server {
    listen 80;
    server_name backups.example.com;
    # Basic auth sends the password with every request — never serve this over plain HTTP
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    http2 on;
    server_name backups.example.com;

    # Paths as created by `certbot certonly --nginx -d backups.example.com`
    ssl_certificate     /etc/letsencrypt/live/backups.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/backups.example.com/privkey.pem;

    root /var/www/backup-dashboard/public;
    index index.html;

    # Strict CSP works because there is no inline JS/CSS
    add_header Content-Security-Policy "default-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'none'" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer" always;
    add_header Strict-Transport-Security "max-age=31536000" always;

    # Dashboard users. Create with: htpasswd -B -c /etc/nginx/backup-dashboard.htpasswd <user>
    # To move to Microsoft 365 sign-in later, replace these two lines with an auth_request to
    # oauth2-proxy (provider=entra-id); the app itself doesn't need to change.
    auth_basic "Backup Monitor";
    auth_basic_user_file /etc/nginx/backup-dashboard.htpasswd;

    location / {
        try_files $uri $uri/ /index.html;
    }

    location /api/ {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Collectors authenticate with their own API key (Authorization: Bearer …), checked by the app
    location = /api/v1/ingest {
        auth_basic off;
        client_max_body_size 256k;
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}