# Nginx Configuration for QuickBooks POS Help Documentation
# For production deployment with 100,000+ users
#
# Installation:
# 1. sudo apt install nginx
# 2. sudo cp nginx_setup.conf /etc/nginx/sites-available/qbpos-help
# 3. sudo ln -s /etc/nginx/sites-available/qbpos-help /etc/nginx/sites-enabled/
# 4. sudo nginx -t
# 5. sudo systemctl restart nginx

server {
    listen 80;
    listen [::]:80;
    
    server_name your-domain.com;  # Change to your domain or IP
    
    root /home/pts/Documents/QBPOS_Help_Web/QB_Help_Web;
    index POS_Help.html;
    
    # Access and error logs (minimal logging)
    access_log /var/log/nginx/qbpos-access.log combined buffer=32k;
    error_log /var/log/nginx/qbpos-error.log warn;
    
    # Gzip compression for text files
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript 
               application/x-javascript application/xml+rss 
               application/javascript application/json;
    
    # Static asset caching (1 year for images, icons)
    location ~* \.(gif|jpg|jpeg|png|ico|css|js)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;  # Don't log static files
    }
    
    # HTML files cache for 1 hour
    location ~* \.(html|htm)$ {
        expires 1h;
        add_header Cache-Control "public, must-revalidate";
    }
    
    # Main location
    location / {
        try_files $uri $uri/ =404;
    }
    
    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    
    # Connection optimizations for high traffic
    keepalive_timeout 65;
    keepalive_requests 100;
    
    # Rate limiting (optional - uncomment to limit requests)
    # limit_req_zone $binary_remote_addr zone=qbpos_limit:10m rate=10r/s;
    # limit_req zone=qbpos_limit burst=20 nodelay;
}