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

    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml application/json application/javascript application/xml+rss application/atom+xml image/svg+xml;

    # Hash-named assets (Vite emits hashed filenames in /assets/) — long cache
    location ~* ^/assets/.*\.(js|css|woff2?|ttf|otf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # Brand images — versioned via filename, long cache
    location ~* ^/brand/.*\.(png|jpg|jpeg|svg|webp|gif|ico)$ {
        expires 30d;
        add_header Cache-Control "public, max-age=2592000";
        try_files $uri =404;
    }

    # Reverse proxy to FastAPI backend container (legacy obdx-web → obdx-api).
    # Covers: /api/v1/* + the three legacy HTML pages and report subpaths that
    # the old container still serves. Everything else falls through to the SPA.
    location ~ ^/(api/|scan\.html$|demo\.html$|report/) {
        proxy_pass http://obdx-api:8080;
        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;
        proxy_read_timeout 60s;
        proxy_connect_timeout 5s;
    }

    # SPA fallback — every non-asset path returns index.html so client routes work
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache";
    }

    # Healthcheck for Coolify / load balancer
    location = /healthz {
        access_log off;
        return 200 'ok';
        add_header Content-Type text/plain;
    }
}