<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);

include('include/headscript.php');

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

function jsonResponse(array $data): void
{
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode($data);
    exit;
}

function normalizeNullableInt($value): ?int
{
    return (isset($value) && $value !== '') ? (int)$value : null;
}

function normalizeBoolValue($value): int
{
    return ((string)$value === '0') ? 0 : 1;
}

function cleanString(?string $value): string
{
    return trim((string)$value);
}

/* ==========================================
   AJAX HANDLERS
   ========================================== */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['ajax']) && $_POST['ajax'] == '1') {
    $action = $_POST['action'] ?? '';

    try {
        if ($action === 'add') {
            $functionName   = cleanString($_POST['function_name'] ?? '');
            $personFullName = cleanString($_POST['person_full_name'] ?? '');
            $phone          = cleanString($_POST['phone'] ?? '');
            $email          = cleanString($_POST['email'] ?? '');
            $notes          = cleanString($_POST['notes'] ?? '');
            $sortOrder      = normalizeNullableInt($_POST['sort_order'] ?? '0') ?? 0;
            $isActive       = normalizeBoolValue($_POST['is_active'] ?? '1');

            if ($functionName === '') {
                jsonResponse(['success' => false, 'message' => 'Il nome funzione è obbligatorio.']);
            }

            if ($email !== '' && !filter_var($email, FILTER_VALIDATE_EMAIL)) {
                jsonResponse(['success' => false, 'message' => 'Email non valida.']);
            }

            $stmt = $pdo->prepare("\n                INSERT INTO company_functions\n                    (function_name, person_full_name, phone, email, notes, sort_order, is_active, created_at, updated_at)\n                VALUES\n                    (:function_name, :person_full_name, :phone, :email, :notes, :sort_order, :is_active, NOW(), NOW())\n            ");

            $stmt->execute([
                'function_name'    => $functionName,
                'person_full_name' => $personFullName !== '' ? $personFullName : '',
                'phone'            => $phone !== '' ? $phone : null,
                'email'            => $email !== '' ? $email : null,
                'notes'            => $notes !== '' ? $notes : null,
                'sort_order'       => $sortOrder,
                'is_active'        => $isActive,
            ]);

            jsonResponse(['success' => true, 'message' => 'Funzione salvata correttamente.']);
        }

        if ($action === 'edit') {
            $id             = (int)($_POST['id'] ?? 0);
            $functionName   = cleanString($_POST['function_name'] ?? '');
            $personFullName = cleanString($_POST['person_full_name'] ?? '');
            $phone          = cleanString($_POST['phone'] ?? '');
            $email          = cleanString($_POST['email'] ?? '');
            $notes          = cleanString($_POST['notes'] ?? '');
            $sortOrder      = normalizeNullableInt($_POST['sort_order'] ?? '0') ?? 0;
            $isActive       = normalizeBoolValue($_POST['is_active'] ?? '1');

            if ($id <= 0) {
                jsonResponse(['success' => false, 'message' => 'ID funzione non valido.']);
            }

            if ($functionName === '') {
                jsonResponse(['success' => false, 'message' => 'Il nome funzione è obbligatorio.']);
            }

            if ($email !== '' && !filter_var($email, FILTER_VALIDATE_EMAIL)) {
                jsonResponse(['success' => false, 'message' => 'Email non valida.']);
            }

            $stmt = $pdo->prepare("\n                UPDATE company_functions\n                SET function_name    = :function_name,\n                    person_full_name = :person_full_name,\n                    phone            = :phone,\n                    email            = :email,\n                    notes            = :notes,\n                    sort_order       = :sort_order,\n                    is_active        = :is_active,\n                    updated_at       = NOW()\n                WHERE id = :id\n            ");

            $stmt->execute([
                'function_name'    => $functionName,
                'person_full_name' => $personFullName !== '' ? $personFullName : '',
                'phone'            => $phone !== '' ? $phone : null,
                'email'            => $email !== '' ? $email : null,
                'notes'            => $notes !== '' ? $notes : null,
                'sort_order'       => $sortOrder,
                'is_active'        => $isActive,
                'id'               => $id,
            ]);

            jsonResponse(['success' => true, 'message' => 'Funzione aggiornata correttamente.']);
        }

        if ($action === 'delete') {
            $id = (int)($_POST['id'] ?? 0);

            if ($id <= 0) {
                jsonResponse(['success' => false, 'message' => 'ID funzione non valido.']);
            }

            $stmt = $pdo->prepare("DELETE FROM company_functions WHERE id = :id");
            $stmt->execute(['id' => $id]);

            jsonResponse(['success' => true, 'message' => 'Funzione cancellata correttamente.']);
        }

        jsonResponse(['success' => false, 'message' => 'Azione non riconosciuta.']);
    } catch (Exception $e) {
        jsonResponse(['success' => false, 'message' => $e->getMessage()]);
    }
}

/* ==========================================
   PAGE DATA
   ========================================== */
$stmtFunctions = $pdo->query("\n    SELECT id, function_name, person_full_name, phone, email, notes, sort_order, is_active, created_at, updated_at\n    FROM company_functions\n    ORDER BY is_active DESC, sort_order ASC, function_name ASC, person_full_name ASC\n");
$functions = $stmtFunctions->fetchAll(PDO::FETCH_ASSOC);
?>

<!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>Funzioni Aziendali - <?= 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 rel="stylesheet" href="https://cdn.datatables.net/1.13.6/css/dataTables.bootstrap5.min.css">
    <script src="https://cdn.datatables.net/1.13.6/js/jquery.dataTables.min.js"></script>
    <script src="https://cdn.datatables.net/1.13.6/js/dataTables.bootstrap5.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;
            font-size: 1rem;
            padding: 10px 18px;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
            transition: all 0.2s ease-in-out;
        }

        .back-dashboard:hover {
            background-color: #b9d3ff !important;
            transform: translateY(-2px);
        }

        .btn-main-action,
        .btn-add {
            background-color: #0d6efd;
            color: #fff;
            border-radius: 8px;
            padding: 10px 20px;
            font-weight: 500;
            transition: all 0.2s ease-in-out;
        }

        .btn-main-action:hover,
        .btn-add:hover {
            background-color: #0b5ed7;
            color: #fff;
            transform: scale(1.02);
        }

        .table thead {
            background-color: #cfe3ff;
            color: #1f2d3d;
        }

        #tabCompanyFunctions thead th {
            text-align: center;
            vertical-align: middle;
        }

        .modal-content {
            border-radius: 16px;
        }

        .function-name {
            font-weight: 700;
            color: #1f2937;
        }

        .person-name {
            font-weight: 600;
            color: #334155;
        }

        .contact-line {
            display: block;
            font-size: 0.9rem;
            text-decoration: none;
        }

        .notes-small {
            color: #64748b;
            font-size: 0.9rem;
            max-width: 420px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .badge-status {
            padding: 0.25rem 0.65rem;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 700;
        }

        .badge-status.active {
            background-color: #d1fae5;
            color: #065f46;
        }

        .badge-status.inactive {
            background-color: #e5e7eb;
            color: #374151;
        }

        .empty-text {
            color: #94a3b8;
            font-style: italic;
        }

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

            .back-dashboard,
            .btn-main-action {
                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">Funzioni Aziendali</h5>
                        <button type="button" class="btn back-dashboard" onclick="location.href='production_dashboard.php'">
                            ↩️ Torna alla Dashboard
                        </button>
                    </div>

                    <div class="card-body">
                        <div class="d-flex justify-content-between align-items-center mb-3 flex-wrap gap-2">
                            <div>
                                <h6 class="fw-semibold mb-1">Elenco Funzioni</h6>
                                <div class="text-muted small">Gestione di RSPP, medico del lavoro, RLS e altre funzioni aziendali.</div>
                            </div>
                            <button class="btn btn-main-action" data-bs-toggle="modal" data-bs-target="#companyFunctionModal" onclick="openCompanyFunctionModal()">
                                ➕ Aggiungi Funzione
                            </button>
                        </div>

                        <div class="table-responsive">
                            <table id="tabCompanyFunctions" class="table table-striped align-middle text-center" style="width:100%;">
                                <thead>
                                    <tr>
                                        <th>Funzione</th>
                                        <th>Nominativo</th>
                                        <th>Contatti</th>
                                        <th>Note</th>
                                        <th>Ordine</th>
                                        <th>Stato</th>
                                        <th>Azioni</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    <?php foreach ($functions as $row): ?>
                                        <?php
                                        $id = (int)$row['id'];
                                        $functionName = (string)($row['function_name'] ?? '');
                                        $personFullName = (string)($row['person_full_name'] ?? '');
                                        $phone = (string)($row['phone'] ?? '');
                                        $email = (string)($row['email'] ?? '');
                                        $notes = (string)($row['notes'] ?? '');
                                        $sortOrder = (int)($row['sort_order'] ?? 0);
                                        $isActive = (int)($row['is_active'] ?? 1);
                                        ?>
                                        <tr>
                                            <td class="text-start">
                                                <div class="function-name"><?= htmlspecialchars($functionName, ENT_QUOTES, 'UTF-8') ?></div>
                                            </td>
                                            <td class="text-start">
                                                <?php if ($personFullName !== ''): ?>
                                                    <div class="person-name"><?= htmlspecialchars($personFullName, ENT_QUOTES, 'UTF-8') ?></div>
                                                <?php else: ?>
                                                    <span class="empty-text">Da definire</span>
                                                <?php endif; ?>
                                            </td>
                                            <td class="text-start">
                                                <?php if ($phone !== ''): ?>
                                                    <a class="contact-line" href="tel:<?= htmlspecialchars($phone, ENT_QUOTES, 'UTF-8') ?>">
                                                        📞 <?= htmlspecialchars($phone, ENT_QUOTES, 'UTF-8') ?>
                                                    </a>
                                                <?php endif; ?>

                                                <?php if ($email !== ''): ?>
                                                    <a class="contact-line" href="mailto:<?= htmlspecialchars($email, ENT_QUOTES, 'UTF-8') ?>">
                                                        ✉️ <?= htmlspecialchars($email, ENT_QUOTES, 'UTF-8') ?>
                                                    </a>
                                                <?php endif; ?>

                                                <?php if ($phone === '' && $email === ''): ?>
                                                    <span class="empty-text">Nessun contatto</span>
                                                <?php endif; ?>
                                            </td>
                                            <td class="text-start">
                                                <?php if ($notes !== ''): ?>
                                                    <div class="notes-small" title="<?= htmlspecialchars($notes, ENT_QUOTES, 'UTF-8') ?>">
                                                        <?= htmlspecialchars($notes, ENT_QUOTES, 'UTF-8') ?>
                                                    </div>
                                                <?php else: ?>
                                                    <span class="empty-text">—</span>
                                                <?php endif; ?>
                                            </td>
                                            <td><?= $sortOrder ?></td>
                                            <td>
                                                <?php if ($isActive === 1): ?>
                                                    <span class="badge-status active">Attiva</span>
                                                <?php else: ?>
                                                    <span class="badge-status inactive">Non attiva</span>
                                                <?php endif; ?>
                                            </td>
                                            <td>
                                                <button
                                                    type="button"
                                                    class="btn btn-sm btn-outline-secondary edit-function mb-1"
                                                    data-id="<?= $id ?>"
                                                    data-function_name="<?= htmlspecialchars($functionName, ENT_QUOTES, 'UTF-8') ?>"
                                                    data-person_full_name="<?= htmlspecialchars($personFullName, ENT_QUOTES, 'UTF-8') ?>"
                                                    data-phone="<?= htmlspecialchars($phone, ENT_QUOTES, 'UTF-8') ?>"
                                                    data-email="<?= htmlspecialchars($email, ENT_QUOTES, 'UTF-8') ?>"
                                                    data-notes="<?= htmlspecialchars($notes, ENT_QUOTES, 'UTF-8') ?>"
                                                    data-sort_order="<?= $sortOrder ?>"
                                                    data-is_active="<?= $isActive ?>">
                                                    ✏️ Modifica
                                                </button>

                                                <button
                                                    type="button"
                                                    class="btn btn-sm btn-outline-danger delete-function mb-1"
                                                    data-id="<?= $id ?>"
                                                    data-name="<?= htmlspecialchars($functionName, ENT_QUOTES, 'UTF-8') ?>">
                                                    🗑️ Cancella
                                                </button>
                                            </td>
                                        </tr>
                                    <?php endforeach; ?>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>
        </div>

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

    <!-- MODALE ADD / EDIT FUNZIONE -->
    <div class="modal fade" id="companyFunctionModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-dialog-centered modal-dialog-scrollable">
            <div class="modal-content">
                <div class="modal-header" style="background-color:#cfe3ff;">
                    <h5 class="modal-title" id="companyFunctionModalTitle">Aggiungi Funzione</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                </div>

                <div class="modal-body">
                    <form id="companyFunctionForm">
                        <input type="hidden" id="functionId">

                        <div class="mb-3">
                            <label class="form-label fw-semibold">Nome funzione <span class="text-danger">*</span></label>
                            <input type="text" class="form-control" id="functionName" placeholder="Es. RSPP, Medico del lavoro, RLS" required>
                        </div>

                        <div class="mb-3">
                            <label class="form-label fw-semibold">Nome e Cognome persona</label>
                            <input type="text" class="form-control" id="personFullName" placeholder="Es. Mario Rossi">
                        </div>

                        <div class="row">
                            <div class="col-12 col-md-6 mb-3">
                                <label class="form-label fw-semibold">Telefono</label>
                                <input type="text" class="form-control" id="phone" placeholder="Es. +39 333 1234567">
                            </div>

                            <div class="col-12 col-md-6 mb-3">
                                <label class="form-label fw-semibold">Email</label>
                                <input type="email" class="form-control" id="email" placeholder="nome@azienda.it">
                            </div>
                        </div>

                        <div class="row">
                            <div class="col-12 col-md-6 mb-3">
                                <label class="form-label fw-semibold">Ordine</label>
                                <input type="number" class="form-control" id="sortOrder" value="0" min="0" step="1">
                                <small class="text-muted">Serve solo per ordinare la visualizzazione.</small>
                            </div>

                            <div class="col-12 col-md-6 mb-3">
                                <label class="form-label fw-semibold">Stato</label>
                                <select class="form-select" id="isActive">
                                    <option value="1">Attiva</option>
                                    <option value="0">Non attiva</option>
                                </select>
                            </div>
                        </div>

                        <div class="mb-3">
                            <label class="form-label fw-semibold">Note</label>
                            <textarea class="form-control" id="notes" rows="3" placeholder="Note interne, riferimenti, disponibilità, ecc."></textarea>
                        </div>

                        <div class="text-center">
                            <button type="submit" class="btn btn-add">💾 Salva</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>

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

    <script>
        function escapeHtml(value) {
            return $('<div>').text(value || '').html();
        }

        function openCompanyFunctionModal() {
            $('#functionId').val('');
            $('#functionName').val('');
            $('#personFullName').val('');
            $('#phone').val('');
            $('#email').val('');
            $('#notes').val('');
            $('#sortOrder').val('0');
            $('#isActive').val('1');
            $('#companyFunctionModalTitle').text('Aggiungi Funzione');
        }

        $(document).ready(function() {
            $('#tabCompanyFunctions').DataTable({
                order: [
                    [5, 'asc'],
                    [4, 'asc'],
                    [0, 'asc']
                ],
                pageLength: 25,
                language: {
                    url: 'https://cdn.datatables.net/plug-ins/1.13.6/i18n/it-IT.json',
                    emptyTable: 'Nessuna funzione presente'
                },
                columnDefs: [{
                    targets: -1,
                    orderable: false,
                    searchable: false
                }]
            });

            $(document).on('click', '.edit-function', function() {
                const btn = $(this);

                $('#functionId').val(btn.data('id'));
                $('#functionName').val(btn.data('function_name'));
                $('#personFullName').val(btn.data('person_full_name'));
                $('#phone').val(btn.data('phone'));
                $('#email').val(btn.data('email'));
                $('#notes').val(btn.data('notes'));
                $('#sortOrder').val(btn.data('sort_order'));
                $('#isActive').val(String(btn.data('is_active')));
                $('#companyFunctionModalTitle').text('Modifica Funzione');

                $('#companyFunctionModal').modal('show');
            });

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

                const id = $('#functionId').val();
                const payload = new URLSearchParams();
                payload.append('ajax', '1');
                payload.append('action', id ? 'edit' : 'add');
                payload.append('id', id);
                payload.append('function_name', $('#functionName').val().trim());
                payload.append('person_full_name', $('#personFullName').val().trim());
                payload.append('phone', $('#phone').val().trim());
                payload.append('email', $('#email').val().trim());
                payload.append('notes', $('#notes').val().trim());
                payload.append('sort_order', $('#sortOrder').val() || '0');
                payload.append('is_active', $('#isActive').val());

                fetch('', {
                        method: 'POST',
                        headers: {
                            'Content-Type': 'application/x-www-form-urlencoded'
                        },
                        body: payload.toString()
                    })
                    .then(r => r.json())
                    .then(data => {
                        if (data.success) {
                            Swal.fire({
                                icon: 'success',
                                title: 'Salvato!',
                                text: data.message || 'Operazione completata.',
                                confirmButtonColor: '#3085d6'
                            }).then(() => location.reload());
                        } else {
                            Swal.fire('Errore', data.message || 'Impossibile salvare.', 'error');
                        }
                    })
                    .catch(err => {
                        console.error(err);
                        Swal.fire('Errore', 'Errore di comunicazione.', 'error');
                    });
            });

            $(document).on('click', '.delete-function', function() {
                const id = $(this).data('id');
                const name = $(this).data('name');

                Swal.fire({
                    title: 'Confermi la cancellazione?',
                    text: name ? ('Funzione: ' + name) : 'La funzione verrà cancellata.',
                    icon: 'warning',
                    showCancelButton: true,
                    confirmButtonColor: '#d33',
                    cancelButtonColor: '#6c757d',
                    confirmButtonText: 'Sì, cancella',
                    cancelButtonText: 'Annulla'
                }).then((result) => {
                    if (!result.isConfirmed) return;

                    const payload = new URLSearchParams();
                    payload.append('ajax', '1');
                    payload.append('action', 'delete');
                    payload.append('id', id);

                    fetch('', {
                            method: 'POST',
                            headers: {
                                'Content-Type': 'application/x-www-form-urlencoded'
                            },
                            body: payload.toString()
                        })
                        .then(r => r.json())
                        .then(data => {
                            if (data.success) {
                                Swal.fire({
                                    icon: 'success',
                                    title: 'Cancellato!',
                                    text: data.message || 'Funzione cancellata.',
                                    confirmButtonColor: '#3085d6'
                                }).then(() => location.reload());
                            } else {
                                Swal.fire('Errore', data.message || 'Impossibile cancellare.', 'error');
                            }
                        })
                        .catch(err => {
                            console.error(err);
                            Swal.fire('Errore', 'Errore di comunicazione.', 'error');
                        });
                });
            });
        });
    </script>
</body>

</html>