/*
Copyright 2022 The Karmada 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 native

import (
	"reflect"
	"testing"

	"github.com/stretchr/testify/assert"
	autoscalingv2 "k8s.io/api/autoscaling/v2"
	policyv1 "k8s.io/api/policy/v1"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime"

	"github.com/karmada-io/karmada/pkg/util/helper"
)

func Test_getEntireStatus(t *testing.T) {
	testMap := map[string]interface{}{"key": "value"}
	wantRawExtension, _ := helper.BuildStatusRawExtension(testMap)
	type args struct {
		object *unstructured.Unstructured
	}
	tests := []struct {
		name    string
		args    args
		want    *runtime.RawExtension
		wantErr bool
	}{
		{
			"object doesn't have status",
			args{
				&unstructured.Unstructured{
					Object: map[string]interface{}{},
				},
			},
			nil,
			false,
		},
		{
			"object have wrong format status",
			args{
				&unstructured.Unstructured{
					Object: map[string]interface{}{
						"status": "a string",
					},
				},
			},
			nil,
			true,
		},
		{
			"object have correct format status",
			args{
				&unstructured.Unstructured{
					Object: map[string]interface{}{
						"status": testMap,
					},
				},
			},
			wantRawExtension,
			false,
		},
	}
	for i := range tests {
		tt := tests[i]
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()
			got, err := reflectWholeStatus(tt.args.object)
			if (err != nil) != tt.wantErr {
				t.Errorf("reflectWholeStatus() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("reflectWholeStatus() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_reflectPodDisruptionBudgetStatus(t *testing.T) {
	currStatus := policyv1.PodDisruptionBudgetStatus{
		CurrentHealthy:     1,
		DesiredHealthy:     1,
		DisruptionsAllowed: 1,
		ExpectedPods:       1,
	}
	currStatusUnstructured, _ := helper.ToUnstructured(&policyv1.PodDisruptionBudget{Status: currStatus})
	wantRawExtension, _ := helper.BuildStatusRawExtension(&currStatus)
	type args struct {
		object *unstructured.Unstructured
	}
	tests := []struct {
		name    string
		args    args
		want    *runtime.RawExtension
		wantErr bool
	}{
		{
			"object doesn't have status",
			args{
				&unstructured.Unstructured{
					Object: map[string]interface{}{},
				},
			},
			nil,
			false,
		},
		{
			"object have wrong format status",
			args{
				&unstructured.Unstructured{
					Object: map[string]interface{}{
						"status": "a string",
					},
				},
			},
			nil,
			true,
		},
		{
			"object have correct format status",
			args{
				currStatusUnstructured,
			},
			wantRawExtension,
			false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := reflectPodDisruptionBudgetStatus(tt.args.object)
			if (err != nil) != tt.wantErr {
				t.Errorf("reflectPodDisruptionBudgetStatus() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("reflectPodDisruptionBudgetStatus() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_reflectHorizontalPodAutoscalerStatus(t *testing.T) {
	hpaStatus, _ := helper.ToUnstructured(&autoscalingv2.HorizontalPodAutoscaler{
		Status: autoscalingv2.HorizontalPodAutoscalerStatus{
			CurrentReplicas: 2,
			DesiredReplicas: 2,
		},
	})
	grabStatus, _ := helper.BuildStatusRawExtension(autoscalingv2.HorizontalPodAutoscalerStatus{
		CurrentReplicas: 2,
		DesiredReplicas: 2,
	})
	nilHpaStatus, _ := helper.ToUnstructured(&map[string]interface{}{})
	tests := []struct {
		name    string
		object  *unstructured.Unstructured
		want    *runtime.RawExtension
		wantErr bool
	}{
		{
			name:    "reflect hap status",
			object:  hpaStatus,
			want:    grabStatus,
			wantErr: false,
		},
		{
			name:    "reflect nil hpa status",
			object:  nilHpaStatus,
			want:    nil,
			wantErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := reflectHorizontalPodAutoscalerStatus(tt.object)
			if (err != nil) != tt.wantErr {
				t.Errorf("Test_reflectHorizontalPodAutoscalerStatus() err = %v, wantErr %v", err, tt.wantErr)
			}
			assert.Equalf(t, tt.want, got, "reflectHorizontalPodAutoscalerStatus(%v)", tt.object)
		})
	}
}