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

if (session_status() === PHP_SESSION_NONE) {
    session_start();
}

if (!$user->hasRole('Admin') && !$user->hasRole('SuperUser')) {
    header('Location: import_dashboard.php');
    exit;
}

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

/*
 * Nome file del motore generico condiviso da tutte le routine engine.
 * Deve corrispondere al file presente in routines/.
 */
$engineFilename = '_engine.php';

/*
 * CSRF token.
 */
if (empty($_SESSION['routine_admin_csrf'])) {
    $_SESSION['routine_admin_csrf'] = bin2hex(random_bytes(32));
}
$csrfToken = $_SESSION['routine_admin_csrf'];

function cleanInput($value)
{
    return trim((string)($value ?? ''));
}

function redirectWithMessage($type, $message)
{
    $_SESSION['routine_admin_flash'] = [
        'type' => $type,
        'message' => $message
    ];
    header('Location: ' . $_SERVER['PHP_SELF']);
    exit;
}

/*
 * Gestione azioni POST.
 */
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    try {
        $postedToken = $_POST['csrf_token'] ?? '';
        if (!hash_equals($csrfToken, $postedToken)) {
            throw new Exception('Token di sicurezza non valido.');
        }

        $action = cleanInput($_POST['action'] ?? '');

        if ($action === 'create' || $action === 'update') {
            $name        = cleanInput($_POST['name'] ?? '');
            $description = cleanInput($_POST['description'] ?? '');
            $engine      = (int)($_POST['engine'] ?? 0) === 1 ? 1 : 0;
            $headerrow   = (int)($_POST['headerrow'] ?? 1);
            $filename    = cleanInput($_POST['filename'] ?? '');

            if ($name === '') {
                throw new Exception('Il nome della routine è obbligatorio.');
            }
            if ($headerrow < 1) {
                $headerrow = 1;
            }

            /*
             * Se è una routine a motore, il filename è forzato al file del motore.
             * Se è legacy, serve un filename di file reale.
             */
            if ($engine === 1) {
                $filename = $GLOBALS['engineFilename'];
            } else {
                if ($filename === '') {
                    throw new Exception('Per una routine di tipo File indica il nome del file (es. fendi.php).');
                }
            }

            if ($action === 'create') {
                // instruction è NOT NULL nello schema: valorizziamo sempre.
                $instruction = $engine === 1
                    ? 'Routine gestita dal motore generico (routine_step).'
                    : ('Routine su file: ' . $filename);

                $stmt = $pdo->prepare("
                    INSERT INTO routine (name, description, instruction, filename, engine, headerrow)
                    VALUES (:name, :descr, :instr, :fn, :engine, :hr)
                ");
                $stmt->execute([
                    ':name'   => $name,
                    ':descr'  => ($description !== '' ? $description : null),
                    ':instr'  => $instruction,
                    ':fn'     => $filename,
                    ':engine' => $engine,
                    ':hr'     => $headerrow,
                ]);

                redirectWithMessage('success', 'Routine creata correttamente.');
            } else {
                $idroutine = (int)($_POST['idroutine'] ?? 0);
                if ($idroutine <= 0) {
                    throw new Exception('ID routine non valido.');
                }

                $stmt = $pdo->prepare("
                    UPDATE routine
                       SET name = :name,
                           description = :descr,
                           filename = :fn,
                           engine = :engine,
                           headerrow = :hr
                     WHERE idroutine = :id
                ");
                $stmt->execute([
                    ':name'   => $name,
                    ':descr'  => ($description !== '' ? $description : null),
                    ':fn'     => $filename,
                    ':engine' => $engine,
                    ':hr'     => $headerrow,
                    ':id'     => $idroutine,
                ]);

                redirectWithMessage('success', 'Routine aggiornata correttamente.');
            }
        }

        if ($action === 'delete') {
            $idroutine = (int)($_POST['idroutine'] ?? 0);
            if ($idroutine <= 0) {
                throw new Exception('ID routine non valido.');
            }

            // Rimuove prima gli eventuali step collegati, poi la routine.
            $stmt = $pdo->prepare("DELETE FROM routine_step WHERE idroutine = :id");
            $stmt->execute([':id' => $idroutine]);

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

            redirectWithMessage('success', 'Routine eliminata correttamente.');
        }

        throw new Exception('Azione non valida.');
    } catch (Exception $e) {
        redirectWithMessage('error', $e->getMessage());
    }
}

/*
 * Caricamento routine + conteggio step.
 */
$stmt = $pdo->query("
    SELECT
        r.idroutine,
        r.name,
        r.description,
        r.filename,
        r.engine,
        r.headerrow,
        (SELECT COUNT(*) FROM routine_step s WHERE s.idroutine = r.idroutine) AS step_count
    FROM routine r
    ORDER BY r.name ASC
");
$routines = $stmt->fetchAll(PDO::FETCH_ASSOC);

$flash = $_SESSION['routine_admin_flash'] ?? null;
unset($_SESSION['routine_admin_flash']);
?>
<!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>Gestione Routine - <?= htmlspecialchars($titlewebsite, ENT_QUOTES, 'UTF-8'); ?></title>

    <style>
        .small-muted {
            font-size: 12px;
            color: #6c757d;
        }

        /* La tabella non deve sforare la pagina */
        #routinesTable {
            table-layout: fixed;
            width: 100%;
        }

        #routinesTable td,
        #routinesTable th {
            overflow-wrap: break-word;
            word-break: break-word;
            white-space: normal;
            vertical-align: middle;
        }

        /* Colonna descrizione: va a capo invece di allargare la tabella */
        #routinesTable td.desc-cell {
            white-space: normal;
            overflow-wrap: break-word;
            word-break: break-word;
            max-width: 320px;
        }

        /* Le azioni restano su una riga */
        #routinesTable td.table-actions {
            white-space: nowrap;
        }

        .badge-engine {
            background: #6f42c1;
            color: #fff;
        }

        .badge-file {
            background: #6c757d;
            color: #fff;
        }

        .table-actions {
            white-space: nowrap;
        }

        .filename-chip {
            font-family: Consolas, Monaco, monospace;
            font-size: 12px;
            background: #f1f5f9;
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            padding: 2px 8px;
            color: #334155;
        }

        .step-count-pill {
            display: inline-block;
            min-width: 26px;
            text-align: center;
            font-weight: 600;
            border-radius: 999px;
            padding: 2px 10px;
            background: #eef2ff;
            color: #4338ca;
            border: 1px solid #e0e7ff;
        }
    </style>
</head>

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

        <div class="page-wrapper">
            <div class="page-content">
                <?php include('top_stat_widget.php'); ?>

                <div class="card radius-10">
                    <div class="card-header">
                        <div class="d-flex align-items-center justify-content-between">
                            <div>
                                <h6 class="mb-0">Gestione Routine</h6>
                                <small class="text-muted">Crea e configura le routine di importazione. Le routine di tipo Motore sono configurabili a step senza codice.</small>
                            </div>
                            <button type="button" class="btn btn-primary" id="btnAddRoutine">
                                <i class="bx bx-plus"></i> Nuova Routine
                            </button>
                        </div>
                    </div>

                    <div class="card-body">
                        <div class="table-responsive">
                            <table id="routinesTable" class="table table-striped table-bordered align-middle">
                                <thead>
                                    <tr>
                                        <th>Nome</th>
                                        <th>Descrizione</th>
                                        <th style="width: 120px;">Tipo</th>
                                        <th style="width: 160px;">File</th>
                                        <th style="width: 90px;">Header row</th>
                                        <th style="width: 80px;">Step</th>
                                        <th style="width: 130px;">Azioni</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    <?php foreach ($routines as $row): ?>
                                        <?php $isEngine = ((int)$row['engine'] === 1); ?>
                                        <tr>
                                            <td><?= htmlspecialchars($row['name'] ?? '', ENT_QUOTES, 'UTF-8'); ?></td>
                                            <td class="small-muted desc-cell"><?= htmlspecialchars($row['description'] ?? '', ENT_QUOTES, 'UTF-8'); ?></td>
                                            <td>
                                                <?php if ($isEngine): ?>
                                                    <span class="badge badge-engine">Motore</span>
                                                <?php else: ?>
                                                    <span class="badge badge-file">File</span>
                                                <?php endif; ?>
                                            </td>
                                            <td><span class="filename-chip"><?= htmlspecialchars($row['filename'] ?? '', ENT_QUOTES, 'UTF-8'); ?></span></td>
                                            <td class="text-center"><?= (int)$row['headerrow']; ?></td>
                                            <td class="text-center">
                                                <?php if ($isEngine): ?>
                                                    <span class="step-count-pill"><?= (int)$row['step_count']; ?></span>
                                                <?php else: ?>
                                                    <span class="small-muted">—</span>
                                                <?php endif; ?>
                                            </td>
                                            <td class="table-actions">
                                                <?php if ($isEngine): ?>
                                                    <a class="btn btn-sm btn-outline-success"
                                                        href="routine_steps.php?idroutine=<?= (int)$row['idroutine']; ?>"
                                                        title="Gestisci step" data-bs-toggle="tooltip">
                                                        <i class="bx bx-list-ul"></i>
                                                    </a>
                                                <?php endif; ?>

                                                <button
                                                    type="button"
                                                    class="btn btn-sm btn-outline-primary btnEditRoutine"
                                                    data-id="<?= (int)$row['idroutine']; ?>"
                                                    data-name="<?= htmlspecialchars($row['name'] ?? '', ENT_QUOTES, 'UTF-8'); ?>"
                                                    data-description="<?= htmlspecialchars($row['description'] ?? '', ENT_QUOTES, 'UTF-8'); ?>"
                                                    data-engine="<?= (int)$row['engine']; ?>"
                                                    data-filename="<?= htmlspecialchars($row['filename'] ?? '', ENT_QUOTES, 'UTF-8'); ?>"
                                                    data-headerrow="<?= (int)$row['headerrow']; ?>"
                                                    title="Modifica" data-bs-toggle="tooltip">
                                                    <i class="bx bx-edit"></i>
                                                </button>

                                                <button
                                                    type="button"
                                                    class="btn btn-sm btn-outline-danger btnDeleteRoutine"
                                                    data-id="<?= (int)$row['idroutine']; ?>"
                                                    data-name="<?= htmlspecialchars($row['name'] ?? '', ENT_QUOTES, 'UTF-8'); ?>"
                                                    title="Elimina" data-bs-toggle="tooltip">
                                                    <i class="bx bx-trash"></i>
                                                </button>
                                            </td>
                                        </tr>
                                    <?php endforeach; ?>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>

            </div>
        </div>

        <div class="overlay toggle-icon"></div>
        <a href="javaScript:;" class="back-to-top"><i class='bx bxs-up-arrow-alt'></i></a>
        <?php include('include/footer.php'); ?>
    </div>

    <!-- Modal Routine -->
    <div class="modal fade" id="routineModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-dialog-centered">
            <form method="POST" class="modal-content" id="routineForm">
                <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($csrfToken, ENT_QUOTES, 'UTF-8'); ?>">
                <input type="hidden" name="action" id="formAction" value="create">
                <input type="hidden" name="idroutine" id="idroutine" value="">

                <div class="modal-header">
                    <h5 class="modal-title" id="routineModalTitle">Nuova Routine</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
                </div>

                <div class="modal-body">
                    <div class="row g-3">
                        <div class="col-md-12">
                            <label for="name" class="form-label">Nome *</label>
                            <input type="text" class="form-control" id="name" name="name" required>
                        </div>

                        <div class="col-md-12">
                            <label for="description" class="form-label">Descrizione</label>
                            <input type="text" class="form-control" id="description" name="description" maxlength="150">
                        </div>

                        <div class="col-md-6">
                            <label for="engine" class="form-label">Tipo routine *</label>
                            <select class="form-select" id="engine" name="engine" required>
                                <option value="1">Motore (step configurabili)</option>
                                <option value="0">File (legacy)</option>
                            </select>
                            <div class="small-muted mt-1">
                                Motore: configurabile a step da questa interfaccia. File: logica in un file PHP dedicato.
                            </div>
                        </div>

                        <div class="col-md-6">
                            <label for="headerrow" class="form-label">Riga intestazione (header row) *</label>
                            <input type="number" class="form-control" id="headerrow" name="headerrow" min="1" value="1" required>
                        </div>

                        <div class="col-md-12" id="filenameWrapper">
                            <label for="filename" class="form-label">Nome file</label>
                            <input type="text" class="form-control" id="filename" name="filename" placeholder="es. fendi.php">
                            <div class="small-muted mt-1" id="filenameHelp">
                                Per le routine di tipo File indica il nome del file PHP presente nella cartella routines/.
                            </div>
                        </div>
                    </div>
                </div>

                <div class="modal-footer">
                    <button type="button" class="btn btn-light" data-bs-dismiss="modal">Annulla</button>
                    <button type="submit" class="btn btn-primary" id="saveRoutineButton">Salva Routine</button>
                </div>
            </form>
        </div>
    </div>

    <!-- Delete Form -->
    <form method="POST" id="deleteRoutineForm" style="display:none;">
        <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($csrfToken, ENT_QUOTES, 'UTF-8'); ?>">
        <input type="hidden" name="action" value="delete">
        <input type="hidden" name="idroutine" id="deleteIdRoutine" value="">
    </form>

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

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            const routineModal = new bootstrap.Modal(document.getElementById('routineModal'));

            const formAction = document.getElementById('formAction');
            const idroutine = document.getElementById('idroutine');
            const routineModalTitle = document.getElementById('routineModalTitle');
            const saveRoutineButton = document.getElementById('saveRoutineButton');

            const name = document.getElementById('name');
            const description = document.getElementById('description');
            const engine = document.getElementById('engine');
            const headerrow = document.getElementById('headerrow');
            const filename = document.getElementById('filename');
            const filenameWrapper = document.getElementById('filenameWrapper');
            const filenameHelp = document.getElementById('filenameHelp');

            const engineFilename = "<?= htmlspecialchars($engineFilename, ENT_QUOTES, 'UTF-8'); ?>";

            /*
             * Mostra/nasconde il campo filename in base al tipo di routine.
             * Motore -> filename forzato al file del motore e campo di sola lettura.
             */
            function applyEngineUi() {
                if (engine.value === '1') {
                    filename.value = engineFilename;
                    filename.readOnly = true;
                    filenameHelp.textContent = 'Le routine di tipo Motore usano automaticamente il file ' + engineFilename + '.';
                } else {
                    if (filename.value === engineFilename) {
                        filename.value = '';
                    }
                    filename.readOnly = false;
                    filenameHelp.textContent = 'Per le routine di tipo File indica il nome del file PHP presente nella cartella routines/.';
                }
            }

            engine.addEventListener('change', applyEngineUi);

            function resetModalForCreate() {
                formAction.value = 'create';
                idroutine.value = '';
                routineModalTitle.textContent = 'Nuova Routine';
                saveRoutineButton.textContent = 'Crea Routine';

                name.value = '';
                description.value = '';
                engine.value = '1';
                headerrow.value = '1';
                filename.value = '';
                applyEngineUi();
            }

            function setModalForEdit(button) {
                formAction.value = 'update';
                idroutine.value = button.dataset.id || '';
                routineModalTitle.textContent = 'Modifica Routine';
                saveRoutineButton.textContent = 'Aggiorna Routine';

                name.value = button.dataset.name || '';
                description.value = button.dataset.description || '';
                engine.value = button.dataset.engine === '1' ? '1' : '0';
                headerrow.value = button.dataset.headerrow || '1';
                filename.value = button.dataset.filename || '';
                applyEngineUi();
            }

            document.getElementById('btnAddRoutine').addEventListener('click', function() {
                resetModalForCreate();
                routineModal.show();
            });

            document.querySelectorAll('.btnEditRoutine').forEach(function(button) {
                button.addEventListener('click', function() {
                    setModalForEdit(button);
                    routineModal.show();
                });
            });

            document.querySelectorAll('.btnDeleteRoutine').forEach(function(button) {
                button.addEventListener('click', function() {
                    const id = button.dataset.id;
                    const nm = button.dataset.name || 'questa routine';

                    Swal.fire({
                        title: 'Eliminare la routine?',
                        text: 'Vuoi eliminare "' + nm + '"? Verranno rimossi anche gli step collegati. Operazione irreversibile.',
                        icon: 'warning',
                        showCancelButton: true,
                        confirmButtonText: 'Sì, elimina',
                        cancelButtonText: 'Annulla',
                        confirmButtonColor: '#d33'
                    }).then(function(result) {
                        if (result.isConfirmed) {
                            document.getElementById('deleteIdRoutine').value = id;
                            document.getElementById('deleteRoutineForm').submit();
                        }
                    });
                });
            });

            if (typeof $ !== 'undefined' && $.fn.DataTable) {
                $('#routinesTable').DataTable({
                    pageLength: 25,
                    order: [
                        [0, 'asc']
                    ]
                });
            }

            <?php if ($flash): ?>
                Swal.fire({
                    icon: '<?= htmlspecialchars($flash['type'], ENT_QUOTES, 'UTF-8'); ?>',
                    title: '<?= $flash['type'] === 'success' ? 'Fatto' : ($flash['type'] === 'warning' ? 'Attenzione' : 'Errore'); ?>',
                    text: '<?= htmlspecialchars($flash['message'], ENT_QUOTES, 'UTF-8'); ?>'
                });
            <?php endif; ?>
        });
    </script>
</body>

</html>