------------------------------------------------------------
 * Elenco classi esistenti
 * ---------------------------------------------------------------------- */
$services = $pdo->query(
    "SELECT service.*, servicecategory.namecategory
     FROM service
     LEFT JOIN servicecategory ON service.category = servicecategory.idservicecategory
     ORDER BY service.servicename"
)->fetchAll();

// Propagazioni già effettuate, raggruppate per servizio
$propagationsByService = [];
$propRows = $pdo->query(
    "SELECT p.idpropagation, p.idservice, p.token, p.startdate, p.enddate, p.created_at,
            COUNT(s.idserviceschedule) AS occorrenze
     FROM propagation p
     LEFT JOIN serviceschedule s ON s.propagation_token = p.token
     GROUP BY p.idpropagation
     ORDER BY p.created_at DESC"
)->fetchAll();
foreach ($propRows as $pr) {
    $propagationsByService[$pr['idservice']][] = $pr;
}

/**
 * Opzioni del select insegnanti.
 * Gli insegnanti non attivi compaiono solo se già assegnati a quella classe.
 */
function teacherOptions(array $teachers, int $selectedId): string
{
    $html = '';
    $found = false;
    foreach ($teachers as $t) {
        $tid = (int) $t['idemployee'];
        $isSel = $tid === $selectedId;
        if ($t['active'] !== 'Y' && !$isSel) {
            continue;
        }
        if ($isSel) $found = true;
        $label = trim($t['nameemployee'] . ' ' . $t['surnameemployee'])
            . ($t['is_owner'] === 'Y' ? ' (titolare)' : '')
            . ($t['active'] !== 'Y' ? ' (non attivo)' : '');
        $html .= '<option value="' . $tid . '"' . ($isSel ? ' selected' : '') . '>' . e($label) . '</option>';
    }
    if (!$found) {
        $html = '<option value="" selected disabled>— Non assegnato —</option>' . $html;
    }
    return $html;
}
?>
<!doctype html>
<html lang="it">

<head>
    <meta charset="utf-8" />
    <title>YogiBook - Inserimento e Propagazione Classi</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta content="YogiBook - Prenotazione facile YogaSoul" name="description" />
    <meta content="Advanced Creative Solutions" name="author" />
    <link rel="shortcut icon" href="assets/images/favicon.ico">

    <link href="assets/css/bootstrap.min.css" id="bootstrap-style" rel="stylesheet" type="text/css" />
    <link href="assets/css/icons.min.css" rel="stylesheet" type="text/css" />
    <link href="assets/css/app.min.css" id="app-style" rel="stylesheet" type="text/css" />
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css">
    <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/spectrum/1.8.1/spectrum.min.css">

    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/spectrum/1.8.1/spectrum.min.js"></script>

    <style>
        .admin-card {
            border: none;
            border-radius: 14px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .admin-card .card-body {
            padding: 26px 30px;
        }

        .section-title {
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: #6b7280;
            margin-bottom: 4px;
        }

        .section-lead {
            color: #9ca3af;
            font-size: 14px;
            margin-bottom: 22px;
        }

        .form-label {
            font-weight: 600;
            font-size: 14px;
            color: #374151;
        }

        .form-control,
        .form-select {
            border-radius: 8px;
            border: 1px solid #e2e4e9;
            padding: 10px 12px;
        }

        .form-control:focus,
        .form-select:focus {
            border-color: #1ebf73;
            box-shadow: 0 0 0 3px rgba(30, 191, 115, 0.12);
        }

        .btn-save {
            border-radius: 8px;
            padding: 10px 26px;
            font-weight: 600;
        }

        .class-table thead th {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
            color: #6b7280;
            border-bottom: 2px solid #eef0f3;
        }

        .class-table td {
            vertical-align: middle;
        }

        .color-dot {
            display: inline-block;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            border: 1px solid rgba(0, 0, 0, 0.1);
            vertical-align: middle;
            margin-right: 6px;
        }

        .expanded-row {
            display: none;
        }

        .expanded-row.expanded {
            display: table-row;
        }

        .expanded-content {
            background: #f8fbf9;
            border-radius: 10px;
            padding: 18px 20px;
            margin: 8px 0;
        }

        .action-btns .btn {
            margin: 2px;
        }

        .teacher-cell {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 210px;
        }

        .teacher-mini {
            flex: 0 0 30px;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            object-fit: cover;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 11px;
            font-weight: 800;
        }

        .teacher-mini.none {
            background: #f3f4f6;
            color: #c0c4cc;
        }

        .teacher-select {
            padding: 5px 30px 5px 10px !important;
            font-size: 13px;
        }

        .teacher-select.unassigned {
            border-color: #f0b27a;
            background-color: #fff8f1;
            color: #b9770e;
        }
    </style>
</head>

<body>
    <div id="layout-wrapper">
        <header id="page-topbar" class="isvertical-topbar">
            <div class="navbar-header">
                <div class="d-flex">
                    <?php include('include/logoarea.php'); ?>
                    <button type="button" class="btn btn-sm px-3 font-size-24 header-item waves-effect vertical-menu-btn">
                        <i class="bx bx-menu align-middle"></i>
                    </button>
                    <div class="page-title-box align-self-center d-none d-md-block">
                        <h4 class="page-title mb-0">Inserimento e Propagazione Classi</h4>
                    </div>
                </div>
                <div class="d-flex">
                    <?php include('include/languageselection.php'); ?>
                    <?php include('include/profiletopbar.php'); ?>
                </div>
            </div>
        </header>
        <?php include('include/sidebar.php'); ?>
        <header class="ishorizontal-topbar">
            <div class="navbar-header">
                <div class="d-flex"></div>
            </div>
            <div class="topnav">
                <div class="container-fluid">
                    <nav class="navbar navbar-light navbar-expand-lg topnav-menu"></nav>
                </div>
            </div>
        </header>

        <div class="main-content">
            <div class="page-content">
                <div class="container-fluid">

                    <?php if ($message === 'inserted') : ?>
                        <div class="alert alert-success" role="alert">Classe inserita con successo.</div>
                    <?php endif; ?>
                    <?php if ($message === 'teacherassigned') : ?>
                        <div class="alert alert-success" role="alert">Insegnante assegnato con successo.</div>
                    <?php endif; ?>
                    <?php if ($message === 'teachererror') : ?>
                        <div class="alert alert-danger" role="alert">Impossibile assegnare l'insegnante. Riprova.</div>
                    <?php endif; ?>
                    <?php if ($message === 'success') : ?>
                        <div class="alert alert-success" role="alert">Propagazione avvenuta con successo.</div>
                    <?php endif; ?>
                    <?php if ($message === 'propdeleted') : ?>
                        <div class="alert alert-success" role="alert">Propagazione eliminata con successo.</div>
                    <?php endif; ?>
                    <?php if ($message === 'confirmdelete') : ?>
                        <div class="alert alert-warning" role="alert">
                            Attenzione: questa propagazione ha <strong><?php echo (int) ($_GET['count'] ?? 0); ?></strong> prenotazioni utente collegate.
                            Vuoi eliminarla comunque insieme alle lezioni?
                            <a href="cancelpropagation.php?token=<?php echo e($_GET['token'] ?? ''); ?>&confirm=Y"
                                class="btn btn-danger btn-sm ms-2"
                                onclick="return confirm('Confermi la cancellazione definitiva?');">
                                Sì, elimina tutto
                            </a>
                            <a href="admin-services.php" class="btn btn-secondary btn-sm ms-1">Annulla</a>
                        </div>
                    <?php endif; ?>
                    <?php if ($insertFeedback) : ?>
                        <div class="alert alert-<?php echo $insertFeedback['type'] === 'success' ? 'success' : 'danger'; ?>" role="alert">
                            <?php echo e($insertFeedback['text']); ?>
                        </div>
                    <?php endif; ?>
                    <?php if (empty($teachers)) : ?>
                        <div class="alert alert-warning" role="alert">
                            Non ci sono insegnanti: <a href="insegnanti.php">aggiungine almeno uno</a> prima di creare una classe.
                        </div>
                    <?php endif; ?>

                    <!-- Form inserimento classe -->
                    <div class="row">
                        <div class="col-12">
                            <div class="card admin-card mb-4">
                                <div class="card-body">
                                    <div class="section-title">Nuova classe</div>
                                    <p class="section-lead">Inserisci i dettagli della classe da aggiungere al catalogo.</p>

                                    <form method="post" name="insertclass" id="insertclass">
                                        <input type="hidden" name="classinsert" value="Y">

                                        <div class="mb-3">
                                            <label for="servicename" class="form-label">Descrizione classe</label>
                                            <input type="text" class="form-control" placeholder="Es. Hatha Yoga" id="servicename" name="servicename" required>
                                        </div>

                                        <div class="row">
                                            <div class="col-md-6">
                                                <div class="mb-3">
                                                    <label for="wpcatalognumber" class="form-label">WP catalog number</label>
                                                    <input type="text" class="form-control" placeholder="WP Number" id="wpcatalognumber" name="wpcatalognumber">
                                                </div>
                                            </div>
                                            <div class="col-md-6">
                                                <div class="mb-3">
                                                    <label for="classdayday" class="form-label">Giorno</label>
                                                    <select class="form-select" id="classdayday" name="classdayday">
                                                        <option value="">Seleziona</option>
                                                        <option value="Monday">Lunedì</option>
                                                        <option value="Tuesday">Martedì</option>
                                                        <option value="Wednesday">Mercoledì</option>
                                                        <option value="Thursday">Giovedì</option>
                                                        <option value="Friday">Venerdì</option>
                                                        <option value="Saturday">Sabato</option>
                                                        <option value="Sunday">Domenica</option>
                                                    </select>
                                                </div>
                                            </div>
                                        </div>

                                        <div class="row">
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="classtime" class="form-label">Ora</label>
                                                    <input type="text" class="form-control" placeholder="Es. 18:30" id="classtime" name="classtime">
                                                </div>
                                            </div>
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="classduration" class="form-label">Durata (ore)</label>
                                                    <input type="text" class="form-control" placeholder="Es. 1.5" id="classduration" name="classduration">
                                                </div>
                                            </div>
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="servicecategory" class="form-label">Categoria</label>
                                                    <select name="servicecategory" id="servicecategory" class="form-select">
                                                        <option value="">Seleziona</option>
                                                        <?php foreach ($categories as $cat) : ?>
                                                            <option value="<?php echo e($cat['idservicecategory']); ?>">
                                                                <?php echo e($cat['namecategory']); ?>
                                                            </option>
                                                        <?php endforeach; ?>
                                                    </select>
                                                </div>
                                            </div>
                                        </div>

                                        <div class="row">
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="maxcapacity" class="form-label">Capacità massima</label>
                                                    <input type="text" class="form-control" placeholder="Es. 12" id="maxcapacity" name="maxcapacity">
                                                </div>
                                            </div>
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="colorclass" class="form-label">Colore classe</label>
                                                    <input type="text" class="form-control" id="colorclass" name="colorclass" value="#1ebf73">
                                                </div>
                                            </div>
                                            <div class="col-lg-4">
                                                <div class="mb-3">
                                                    <label for="idteacher" class="form-label">Insegnante</label>
                                                    <select name="idteacher" id="idteacher" class="form-select" required>
                                                        <?php echo teacherOptions($teachers, $ownerId); ?>
                                                    </select>
                                                </div>
                                            </div>
                                        </div>

                                        <button type="submit" class="btn btn-primary btn-save">Inserisci classe</button>
                                    </form>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Elenco classi -->
                    <div class="row">
                        <div class="col-12">
                            <div class="card admin-card">
                                <div class="card-body">
                                    <div class="section-title">Classi esistenti</div>
                                    <p class="section-lead">Propaga una classe sul calendario, associala, assegna l'insegnante o modificane i dettagli.</p>

                                    <div class="table-responsive">
                                        <table class="table class-table align-middle mb-0">
                                            <thead>
                                                <tr>
                                                    <th>Classe</th>
                                                    <th>Giorno</th>
                                                    <th>Orario</th>
                                                    <th>Durata</th>
                                                    <th>Categoria</th>
                                                    <th>Insegnante</th>
                                                    <th class="text-end">Azioni</th>
                                                </tr>
                                            </thead>
                                            <tbody>
                                                <?php if (empty($services)) : ?>
                                                    <tr>
                                                        <td colspan="7" class="text-center text-muted py-4">Nessuna classe presente.</td>
                                                    </tr>
                                                <?php else : ?>
                                                    <?php foreach ($services as $svc) :
                                                        $svcTeacherId = (int) $svc['idteacher'];
                                                        $svcTeacher = $teachersById[$svcTeacherId] ?? null;
                                                    ?>
                                                        <tr>
                                                            <td>
                                                                <span class="color-dot" style="background-color: <?php echo e($svc['colorclass'] ?: '#ccc'); ?>;"></span>
                                                                <span class="font-size-14"><?php echo e($svc['servicename']); ?></span>
                                                            </td>
                                                            <td><?php echo e($svc['day']); ?></td>
                                                            <td><?php echo e($svc['time']); ?></td>
                                                            <td>
                                                                <i class="mdi mdi-clock-time-nine-outline align-middle font-size-16 me-1"></i>
                                                                <?php echo e($svc['classduration']); ?>
                                                            </td>
                                                            <td><?php echo e($svc['namecategory']); ?></td>
                                                            <td>
                                                                <form method="post" class="teacher-cell">
                                                                    <input type="hidden" name="action" value="assignteacher">
                                                                    <input type="hidden" name="idservice" value="<?php echo (int) $svc['idservice']; ?>">
                                                                    <?php if ($svcTeacher && $svcTeacher['photo']) : ?>
                                                                        <img class="teacher-mini" src="assets/images/teachers/<?php echo e($svcTeacher['photo']); ?>" alt="">
                                                                    <?php elseif ($svcTeacher) :
                                                                        $tName = trim($svcTeacher['nameemployee'] . ' ' . $svcTeacher['surnameemployee']); ?>
                                                                        <span class="teacher-mini" style="background:<?php echo teacherColor($tName); ?>;"><?php echo e(teacherInitials($svcTeacher['nameemployee'], $svcTeacher['surnameemployee'])); ?></span>
                                                                    <?php else : ?>
                                                                        <span class="teacher-mini none"><i class="fas fa-user"></i></span>
                                                                    <?php endif; ?>
                                                                    <select name="idteacher" class="form-select teacher-select <?php echo $svcTeacher ? '' : 'unassigned'; ?>"
                                                                        data-current="<?php echo $svcTeacherId; ?>"
                                                                        data-classname="<?php echo e($svc['servicename'] . ' ' . $svc['day'] . ' ' . $svc['time']); ?>">
                                                                        <?php echo teacherOptions($teachers, $svcTeacherId); ?>
                                                                    </select>
                                                                </form>
                                                            </td>
                                                            <td class="text-end action-btns">
                                                                <button type="button" class="btn btn-primary btn-sm toggle-form">Propaga</button>
                                                                <a href="associate-services.php?id=<?php echo (int) $svc['idservice']; ?>">
                                                                    <button type="button" class="btn btn-info btn-sm">Associa</button>
                                                                </a>
                                                                <a href="updateservice.php?idservice=<?php echo (int) $svc['idservice']; ?>" class="btn btn-warning btn-sm">
                                                                    <i class="mdi mdi-lead-pencil font-size-16 align-middle"></i>
                                                                </a>
                                                                <a href="cancelservice.php?idservice=<?php echo (int) $svc['idservice']; ?>"
                                                                    class="btn btn-danger btn-sm"
                                                                    title="Elimina classe"
                                                                    onclick="return confirm(<?php echo e(json_encode('Eliminare la classe ' . $svc['servicename'] . ' (' . $svc['day'] . ' ' . $svc['time'] . ')? L\'operazione non si può annullare.')); ?>);">
                                                                    <i class="bx bx-block font-size-16 align-middle"></i>
                                                                </a>
                                                            </td>
                                                        </tr>
                                                        <tr class="expanded-row">
                                                            <td colspan="7">
                                                                <div class="expanded-content">
                                                                    <form class="calendar-form" method="post" action="nextdateclass.php">
                                                                        <div class="row">
                                                                            <div class="col-md-6">
                                                                                <div class="mb-3">
                                                                                    <label class="form-label">Data inizio</label>
                                                                                    <input type="text" class="datepicker form-control" name="propagatestartdate" required>
                                                                                </div>
                                                                            </div>
                                                                            <div class="col-md-6">
                                                                                <div class="mb-3">
                                                                                    <label class="form-label">Data fine</label>
                                                                                    <input type="text" class="datepicker form-control" name="propagateenddate" required>
                                                                                </div>
                                                                            </div>
                                                                        </div>
                                                                        <input type="hidden" name="idservice" value="<?php echo (int) $svc['idservice']; ?>">
                                                                        <input type="hidden" name="timeclass" value="<?php echo e($svc['time']); ?>">
                                                                        <input type="hidden" name="dayclass" value="<?php echo e($svc['day']); ?>">
                                                                        <input type="hidden" name="durationtime" value="<?php echo e($svc['classduration']); ?>">
                                                                        <button type="submit" class="btn btn-primary btn-save">Propaga sul calendario</button>
                                                                    </form>

                                                                    <?php $props = $propagationsByService[$svc['idservice']] ?? []; ?>
                                                                    <?php if (!empty($props)) : ?>
                                                                        <hr>
                                                                        <div class="section-title" style="font-size:13px;">Propagazioni effettuate</div>
                                                                        <table class="table table-sm mt-2 mb-0">
                                                                            <thead>
                                                                                <tr>
                                                                                    <th>Inizio</th>
                                                                                    <th>Fine</th>
                                                                                    <th>Lezioni</th>
                                                                                    <th>Token</th>
                                                                                    <th class="text-end">Azioni</th>
                                                                                </tr>
                                                                            </thead>
                                                                            <tbody>
                                                                                <?php foreach ($props as $p) : ?>
                                                                                    <tr>
                                                                                        <td><?php echo e($p['startdate']); ?></td>
                                                                                        <td><?php echo e($p['enddate']); ?></td>
                                                                                        <td><?php echo e($p['occorrenze']); ?></td>
                                                                                        <td><code style="font-size:11px;"><?php echo e(substr((string)$p['token'], 0, 10)); ?>…</code></td>
                                                                                        <td class="text-end">
                                                                                            <a href="cancelpropagation.php?token=<?php echo e($p['token']); ?>"
                                                                                                class="btn btn-danger btn-sm"
                                                                                                onclick="return confirm('Eliminare questa propagazione e tutte le sue lezioni?');">
                                                                                                Elimina
                                                                                            </a>
                                                                                        </td>
                                                                                    </tr>
                                                                                <?php endforeach; ?>
                                                                            </tbody>
                                                                        </table>
                                                                    <?php endif; ?>
                                                                </div>
                                                            </td>
                                                        </tr>
                                                    <?php endforeach; ?>
                                                <?php endif; ?>
                                            </tbody>
                                        </table>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

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

    <script src="assets/libs/bootstrap/js/bootstrap.bundle.min.js"></script>
    <script src="assets/libs/metismenujs/metismenujs.min.js"></script>
    <script src="assets/libs/simplebar/simplebar.min.js"></script>
    <script src="assets/libs/eva-icons/eva.min.js"></script>
    <script src="assets/js/app.js"></script>

    <script>
        $(document).ready(function() {
            // Datepicker sui campi di propagazione
            $(".datepicker").datepicker({
                dateFormat: "yy-mm-dd"
            });

            // Color picker spectrum collegato al VERO campo colorclass (ora viene salvato)
            $('#colorclass').spectrum({
                preferredFormat: 'hex',
                showInput: true,
                showPalette: true,
                palette: [
                    ["#FF0000", "#00FF00", "#0000FF"],
                    ["#1ebf73", "#f39c12", "#8e44ad"]
                ]
            });

            // Forza il valore del colore nel campo prima dell'invio del form
            $('#insertclass').on('submit', function() {
                var col = $('#colorclass').spectrum('get');
                if (col) {
                    $('#colorclass').val(col.toHexString());
                }
            });

            // Cambio insegnante dalla tabella: conferma e salva
            $('.teacher-select').on('change', function() {
                var sel = $(this);
                var teacherName = sel.find('option:selected').text();
                if (confirm('Assegnare ' + teacherName + ' alla classe ' + sel.data('classname') + '?')) {
                    sel.closest('form')[0].submit();
                } else {
                    sel.val(String(sel.data('current')) === '0' ? '' : String(sel.data('current')));
                }
            });
        });

        // Espansione riga propagazione
        document.addEventListener("DOMContentLoaded", function() {
            document.querySelectorAll(".toggle-form").forEach(function(button) {
                button.addEventListener("click", function() {
                    var row = this.closest("tr");
                    var expandedRow = row.nextElementSibling;
                    if (expandedRow && expandedRow.classList.contains("expanded-row")) {
                        expandedRow.classList.toggle("expanded");
                    }
                });
            });
        });
    </script>
</body>

</html>