/*
Copyright 2016 The Fission 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 (
	"reflect"
	"testing"

	apiv1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"
)

func Test_checkConflicts(t *testing.T) {
	type args struct {
		objs interface{}
	}
	tests := []struct {
		name    string
		args    args
		wantErr bool
	}{
		{
			name:    "container name",
			args:    args{[]apiv1.Container{{Name: "test1"}, {Name: "test2"}, {Name: "test3"}}},
			wantErr: false,
		},
		{
			name:    "pass non-slice",
			args:    args{apiv1.Container{Name: "test1"}},
			wantErr: true,
		},
		{
			name:    "conflict container name",
			args:    args{[]interface{}{apiv1.Container{Name: "test1"}, apiv1.Container{Name: "test1"}, apiv1.Container{Name: "test3"}}},
			wantErr: true,
		},
		{
			name:    "different types",
			args:    args{[]interface{}{apiv1.VolumeMount{Name: "test1"}, apiv1.EnvFromSource{Prefix: "", ConfigMapRef: nil, SecretRef: nil}}},
			wantErr: true,
		},
		{
			name:    "type without target field",
			args:    args{[]interface{}{apiv1.EnvFromSource{Prefix: "", ConfigMapRef: nil, SecretRef: nil}}},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if err := checkSliceConflicts("Name", tt.args.objs); (err != nil) != tt.wantErr {
				t.Errorf("checkNameConflict() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func Test_mergeContainer(t *testing.T) {
	type args struct {
		dst *apiv1.Container
		src *apiv1.Container
	}
	tests := []struct {
		name    string
		args    args
		want    *apiv1.Container
		wantErr bool
	}{
		{
			name: "nil-src",
			args: args{
				dst: &apiv1.Container{
					Name: "test",
				},
				src: nil,
			},
			want: &apiv1.Container{
				Name: "test",
			},
			wantErr: false,
		},
		{
			name: "normal-merge",
			args: args{
				dst: &apiv1.Container{
					Name:            "test",
					Image:           "foobar",
					Command:         []string{"a"},
					Args:            []string{"b"},
					WorkingDir:      "/tmp",
					Ports:           []apiv1.ContainerPort{{Name: "http1", HostPort: 123}},
					EnvFrom:         []apiv1.EnvFromSource{{Prefix: "asd"}},
					Env:             []apiv1.EnvVar{{Name: "foobar", Value: "dummy"}},
					Resources:       apiv1.ResourceRequirements{Limits: apiv1.ResourceList{apiv1.ResourceCPU: resource.Quantity{Format: "limit"}}},
					VolumeMounts:    []apiv1.VolumeMount{{Name: "volm", ReadOnly: true, MountPath: "/tmp/foobar"}},
					VolumeDevices:   []apiv1.VolumeDevice{{Name: "vold", DevicePath: "hello"}},
					LivenessProbe:   &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 1, TimeoutSeconds: 2, PeriodSeconds: 3, SuccessThreshold: 4, FailureThreshold: 5},
					ReadinessProbe:  &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 1, TimeoutSeconds: 2, PeriodSeconds: 3, SuccessThreshold: 4, FailureThreshold: 5},
					ImagePullPolicy: "IfNotPresent",
				},
				src: &apiv1.Container{
					Name:            "test",
					Image:           "foobar-1",
					Command:         []string{"a", "c"},
					Args:            []string{"b", "d"},
					WorkingDir:      "/tmp/qwer",
					Ports:           []apiv1.ContainerPort{{Name: "http2", HostPort: 123}},
					EnvFrom:         []apiv1.EnvFromSource{{Prefix: "asd"}},
					Env:             []apiv1.EnvVar{{Name: "foobar1", Value: "dummy"}},
					Resources:       apiv1.ResourceRequirements{Limits: apiv1.ResourceList{apiv1.ResourceCPU: resource.Quantity{Format: "unlimit"}, apiv1.ResourceMemory: resource.Quantity{Format: "limit"}}},
					VolumeMounts:    []apiv1.VolumeMount{{Name: "volm1", ReadOnly: true, MountPath: "/tmp/foobar"}},
					VolumeDevices:   []apiv1.VolumeDevice{{Name: "vold1", DevicePath: "hello"}},
					LivenessProbe:   &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 5, TimeoutSeconds: 4, PeriodSeconds: 3, SuccessThreshold: 2, FailureThreshold: 1},
					ReadinessProbe:  &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 5, TimeoutSeconds: 4, PeriodSeconds: 3, SuccessThreshold: 2, FailureThreshold: 1},
					ImagePullPolicy: "Always",
				},
			},
			want: &apiv1.Container{
				Name:                     "test",
				Image:                    "foobar-1",
				Command:                  []string{"a", "a", "c"},
				Args:                     []string{"b", "b", "d"},
				WorkingDir:               "/tmp/qwer",
				Ports:                    []apiv1.ContainerPort{{Name: "http1", HostPort: 123}, {Name: "http2", HostPort: 123}},
				EnvFrom:                  []apiv1.EnvFromSource{{Prefix: "asd"}, {Prefix: "asd"}},
				Env:                      []apiv1.EnvVar{{Name: "foobar", Value: "dummy"}, {Name: "foobar1", Value: "dummy"}},
				Resources:                apiv1.ResourceRequirements{Limits: apiv1.ResourceList{apiv1.ResourceCPU: resource.Quantity{Format: "unlimit"}, apiv1.ResourceMemory: resource.Quantity{Format: "limit"}}},
				VolumeMounts:             []apiv1.VolumeMount{{Name: "volm", ReadOnly: true, MountPath: "/tmp/foobar"}, {Name: "volm1", ReadOnly: true, MountPath: "/tmp/foobar"}},
				VolumeDevices:            []apiv1.VolumeDevice{{Name: "vold", DevicePath: "hello"}, {Name: "vold1", DevicePath: "hello"}},
				LivenessProbe:            &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 5, TimeoutSeconds: 4, PeriodSeconds: 3, SuccessThreshold: 2, FailureThreshold: 1},
				ReadinessProbe:           &apiv1.Probe{ProbeHandler: apiv1.ProbeHandler{}, InitialDelaySeconds: 5, TimeoutSeconds: 4, PeriodSeconds: 3, SuccessThreshold: 2, FailureThreshold: 1},
				Lifecycle:                nil,
				TerminationMessagePath:   "",
				TerminationMessagePolicy: "",
				ImagePullPolicy:          "Always",
				SecurityContext:          nil,
				Stdin:                    false,
				StdinOnce:                false,
				TTY:                      false,
			},
			wantErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := MergeContainer(tt.args.dst, tt.args.src)
			if (err != nil) != tt.wantErr {
				t.Errorf("mergeContainer() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("mergeContainer() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_mergeVolumeLists(t *testing.T) {
	type args struct {
		dst []apiv1.Volume
		src []apiv1.Volume
	}
	tests := []struct {
		name    string
		args    args
		want    []apiv1.Volume
		wantErr bool
	}{
		{
			name: "merge volume list",
			args: args{
				dst: []apiv1.Volume{
					{Name: "vol1", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foo"}}},
					{Name: "vol2", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/bar"}}},
				},
				src: []apiv1.Volume{
					{Name: "vol3", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foobar"}}},
				},
			},
			want: []apiv1.Volume{
				{Name: "vol1", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foo"}}},
				{Name: "vol2", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/bar"}}},
				{Name: "vol3", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foobar"}}},
			},
			wantErr: false,
		},
		{
			name: "conflict volume name",
			args: args{
				dst: []apiv1.Volume{
					{Name: "vol1", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foo"}}},
					{Name: "vol2", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/bar"}}},
				},
				src: []apiv1.Volume{
					{Name: "vol1", VolumeSource: apiv1.VolumeSource{HostPath: &apiv1.HostPathVolumeSource{Path: "/tmp/foobar"}}},
				},
			},
			want:    nil,
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := mergeVolumeLists(tt.args.dst, tt.args.src)
			if (err != nil) != tt.wantErr {
				t.Errorf("mergeVolumeLists() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("mergeVolumeLists() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_mergeContainerList(t *testing.T) {
	type args struct {
		dst []apiv1.Container
		src []apiv1.Container
	}
	tests := []struct {
		name    string
		args    args
		want    []apiv1.Container
		wantErr bool
	}{
		{
			name: "merge container with conflict name",
			args: args{
				dst: []apiv1.Container{
					{Name: "foo", Image: "dummy-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
					{Name: "foo2", Image: "dummy-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				},
				src: []apiv1.Container{
					{Name: "foo", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "test", Value: "foobar"}}},
					{Name: "foo2", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
				},
			},
			want: []apiv1.Container{
				{Name: "foo", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}, {Name: "test", Value: "foobar"}}},
				{Name: "foo2", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}, {Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
			},
			wantErr: false,
		},
		{
			name: "merge container with no conflict name",
			args: args{
				dst: []apiv1.Container{
					{Name: "foo", Image: "dummy-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
					{Name: "foo2", Image: "dummy-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				},
				src: []apiv1.Container{
					{Name: "foo3", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "test", Value: "foobar"}}},
					{Name: "foo4", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
				},
			},
			want: []apiv1.Container{
				{Name: "foo", Image: "dummy-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				{Name: "foo2", Image: "dummy-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				{Name: "foo3", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "test", Value: "foobar"}}},
				{Name: "foo4", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
			},
			wantErr: false,
		},
		{
			name: "merge container with partial conflict name",
			args: args{
				dst: []apiv1.Container{
					{Name: "foo", Image: "dummy-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
					{Name: "foo2", Image: "dummy-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				},
				src: []apiv1.Container{
					{Name: "foo", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "test", Value: "foobar"}}},
					{Name: "foo4", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
				},
			},
			want: []apiv1.Container{
				{Name: "foo", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}, {Name: "test", Value: "foobar"}}},
				{Name: "foo2", Image: "dummy-image-2", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				{Name: "foo4", Image: "my-custom-image-2", Env: []apiv1.EnvVar{{Name: "env3", Value: "foobar"}, {Name: "env4", Value: "barfoo"}}},
			},
			wantErr: false,
		},
		{
			name: "merge container with conflict environment variable",
			args: args{
				dst: []apiv1.Container{
					{Name: "foo", Image: "dummy-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "foobar"}, {Name: "env2", Value: "barfoo"}}},
				},
				src: []apiv1.Container{
					{Name: "foo", Image: "my-custom-image-1", Env: []apiv1.EnvVar{{Name: "env1", Value: "helloworld"}}},
				},
			},
			want:    nil,
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := mergeContainerList(tt.args.dst, tt.args.src)
			if (err != nil) != tt.wantErr {
				t.Errorf("mergeInitContainerList() error = %v, wantErr %v", err, tt.wantErr)
				return
			}

			for _, obj := range got {
				match := false
				for _, w := range tt.want {
					if obj.Name == w.Name && reflect.DeepEqual(obj, w) {
						match = true
						break
					}
				}
				if !match {
					t.Errorf("mergeInitContainerList() got = %v, want %v", got, tt.want)
					break
				}
			}
		})
	}
}