/*
Copyright 2023 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 lifted

import (
	"fmt"
	"testing"

	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
)

func TestObjectVersion(t *testing.T) {
	t.Run("have generation", func(t *testing.T) {
		obj := &unstructured.Unstructured{
			Object: map[string]interface{}{
				"metadata": map[string]interface{}{
					"generation": int64(1),
				},
			},
		}
		res := ObjectVersion(obj)
		expect := fmt.Sprintf("%s%d", generationPrefix, 1)
		if res != expect {
			t.Errorf("expect %v, but got %v", expect, res)
		}
	})

	t.Run("don't have generation", func(t *testing.T) {
		obj := &unstructured.Unstructured{
			Object: map[string]interface{}{
				"metadata": map[string]interface{}{
					"resourceVersion": "version",
				},
			},
		}
		res := ObjectVersion(obj)
		expect := fmt.Sprintf("%s%s", resourceVersionPrefix, "version")
		if res != expect {
			t.Errorf("expect %v, but got %v", expect, res)
		}
	})
}

func TestObjectMetaObjEquivalent(t *testing.T) {
	tests := []struct {
		name   string
		a      *unstructured.Unstructured
		b      *unstructured.Unstructured
		expect bool
	}{
		{
			name: "name not equal",
			a: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"name": "a",
					},
				},
			},
			b: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"name": "b",
					},
				},
			},
			expect: false,
		},
		{
			name: "namespace not equal",
			a: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"namespace": "a",
					},
				},
			},
			b: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"namespace": "b",
					},
				},
			},
			expect: false,
		},
		{
			name: "label not equal",
			a: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"labels": map[string]interface{}{"a": "b"},
					},
				},
			},
			b: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"labels": map[string]interface{}{"c": "d"},
					},
				},
			},
			expect: false,
		},
		{
			name: "everything is the same",
			a: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"name":      "a",
						"namespace": "a",
						"labels":    "a",
					},
				},
			},
			b: &unstructured.Unstructured{
				Object: map[string]interface{}{
					"metadata": map[string]interface{}{
						"name":      "a",
						"namespace": "a",
						"labels":    "a",
					},
				},
			},
			expect: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			actual := objectMetaObjEquivalent(tt.a, tt.b)
			if actual != tt.expect {
				t.Errorf("expect %v but got %v", tt.expect, actual)
			}
		})
	}
}

func TestObjectNeedsUpdate(t *testing.T) {
	clusterObj := &unstructured.Unstructured{
		Object: map[string]interface{}{
			"metadata": map[string]interface{}{
				"generation": int64(1),
			},
		},
	}
	desiredObj := clusterObj
	recordedVersion := fmt.Sprintf("%s%d", generationPrefix, 2)
	actual := ObjectNeedsUpdate(desiredObj, clusterObj, recordedVersion)
	if actual != true {
		t.Errorf("expect %v, but got %v", true, actual)
	}
}