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package tailroute

import (
	"net/http"
	"net/http/httputil"
	"net/url"
)

func Proxy(target *url.URL, funnel bool) Router {
	proxy := httputil.NewSingleHostReverseProxy(target)
	proxyDirector := proxy.Director
	proxy.Director = func(r *http.Request) {
		proxyDirector(r)
		r.Host = target.Host
		r.Header.Set("X-Forwarded-Host", r.Header.Get("Host"))
	}
	handler := http.HandlerFunc(proxy.ServeHTTP)

	r := Router{
		Tailnet: handler,
	}
	if funnel {
		r.Funnel = handler
	}
	return r
}