events {
    worker_connections 1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    # Логирование
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;
    error_log /var/log/nginx/error.log warn;

    # Основные настройки
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    # 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/json
        application/javascript
        application/xml+rss
        application/atom+xml
        image/svg+xml;

    # Основной сервер для веб-интерфейса
    server {
        listen 80;
        server_name localhost;
        root /usr/share/nginx/html;
        index index.html;

        # Основная страница и статические файлы
        location / {
            try_files $uri $uri/ /index.html;
            
            # Заголовки для работы с внешним API
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        }
        
        # Кэширование статических файлов
        location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
            add_header Vary Accept-Encoding;
        }

        # Проверка здоровья
        location /health {
            access_log off;
            return 200 "healthy\n";
            add_header Content-Type text/plain;
        }

        # Безопасность - запрещаем доступ к скрытым файлам
        location ~ /\. {
            deny all;
        }

        # Отключаем логирование для служебных файлов
        location = /favicon.ico {
            log_not_found off;
            access_log off;
        }

        location = /robots.txt {
            log_not_found off;
            access_log off;
        }

        # Заголовки безопасности
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Referrer-Policy "no-referrer-when-downgrade" always;
        add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline' 'unsafe-eval'; connect-src 'self' http://localhost:8000 http://127.0.0.1:8000;" always;
    }
}