// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

package k8s_test

import (
	"net/url"
	"testing"
	"time"

	"github.com/cosi-project/runtime/pkg/resource"
	"github.com/cosi-project/runtime/pkg/resource/rtestutils"
	"github.com/siderolabs/go-pointer"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/suite"

	"github.com/siderolabs/talos/internal/app/machined/pkg/controllers/ctest"
	k8sctrl "github.com/siderolabs/talos/internal/app/machined/pkg/controllers/k8s"
	"github.com/siderolabs/talos/pkg/machinery/config/container"
	"github.com/siderolabs/talos/pkg/machinery/config/types/v1alpha1"
	"github.com/siderolabs/talos/pkg/machinery/resources/config"
	"github.com/siderolabs/talos/pkg/machinery/resources/k8s"
	"github.com/siderolabs/talos/pkg/machinery/resources/network"
)

type NodenameSuite struct {
	ctest.DefaultSuite
}

func (suite *NodenameSuite) assertNodename(expected string) {
	rtestutils.AssertResources(suite.Ctx(), suite.T(), suite.State(), []resource.ID{k8s.NodenameID}, func(nodename *k8s.Nodename, asrt *assert.Assertions) {
		asrt.Equal(expected, nodename.TypedSpec().Nodename)
	})
}

func (suite *NodenameSuite) TestDefault() {
	u, err := url.Parse("https://foo:6443")
	suite.Require().NoError(err)

	cfg := config.NewMachineConfig(
		container.NewV1Alpha1(
			&v1alpha1.Config{
				ConfigVersion: "v1alpha1",
				MachineConfig: &v1alpha1.MachineConfig{},
				ClusterConfig: &v1alpha1.ClusterConfig{
					ControlPlane: &v1alpha1.ControlPlaneConfig{
						Endpoint: &v1alpha1.Endpoint{
							URL: u,
						},
					},
				},
			},
		),
	)

	suite.Require().NoError(suite.State().Create(suite.Ctx(), cfg))

	hostnameStatus := network.NewHostnameStatus(network.NamespaceName, network.HostnameID)
	hostnameStatus.TypedSpec().Hostname = "Foo-"
	hostnameStatus.TypedSpec().Domainname = "bar.ltd"

	suite.Require().NoError(suite.State().Create(suite.Ctx(), hostnameStatus))

	suite.assertNodename("foo")
}

func (suite *NodenameSuite) TestFQDN() {
	u, err := url.Parse("https://foo:6443")
	suite.Require().NoError(err)

	cfg := config.NewMachineConfig(
		container.NewV1Alpha1(
			&v1alpha1.Config{
				ConfigVersion: "v1alpha1",
				MachineConfig: &v1alpha1.MachineConfig{
					MachineKubelet: &v1alpha1.KubeletConfig{
						KubeletRegisterWithFQDN: pointer.To(true),
					},
				},
				ClusterConfig: &v1alpha1.ClusterConfig{
					ControlPlane: &v1alpha1.ControlPlaneConfig{
						Endpoint: &v1alpha1.Endpoint{
							URL: u,
						},
					},
				},
			},
		),
	)

	suite.Require().NoError(suite.State().Create(suite.Ctx(), cfg))

	hostnameStatus := network.NewHostnameStatus(network.NamespaceName, network.HostnameID)
	hostnameStatus.TypedSpec().Hostname = "foo"
	hostnameStatus.TypedSpec().Domainname = "bar.ltd"

	suite.Require().NoError(suite.State().Create(suite.Ctx(), hostnameStatus))

	suite.assertNodename("foo.bar.ltd")
}

func TestNodenameSuite(t *testing.T) {
	t.Parallel()

	suite.Run(t, &NodenameSuite{
		DefaultSuite: ctest.DefaultSuite{
			Timeout: 3 * time.Second,
			AfterSetup: func(s *ctest.DefaultSuite) {
				s.Require().NoError(s.Runtime().RegisterController(&k8sctrl.NodenameController{}))
			},
		},
	})
}
