# HTTPS variant of nginx.conf — used by the docker-compose.tls.yml overlay.
# nginx terminates TLS and reverse-proxies /api to the backend over the internal network.
# Mount a certificate at /etc/nginx/certs/{fullchain.pem,privkey.pem}.

# Redirect all plain HTTP to HTTPS.
server {
    listen 80;
    server_name _;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    http2 on;
    server_name _;

    ssl_certificate     /etc/nginx/certs/fullchain.pem;
    ssl_certificate_key /etc/nginx/certs/privkey.pem;
    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_ciphers         HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;

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

    # SPA client-side routing: fall back to index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Proxy API calls to the backend service (session cookie preserved).
    # X-Forwarded-Proto=https lets the app (server.forward-headers-strategy=framework)
    # know the original request was secure → Secure cookies + https redirects.
    location /api/ {
        proxy_pass http://app: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_cookie_path / /;
    }
}