server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # Same-origin as far as the browser is concerned — api/client.ts calls relative paths, so
    # this proxies them to the backend container internally instead of relying on CORS.
    location /api/ {
        proxy_pass http://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;
    }

    location /auth/ {
        proxy_pass http://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;
    }

    location /users/ {
        proxy_pass http://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;
    }

    location /health {
        proxy_pass http://backend:8000;
    }

    location /ws/ {
        proxy_pass http://backend:8000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 3600s;
    }

    # SPA fallback — client-side routes (e.g. /games/<id>) must resolve to index.html.
    location / {
        try_files $uri /index.html;
    }
}