<?php
// Forza la visualizzazione degli errori (solo dev)
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

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

include('include/headscript.php');

// Connessione DB
$dbHandler = DBHandlerSelect::getInstance();
$pdo = $dbHandler->getConnection();

// Verifica utente loggato
if (!isset($iduserlogin)) {
    header("Location: login.php");
    exit;
}

// Controlla se esiste almeno un salone
$stmt = $pdo->prepare("SELECT COUNT(*) FROM shops WHERE owner_id = ?");
$stmt->execute([$iduserlogin]);
if ((int)$stmt->fetchColumn() === 0) {
    header("Location: onboarding_salon.php");
    exit;
}

// Prendi il primo salone (o quello attivo – puoi aggiungere switcher dopo)
$stmt = $pdo->prepare("
    SELECT id, name
    FROM shops
    WHERE owner_id = ?
    ORDER BY created_at ASC
    LIMIT 1
");
$stmt->execute([$iduserlogin]);
$shop = $stmt->fetch(PDO::FETCH_ASSOC);

if (!$shop) {
    die("Errore: salone non trovato.");
}

$shop_id   = (int)$shop['id'];
$shop_name = $shop['name'];

// =========================================================================
// Helpers
// =========================================================================
function isValidDateYmd(string $date): bool {
    $d = DateTime::createFromFormat('Y-m-d', $date);
    return $d && $d->format('Y-m-d') === $date;
}

function setFlash(string $type, string $text): void {
    $_SESSION['flash'] = ['type' => $type, 'text' => $text];
}

function getFlash(): ?array {
    if (!isset($_SESSION['flash'])) return null;
    $f = $_SESSION['flash'];
    unset($_SESSION['flash']);
    return $f;
}

// =========================================================================
// Gestione POST (add / edit / delete)
// =========================================================================
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action'])) {
    $action = $_POST['action'];

    try {
        if ($action === 'add') {
            $start_date  = trim($_POST['start_date'] ?? '');
            $end_date    = trim($_POST['end_date'] ?? '');
            $title       = trim($_POST['title'] ?? '');
            $description = trim($_POST['description'] ?? '');

            if ($start_date === '' || $end_date === '') {
                setFlash('danger', "Le date di inizio e fine sono obbligatorie.");
            } elseif (!isValidDateYmd($start_date) || !isValidDateYmd($end_date)) {
                setFlash('danger', "Formato data non valido.");
            } elseif (strtotime($end_date) < strtotime($start_date)) {
                setFlash('danger', "La data di fine non può essere precedente alla data di inizio.");
            } else {
                $pdo->beginTransaction();

                // Inserisco una riga per ogni giorno del range (B2)
                $stmt = $pdo->prepare("
                    INSERT INTO shop_day_off (shop_id, date, title, description, is_recurring)
                    VALUES (?, ?, ?, ?, 0)
                    ON DUPLICATE KEY UPDATE
                        title = VALUES(title),
                        description = VALUES(description),
                        updated_at = CURRENT_TIMESTAMP
                ");

                $start = new DateTime($start_date);
                $end   = new DateTime($end_date);
                $end->setTime(0,0,0);

                // +1 giorno per includere la fine
                $period = new DatePeriod($start, new DateInterval('P1D'), (clone $end)->modify('+1 day'));

                $inserted = 0;
                foreach ($period as $dt) {
                    $day = $dt->format('Y-m-d');
                    $ok = $stmt->execute([
                        $shop_id,
                        $day,
                        $title !== '' ? $title : 'Chiusura',
                        $description
                    ]);
                    if ($ok) $inserted++;
                }

                $pdo->commit();

                setFlash('success', "Chiusura aggiunta: salvati/aggiornati {$inserted} giorni.");
            }

            header("Location: day_off.php");
            exit;
        }

        if ($action === 'edit') {
            $id          = (int)($_POST['id'] ?? 0);
            $date        = trim($_POST['start_date'] ?? ''); // nel form edit usiamo start_date come "data singola"
            $title       = trim($_POST['title'] ?? '');
            $description = trim($_POST['description'] ?? '');

            if ($id <= 0) {
                setFlash('danger', "ID non valido.");
            } elseif ($date === '' || !isValidDateYmd($date)) {
                setFlash('danger', "La data è obbligatoria e deve essere valida.");
            } else {
                $stmt = $pdo->prepare("
                    UPDATE shop_day_off
                    SET date = ?, title = ?, description = ?, updated_at = NOW()
                    WHERE id = ? AND shop_id = ?
                ");
                $ok = $stmt->execute([
                    $date,
                    $title !== '' ? $title : 'Chiusura',
                    $description,
                    $id,
                    $shop_id
                ]);

                setFlash($ok ? 'success' : 'danger', $ok ? "Giorno di chiusura aggiornato!" : "Errore durante l'aggiornamento.");
            }

            header("Location: day_off.php");
            exit;
        }

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

            if ($id <= 0) {
                setFlash('danger', "ID non valido.");
            } else {
                $stmt = $pdo->prepare("DELETE FROM shop_day_off WHERE id = ? AND shop_id = ?");
                $ok = $stmt->execute([$id, $shop_id]);
                setFlash($ok ? 'success' : 'danger', $ok ? "Giorno di chiusura eliminato!" : "Errore durante l'eliminazione.");
            }

            header("Location: day_off.php");
            exit;
        }

        // action sconosciuta
        setFlash('danger', "Azione non valida.");
        header("Location: day_off.php");
        exit;

    } catch (Throwable $e) {
        if ($pdo->inTransaction()) $pdo->rollBack();
        setFlash('danger', "Errore: " . $e->getMessage());
        header("Location: day_off.php");
        exit;
    }
}

// =========================================================================
// Recupera tutti i giorni di chiusura
// =========================================================================
$stmt = $pdo->prepare("
    SELECT id, date, title, description, is_recurring
    FROM shop_day_off
    WHERE shop_id = ?
    ORDER BY date ASC
");
$stmt->execute([$shop_id]);
$days_off = $stmt->fetchAll(PDO::FETCH_ASSOC);

$flash = getFlash();
?>

<!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'); ?>
    <?php include('siteinfo.php'); ?>
    <title>Giorni di Chiusura - <?= htmlspecialchars($shop_name) ?></title>
</head>

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

    <div class="page-wrapper">
        <div class="page-content">
            <div class="card radius-10">
                <div class="card-header bg-light d-flex align-items-center justify-content-between">
                    <h6 class="mb-0">Giorni di Chiusura - <?= htmlspecialchars($shop_name) ?></h6>
                    <div>
                        <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addDayOffModal">
                            <i class="bx bx-plus me-1"></i> Aggiungi Chiusura
                        </button>
                        <a href="salon_dashboard.php" class="btn btn-outline-secondary ms-2">
                            <i class="bx bx-arrow-back me-1"></i> Dashboard
                        </a>
                    </div>
                </div>

                <div class="card-body">
                    <?php if ($flash): ?>
                        <div class="alert alert-<?= htmlspecialchars($flash['type']) ?> alert-dismissible fade show" role="alert">
                            <?= htmlspecialchars($flash['text']) ?>
                            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
                        </div>
                    <?php endif; ?>

                    <?php if (empty($days_off)): ?>
                        <div class="alert alert-info text-center py-4">
                            Non hai ancora impostato giorni di chiusura.<br>
                            Aggiungine uno per bloccare le prenotazioni in quei giorni.
                        </div>
                    <?php else: ?>
                        <div class="table-responsive">
                            <table id="daysOffTable" class="table table-striped table-hover table-bordered">
                                <thead>
                                <tr>
                                    <th>Data</th>
                                    <th>Titolo / Descrizione</th>
                                    <th>Ricorrente</th>
                                    <th>Azioni</th>
                                </tr>
                                </thead>
                                <tbody>
                                <?php foreach ($days_off as $day): ?>
                                    <tr>
                                        <td><?= htmlspecialchars($day['date']) ?></td>
                                        <td><?= htmlspecialchars(($day['title'] ?: '') . (($day['description'] ?? '') ? ' — ' . $day['description'] : '')) ?: 'Chiusura' ?></td>
                                        <td>
                                            <?php if (!empty($day['is_recurring'])): ?>
                                                <span class="badge bg-success">Sì (ogni anno)</span>
                                            <?php else: ?>
                                                <span class="badge bg-secondary">No</span>
                                            <?php endif; ?>
                                        </td>
                                        <td>
                                            <button type="button" class="btn btn-sm btn-warning me-1"
                                                    data-bs-toggle="modal" data-bs-target="#editDayOffModal"
                                                    onclick='fillEditModal(<?= json_encode([
                                                        "id" => (int)$day["id"],
                                                        "date" => $day["date"],
                                                        "title" => $day["title"] ?? "",
                                                        "description" => $day["description"] ?? ""
                                                    ], JSON_HEX_APOS | JSON_HEX_QUOT) ?>)'>
                                                <i class="bx bx-edit"></i> Modifica
                                            </button>

                                            <form action="" method="POST" style="display:inline;"
                                                  onsubmit="return confirm('Confermi l\'eliminazione?');">
                                                <input type="hidden" name="action" value="delete">
                                                <input type="hidden" name="id" value="<?= (int)$day['id'] ?>">
                                                <button type="submit" class="btn btn-sm btn-danger">
                                                    <i class="bx bx-trash"></i> Elimina
                                                </button>
                                            </form>
                                        </td>
                                    </tr>
                                <?php endforeach; ?>
                                </tbody>
                            </table>
                        </div>
                    <?php endif; ?>
                </div>
            </div>
        </div>
    </div>

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

<!-- Modal Aggiungi -->
<div class="modal fade" id="addDayOffModal" tabindex="-1" aria-labelledby="addDayOffModalLabel">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header bg-primary text-white">
                <h5 class="modal-title" id="addDayOffModalLabel">Aggiungi Giorni di Chiusura</h5>
                <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
            </div>
            <form action="" method="POST">
                <div class="modal-body">
                    <input type="hidden" name="action" value="add">

                    <div class="row">
                        <div class="col-md-6 mb-3">
                            <label class="form-label fw-bold">Dal <span class="text-danger">*</span></label>
                            <input type="date" class="form-control" name="start_date" required>
                        </div>
                        <div class="col-md-6 mb-3">
                            <label class="form-label fw-bold">Al <span class="text-danger">*</span></label>
                            <input type="date" class="form-control" name="end_date" required>
                        </div>
                    </div>

                    <div class="mb-3">
                        <label class="form-label fw-bold">Titolo (es. Ferie estive)</label>
                        <input type="text" class="form-control" name="title" placeholder="Titolo breve">
                    </div>

                    <div class="mb-3">
                        <label class="form-label fw-bold">Descrizione / Note</label>
                        <textarea class="form-control" name="description" rows="3"
                                  placeholder="Dettagli (es. chiuso tutto il giorno per ferie)"></textarea>
                    </div>

                    <div class="alert alert-secondary mb-0">
                        Verrà salvata una riga per ogni giorno del range (così blocchi facilmente le prenotazioni).
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annulla</button>
                    <button type="submit" class="btn btn-primary">Aggiungi</button>
                </div>
            </form>
        </div>
    </div>
</div>

<!-- Modal Modifica (singolo giorno) -->
<div class="modal fade" id="editDayOffModal" tabindex="-1" aria-labelledby="editDayOffModalLabel">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header bg-warning text-dark">
                <h5 class="modal-title" id="editDayOffModalLabel">Modifica Giorno di Chiusura</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <form action="" method="POST">
                <div class="modal-body">
                    <input type="hidden" name="action" value="edit">
                    <input type="hidden" name="id" id="edit_id">

                    <div class="mb-3">
                        <label class="form-label fw-bold">Data <span class="text-danger">*</span></label>
                        <input type="date" class="form-control" name="start_date" id="edit_date" required>
                    </div>

                    <div class="mb-3">
                        <label class="form-label fw-bold">Titolo</label>
                        <input type="text" class="form-control" name="title" id="edit_title" placeholder="Es: Chiusura straordinaria">
                    </div>

                    <div class="mb-3">
                        <label class="form-label fw-bold">Descrizione / Motivo</label>
                        <input type="text" class="form-control" name="description" id="edit_description"
                               placeholder="Es: Ferie natalizie">
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annulla</button>
                    <button type="submit" class="btn btn-warning">Salva Modifiche</button>
                </div>
            </form>
        </div>
    </div>
</div>

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

<script>
    $(document).ready(function () {
        $('#daysOffTable').DataTable({
            language: { url: '//cdn.datatables.net/plug-ins/1.13.6/i18n/it-IT.json' },
            order: [[0, 'asc']]
        });
    });

    function fillEditModal(data) {
        document.getElementById('edit_id').value = data.id;
        document.getElementById('edit_date').value = data.date;
        document.getElementById('edit_title').value = data.title || '';
        document.getElementById('edit_description').value = data.description || '';
    }
</script>
</body>
</html>