/*
Copyright 2021 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 util

import (
	"fmt"
	"testing"

	"k8s.io/apimachinery/pkg/runtime/schema"
)

func TestSkippedResourceConfigGVKParse(t *testing.T) {
	tests := []struct {
		input string
		out   []schema.GroupVersionKind
	}{
		{
			input: "v1/Node,Pod;networking.k8s.io/v1beta1/Ingress,IngressClass",
			out: []schema.GroupVersionKind{
				{
					Group:   "",
					Version: "v1",
					Kind:    "Node",
				},
				{
					Group:   "",
					Version: "v1",
					Kind:    "Pod",
				},
				{
					Group:   "networking.k8s.io",
					Version: "v1beta1",
					Kind:    "Ingress",
				},
				{
					Group:   "networking.k8s.io",
					Version: "v1beta1",
					Kind:    "IngressClass",
				},
			}},
	}
	for _, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for i, o := range test.out {
			ok := r.GroupVersionKindDisabled(o)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, o)
			}
		}
	}
}
func TestResourceConfigGVParse(t *testing.T) {
	tests := []struct {
		input string
		out   []schema.GroupVersion
	}{
		{
			input: "networking.k8s.io/v1;test/v1beta1",
			out: []schema.GroupVersion{
				{
					Group:   "networking.k8s.io",
					Version: "v1",
				},
				{
					Group:   "networking.k8s.io",
					Version: "v1",
				},
				{
					Group:   "test",
					Version: "v1beta1",
				},
				{
					Group:   "test",
					Version: "v1beta1",
				},
			}},
	}
	for _, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for i, o := range test.out {
			ok := r.GroupVersionDisabled(o)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, o)
			}
		}
	}
}

func TestSkippedResourceConfigGroupParse(t *testing.T) {
	tests := []struct {
		input string
		out   []string
	}{
		{
			input: "networking.k8s.io;test",
			out: []string{
				"networking.k8s.io", "test",
			}},
	}
	for _, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for i, o := range test.out {
			ok := r.GroupDisabled(o)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, o)
			}
		}
	}
}

func TestSkippedResourceConfigMixedParse(t *testing.T) {
	tests := []struct {
		input string
		out   SkippedResourceConfig
	}{
		{
			input: "v1/Node,Pod;networking.k8s.io/v1beta1/Ingress,IngressClass;networking.k8s.io;test.com/v1",
			out: SkippedResourceConfig{
				Groups: map[string]struct{}{
					"networking.k8s.io": {},
				},
				GroupVersions: map[schema.GroupVersion]struct{}{
					{
						Group:   "test.com",
						Version: "v1",
					}: {},
				},
				GroupVersionKinds: map[schema.GroupVersionKind]struct{}{
					{
						Group:   "",
						Version: "v1",
						Kind:    "Node",
					}: {},
					{
						Group:   "",
						Version: "v1",
						Kind:    "Pod",
					}: {},
					{
						Group:   "networking.k8s.io",
						Version: "v1beta1",
						Kind:    "Ingress",
					}: {},
					{
						Group:   "networking.k8s.io",
						Version: "v1beta1",
						Kind:    "IngressClass",
					}: {},
				},
			}},
	}
	for i, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for g := range r.Groups {
			ok := r.GroupDisabled(g)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, g)
			}
		}

		for gv := range r.GroupVersions {
			ok := r.GroupVersionDisabled(gv)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, gv)
			}
		}

		for gvk := range r.GroupVersionKinds {
			ok := r.GroupVersionKindDisabled(gvk)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, gvk)
			}
		}
	}
}

func TestDefaultSkippedResourceConfigGroupParse(t *testing.T) {
	tests := []struct {
		input string
		out   []string
	}{
		{
			input: "",
			out: []string{
				"cluster.karmada.io", "policy.karmada.io", "work.karmada.io", "config.karmada.io", "events.k8s.io",
			}},
	}
	for _, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for i, o := range test.out {
			ok := r.GroupDisabled(o)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, o)
			}
		}
		ok := r.GroupDisabled("")
		if ok {
			t.Error("unexpected error: v1")
		}
	}
}

func TestDefaultSkippedResourceConfigGroupVersionKindParse(t *testing.T) {
	tests := []struct {
		input string
		out   []schema.GroupVersionKind
	}{
		{
			input: "",
			out: []schema.GroupVersionKind{
				corev1EventGVK,
			}},
	}
	for _, test := range tests {
		r := NewSkippedResourceConfig()
		if err := r.Parse(test.input); err != nil {
			t.Fatalf("Unexpected error: %v", err)
		}
		for i, o := range test.out {
			ok := r.GroupVersionKindDisabled(o)
			if !ok {
				t.Errorf("%d: unexpected error: %v", i, o)
			}
		}
		ok := r.GroupDisabled("")
		if ok {
			t.Error("unexpected error: v1")
		}
	}
}

func TestParseSingle(t *testing.T) {
	tests := []struct {
		input           string
		expectedGroups  []string
		expectedGroupVs []schema.GroupVersion
		expectedGVKs    []schema.GroupVersionKind
	}{
		{
			input:           "",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs:    []schema.GroupVersionKind{},
		},
		{
			input:           "apps",
			expectedGroups:  []string{"apps"},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs:    []schema.GroupVersionKind{},
		},
		{
			input:           "apps/v1",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{{Group: "apps", Version: "v1"}},
			expectedGVKs:    []schema.GroupVersionKind{},
		},
		{
			input:           "apps/v1beta1",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{{Group: "apps", Version: "v1beta1"}},
			expectedGVKs:    []schema.GroupVersionKind{},
		},
		{
			input:           "apps/v1/Deployment",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs:    []schema.GroupVersionKind{{Group: "apps", Version: "v1", Kind: "Deployment"}},
		},
		{
			input:           "apps/v1beta1/Deployment",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs:    []schema.GroupVersionKind{{Group: "apps", Version: "v1beta1", Kind: "Deployment"}},
		},
		{
			input:           "apps/v1/Deployment,ReplicaSet",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs: []schema.GroupVersionKind{
				{Group: "apps", Version: "v1", Kind: "Deployment"},
				{Group: "apps", Version: "v1", Kind: "ReplicaSet"},
			},
		},
		{
			input:           "v1/Service",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs:    []schema.GroupVersionKind{{Group: "", Version: "v1", Kind: "Service"}},
		},
		{
			input:           "v1/Service,ConfigMap",
			expectedGroups:  []string{},
			expectedGroupVs: []schema.GroupVersion{},
			expectedGVKs: []schema.GroupVersionKind{
				{Group: "", Version: "v1", Kind: "Service"},
				{Group: "", Version: "v1", Kind: "ConfigMap"},
			},
		},
	}

	for i, test := range tests {
		t.Run(fmt.Sprintf("Test case %d", i+1), func(t *testing.T) {
			// Create a new SkippedResourceConfig
			r := NewSkippedResourceConfig()

			// Call parseSingle with the input
			if err := r.parseSingle(test.input); err != nil {
				t.Error(err)
			}

			// Verify that skipping the correct groups, group versions, and GVKs are configured
			for _, group := range test.expectedGroups {
				if ok := r.GroupDisabled(group); !ok {
					t.Errorf("Group %s was not found in the SkippedResourceConfig Groups", group)
				}
			}
			for _, gv := range test.expectedGroupVs {
				if ok := r.GroupVersionDisabled(gv); !ok {
					t.Errorf("GroupVersion %v was not found in the SkippedResourceConfig GroupVersions", gv)
				}
			}
			for _, gvk := range test.expectedGVKs {
				if ok := r.GroupVersionKindDisabled(gvk); !ok {
					t.Errorf("GVK %v was not found in the SkippedResourceConfig GroupVersionKinds", gvk)
				}
			}
		})
	}
}