# ==============================================================================
# Krona Control Center - Nginx Server Block Configuration
# Domain: kccdemo.ochenstarik.ru
# Target Host: 178.212.13.102
# ==============================================================================

# HTTP -> HTTPS redirect
server {
    listen 80;
    listen [::]:80;
    server_name kccdemo.ochenstarik.ru;

    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# Production HTTPS server
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name kccdemo.ochenstarik.ru;

    # SSL Certificate configuration
    ssl_certificate /etc/letsencrypt/live/kccdemo.ochenstarik.ru/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/kccdemo.ochenstarik.ru/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # Root pointing to atomic symlink
    root /srv/kccdemo/current;
    index index.html;

    # Security Headers
    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com data:; img-src 'self' data: https:; connect-src 'self' ws: wss:; frame-ancestors 'none';" always;

    # Compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied expired no-cache no-store private auth;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml;

    # Static assets cache control
    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Favicon and robots
    location = /favicon.ico {
        access_log off;
        log_not_found off;
    }

    # SPA routing fallback: send all routes to index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Dedicated access and error logs
    access_log /var/log/nginx/kccdemo_access.log;
    error_log /var/log/nginx/kccdemo_error.log warn;
}