package util

import (
	"errors"
	"fmt"
	"testing"

	corev1 "k8s.io/api/core/v1"
	rbacv1 "k8s.io/api/rbac/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/kubernetes/fake"
	coretesting "k8s.io/client-go/testing"
)

var errorAction = func(coretesting.Action) (handled bool, ret runtime.Object, err error) {
	return true, nil, fmt.Errorf("always error")
}

func TestCreateOrUpdateSecret(t *testing.T) {
	type args struct {
		client kubernetes.Interface
		secret *corev1.Secret
	}
	tests := []struct {
		name    string
		args    args
		wantErr bool
	}{
		{
			name: "create success",
			args: args{
				client: fake.NewSimpleClientset(),
				secret: makeSecret("test"),
			},
			wantErr: false,
		},
		{
			name: "update success",
			args: args{
				client: fake.NewSimpleClientset(makeSecret("test")),
				secret: makeSecret("test"),
			},
			wantErr: false,
		},
		{
			name: "create error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset()
					c.PrependReactor("create", "*", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) {
						return true, nil, errors.New("create secret error")
					})
					return c
				}(),
				secret: makeSecret("test"),
			},
			wantErr: true,
		},
		{
			name: "update error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset(makeSecret("test"))
					c.PrependReactor("update", "*", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) {
						return true, nil, errors.New("update secret error")
					})
					return c
				}(),
				secret: makeSecret("test"),
			},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := CreateOrUpdateSecret(tt.args.client, tt.args.secret); (err != nil) != tt.wantErr {
				t.Errorf("CreateOrUpdateSecret() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func makeSecret(name string) *corev1.Secret {
	return &corev1.Secret{
		ObjectMeta: metav1.ObjectMeta{
			Namespace: metav1.NamespaceDefault,
			Name:      name,
		},
	}
}

func TestCreateOrUpdateClusterRole(t *testing.T) {
	type args struct {
		client      kubernetes.Interface
		clusterRole *rbacv1.ClusterRole
	}
	tests := []struct {
		name    string
		args    args
		wantErr bool
	}{
		{
			name: "not exist and create",
			args: args{
				client:      fake.NewSimpleClientset(),
				clusterRole: makeClusterRole("test"),
			},
			wantErr: false,
		},
		{
			name: "already exist and update",
			args: args{
				client:      fake.NewSimpleClientset(makeClusterRole("test")),
				clusterRole: makeClusterRole("test"),
			},
			wantErr: false,
		},
		{
			name: "create error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset()
					c.PrependReactor("create", "*", errorAction)
					return c
				}(),
				clusterRole: makeClusterRole("test"),
			},
			wantErr: true,
		},
		{
			name: "update error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset(makeClusterRole("test"))
					c.PrependReactor("update", "*", errorAction)
					return c
				}(),
				clusterRole: makeClusterRole("test"),
			},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := CreateOrUpdateClusterRole(tt.args.client, tt.args.clusterRole); (err != nil) != tt.wantErr {
				t.Errorf("CreateOrUpdateClusterRole() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestCreateOrUpdateClusterRoleBinding(t *testing.T) {
	type args struct {
		client             kubernetes.Interface
		clusterRoleBinding *rbacv1.ClusterRoleBinding
	}
	tests := []struct {
		name    string
		args    args
		wantErr bool
	}{
		{
			name: "not exist and create",
			args: args{
				client:             fake.NewSimpleClientset(),
				clusterRoleBinding: makeClusterRoleBinding("test"),
			},
			wantErr: false,
		},
		{
			name: "already exist and update",
			args: args{
				client:             fake.NewSimpleClientset(makeClusterRole("test")),
				clusterRoleBinding: makeClusterRoleBinding("test"),
			},
			wantErr: false,
		},
		{
			name: "create error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset()
					c.PrependReactor("create", "*", errorAction)
					return c
				}(),
				clusterRoleBinding: makeClusterRoleBinding("test"),
			},
			wantErr: true,
		},
		{
			name: "update error",
			args: args{
				client: func() kubernetes.Interface {
					c := fake.NewSimpleClientset(makeClusterRoleBinding("test"))
					c.PrependReactor("update", "*", errorAction)
					return c
				}(),
				clusterRoleBinding: makeClusterRoleBinding("test"),
			},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := CreateOrUpdateClusterRoleBinding(tt.args.client, tt.args.clusterRoleBinding); (err != nil) != tt.wantErr {
				t.Errorf("CreateOrUpdateClusterRoleBinding() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func makeClusterRole(name string) *rbacv1.ClusterRole {
	return &rbacv1.ClusterRole{
		ObjectMeta: metav1.ObjectMeta{
			Name: name,
		},
	}
}

func makeClusterRoleBinding(name string) *rbacv1.ClusterRoleBinding {
	return &rbacv1.ClusterRoleBinding{
		ObjectMeta: metav1.ObjectMeta{
			Name: name,
		},
	}
}