/*
Copyright 2016 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 e2e

import (
	"encoding/json"
	"fmt"
	"net/http"
	"time"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/util/wait"
	"k8s.io/kubernetes/pkg/api"
	extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
	"k8s.io/kubernetes/test/e2e/framework"

	. "github.com/onsi/ginkgo"
)

var data = `{
  "kind": "Foo",
  "apiVersion": "company.com/v1",
  "metadata": {
    "name": "bazz"
  },
  "someField": "hello world",
  "otherField": 1
}`

type Foo struct {
	metav1.TypeMeta   `json:",inline"`
	metav1.ObjectMeta `json:"metadata,omitempty" description:"standard object metadata"`

	SomeField  string `json:"someField"`
	OtherField int    `json:"otherField"`
}

type FooList struct {
	metav1.TypeMeta `json:",inline"`
	metav1.ListMeta `json:"metadata,omitempty" description:"standard list metadata; see https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata"`

	Items []Foo `json:"items"`
}

// This test is marked flaky pending namespace controller observing dynamic creation of new third party types.
var _ = Describe("ThirdParty resources [Flaky] [Disruptive]", func() {

	f := framework.NewDefaultFramework("thirdparty")

	rsrc := &extensions.ThirdPartyResource{
		ObjectMeta: metav1.ObjectMeta{
			Name: "foo.company.com",
		},
		Versions: []extensions.APIVersion{
			{Name: "v1"},
		},
	}

	Context("Simple Third Party", func() {
		It("creating/deleting thirdparty objects works [Conformance]", func() {
			defer func() {
				if err := f.ClientSet.Extensions().ThirdPartyResources().Delete(rsrc.Name, nil); err != nil {
					framework.Failf("failed to delete third party resource: %v", err)
				}
			}()
			if _, err := f.ClientSet.Extensions().ThirdPartyResources().Create(rsrc); err != nil {
				framework.Failf("failed to create third party resource: %v", err)
			}

			wait.Poll(time.Second*30, time.Minute*5, func() (bool, error) {
				data, err := f.ClientSet.Extensions().RESTClient().Get().AbsPath("/apis/company.com/v1/foos").DoRaw()
				if err != nil {
					return false, err
				}
				meta := metav1.TypeMeta{}
				if err := json.Unmarshal(data, &meta); err != nil {
					return false, err
				}
				if meta.Kind == "FooList" {
					return true, nil
				}
				status := metav1.Status{}
				if err := runtime.DecodeInto(api.Codecs.LegacyCodec(api.Registry.EnabledVersions()...), data, &status); err != nil {
					return false, err
				}
				if status.Code != http.StatusNotFound {
					return false, fmt.Errorf("Unexpected status: %v", status)
				}
				return false, nil
			})

			data, err := f.ClientSet.Extensions().RESTClient().Get().AbsPath("/apis/company.com/v1/foos").DoRaw()
			if err != nil {
				framework.Failf("failed to list with no objects: %v", err)
			}
			list := FooList{}
			if err := json.Unmarshal(data, &list); err != nil {
				framework.Failf("failed to decode: %#v", err)
			}
			if len(list.Items) != 0 {
				framework.Failf("unexpected object before create: %v", list)
			}
			foo := &Foo{
				TypeMeta: metav1.TypeMeta{
					Kind: "Foo",
				},
				ObjectMeta: metav1.ObjectMeta{
					Name: "foo",
				},
				SomeField:  "bar",
				OtherField: 10,
			}
			bodyData, err := json.Marshal(foo)
			if err != nil {
				framework.Failf("failed to marshal: %v", err)
			}
			if _, err := f.ClientSet.Extensions().RESTClient().Post().AbsPath("/apis/company.com/v1/namespaces/default/foos").Body(bodyData).DoRaw(); err != nil {
				framework.Failf("failed to create: %v", err)
			}

			data, err = f.ClientSet.Extensions().RESTClient().Get().AbsPath("/apis/company.com/v1/namespaces/default/foos/foo").DoRaw()
			if err != nil {
				framework.Failf("failed to get object: %v", err)
			}
			out := Foo{}
			if err := json.Unmarshal(data, &out); err != nil {
				framework.Failf("failed to decode: %#v", err)
			}
			if out.Name != foo.Name || out.SomeField != foo.SomeField || out.OtherField != foo.OtherField {
				framework.Failf("expected:\n%#v\nsaw:\n%#v\n%s\n", foo, &out, string(data))
			}

			data, err = f.ClientSet.Extensions().RESTClient().Get().AbsPath("/apis/company.com/v1/foos").DoRaw()
			if err != nil {
				framework.Failf("failed to list with no objects: %v", err)
			}
			if err := json.Unmarshal(data, &list); err != nil {
				framework.Failf("failed to decode: %#v", err)
			}
			if len(list.Items) != 1 {
				framework.Failf("unexpected object too few or too many: %v", list)
			}
			if list.Items[0].Name != foo.Name || list.Items[0].SomeField != foo.SomeField || list.Items[0].OtherField != foo.OtherField {
				framework.Failf("expected: %#v, saw in list: %#v", foo, list.Items[0])
			}

			// Need to manually do the serialization because otherwise the
			// Content-Type header is set to protobuf, the thirdparty codec in
			// the API server side only accepts JSON.
			deleteOptionsData, err := json.Marshal(metav1.NewDeleteOptions(10))
			framework.ExpectNoError(err)
			if _, err := f.ClientSet.Core().RESTClient().Delete().
				AbsPath("/apis/company.com/v1/namespaces/default/foos/foo").
				Body(deleteOptionsData).
				DoRaw(); err != nil {
				framework.Failf("failed to delete: %v", err)
			}

			data, err = f.ClientSet.Extensions().RESTClient().Get().AbsPath("/apis/company.com/v1/foos").DoRaw()
			if err != nil {
				framework.Failf("failed to list with no objects: %v", err)
			}
			if err := json.Unmarshal(data, &list); err != nil {
				framework.Failf("failed to decode: %#v", err)
			}
			if len(list.Items) != 0 {
				framework.Failf("unexpected object after delete: %v", list)
			}
		})
	})
})