upstream backend_upstream {
    server support-backend:8000;
}

server {
    listen 80 default_server;
    server_name _;
    
    root /usr/share/nginx/html;
    index index.html;

    # Logging
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    # SPA routes
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-store, no-cache, must-revalidate";
    }

    # 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;

        # Для отладки
        add_header X-Debug-Message "Proxying to backend" always;
    }
}