// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0

package commands_test

import (
	"bytes"
	"io/ioutil"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"sigs.k8s.io/kustomize/cmd/config/internal/commands"
	"sigs.k8s.io/kustomize/kyaml/copyutil"
	"sigs.k8s.io/kustomize/kyaml/openapi"
)

func TestCreateSetterCommand(t *testing.T) {
	var tests = []struct {
		name              string
		input             string
		args              []string
		schema            string
		out               string
		inputOpenAPI      string
		expectedOpenAPI   string
		expectedResources string
		err               string
	}{
		{
			name: "add replicas",
			args: []string{"replicas", "3", "--description", "hello world", "--set-by", "me"},
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      description: hello world
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
          setBy: me
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"replicas"}
 `,
		},

		{
			name: "add replicas no match",
			args: []string{"replicas", "3", "--description", "hello world", "--set-by", "me"},
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  foo: 2
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      description: hello world
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
          setBy: me
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  foo: 2
 `,
		},
		{
			name: "error if substitution with same name exists",
			args: []string{"my-image", "3", "--description", "hello world", "--set-by", "me"},
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.substitutions.my-image:
      x-k8s-cli:
        substitution:
          name: my-image
          pattern: something/${my-image-setter}::${my-tag-setter}/nginxotherthing
          values:
          - marker: ${my-image-setter}
            ref: '#/definitions/io.k8s.cli.setters.my-image-setter'
          - marker: ${my-tag-setter}
            ref: '#/definitions/io.k8s.cli.setters.my-tag-setter'
 `,
			err: `substitution with name "my-image" already exists, substitution and setter can't have same name`,
		},

		{
			name: "error if setter with same name exists",
			args: []string{
				"my-image", "ubuntu"},
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.my-image:
      x-k8s-cli:
        setter:
          name: my-image
          value: "nginx"
 `,
			err: `setter with name "my-image" already exists, if you want to modify it, please delete the existing setter and recreate it`,
		},

		{
			name:   "add replicas with schema",
			args:   []string{"replicas", "3", "--description", "hello world", "--set-by", "me"},
			schema: `{"maximum": 10, "type": "integer"}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      maximum: 10
      type: integer
      description: hello world
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
          setBy: me
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"replicas"}
 `,
		},

		{
			name: "add replicas not enough arguments",
			args: []string{"replicas", "--description", "hello world", "--set-by", "me"},
			err:  `setter name and value must be provided, value can either be an argument or can be passed as a flag --value`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter replicas`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
		},

		{
			name:   "list values with schema",
			args:   []string{"list", "--description", "hello world", "--set-by", "me", "--type", "array", "--field", "spec.list"},
			schema: `{"maxItems": 3, "type": "array", "items": {"type": "string"}}`,
			input: `
apiVersion: example.com/v1beta1
kind: Example1
spec:
  list:
  - "a"
  - "b"
  - "c"
---
apiVersion: example.com/v1beta1
kind: Example2
spec:
  list:
  - "a"
  - "b"
  - "c"
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: myspace
spec:
  replicas: 3
  template:
    spec:
      containers:
      - name: sidecar
        image: nginx:1.7.9
      - name: nginx
        image: otherspace/nginx:1.7.9
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "list"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.list:
      items:
        type: string
      maxItems: 3
      type: array
      description: hello world
      x-k8s-cli:
        setter:
          name: list
          value: ""
          listValues:
          - a
          - b
          - c
          setBy: me
 `,
			expectedResources: `
apiVersion: example.com/v1beta1
kind: Example1
spec:
  list: # {"$openapi":"list"}
  - "a"
  - "b"
  - "c"
---
apiVersion: example.com/v1beta1
kind: Example2
spec:
  list: # {"$openapi":"list"}
  - "a"
  - "b"
  - "c"
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: myspace
spec:
  replicas: 3
  template:
    spec:
      containers:
      - name: sidecar
        image: nginx:1.7.9
      - name: nginx
        image: otherspace/nginx:1.7.9
 `,
		},

		{
			name:   "error list path with different values",
			args:   []string{"list", "--description", "hello world", "--set-by", "me", "--type", "array", "--field", "spec.list"},
			schema: `{"maxItems": 3, "type": "array", "items": {"type": "string"}}`,
			input: `
apiVersion: example.com/v1beta1
kind: Example
spec:
  list:
  - "a"
  - "b"
  - "c"
---
apiVersion: example.com/v1beta1
kind: Example
spec:
  list:
  - "c"
  - "d"
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			err: `setters can only be created for fields with same values, encountered different ` +
				`array values for specified field path: [c d], [a b c]`,
		},

		{
			name:   "list values error if field not set",
			args:   []string{"list", "a", "--description", "hello world", "--set-by", "me", "--type", "array"},
			schema: `{"maxItems": 3, "type": "array", "items": {"type": "string"}}`,
			input: `
apiVersion: example.com/v1beta1
kind: Example
spec:
  list:
  - "a"
  - "b"
  - "c"
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter replicas`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.list:
      items:
        type: string
      maxItems: 3
      type: array
      description: hello world
      x-k8s-cli:
        setter:
          name: list
          listValues:
          - a
          - b
          - c
          setBy: me
 `,
			expectedResources: `
apiVersion: example.com/v1beta1
kind: Example
spec:
  list: # {"$openapi":"list"}
  - "a"
  - "b"
  - "c"
 `,
			err: `field flag must be set for array type setters`,
		},
		{
			name: "add replicas with value set by flag",
			args: []string{"replicas", "--value", "3", "--description", "hello world", "--set-by", "me"},
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      description: hello world
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
          setBy: me
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"replicas"}
 `,
		},
		{
			name: "add setter with . in the name",
			args: []string{"foo.bar", "3"},
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "foo.bar"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.foo.bar:
      x-k8s-cli:
        setter:
          name: foo.bar
          value: "3"
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"foo.bar"}
 `,
		},
		{
			name:   "provide different type values in schema and with flag",
			args:   []string{"replicas", "3", "--description", "hello world", "--type", "string"},
			schema: `{"type": "integer"}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			err: `type provided in type flag (string) and in schema (integer) doesn't match`,
		},
		{
			name:   "invalid json in schema",
			args:   []string{"replicas", "3"},
			schema: `{"foo": bar`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			err: "unable to parse schema: invalid character 'b' looking for beginning of value",
		},
		{
			name:   "unknown fields in schema are dropped",
			args:   []string{"replicas", "3"},
			schema: `{"foo": "bar"}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"replicas"}
 `,
		},
		{
			name:   "unknown types are not accepted",
			args:   []string{"replicas", "3"},
			schema: `{"type": "int"}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			err: `invalid schema: type "int" is not supported. Must be one of: object, array, string, integer, number, boolean, file, null`,
		},
		{
			name:   "unknown types are not accepted in nested structures",
			args:   []string{"replicas", "3", "--field", "replicas"},
			schema: `{"maxItems": 3, "type": "array", "items": {"type": "foo"}}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			err: `invalid schema: type "foo" is not supported. Must be one of: object, array, string, integer, number, boolean, file, null`,
		},
		{
			name: "unknown types are not accepted in --type flag",
			args: []string{"replicas", "3", "--type", "bar"},
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			err: `invalid schema: type "bar" is not supported. Must be one of: object, array, string, integer, number, boolean, file, null`,
		},
		{
			name:   "unknown properties in schema are dropped",
			args:   []string{"replicas", "3", "--type", "integer"},
			schema: `{"maximum": 3, "unknown": 42}`,
			input: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
 `,
			inputOpenAPI: `
apiVersion: v1alpha1
kind: Example
`,
			out: `created setter "replicas"`,
			expectedOpenAPI: `
apiVersion: v1alpha1
kind: Example
openAPI:
  definitions:
    io.k8s.cli.setters.replicas:
      maximum: 3
      type: integer
      x-k8s-cli:
        setter:
          name: replicas
          value: "3"
 `,
			expectedResources: `
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3 # {"$openapi":"replicas"}
 `,
		},
	}
	for i := range tests {
		test := tests[i]
		t.Run(test.name, func(t *testing.T) {
			// reset the openAPI afterward
			openapi.ResetOpenAPI()
			defer openapi.ResetOpenAPI()

			baseDir, err := ioutil.TempDir("", "")
			if !assert.NoError(t, err) {
				t.FailNow()
			}
			defer os.RemoveAll(baseDir)

			f := filepath.Join(baseDir, "Krmfile")
			err = ioutil.WriteFile(f, []byte(test.inputOpenAPI), 0600)
			if !assert.NoError(t, err) {
				t.FailNow()
			}

			if test.schema != "" {
				sch, err := ioutil.TempFile("", "schema.json")
				if !assert.NoError(t, err) {
					t.FailNow()
				}
				defer os.Remove(sch.Name())

				err = ioutil.WriteFile(sch.Name(), []byte(test.schema), 0600)
				if !assert.NoError(t, err) {
					t.FailNow()
				}

				test.args = append(test.args, "--schema-path", sch.Name())
			}

			r, err := ioutil.TempFile(baseDir, "k8s-cli-*.yaml")
			if !assert.NoError(t, err) {
				t.FailNow()
			}
			defer os.Remove(r.Name())
			err = ioutil.WriteFile(r.Name(), []byte(test.input), 0600)
			if !assert.NoError(t, err) {
				t.FailNow()
			}

			runner := commands.NewCreateSetterRunner("")
			out := &bytes.Buffer{}
			runner.Command.SetOut(out)
			runner.Command.SetArgs(append([]string{baseDir}, test.args...))
			err = runner.Command.Execute()
			if test.err != "" {
				if !assert.NotNil(t, err) {
					t.FailNow()
				} else {
					assert.Equal(t, err.Error(), test.err)
					return
				}
			}
			if !assert.NoError(t, err) {
				t.FailNow()
			}

			expectedOut := strings.Replace(test.out, "${baseDir}", baseDir, -1)
			expectedNormalized := strings.Replace(expectedOut, "\\", "/", -1)
			// normalize path format for windows
			actualNormalized := strings.Replace(
				strings.Replace(out.String(), "\\", "/", -1),
				"//", "/", -1)

			if !assert.Contains(t, actualNormalized, expectedNormalized) {
				t.FailNow()
			}

			actualResources, err := ioutil.ReadFile(r.Name())
			if !assert.NoError(t, err) {
				t.FailNow()
			}
			if !assert.Equal(t,
				strings.TrimSpace(test.expectedResources),
				strings.TrimSpace(string(actualResources))) {
				t.FailNow()
			}

			actualOpenAPI, err := ioutil.ReadFile(f)
			if !assert.NoError(t, err) {
				t.FailNow()
			}
			if !assert.Equal(t,
				strings.TrimSpace(test.expectedOpenAPI),
				strings.TrimSpace(string(actualOpenAPI))) {
				t.FailNow()
			}
		})
	}
}

func TestCreateSetterSubPackages(t *testing.T) {
	var tests = []struct {
		name        string
		dataset     string
		packagePath string
		args        []string
		expected    string
	}{
		{
			name:    "create-setter-recurse-subpackages",
			dataset: "dataset-without-setters",
			args:    []string{"namespace", "myspace", "-R"},
			expected: `${baseDir}/mysql/
created setter "namespace"

${baseDir}/mysql/storage/
created setter "namespace"
`,
		},
		{
			name:        "create-setter-top-level-pkg-no-recurse-subpackages",
			dataset:     "dataset-without-setters",
			packagePath: "mysql",
			args:        []string{"namespace", "myspace"},
			expected: `${baseDir}/mysql/
created setter "namespace"
`,
		},
		{
			name:        "create-setter-nested-pkg-no-recurse-subpackages",
			dataset:     "dataset-without-setters",
			packagePath: "mysql/storage",
			args:        []string{"namespace", "myspace"},
			expected: `${baseDir}/mysql/storage/
created setter "namespace"
`,
		},
		{
			name:        "create-setter-already-exists",
			dataset:     "dataset-with-setters",
			packagePath: "mysql",
			args:        []string{"namespace", "myspace", "-R"},
			expected: `${baseDir}/mysql/
setter with name "namespace" already exists, if you want to modify it, please delete the existing setter and recreate it

${baseDir}/mysql/nosetters/
created setter "namespace"

${baseDir}/mysql/storage/
setter with name "namespace" already exists, if you want to modify it, please delete the existing setter and recreate it
`,
		},
	}
	for i := range tests {
		test := tests[i]
		t.Run(test.name, func(t *testing.T) {
			// reset the openAPI afterward
			openapi.ResetOpenAPI()
			defer openapi.ResetOpenAPI()
			sourceDir := filepath.Join("test", "testdata", test.dataset)
			baseDir, err := ioutil.TempDir("", "")
			if !assert.NoError(t, err) {
				t.FailNow()
			}
			copyutil.CopyDir(sourceDir, baseDir)
			defer os.RemoveAll(baseDir)
			runner := commands.NewCreateSetterRunner("")
			actual := &bytes.Buffer{}
			runner.Command.SetOut(actual)
			runner.Command.SetArgs(append([]string{filepath.Join(baseDir, test.packagePath)}, test.args...))
			err = runner.Command.Execute()
			if !assert.NoError(t, err) {
				t.FailNow()
			}

			// normalize path format for windows
			actualNormalized := strings.Replace(
				strings.Replace(actual.String(), "\\", "/", -1),
				"//", "/", -1)

			expected := strings.Replace(test.expected, "${baseDir}", baseDir, -1)
			expectedNormalized := strings.Replace(expected, "\\", "/", -1)
			if !assert.Equal(t, expectedNormalized, actualNormalized) {
				t.FailNow()
			}
		})
	}
}
