upstream backend_upstream {
    server backend:8000;
}

upstream frontend_upstream {
    server frontend:5173;
}

# Редирект с HTTP на HTTPS
server {
    listen 80;
    server_name itformhelp.ru www.itformhelp.ru;
    
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

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

# Основной HTTPS сервер
server {
    listen 443 ssl http2;
    server_name itformhelp.ru www.itformhelp.ru;

    ssl_certificate /etc/letsencrypt/live/itformhelp.ru/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/itformhelp.ru/privkey.pem;
    
    # Дополнительные настройки SSL
    ssl_trusted_certificate /etc/letsencrypt/live/itformhelp.ru/chain.pem;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;
    
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Frame-Options SAMEORIGIN;
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";

    # Frontend proxy
    location / {
        proxy_pass http://frontend_upstream;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        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;
    }

    # API proxy
    location /api/ {
        proxy_pass http://backend_upstream;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        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;
    }
}

# Редирект с IP на домен
server {
    listen 80;
    server_name 185.139.70.62;
    return 301 https://itformhelp.ru$request_uri;
}