<?php
/**
 * API Endpoint - Fetch Live Notifications
 * Returns JSON data for AJAX updates
 */

header('Content-Type: application/json');
require_once 'db_config.php';

try {
    // Get current time and 48 hours from now
    $now = date('Y-m-d H:i:s');
    $future = date('Y-m-d H:i:s', strtotime('+48 hours'));

    // Fetch active notifications within the next 48 hours
    $pdo = getDbConnection();

    $sql = "SELECT notificationid, notification, starttime, endtime, ticketnumber, link, isactive
            FROM notifications
            WHERE isactive = 1
            AND (
                (starttime <= :future AND (endtime IS NULL OR endtime >= :now))
                OR (starttime BETWEEN :now2 AND :future2)
            )
            ORDER BY starttime ASC";

    $stmt = $pdo->prepare($sql);
    $stmt->execute([
        ':now' => $now,
        ':now2' => $now,
        ':future' => $future,
        ':future2' => $future
    ]);

    $notifications = $stmt->fetchAll();

    // Categorize notifications
    $currentEvents = [];
    $upcomingEvents = [];

    foreach ($notifications as $notification) {
        $start = strtotime($notification['starttime']);
        $end = $notification['endtime'] ? strtotime($notification['endtime']) : null;
        $nowTimestamp = time();

        if ($start <= $nowTimestamp && ($end === null || $end >= $nowTimestamp)) {
            $currentEvents[] = $notification;
        } else {
            $upcomingEvents[] = $notification;
        }
    }

    // Return JSON response
    echo json_encode([
        'success' => true,
        'timestamp' => date('Y-m-d H:i:s'),
        'current' => $currentEvents,
        'upcoming' => $upcomingEvents
    ], JSON_PRETTY_PRINT);

} catch (PDOException $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'error' => 'Database error: ' . $e->getMessage()
    ]);
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'error' => 'Server error: ' . $e->getMessage()
    ]);
}
?>