/*
Copyright 2019 The Kubernetes 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 generic

import (
	"context"

	"k8s.io/apimachinery/pkg/api/meta"
	"k8s.io/client-go/rest"
	runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"

	"sigs.k8s.io/kubefed/pkg/client/generic/scheme"
)

type Client interface {
	Create(ctx context.Context, obj runtimeclient.Object) error
	Get(ctx context.Context, obj runtimeclient.Object, namespace, name string) error
	Update(ctx context.Context, obj runtimeclient.Object) error
	Delete(ctx context.Context, obj runtimeclient.Object, namespace, name string, opts ...runtimeclient.DeleteOption) error
	List(ctx context.Context, obj runtimeclient.ObjectList, namespace string, opts ...runtimeclient.ListOption) error
	UpdateStatus(ctx context.Context, obj runtimeclient.Object) error
	Patch(ctx context.Context, obj runtimeclient.Object, patch runtimeclient.Patch, opts ...runtimeclient.PatchOption) error
}

type genericClient struct {
	client runtimeclient.Client
}

func New(config *rest.Config) (Client, error) {
	client, err := runtimeclient.New(config, runtimeclient.Options{Scheme: scheme.Scheme})
	return &genericClient{client}, err
}

func NewForConfigOrDie(config *rest.Config) Client {
	client, err := New(config)
	if err != nil {
		panic(err)
	}
	return client
}

func NewForConfigOrDieWithUserAgent(config *rest.Config, userAgent string) Client {
	configCopy := rest.CopyConfig(config)
	rest.AddUserAgent(configCopy, userAgent)
	return NewForConfigOrDie(configCopy)
}

func (c *genericClient) Create(ctx context.Context, obj runtimeclient.Object) error {
	return c.client.Create(ctx, obj)
}

func (c *genericClient) Get(ctx context.Context, obj runtimeclient.Object, namespace, name string) error {
	return c.client.Get(ctx, runtimeclient.ObjectKey{Namespace: namespace, Name: name}, obj)
}

func (c *genericClient) Update(ctx context.Context, obj runtimeclient.Object) error {
	return c.client.Update(ctx, obj)
}

func (c *genericClient) Delete(ctx context.Context, obj runtimeclient.Object, namespace, name string, opts ...runtimeclient.DeleteOption) error {
	accessor, err := meta.Accessor(obj)
	if err != nil {
		return err
	}
	accessor.SetNamespace(namespace)
	accessor.SetName(name)
	return c.client.Delete(ctx, obj, opts...)
}

func (c *genericClient) List(ctx context.Context, obj runtimeclient.ObjectList, namespace string, opts ...runtimeclient.ListOption) error {
	opts = append(opts, runtimeclient.InNamespace(namespace))
	return c.client.List(ctx, obj, opts...)
}

func (c *genericClient) UpdateStatus(ctx context.Context, obj runtimeclient.Object) error {
	return c.client.Status().Update(ctx, obj)
}

func (c *genericClient) Patch(ctx context.Context, obj runtimeclient.Object, patch runtimeclient.Patch, opts ...runtimeclient.PatchOption) error {
	return c.client.Patch(ctx, obj, patch, opts...)
}