package host

import (
	"errors"
	"os"
	"path/filepath"
	"testing"

	"github.com/carlosframework/platform/internal/registry"
)

func TestInstanceRegistryHostAppReusesClaimRegistry(t *testing.T) {
	reg, err := registry.Open(filepath.Join(t.TempDir(), "registry.db"))
	if err != nil {
		t.Fatal(err)
	}
	defer reg.Close()
	if err := reg.Upsert(registry.Route{Host: "blog.example.com", Kind: "instance", Account: "k7xq", App: "blog"}); err != nil {
		t.Fatal(err)
	}
	lookup := instanceRegistryHostApp(reg)
	for i := 0; i < 2; i++ {
		acct, app, err := lookup("blog.example.com")
		if err != nil || acct != "k7xq" || app != "blog" {
			t.Fatalf("lookup = %q %q %v", acct, app, err)
		}
	}
	if _, _, err := lookup("unknown.example.com"); !errors.Is(err, os.ErrNotExist) {
		t.Fatalf("unknown host = %v", err)
	}
	if _, err := reg.List(); err != nil {
		t.Fatalf("lookup closed shared registry: %v", err)
	}
}