Sindbad~EG File Manager

<?php
/**
 * Notification Class
 * Handles system notifications
 */

class Notification {
    private $db;
    
    public function __construct() {
        $this->db = Database::getInstance()->getConnection();
    }
    
    /**
     * Create a notification
     */
    public function create($userId, $type, $title, $message, $link = null) {
        try {
            $stmt = $this->db->prepare("
                INSERT INTO notifications (user_id, notification_type, title, message, link)
                VALUES (:user_id, :type, :title, :message, :link)
            ");
            
            $stmt->execute([
                'user_id' => $userId,
                'type' => $type,
                'title' => $title,
                'message' => $message,
                'link' => $link
            ]);
            
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
    
    /**
     * Get user notifications
     */
    public function getUserNotifications($userId, $unreadOnly = false, $limit = 50) {
        try {
            $sql = "SELECT * FROM notifications WHERE user_id = :user_id";
            
            if ($unreadOnly) {
                $sql .= " AND is_read = 0";
            }
            
            $sql .= " ORDER BY created_at DESC LIMIT :limit";
            
            $stmt = $this->db->prepare($sql);
            $stmt->bindValue(':user_id', $userId, PDO::PARAM_INT);
            $stmt->bindValue(':limit', $limit, PDO::PARAM_INT);
            $stmt->execute();
            
            return $stmt->fetchAll();
        } catch (PDOException $e) {
            return [];
        }
    }
    
    /**
     * Mark notification as read
     */
    public function markAsRead($notificationId, $userId) {
        try {
            $stmt = $this->db->prepare("
                UPDATE notifications 
                SET is_read = 1 
                WHERE id = :id AND user_id = :user_id
            ");
            
            $stmt->execute([
                'id' => $notificationId,
                'user_id' => $userId
            ]);
            
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
    
    /**
     * Mark all notifications as read
     */
    public function markAllAsRead($userId) {
        try {
            $stmt = $this->db->prepare("
                UPDATE notifications 
                SET is_read = 1 
                WHERE user_id = :user_id AND is_read = 0
            ");
            
            $stmt->execute(['user_id' => $userId]);
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
    
    /**
     * Get unread count
     */
    public function getUnreadCount($userId) {
        try {
            $stmt = $this->db->prepare("
                SELECT COUNT(*) as count 
                FROM notifications 
                WHERE user_id = :user_id AND is_read = 0
            ");
            
            $stmt->execute(['user_id' => $userId]);
            $result = $stmt->fetch();
            
            return $result['count'];
        } catch (PDOException $e) {
            return 0;
        }
    }
    
    /**
     * Delete notification
     */
    public function delete($notificationId, $userId) {
        try {
            $stmt = $this->db->prepare("
                DELETE FROM notifications 
                WHERE id = :id AND user_id = :user_id
            ");
            
            $stmt->execute([
                'id' => $notificationId,
                'user_id' => $userId
            ]);
            
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
}