package whois

import (
	"context"
	"net/http"
	"net/http/httptest"
	"sync/atomic"
	"testing"
)

func TestLoadRDAPBootstrapLayeredConditionalRefresh(t *testing.T) {
	ClearRDAPBootstrapRemoteState()

	var hit int32
	const etag = `"v1"`
	var secondIfNoneMatch atomic.Value

	remoteRaw := `{"version":"1.0","services":[[["condtest"],["https://rdap.condtest.example/"]]]}`
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		n := atomic.AddInt32(&hit, 1)
		if n == 2 {
			secondIfNoneMatch.Store(r.Header.Get("If-None-Match"))
		}
		if r.Header.Get("If-None-Match") == etag {
			w.WriteHeader(http.StatusNotModified)
			return
		}
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("ETag", etag)
		_, _ = w.Write([]byte(remoteRaw))
	}))
	defer srv.Close()

	opt := RDAPBootstrapLoadOptions{
		RefreshRemote: true,
		RemoteURL:     srv.URL,
	}

	boot1, err := LoadRDAPBootstrapLayered(context.Background(), opt)
	if err != nil {
		t.Fatalf("first LoadRDAPBootstrapLayered() error: %v", err)
	}
	if got := boot1.URLsForTLD("condtest"); len(got) != 1 || got[0] != "https://rdap.condtest.example/" {
		t.Fatalf("unexpected first load mapping: %#v", got)
	}

	boot2, err := LoadRDAPBootstrapLayered(context.Background(), opt)
	if err != nil {
		t.Fatalf("second LoadRDAPBootstrapLayered() error: %v", err)
	}
	if got := boot2.URLsForTLD("condtest"); len(got) != 1 || got[0] != "https://rdap.condtest.example/" {
		t.Fatalf("unexpected second load mapping: %#v", got)
	}

	if got := atomic.LoadInt32(&hit); got != 2 {
		t.Fatalf("expected 2 remote calls, got=%d", got)
	}
	v, _ := secondIfNoneMatch.Load().(string)
	if v != etag {
		t.Fatalf("expected conditional If-None-Match=%q, got=%q", etag, v)
	}
}