# Nginx reverse proxy config for api.seocheckerpro.com
# Place in: /etc/nginx/conf.d/api.seocheckerpro.com.conf
# Then: sudo nginx -t && sudo systemctl reload nginx
#
# This assumes Cloudflare is in front — real IPs come via CF-Connecting-IP header.
# The Go app reads this header in middleware.ClientIP().

server {
    listen 80;
    listen [::]:80;
    server_name api.seocheckerpro.com;
    # Redirect HTTP to HTTPS (Cloudflare handles the actual HTTPS termination)
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name api.seocheckerpro.com;

    # SSL — use your actual cert paths (Let's Encrypt or cPanel-issued)
    ssl_certificate     /etc/letsencrypt/live/api.seocheckerpro.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/api.seocheckerpro.com/privkey.pem;
    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_ciphers         HIGH:!aNULL:!MD5;

    # Security headers
    add_header X-Frame-Options DENY;
    add_header X-Content-Type-Options nosniff;
    add_header Referrer-Policy strict-origin-when-cross-origin;

    # Proxy all requests to Go
    location / {
        proxy_pass         http://127.0.0.1:8080;
        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_set_header   CF-Connecting-IP  $http_cf_connecting_ip;

        # SSE (Server-Sent Events) — broken link checker uses streaming
        proxy_buffering    off;
        proxy_cache        off;
        proxy_read_timeout 180s;
        proxy_send_timeout 180s;

        # Keep-alive
        proxy_set_header   Connection "";
        chunked_transfer_encoding on;
    }

    # Larger body for future bulk endpoints
    client_max_body_size 1m;

    # Rate limiting at Nginx level (belt-and-braces, Go also rate-limits)
    limit_req_zone $binary_remote_addr zone=api_limit:10m rate=30r/m;
    limit_req      zone=api_limit burst=10 nodelay;
}