worker_processes 1;
events { worker_connections 1024; }
http {
  include       mime.types;
  default_type  application/octet-stream;
  sendfile        on;
  keepalive_timeout  65;

  server {
    listen 80;
    server_name _;

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

    # Proxy API requests to backend service
    # Frontend calls /api/recipes, nginx removes /api prefix and forwards to backend:8000/recipes
    location /api/ {
      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_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;
    }

    # Serve static files and fallback to index.html for SPA
    location / {
      try_files $uri $uri/ /index.html;
    }

    # Optional caching for static assets
    location ~* \.(?:css|js|svg|png|jpg|jpeg|gif|ico)$ {
      try_files $uri =404;
      expires 7d;
      add_header Cache-Control "public";
    }
  }
}