##############################################################
# SMM Panel – Nginx Production Config
# Place in /etc/nginx/sites-available/smm-panel
##############################################################

server {
    listen 80;
    server_name yourdomain.com www.yourdomain.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name yourdomain.com www.yourdomain.com;

    # SSL
    ssl_certificate     /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/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;
    ssl_prefer_server_ciphers off;

    # Security headers
    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           "strict-origin-when-cross-origin" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header Content-Security-Policy   "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline' fonts.googleapis.com; font-src fonts.gstatic.com; connect-src 'self';" always;

    # React SPA root
    root /var/www/smm-panel/public_html;
    index index.html;

    # Gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
    gzip_min_length 1000;

    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Proxy API requests to Node.js
    location /api/ {
        proxy_pass         http://127.0.0.1:3000;
        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;
        proxy_cache_bypass $http_upgrade;
        proxy_read_timeout 60s;

        # Rate limiting
        limit_req zone=api burst=20 nodelay;
    }

    # Health check endpoint (bypass rate limit)
    location /health {
        proxy_pass http://127.0.0.1:3000/health;
    }

    # SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
    }
}

# Rate limiting zones (add to http block in nginx.conf)
# limit_req_zone $binary_remote_addr zone=api:10m rate=60r/m;