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

    # SPA fallback: 파일이 없으면 index.html로
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 정적 에셋 캐싱 (해시된 파일명)
    location /_app/immutable/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # API/WS는 백엔드로 프록시 (docker-compose에서 설정)
    location /api/ {
        proxy_pass http://backend:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location /ws {
        proxy_pass http://backend:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
    }

    location /login {
        proxy_pass http://backend:8080;
        proxy_set_header Host $host;
    }

    location /logout {
        proxy_pass http://backend:8080;
        proxy_set_header Host $host;
    }
}