<?php
session_start();
require_once 'db/config.php';

if (!isset($_SESSION['user']) || $_SESSION['user'] !== 'admin') {
    header('Location: login.php');
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['id']) && is_numeric($_POST['id'])) {
    $id = (int) $_POST['id'];
    $pdo = db();
    $stmt = $pdo->prepare('UPDATE attendees SET deleted_at = NOW() WHERE id = ? AND deleted_at IS NULL');
    $stmt->execute([$id]);

    if ($stmt->rowCount() > 0) {
        $_SESSION['message'] = "Attendee #{$id} has been archived successfully.";
    } else {
        $_SESSION['message'] = "No active attendee found for ID #{$id}.";
    }
} else {
    $_SESSION['message'] = 'Error: Invalid archive request.';
}

header('Location: admin.php');
exit;