server {
    listen 80;
    server_name _;

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

    # Serve static files
    location / {
        # Try to serve the exact file, then directory, otherwise fall back to index.html
        # This ensures accessing / or any SPA route returns /index.html
        try_files $uri $uri/ /index.html;
    }

    # Proxy API requests to backend container
    location /payroll/ {
        proxy_pass http://backend:18080/payroll/;
        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;
    }

    location /payroll/employees/ {
        proxy_pass http://backend:18080/payroll/employees/;
        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;
    }

    # Generic fallback to backend for other API paths
    location /api/ {
        proxy_pass http://backend:18080/;
        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;
    }
}