// Prévisualisation des données
add_action('wp_ajax_preview_ticket_export', function () {
    if (!current_user_can('manage_options')) wp_send_json_error('Accès refusé');

if (!wp_verify_nonce($_GET['_wpnonce'] ?? '', 'export_billets')) {
    wp_die('Erreur de sécurité : Nonce invalide');
}


    $event_id = intval($_GET['event_id'] ?? 0);
    $ticket_id = intval($_GET['ticket_id'] ?? 0);

    if (!$event_id || !$ticket_id) {
        echo '<p>Aucun événement ou billet sélectionné.</p>';
        wp_die();
    }

    if (!class_exists('Tribe__Tickets_Plus__Main')) {
        echo '<p>Le plugin Event Tickets Plus est requis.</p>';
        wp_die();
    }

    $fields = Tribe__Tickets_Plus__Main::instance()->meta()->get_meta_fields_for_event($event_id);
    $attendees = Tribe__Tickets__Tickets::get_event_attendees($event_id);

    $headers = ['Nom du billet', 'Nom participant', 'Email', 'Date de commande'];
    foreach ($fields as $field) {
        $headers[] = $field['label'];
    }

    echo '<table id="datatable_preview" class="display" style="width:100%"><thead><tr>';
    foreach ($headers as $head) {
        echo '<th>' . esc_html($head) . '</th>';
    }
    echo '</tr></thead><tbody>';

    $count = 0;
    foreach ($attendees as $attendee) {
        if ((int)$attendee['ticket_id'] !== $ticket_id) continue;
        if ($count++ >= 10) break;

        echo '<tr>';
        echo '<td>' . esc_html($attendee['ticket'] ?? '') . '</td>';
        echo '<td>' . esc_html($attendee['full_name'] ?? '') . '</td>';
        echo '<td>' . esc_html($attendee['email'] ?? '') . '</td>';
        $date = isset($attendee['purchase_time']) ? date('Y-m-d H:i:s', strtotime($attendee['purchase_time'])) : '';
        echo '<td>' . esc_html($date) . '</td>';

        foreach ($fields as $field) {
            $key = $field['slug'];
            $value = $attendee['meta'][$key] ?? '';
            if (is_array($value)) $value = implode(', ', $value);
            echo '<td>' . esc_html($value) . '</td>';
        }

        echo '</tr>';
    }

    if ($count === 0) {
        echo '<tr><td colspan="' . count($headers) . '"><em>Aucun participant pour ce billet.</em></td></tr>';
    }

    echo '</tbody></table>';
    wp_die();
});

add_action('wp_ajax_export_preview_excel', function () {
    if (!current_user_can('manage_options')) wp_die('Non autorisé');

if (!wp_verify_nonce($_GET['_wpnonce'] ?? '', 'export_billets')) {
    wp_die('Erreur de sécurité : Nonce invalide');
}


    $event_id = intval($_GET['event_id'] ?? 0);
    $ticket_id = intval($_GET['ticket_id'] ?? 0);
    $start_date = sanitize_text_field($_GET['start_date'] ?? '');
    $end_date = sanitize_text_field($_GET['end_date'] ?? '');
    $order_status = sanitize_text_field($_GET['order_status'] ?? '');

    if (!class_exists('Tribe__Tickets_Plus__Main')) {
        wp_die('Event Tickets Plus requis.');
    }

    $fields = Tribe__Tickets_Plus__Main::instance()->meta()->get_meta_fields_for_event($event_id);
    $attendees = Tribe__Tickets__Tickets::get_event_attendees($event_id);

    require_once ABSPATH . 'wp-admin/includes/class-pclzip.php';
    require_once ABSPATH . 'wp-admin/includes/file.php';

    $headers = ['Nom du billet', 'Nom participant', 'Email', 'Date de commande'];
    foreach ($fields as $field) {
        $headers[] = $field['label'];
    }

    // Créer le fichier Excel
    $wb = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
    $sheet = $wb->getActiveSheet();
    $sheet->fromArray($headers, NULL, 'A1');

    $row_num = 2;
    foreach ($attendees as $attendee) {
        if ((int)$attendee['ticket_id'] !== $ticket_id) continue;

        $purchase_time = isset($attendee['purchase_time']) ? strtotime($attendee['purchase_time']) : 0;
        if ($start_date && $purchase_time < strtotime($start_date . ' 00:00:00')) continue;
        if ($end_date && $purchase_time > strtotime($end_date . ' 23:59:59')) continue;

        if ($order_status && isset($attendee['order_id'])) {
            $order = wc_get_order($attendee['order_id']);
            if (!$order || $order->get_status() !== $order_status) continue;
        }

        $row = [
            $attendee['ticket'] ?? '',
            $attendee['full_name'] ?? '',
            $attendee['email'] ?? '',
            date('Y-m-d H:i:s', $purchase_time),
        ];

        foreach ($fields as $field) {
            $key = $field['slug'];
            $value = $attendee['meta'][$key] ?? '';
            if (is_array($value)) $value = implode(', ', $value);
            $row[] = $value;
        }

        $sheet->fromArray($row, NULL, 'A' . $row_num++);
    }

    $writer = new \PhpOffice\PhpSpreadsheet\Writer\Xlsx($wb);
    $tmp_file = tempnam(sys_get_temp_dir(), 'export_preview_') . '.xlsx';
    $writer->save($tmp_file);

    header("Content-Disposition: attachment; filename=export_preview.xlsx");
    header("Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
    readfile($tmp_file);
    unlink($tmp_file);
    exit;
});

// Mode debug - afficher les erreurs dans la page admin si activé
add_action('admin_footer', function () {
    if (!current_user_can('manage_options')) return;
    if (!isset($_GET['page']) || $_GET['page'] !== 'export_billets_page') return;

    echo '<div style="margin-top:40px;"><h2>🛠 Debug Log</h2><pre style="background:#f9f9f9;border:1px solid #ccc;padding:10px;overflow:auto;">';

    $log_file = WP_CONTENT_DIR . '/debug.log';
    if (file_exists($log_file)) {
        $lines = file($log_file);
        $filtered = array_slice($lines, -50); // Dernières 50 lignes
        foreach ($filtered as $line) {
            echo esc_html($line);
        }
    } else {
        echo 'Aucun fichier debug.log trouvé.';
    }

    echo '</pre></div>';
});

// Mode développeur : inspection avancée
add_action('admin_footer', function () {
    if (!current_user_can('manage_options')) return;
    if (!isset($_GET['page']) || $_GET['page'] !== 'export_billets_page') return;

    echo '<div style="margin-top:40px;"><h2>🔬 Developer Dump</h2>';

    $event_id = isset($_POST['event_id']) ? intval($_POST['event_id']) : 0;
    $ticket_id = isset($_POST['ticket_id']) ? intval($_POST['ticket_id']) : 0;

    if ($event_id && $ticket_id) {
        echo '<details open style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>Infos événement (#' . $event_id . ')</summary><pre>';
        print_r(get_post($event_id));
        echo '</pre></details>';

        echo '<details style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>Infos billet (#' . $ticket_id . ')</summary><pre>';
        print_r(get_post($ticket_id));
        echo '</pre></details>';

        if (class_exists('Tribe__Tickets__Tickets')) {
            $attendees = Tribe__Tickets__Tickets::get_event_attendees($event_id);
            echo '<details style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>🧾 Données brutes des participants</summary><pre>';
            print_r(array_slice($attendees, 0, 5)); // On affiche 5 entrées max
            echo '</pre></details>';
        }
    } else {
        echo '<p><em>Remplissez le formulaire pour activer l’inspection technique.</em></p>';
    }

    echo '</div>';
});

// Gérer l’enregistrement des options avancées
add_action('admin_init', function () {
    if (isset($_POST['export_billets_advanced_nonce']) && current_user_can('manage_options')) {
        update_option('export_billets_debug', isset($_POST['enable_debug']) ? '1' : '0');
        update_option('export_billets_devtools', isset($_POST['enable_devtools']) ? '1' : '0');
    }
});

// Rendu dynamique du panneau d’options avancées
add_action('admin_footer', function () {
    if (!current_user_can('manage_options')) return;
    if (!isset($_GET['page']) || $_GET['page'] !== 'export_billets_page') return;

    $debug_enabled = get_option('export_billets_debug', '0') === '1' ? 'checked' : '';
    $devtools_enabled = get_option('export_billets_devtools', '0') === '1' ? 'checked' : '';

    $html = '\n<hr style="margin-top:40px;">\n<h2>⚙️ Options avancées</h2>\n<form method="post" style="margin-top:15px;">\n    <input type="hidden" name="export_billets_advanced_nonce" value="__NONCE__" />\n    <label>\n        <input type="checkbox" name="enable_debug" value="1" %s> Activer le mode debug (affiche debug.log)\n    </label><br>\n    <label>\n        <input type="checkbox" name="enable_devtools" value="1" %s> Activer le mode développeur (dump technique)\n    </label><br><br>\n    <input type="submit" class="button" value="Enregistrer les préférences">\n
<script>
const exportBilletsNonce = '" . wp_create_nonce('export_billets') . "';
</script>

<div id="preview_table" style="margin-top:30px;"></div>
</form>\n';
    $html = str_replace('__NONCE__', wp_create_nonce('export_billets_options'), $html);
    printf($html, $debug_enabled, $devtools_enabled);
});

add_action('admin_footer', function () {
    if (!current_user_can('manage_options')) return;
    if (!isset($_GET['page']) || $_GET['page'] !== 'export_billets_page') return;

    if (get_option('export_billets_debug', '0') === '1') {
        echo '<div style="margin-top:40px;"><h2>🛠 Debug Log</h2><pre style="background:#f9f9f9;border:1px solid #ccc;padding:10px;overflow:auto;">';
        $log_file = WP_CONTENT_DIR . '/debug.log';
        if (file_exists($log_file)) {
            $lines = file($log_file);
            $filtered = array_slice($lines, -50);
            foreach ($filtered as $line) {
                echo esc_html($line);
            }
        } else {
            echo 'Aucun fichier debug.log trouvé.';
        }
        echo '</pre></div>';
    }

    if (get_option('export_billets_devtools', '0') === '1') {
        echo '<div style="margin-top:40px;"><h2>🔬 Developer Dump</h2>';
        $event_id = isset($_POST['event_id']) ? intval($_POST['event_id']) : 0;
        $ticket_id = isset($_POST['ticket_id']) ? intval($_POST['ticket_id']) : 0;

        if ($event_id && $ticket_id) {
            echo '<details open style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>Infos événement (#' . $event_id . ')</summary><pre>';
            print_r(get_post($event_id));
            echo '</pre></details>';

            echo '<details style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>Infos billet (#' . $ticket_id . ')</summary><pre>';
            print_r(get_post($ticket_id));
            echo '</pre></details>';

            if (class_exists('Tribe__Tickets__Tickets')) {
                $attendees = Tribe__Tickets__Tickets::get_event_attendees($event_id);
                echo '<details style="background:#f1f1f1;border:1px solid #ccc;padding:10px;"><summary>🧾 Données brutes des participants</summary><pre>';
                print_r(array_slice($attendees, 0, 5));
                echo '</pre></details>';
            }
        } else {
            echo '<p><em>Remplissez le formulaire pour activer l’inspection technique.</em></p>';
        }

        echo '</div>';
    }
});

// Ajouter une sous-page admin pour les vérifications de dépendances
add_action('admin_menu', function () {
    add_submenu_page(
        'export_billets_page',
        'Vérification des dépendances',
        'Dépendances',
        'manage_options',
        'export_billets_dependencies',
        'render_export_billets_dependencies_page'
    );
});

// Affichage de la page de dépendances
function render_export_billets_dependencies_page() {
    echo '<div class="wrap"><h1>🔗 Vérification des dépendances</h1>';

    $requirements = [
        'PHP >= 7.4' => version_compare(PHP_VERSION, '7.4', '>='),
        'WordPress >= 5.8' => version_compare(get_bloginfo('version'), '5.8', '>='),
        'WooCommerce actif' => class_exists('WooCommerce'),
        'Event Tickets actif' => class_exists('Tribe__Tickets__Tickets'),
        'Event Tickets Plus actif' => class_exists('Tribe__Tickets_Plus__Main'),
        'PhpSpreadsheet disponible' => class_exists('\PhpOffice\PhpSpreadsheet\Spreadsheet'),
    ];

    echo '<table id="datatable_preview" class="display" style="width:100%"><thead><tr><th>Dépendance</th><th>Statut</th></tr></thead><tbody>';
    foreach ($requirements as $label => $ok) {
        echo '<tr>';
        echo '<td>' . esc_html($label) . '</td>';
        echo '<td>' . ($ok ? '<span style="color:green;">✅ OK</span>' : '<span style="color:red;">❌ Manquant</span>') . '</td>';
        echo '</tr>';
    }
    echo '</tbody></table>';
    echo '</div>';
}
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