server {
    listen 80;
    root /var/www/html;
    index index.html;

    # Health check endpoint for nginx itself
    location = /health {
        access_log off;
        return 200 "nginx ok\n";
        add_header Content-Type text/plain;
    }

    # Banner entry points — cross-origin script loads from customer
    # sites, so they need permissive CORS.
    location = /consent-loader.js {
        add_header Access-Control-Allow-Origin "*" always;
        add_header Access-Control-Allow-Methods "GET, OPTIONS" always;
        add_header Cache-Control "public, max-age=3600" always;
        try_files $uri =404;
    }

    location = /consent-bundle.js {
        add_header Access-Control-Allow-Origin "*" always;
        add_header Access-Control-Allow-Methods "GET, OPTIONS" always;
        add_header Cache-Control "public, max-age=3600" always;
        try_files $uri =404;
    }

    # Proxy API requests to FastAPI backend
    location /api/ {
        proxy_pass http://127.0.0.1:8000;
        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 /docs, /openapi.json to FastAPI (Swagger UI)
    location /docs {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
    }

    location /openapi.json {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
    }

    # SPA fallback — serve index.html for all other routes
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Cache static assets
    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}