# HTTP - Redirect to HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name _;

    # Let's Encrypt challenge
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    # Redirect all other traffic to HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS - Main site
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name monitor.tudominio.com;

    # SSL certificates
    ssl_certificate /etc/nginx/ssl/live/monitor.tudominio.com/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/live/monitor.tudominio.com/privkey.pem;

    # SSL configuration
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;

    # Modern SSL configuration
    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;

    # HSTS
    add_header Strict-Transport-Security "max-age=63072000" always;

    # Max upload size
    client_max_body_size 100M;

    # Proxy to Next.js dashboard
    location / {
        proxy_pass http://dashboard;
        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 86400;
    }

    # API rate limiting
    location /api/ {
        limit_req zone=api burst=20 nodelay;
        limit_conn conn 10;

        proxy_pass http://dashboard;
        proxy_http_version 1.1;
        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;
    }

    # Static files caching
    location /_next/static/ {
        proxy_pass http://dashboard;
        proxy_cache_valid 200 30d;
        add_header Cache-Control "public, max-age=2592000, immutable";
    }

    # Health check
    location /health {
        access_log off;
        return 200 "OK";
        add_header Content-Type text/plain;
    }
}