server_tokens off;

server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    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 Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # API requests proxy to backend service
    location /api/ {
        proxy_pass http://video-backend:8000;
        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_read_timeout 120s;
        client_max_body_size 50m;
    }

    # Cache static assets (must be before SPA fallback)
    location /assets/ {
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # SPA fallback — real files served directly, all other paths return index.html
    location / {
        try_files $uri $uri/ /index.html;
    }
}