server {
    server_name hb3-accelerator.com www.hb3-accelerator.com;

    # Включаем сжатие
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/javascript
        application/json
        application/xml+rss
        application/atom+xml
        image/svg+xml;

    # Кеширование статических файлов
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        proxy_pass http://localhost:9000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        expires 1y;
        add_header Cache-Control "public, immutable";
        add_header Vary Accept-Encoding;
        
        # Для WebSocket/HMR:
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # Запрет на доступ к чувствительным файлам
    location ~* /(sendgrid\.env|env\.js|config\.js|aws-exports\.js|firebase-config\.js|firebase\.js|settings\.js|app-settings\.js|config\.json|credentials\.json|secrets\.json)$ {
        deny all;
        return 403;
    }

    # Основные страницы
    location / {
        proxy_pass http://localhost:9000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Оптимизация для быстрой загрузки
        proxy_buffering on;
        proxy_buffer_size 4k;
        proxy_buffers 8 4k;
        proxy_busy_buffers_size 8k;
        
        # Таймауты
        proxy_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;

        # Для WebSocket/HMR:
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # Для WebSocket соединений
    location /ws {
        proxy_pass http://localhost:8000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # Таймауты для WebSocket
        proxy_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 300s;
    }

    # API endpoints
    location /api/ {
        proxy_pass http://localhost:8000/api/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # Оптимизация для API
        proxy_buffering on;
        proxy_buffer_size 4k;
        proxy_buffers 8 4k;
        proxy_busy_buffers_size 8k;
        
        # Таймауты
        proxy_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
      
        # Для WebSocket:
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # SSL настройки
    listen 443 ssl http2; # Включаем HTTP/2
    ssl_certificate /etc/letsencrypt/live/hb3-accelerator.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/hb3-accelerator.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # Дополнительные оптимизации SSL (только если не конфликтуют)
    ssl_session_cache shared:SSL:10m;
    ssl_stapling on;
    ssl_stapling_verify on;

    # Безопасность
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Frame-Options DENY always;
    add_header X-Content-Type-Options nosniff always;
    add_header X-XSS-Protection "1; mode=block" always;
}

# HTTP to HTTPS redirect
server {
    if ($host = hb3-accelerator.com) {
        return 301 https://$host$request_uri;
    }

    listen 80;
    server_name hb3-accelerator.com www.hb3-accelerator.com;
    return 404;
}