/*
Copyright 2020 The Flux authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package controller

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

	corev1 "k8s.io/api/core/v1"
	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
	"k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	"k8s.io/client-go/rest"
	ctrl "sigs.k8s.io/controller-runtime"

	"github.com/fluxcd/pkg/runtime/testenv"
	"github.com/fluxcd/pkg/testserver"
	sourcev1 "github.com/fluxcd/source-controller/api/v1beta2"

	v2 "github.com/fluxcd/helm-controller/api/v2beta2"
	// +kubebuilder:scaffold:imports
)

var (
	testEnv    *testenv.Environment
	testServer *testserver.HTTPServer

	testCtx = ctrl.SetupSignalHandler()
)

func NewTestScheme() *runtime.Scheme {
	s := runtime.NewScheme()
	utilruntime.Must(corev1.AddToScheme(s))
	utilruntime.Must(apiextensionsv1.AddToScheme(s))
	utilruntime.Must(sourcev1.AddToScheme(s))
	utilruntime.Must(v2.AddToScheme(s))
	return s
}

func TestMain(m *testing.M) {
	testEnv = testenv.New(
		testenv.WithCRDPath(
			filepath.Join("..", "..", "build", "config", "crd", "bases"),
			filepath.Join("..", "..", "config", "crd", "bases"),
		),
		testenv.WithScheme(NewTestScheme()),
	)

	var err error
	if testServer, err = testserver.NewTempHTTPServer(); err != nil {
		panic(fmt.Sprintf("Failed to create a temporary storage server: %v", err))
	}
	fmt.Println("Starting the test storage server")
	testServer.Start()

	go func() {
		fmt.Println("Starting the test environment")
		if err := testEnv.Start(testCtx); err != nil {
			panic(fmt.Sprintf("Failed to start the test environment manager: %v", err))
		}
	}()
	<-testEnv.Manager.Elected()

	code := m.Run()

	fmt.Println("Stopping the test environment")
	if err := testEnv.Stop(); err != nil {
		panic(fmt.Sprintf("Failed to stop the test environment: %v", err))
	}

	fmt.Println("Stopping the test storage server")
	testServer.Stop()
	if err := os.RemoveAll(testServer.Root()); err != nil {
		panic(fmt.Sprintf("Failed to remove storage server dir: %v", err))
	}

	os.Exit(code)
}

// GetTestClusterConfig returns a copy of the test cluster config.
func GetTestClusterConfig() (*rest.Config, error) {
	return rest.CopyConfig(testEnv.GetConfig()), nil
}